FCC ID: O5VRB714A Marine Radar RA40C

RA40C/RA41C/RA42C Marine Radar Instruction Manual 1st Edition Read this manual before using the equipment. K thi l

Index O Off-center (OFF-C) ..........................39,54 Option............................................87 P Parallel cursor (///CSR)..................38,49 PPI Screen......................................62 PPI/NAV Screen .............................64 PPI/PPI Screen ...............................63 PPI/SEMI3D Screen........................63 Pulse table (P TABLE)......................71 R Radar interference ..........................6 Radar screen..................................26,27 Range ............................................ 31 Range rings (RINGS) .......................38,50 Range ring interval.................50 Reverse screen ...............................42,66 S Semi-3D.........................................43,63 Sleep (SLEEP) .................................54 Speed (SPEED, SPD SET) ................73 ST'BY ............................................29 ST'BY NAV screen...........................71 STC ............................................32,57 Stern marker (STERN M).................71 Stretch (ST) ....................................41,58 Switching the screen (SEL WIN) .......42,65 System check ................................66 T Target (TARGET).............................51 Track (TRACK)................................41,58 Tune ............................................40,57 Tune meter ...................................26 V VAR RNG .......................................38,50 VRM ............................................35,47 Unit of VRM (RM UNIT) ..........71 W Way point (WAYP) ...........................28 Bearing of Way point (WP BRG)... 71 XTE ............................................28,44 X Zoom (ZOOM) .................................41,59 Z A Adjustment Distance ............................... 75 Angle.................................... 75 Tuning ................................. 76 Antenna height ..................... 77 Automatic gain...................... 78 Automatic STC...................... 78 ALL PPI Screen .............................. 64 ALL PPI/PPI Screen........................ 65 B Bearing scale ................................. 26 Brightness ..................................... 29 Brightness of Panel ............... 29 Buzzer........................................... 71 C Changing setting (CUSTOM)............ 68 Continual variable range (VAR RNG) 38,50 Course error (XTE) ......................... 28 Cross cursor (+).............................. 26 Display modes (MODE) ................... 38,52 D E F G EBL ............................................ 35,46 Bearing of EBL (EBL BRG) ..... 71 Echo Menu .................................... 56 False echoes .................................. 5 FL VRM, FL EBL ............................ 36,47 FTC ............................................ 33,57 Gain ............................................ 32,56 Guard zone (GZ)............................. 38,53 Guard zone mode (GZ MODE) 73 Guard zone level (GZ LVL)...... 73 H Heading marker ............................. 6 Heading Off (HDG OFF) ......... 38,49 Heading blink (HM FLSH) ...... 71 Heading information (HEAD) .. 28 Hold (HOLD) .................................. 73 Language....................................... 73 L M Mark Line ...................................... 51 Menu bar....................................... 45 Man Over Board (MOB)................... 34 MOB Screen .................................. 65 Monitor operation (DISPLAY)........... 73 N Nav (Navigation) Menu.................... 52 Navigation screen........................... 28 North mark (NORTH M) .................. 6,71

Safety Symbols To prevent the risk of personal injury or damage to the equipment, the following safety symbols are used to indicate safety-related information. Insure that you clearly understand the meanings of the symbols BEFORE using the equipment. Symbols Used in Manual

DANGER This indicates a very dangerous procedure that could result in serious injury or death if not performed properly. WARNING This indicates a hazardous procedure that could result in serious injury or death if not performed properly. CAUTION This indicates a hazardous procedure or danger that could result in light-to-severe injury, or that might damage the equipment, if proper precautions are not taken. Safety Symbols Used on Equipment The following safety symbols are used inside or on the equipment near operation lo-

cations to provide information about safety items and operation precautions. Insure that you clearly understand the meanings of the symbols and take the necessary pre-

cautions BEFORE using the equipment. This indicates high voltages with a risk of serious electric shock if the part is touched. NEVER touch the part with bare hands, etc. The symbol prohibits the operation shown inside the symbol. (The ex-

ample in the left prohibits disassembly.) The symbol indicates that the operation inside the symbol is potentially hazardous. (The example on the left indicates that the plug should be held when disconnecting it from the AC outlet.) This indicates the ground (earth) terminal. If the equipment cannot be grounded via the power cord, connect this terminal to ground. There is a risk of serious electric shock if the equipment is not grounded. RA40C/RA41C/RA42C Marine Radar Instruction Manual 21st Jul. 2000 (1st Edition) Document: E-A40C/41C/42C-2-00 i For Safety WARNING /

DO NOT OPEN THE COVER EXCEPT SERVICE PERSONNEL. YOU MAY GET AN ELECTRIC SHOCK.

SWITCH OFF SHIPS MAIN AND PULL OFF MOTOR FUSE BEFORE MAINTENANCE. ROTATING ANTENNA MAY HIT YOU. KEEP OFF DURING TRANSMISSION. RADIATION LEVEL: 100W/m2 DISTANCE : 0.8m RADIATION LEVEL: 10W/m2 DISTANCE : 8m DO NOT DROP COVER. IT MAY HIT SOMEBODY.

: 100W/m2

: 10W/m2

: 0.8m

: 8m CAUTION /

DO NOT PAINT THE RADOME. PERFORMANCE WILL DOWN.

WARNING and CAUTION for Scanner Unit and Antenna ;

! There is a risk of receiving electric shock if these parts are touched by accident. Only qualified personnel should remove covers on these parts.

" To avoid accidental antenna rotation, turn off ships main and pull off out the motor fuse during repair inspect, or maintenance. When repairing or inspecting the scanner unit wear a safety harness and provide a secure platform so that there is no danger of falling even when the vessel lists or when there is an unexpected incident such as an earth quake.

# Do not approach the antenna while it is transmitting. In addition, at inspection never look into the wave guide during trans-

mission.

$ When remove the scanner cover etc., do not drop it. It may endanger people below.

% Do not paint the RADOME. Antenna performance will be down. ii

WARNING / SEE INSTRUCTION MANUALS BEFORE CONNECTING POWER. SAFETY INFORMATION IS WRITTEN IN. EARTH CONNECTION ESSENTIAL BEFORE CONNECTING POWER. YOU MAY GET AN ELECTRIC SHOCK. DO NOT OPEN THE COVER EXCEPT SERVICE PERSONNEL. HIGH VOLTAGE IS INSIDE. YOU MAY GET AN ELECTRIC SHOCK.

WARNING for Display Unit ;

! See instruction manuals before connecting power. Safety information is written in.

" Earth connection essential before connecting supply. There is a risk of serious electric shock if the equipment is not grounded.

# There is a risk of receiving electric shock if these parts are touched by accident. Only qualified personnel should remove covers on these parts. iii

Installation Radio laws dictate that this radar may only be installed by properly licensed personnel. Licensing You must obtain a license as prescribed by the Radio Law to operate this unit. To Customers

* To use this equipment effectively, the operation and maintenance procedure in this manual must be followed properly. Note that this equipment is only a navigational instrument hav-

ing no warrant for navigation safety. Non-execution of fundamental navigation require-

ments such as the ship location check or lookout is not allowed.

* If some abnormality occurs in this equipment, immediately turn off the equipment POWER switch and the radar main switch in the power distribution board and notify our mainte-

nance section or dealer.

* This instrument uses oscillator and LCD backlight. They are easy to be broken. Do not subject the instrument to excessive force or drop it.

* The mercury (Hg) is used in LCD backlight. When you discard your radar, it is due to laws or regulations of your nations. iv

For safety Contents CHAPTER 1 OVERVIEW .................................................................... 1 1.1 Introduction.................................................................................................1 1.2 Organization of This Manual.......................................................................1 CHAPTER 2 USING RADAR FOR THE FIRST TIME.............................. 2 2.1 What is a radar ? .........................................................................................2 2.2 Characteristics of Radar Wave ....................................................................3 2.3 Terms Specific to Radars.............................................................................6 CHAPTER 3 INSTALLATION ............................................................... 10 3.1 Checking Contents of Your Package ...........................................................10 3.2 Checking Power Supply Voltage..................................................................11 3.2.1 Power Supply Requirement....................................................................12 3.2.2 Fuse Replacement ..................................................................................12 3.3 Determining Place of Installation................................................................12 3.3.1 Scanner unit...........................................................................................12 3.3.2 Display unit ............................................................................................12 3.3.3 Shifting away from obstacles .................................................................13 3.4 Installing Scanner Unit ...............................................................................14 3.5 Installing Antenna Unit...............................................................................15 3.6 Installing Display Unit.................................................................................16 3.7 Connecting Cables.......................................................................................17 3.7.0 Interconnecting cable (RA40C Radome scanner)............................................17 3.7.1 Interconnecting cable (RA41C Radome scanner) ..................................17 3.7.2 Interconnecting cable (RA42C Open scanner).......................................20 3.7.3 Grounding wire.......................................................................................21 3.7.4 Power supply cable.................................................................................22 3.8 Adjustment ..................................................................................................22 3.9 Connecting External Equipment to Display Unit .......................................23 3.10 Countermeasure for Electromagnetic Interference ..................................23 3.11 When Discarding Your Radar....................................................................24 CHAPTER 4 FUNCTIONS AND NAMES ............................................... 25 4.1 Key layout ....................................................................................................25 4.2 Rear panel....................................................................................................26 4.3 Radar screen (Single screen) .......................................................................26 4.4 Radar screen (Dual screen) .........................................................................27 4.5 Radar screen (All PPI screen) ......................................................................27 4.6 Radar screen (All PPI/PPI screen) ...............................................................28 4.7 Navigation screen ........................................................................................28 CHAPTER 5 OPERATION ................................................................... 29 Basic operation of Radar ...................................................................................29 5.1 Powering On and Off....................................................................................29 5.2 Adjusting brilliance of screen and key-backlight........................................29 5.3 Basic Operations .........................................................................................30 5.3.1 Powering On and Off...............................................................................30 5.3.2 Transmitting ...........................................................................................30 5.3.3 Adjusting brilliance of screen and key-backlight...................................31 5.3.4 Changing Distance Range (RANGE UP, RANGE DOWN) .......................31 5.3.5 Automatic adjustment (AUTO) ...............................................................31 5.3.6 Sensitivity adjustment (GAIN) ................................................................ 32 5.3.7 Removing sea clutter (STC)..................................................................... 32 5.3.8 Removing rain and snow clutter (FTC)................................................... 33 5.3.9 Man Over Board (MOB) ..........................................................................34 5.4 Functions of Soft Keys.................................................................................35 5.4.1 Bearing measurement (EBL1).................................................................35 5.4.2 Bearing measurement (EBL2).................................................................35 5.4.3 Distance measurement (VRM1) ..............................................................35 5.4.4 Distance measurement (VRM2) ..............................................................36 5.4.5 Measuring the angle between two points (FL EBL2)..............................36 5.4.6 Measuring the distance between two points (FL VRM2)........................36 5.4.7 Changing the group of Soft Keys(NEXT).................................................37 5.4.8 Erasing heading maker temporarily (HDG OFF)....................................38 5.4.9 Using parallel cursors (///CSR).............................................................38 5.4.10 Establishment of the indication of the RANGE RINGS (RINGS)..........38 5.4.11 ON/OFF of variable range function (VAR RNG) ...................................38 5.4.12 Changing display modes (MODE).........................................................38 5.4.13 Guard Zone (GZ) ...................................................................................38 5.4.14 Off Center (OFF-C)................................................................................39 5.4.15 Setting of the SLEEP function(SLEEP) .................................................40 5.4.16 Tuning adjustment (TUNE)...................................................................40 5.4.17 Echo expansion (ST) .............................................................................41 5.4.18 Displaying locus of target (TRACK) ......................................................41 5.4.19 Enlarging selected areas (ZOOM) .........................................................41 5.4.20 Increasing sensitivity (S/L)...................................................................42 5.4.21 Switching the screen (SEL WIN)...........................................................42 5.4.22 Changing the color of screen (PICTURE)..............................................42 5.4.23 Change to PPI screen (PPI)....................................................................43 5.4.24 Change to SEMI3D/PPI screen (SEMI3D)............................................43 5.4.25 Change to PPI/PPI screen (PPI/PPI).....................................................43 5.4.26 Change to PPI/NAV screen (PPI/NAV) .................................................44 5.4.27 Change to ALL PPI screen (ALL PPI).....................................................44 5.4.28 Change to ALL PPI/PPI screen (ALL PPI2)............................................44 5.5 MENU Operation..........................................................................................45

- List of MENU.................................................................................................45 5.5.1 Mark Menu..............................................................................................46 5.5.1.1 Bearing measurement (EBL1) ............................................................46 5.5.1.2 Determining the distance (VRM1) ......................................................47 5.5.1.3 Bearing measurement (EBL2) ............................................................47 5.5.1.4 Determining the distance (VRM2) ......................................................47 5.5.1.5 Measuring the distance or angle between two points ( FL EBL2, FL VRM2 )

....................................47 5.5.1.6 Measuring the angle between two points (FL EBL2)..........................48 5.5.1.7 Erasing heading maker temporarily (HDG OFF) ...............................49 5.5.1.8 Using parallel cursors (///CSR) ........................................................49 5.5.1.9 Establishment of the indication of the RANGE RINGS (RINGS) .......50 5.5.1.10 Variable range function ( VAR RNG ) ...............................................50 5.5.1.11 Output the position data of Cursor (TARGET).................................51 5.5.1.12 Follow the Distance and Bearing marker on the cursor (+MK LINE) 51 5.5.2 Nav (Navigation) Menu ............................................................................52 5.5.2.1 Changing display mode (MODE).......................................................52 5.5.2.2 Guard Zone (GZ) ................................................................................53 5.5.2.3 Shifting display in specific direction (OFF-C)....................................54 5.5.2.4 Setting of the SLEEP function(SLEEP) ..............................................54 5.5.3 Echo Menu................................................................................................56 5.5.3.1 Sensibility adjustment (GAIN) ...........................................................56 5.5.3.2 Removing sea clutter (STC)................................................................57 5.5.3.3 Removing rain and snow clutter (FTC)..............................................57 5.5.3.4 Adjusting receiver tuning (TUNE) ......................................................57 5.5.3.5 Echo expansion (ST)...........................................................................58 5.5.3.6 Displaying locus of target (TRACK)....................................................58 5.5.3.7 Enlarging selected areas (ZOOM) ......................................................59 5.5.3.8 Increasing sensitivity (S/L) ................................................................60 5.5.4 SETUP Menu ..........................................................................................61 5.5.4.1 Initiating the screen display (WINDOW)............................................61

- Limitation of screen operation.....................................................................62

- Screen modes and Operations.....................................................................62

(a) PPI Screen .........................................................................................62

(b) PPI/SEMI3D Screen..........................................................................63

(c) PPI/PPI Screen ..................................................................................63

(d) PPI/NAV Screen ................................................................................64

(e) ALL PPI Screen ..................................................................................64

(f) ALL PPI/PPI Screen............................................................................65

(g) MOB Screen.......................................................................................65 5.5.4.2 Switching screens on PPI/PPI screen (SEL WIN) ..............................65 5.5.4.3 Changing the color of screen (PICTURE) ...........................................66 5.5.4.4 Fault Diagnosis by Self Check (SYSTEM CHECK).............................66 5.5.4.5 Changing the content of the setting (CUSTOM) ................................68 5.5.4.5.1 Changing the settings of soft keys (KEY ASSIGN).........................69 5.5.4.5.2 Changing the content of settings 1(PRESET1) ..............................71 5.5.4.5.3 Changing the content of settings 2 (PRESET2) .............................73 5.5.4.5.4 Changing the content of settings (ADJUSTMENT) .........................75

(1) Adjusting distance (TIMING ADJ) ...................................................75

(2) Adjusting angle (HEAD ADJ) ...........................................................75

(3) Adjusting tuning circuit (TUNING CAL) ..........................................76

(4) Adjusting antenna height (ANTENNA).............................................77

(5) Setting GAIN circuit (GAIN) .............................................................78

(6) Setting STC circuit (STC).................................................................78 CHAPTER 6 MAINTENANCE AND INSPECTION................................... 79 CHAPTER 7 TROUBLESHOOTING...................................................... 81 7.1 Fault Diagnosis by Self-check.....................................................................81 7.2 Inspecting Each Part ...................................................................................82 CHAPTER 8 PRODUCT SPECIFICATIONS ........................................... 83 8.1 General..........................................................................................................83 8.2 Scanner Unit.................................................................................................85 8.3 Display Unit ..................................................................................................85 8.4 External Interface ........................................................................................ 86 8.5 Standard set................................................................................................. 87 8.6 Options ......................................................................................................... 87 8.7 External dimensions and weight ................................................................. 87 8.8 External connection and function ............................................................... 87 APPENDIX 1. RA40C GENERAL SYSTEM DIAGRAM 2. RA41C GENERAL SYSTEM DIAGRAM 3. RA42C GENERAL SYSTEM DIAGRAM 4. RA40C INTERCONNECTION DIAGRAM 5. RA41C/42C INTERCONNECTION DIAGRAM 6. OUTLINE DRAWING DISPLAY UNIT 7. RA40C OUTLINE DRAWING SCANNER UNIT 8. RA41C OUTLINE DRAWING SCANNER UNIT 9. RA42C OUTLINE DRAWING SCANNER UNIT 10. FLUSH MOUNT PROCEDURE 11. INDEX RA40C TEMPLATE OF SCANNER MOUNTING HOLES (ACTUAL SIZE) RA41C TEMPLATE OF SCANNER MOUNTING HOLES (ACTUAL SIZE)

CHAPTER 1 OVERVIEW 1.1 Introduction The RA40C/41C/42C represents a compact, high-performance color marine radar that delivers a peak power output of 2 kW(RA40C) or 4 kW(RA41C/42C) from the an-

tenna and uses an 10-inch color liquid crystal display. In addition to a microcomputer, it incorporates a video signal processing LSI and a newly developed LSI chip exclusively designed for radars, thus providing versatile func-

tionality and high performance. Features 1. A thin display unit incorporating a liquid crystal display. 2. Easy operation using only a few keys and menu screens. 3. A position of key and its function can be set in position ( Selectable soft func-

tion key). 4. Easy operation by the rotary knob. Gain, STC, FTC, EBLs, VRMs etc. can be controlled by the rotary knob. 5. A short and a long range echo can be seen at a time ( Dual range radar). 6. Semi-3D screen display for easy identification of targets in noise. 7. Capable of continuous distance range changes (Continual variable range). 8. Waterproof construction of display allows installation at any desired location. 1.2 Organization of This Manual This manual provides a wide range of information necessary to operate the RA40C/41C/42C radar ranging from the basic knowledge on radars to the methods of operating, installing, and maintaining the radar. The manual also provides rather detailed technical informa-

tion on how to adjust video display to obtain clear images. You are requested to read this manual thoroughly from beginning to end in order to understand the various functions of the radar so you can take full advantage of its advanced functions. If you are using a radar for the first time, refer to the basic data on radars in CHAPTER 2. This manual consists of the following chapters:

USING RADAR FOR THE FIRST TIME INSTALLATION FUNCTIONS AND NAMES OPERATION INSPECTION AND MAINTENANCE TROUBLESHOOTING PRODUCT SPECIFICATIONS

...................... CHAPTER 2

...................... CHAPTER 3

...................... CHAPTER 4

...................... CHAPTER 5

...................... CHAPTER 6

...................... CHAPTER 7

...................... CHAPTER 8 If you are an experienced user of radars, skip CHAPTER 2 and begin from CHAPTER 3. 1

CHAPTER 2. USING RADAR FOR THE FIRST TIME This chapter describes basic information on radars and explains technical terms used in radar operation for those who is using a radar for the first time. 2.1 What is a radar ?

A marine radar is one of the navigation equipment installed on a ship. It emits a radio wave in very high frequency called a microwave from its antenna and receives the reflected radio wave from objects on the sea (e.g., other ships, buoys, and lands). The received radio wave is converted into an electric signal which is displayed on a display screen to indicate the presence of such objects. Although it is very difficult to find other ships or the destina-

tion coast with human eyes at night or in thick fog, a radar helps you detect objects on the sea helping you avoid danger when sailing. The antenna turns 360 degrees as it radiates waves, allowing you to grasp ambient conditions around your ship at a glance. The radio wave radiated from the antenna is called a pulse wave and the radar performs transmission and reception alternately. Several hundred to several thousand pulse waves generally are transmitted while the antenna rotates one turn. Other ship Buoy Radar wave Radar display Your ship Antenna (Rotating) Fig.2-1 What is a radar?

Antenna There are many types of antennas generally used for a radar. For example, these include a parabolic antenna and a slotted-array antenna. The performance of the antenna determines that of the radar. The dominant factors are the antenna's beam width and side lobe level. The narrower the beam width, the higher the resolution of the angle direction. The lower the side lobe level, the fewer the effect of a false echo. Side lobe A beam in one direction in which the strongest radio wave is radiated from the antenna is called the main lobe and beams in other directions are called

"side lobes". The side lobe level refers to the differ-

ence in level between the largest side lobe and the main lobe. Side lobe level Beam width Main beam Side lobe Antenna Fig.2-2 Antenna pattern 2 Beam width A beam width is defined as the width of the main lobe at an angle where the radi-

ated power is halved as measured from the position from which the strongest radio wave is radiated. 2.2 Characteristics of Radar Wave Radio waves from the radar propagate while bending slightly along the terrestrial sur-

face. This characteristic varies dependent on the density of the atmospheric air. The sight distance D of a radar generally is said to be approximately 6% longer than the optical sight distance and is calculated using the equation below :

D (NM) = 2.22 ( h1 + h2 ) where, h1= antenna height in meters h2= target height in meters Line of sight h1 Earth Fig.2-3 Radar wave Radar Radio Wave h2 Targets difficult to display on screen The intensity of the reflected wave from a target depends on the distance, height, and size of the target, as well as its material and shape. Targets constructed with FRP, wood, or other low-reflectance materials or those that have a small incident angle are difficult to display on a screen. Therefore, FRP and wooden ships, sandy beaches, and sandy or muddy shallows all are difficult to catch and require attention when monitoring on the screen. Especially, coast lines on the radar image appear to be pre-

sent more apart from the ship than they are actually located. Therefore, it is important not to misinterpret the available data. Invisible Visible Apparent coastline Actual(invisible) coastline 3 1 HU Fig.2-4 Targets difficult to display on screen Shadow zones of radar Radar waves are characteristic in that they propagate straight ahead. Therefore, if the ship's smokestack or mast is located near the antenna or there is a tall ship or mountain at the side of the ship, such an object generates a shadow behind it. In this 3 case, some objects produce a complete shadow and some produce a partial shadow. In an extreme case, the shadow of an object may extend to a position far away and can-

not be displayed on the screen at all. Since these shadows can be discovered when in-

stalling an antenna, the problem can be avoided by changing the place of antenna in-

stallation to minimize the shadow. Targets in shadow zones are difficult to display on the screen. False echoes A false echo of an actually nonexistent object may sometimes appear on the screen when sailing. The following explains the cause of each of such phenomena. A. Ghost echoes It sometimes happens that one large object near the ship appears at two different bearings. One is the actual echo and other is a ghost echo generated as the wave is re-

reflected from the ship's own smokestack or mast. The former appears at the correct distance and bearing on the screen and the latter appears behind the smokestack or mast. This type of false echo is also generated by re-reflection of waves from bridges and quay walls other than the ship itself. Target 3 1 HU Direct reflection path Secondary reflection path Real echo Ghost echo Mast etc. Direction of ghost echo Fig.2-5 False echoes of radar (Ghost echoes) B. Multiple echoes If there is a large vertical reflecting plane near the ship as in the case when your ship passes alongside a large ship, the wave is repeatedly reflected back and forth between your ship and the other object. For this reason, two to four images appear on the screen at equal intervals in the same bearing. A false echo that is generated by such multiple reflections is called multiple echoes. In this case, an image appearing at the nearest position is the real echo. Multiple echoes disappear as the ship moves away from the reflecting object or its bearing changes. Therefore, it is not difficult to determine the correct image. 4 3 1 HU Real echo Multiple echoes Fig.2-6 False echoes of radar (Multiple echoes) C. False echoes caused by side lobe The radiant beam emitted from an antenna contains side lobes in directions other than that of the main beam. Since the side lobe level is low, it in no way affects distant targets. However, if there is a strong reflecting target near the ship, it sometimes ap-

pear as a circular-arc false echo on the screen.

CAUTION When located near large targets such as land, the ship's mast, etc. sometimes appears as a false echo of circular-arc shape. Main beam Side lobes 3 1 HU False sidelobe echoes Real echo Antenna Fig.2-7 False echoes of radar (Caused by side lobe) 5 D. Distant false echoes caused by duct phenomenon Depending on meteorological conditions, duct phenomenon sometimes occurs in temperature inverting layers of air. In such a case, the wave propagates erratically reaching a location surprisingly far away from the ship. In this case, a target present at a distant location more than the radar's maximum distance range appears on the screen presenting a false echo that can be misunderstood to be present nearer than the actual position. This phenomenon is attributed to the fact that since echo from the distant target arrives late, it gets out of the pulse repetition frequency and is displayed on the screen as an echo in the next frequency. If the target distance changes as you switch over the distance range, you can determine that it is a false echo. Radar interference If a radar operating in the same frequency exists near your ship, interference noise may appear on the screen that is caused by transmitted waves from that radar. This interference appears in various ways. In most cases, how-

ever, it appears as spiral or radial patterns. The RA40C/41C/42C radar has a function to elimi-

nate interference. Use of this function helps you minimize interference. Radar inrterference 3 1 HU Fig.2-8 Radar interfer-

ence 2.3 Terms Specific to Radar HM(Heading Marker) 0.75 0.25 HU North Mark Fig.2-9 Heading Marker and North Mark HM (Heading Marker) This is a line-shaped marker used to indi-

cate the advancing direction of your ship. North Mark This marker indicates the north direction. It is a short line approximately 1/6 of the screen size. 6 Display modes This refers to a radar's display modes. There are four display modes depending on the direction in which the top of the screen faces with respect to the ship. Ship's Heading Scheduled course North Ship's locus

(not displayed on screen) North Scheduled course 0.75 0.25 NU 0.75 0.25 CU 0.75 0.25 TM 0.75 0.25 HU HM North mark North EBL HU NU CU TM Fig.2-10 Display modes Head Up (HU) In this mode, the ship's heading always indicates the upward direction of the screen. This mode lets you know the relative positions of your ship and other ships or land. North Up (NU) In this mode, the north direction always indicates the upward direction of the screen, allowing you to compare your ship position with a marine chart as you navi-

gate. Course Up (CU) The ship's heading in a course-up mode always indicates the upward direction of the screen as the bearing toward the destination. In this mode, the ship can be ma-

neuvered to sail the shortest distance to the destination by steering it in such a way that its heading marker always directs to the upward direction of the screen. If the ship drifts due to tidal current, care must be taken because the fixed targets move to other positions. True Motion (TM) In this mode, the ship is displayed as if it is moving on a marine chart while the fixed targets such as islands and seashores are fixed in position. When the ship reaches a certain position on the screen (approx. 2/3 of screen size), the ship is placed back to the opposite side on the screen. (The top of the screen faces north.) Note: Navigation equipment such as a gyrocompass or magnet compass must be con-

nected to your radar system before it can be operated in NU, CU, and TM modes.

(Refer to Section 3.9 for details on how to connect your radar to navigation equip-

ment.) 7 VRM (Variable Range Marker) This is a circular-shaped marker whose size can be changed as desired. You can use this marker when you want to examine the distance of an echo from your ship. When measuring the distance of an echo from your ship, be sure to measure at a point close to the center of the echo image on the screen. 0.75 0.25 HU Echo VRM VRM Fig.2-11 VRM EBL (Electronic Bearing Line) This is a marker shaped like a straight line segment that can be changed to any direc-

tion centering around the ship position. Use this marker to examine the advancing direc-

tion of your ship and its relative angle with an echo. When measuring the angle of an echo, position the marker at the center of the echo. 0.75 0.25 HU EBL Equal intervals Echo EBL Fig.2-12 EBL 8 STC (Sensitivity Time Control) Since echo signals received by the radar are strong when they are coming from a short distance, it is difficult to compare signal strength between each reflected signal. To over-

come this difficulty, signal strength is adjusted in such a way that the received signal levels coming from a short distance are lowered and those from a long distance are raised. This function should prove useful when there are large reflected waves from sea surfaces during rough weather. 0.75 0.25 HU STC OFF STC ON 0.75 0.25 HU Echo is suppressed around center Fig.2-13 STC FTC (Fast Time Constant) When it rains or snows, fine noise may appear over the entire screen, making it diffi-

cult to identify echoes. In such a case, echo images on the screen can be made easily distin-

guishable by adjusting FTC. FTC OFF FTC ON 0.75 0.25 HU 0.75 0.25 HU Small noises are reduced. Fig.2-14 FTC 9

CHAPTER 3. INSTALLATION This chapter describes procedures for installing the RA40C/41C/42C radar in your ship and precautions to be observed during installation. Follow the procedure below to in-

stall the radar. Checking contents of your package Checking power supply voltage Determining place of installation Installing scanner unit Installing display unit Connecting cables Adjustment Connecting external equipment When discarding Your radar 3.1 Checking Contents of Your Package First, unpack your package and see if all of the following items are included.

(RF719A)

(RB716A) Item Display unit Scanner unit RA40C RA41C RA42C Q'TY Q'TY 1 (RF719A) 1 (RF719A) Q'TY 1 1 (RB714A) 1 (RB715A) 1 Display cover Fuse Interconnecting cable Power supply cable M10 hexagonal bolt M12 hexagonal bolt Carbon brush 4 1 1 1 2 2 1 (10 m) 1 (10 m) 1 (10 m) 1 (2 m) 1 (2 m) 1 (2 m) 4 sets 4 sets 0 4 sets 0 0 0 0 2 10 The package contains a 10m interconnecting cable as an accessory. Longer cable is also available as an option as listed in Tab.3-1. Tab.3-1 Optional Interconnecting Cable Cable length 15m 20m 25m 30m RA40C Product No. 242J160680B 242J160680C 242J160680D RA41C Product No. 24Y159099B 24Y159099C 24Y159099D RA42C Product No. 24Y159169B 24Y159169C 24Y159169D In addition to the above components included with your package, the following items are also required. Please prepare them separately. Item Tapping screw or M5 bolt and nut Grounding wire Grounding wire and crimp terminal QTY 6 sets 1 1 set Remarks To install display unit Earth line for display unit Earth line for scanner unit 3.2 Checking Power Supply Voltage 3.2.1 Power Supply Requirements For the RA40C/41C/42C radar to be operated normally, the power supply (battery) detailed in Tab.3-2 is required. Note also that if the battery is discharged, its voltage may fluctuate greatly, causing the radar to malfunction. When start up the radar system or start transmitting, an additional rush current is required on the power line. Carefully check the power supply system including wiring by using a circuit tester. Tab.3-2 Power Supply Requirements Maximum current Allowable range of voltage 5A 2.5A 10.2-41.6V 10.2-41.6V

*A.C. power cannot be used Supply voltage used DC12V DC24V 3.2.2 Fuse Replacement For the RA40C/41C/42C radar to be operated safely, proper rating fuses must be used. Tab.3.3 and Tab.3.4 are fuse rating tables for RA40C/41C and RA42C. Check them and replace to the fuse in the package. Supply voltage Tab.3-3 Supply Voltage to Fuse Table for RA40C/41C Motor Fuse Main Fuse used DC12V DC24V 8A/250V or 125V *

(6.3 x 32mm) 8A/250V or 125V

(6.3 x 32mm) T3.15A/250V or 125V *

(5 x 20mm) T3.15A/250V or 125V

(5 x 20mm) Tab.3-4 Supply Voltage to Fuse Table for RA42C 11 Supply voltage used DC12V DC24V Main Fuse Motor Fuse 10A/250V or 125V

(6.3 x 32mm) 8A/250V or 125V *

(6.3 x 32mm) 5A/250V or 125V

(5 x 20mm) T3.15A/250V or 125V *

(5 x 20mm) Note: Marked * fuses are in the set as standard. 3.3 Determining Place of Installation 3.3.1 Scanner unit A radar's target detection capacity varies greatly depending on the fitted position of the scanner. An ideal fitting position is a location high above the ship's keel line where there is no obstacle all around the scanner. In an actual ship, such an ideal location is limited by various factors. Therefore, consider the following suggestions when you determine the place to install the scanner:

(a) Install scanner at a position as high as possible. The higher the installation position, the longer the radio ranging distance. Install the scanner at a position as high as possible after considering the ship's hull structure and radar maintainability.

(b) Install scanner away from smoke-stack and mast If the scanner is installed at the same height as the smoke-stack or mast, radar waves may be blocked, creating shadow zones or generating false echoes. Therefore, do not install the scanner at such a position.

(c) Install scanner forward away from obstacle. To avoid creating shadow zones or generating false echoes, install the scan-

ner at a position nearer to the ship's bow away from obstacles. When installing the scanner on a mast, position it in front of the mast. (If obstacles cannot be avoided for the ship's structural reasons, refer to "Shifting away from obstacles"

described Page 13.)

(d) Do not install the scanner near hot or heat-generating items. Do not install the scanner at a position where it may be subjected to smoke or hot air from smokestacks or heat from lamps.

(e) Install the scanner away from antennas of other equipment. Install the scanner as much away from the antennas of a direction finder, radio transceiver, etc. as possible.

! CAUTION To eliminate the interference, install the scanner away from the antenna of radio transceivers.

(f) Make the cable length as short as possible. Keep the distance from the scanner to the display unit within the standard cable length of 10 m. If you use longer cable for unavoidable reasons, limit the cable length to a maximum of 30 m for RA40C and 100 m for RA41C/42C. 3.3.2 Display unit The display unit can be installed on desktop, wall surface, or ceiling. Determine the place to install the display unit that is convenient for navigation and radar operation after considering the following suggestions:

12

(a) A place where you can see the ship's bow when you raise your face from the radar screen.

(b) A place where there is no direct sun-light to avoid display temperature up.

(c) A place where there is good ventilation and minimum vibration.

(d) A place where the display unit is apart more than the minimum safe dis-

tance from a magnet compass as listed in Tab.3-5 below. Tab.3-5 Minimum Safe Distance from Magnetic Compass Master compass Steering compass Scanner unit Display unit 2.0m 2.0m 1.4m 1.4m 3.3.3 Shifting away from obstacles

!!!! Shifting from keel line By shifting the scanner position from the keel line to the starboard side of the ship, it is possible to move shadow zones to the port side which makes it possible to keep clear vision in the bow direction. The distance to be shifted can be obtained by calculation depending on the distance from the scanner to obsta-

cles using the following equation:

Ls=0.4R+D/2 [m]

Ls=0.025R+D/2 [m]

where

(when R<15m)

(when R>=15m) Ls = distance to be shifted from keel line D = diameter of obstacle on keel line R = distance from scanner to obstacle Scanner Unit Obstacle Ls D Keel line R Fig.3-1 Shifting from keel line

"""" Obtaining sufficient dip angle Raise the scanner position so that there is a sufficient dip angle available between the line of sight from the scanner to the obstacle and the horizontal line. By raising the dip angle above 5, it is possible to prevent mid- and long-

distance shadow zones. The radar cannot detect objects below the line of sight. 13 Horizontal line Line of sight Fig.3-2 Obtaining sufficient dip angle 14 3.4 Installing Scanner Unit When you have decided the place of installation, install the scanner unit. If a mount base like the one shown below is available, it may be easier to install the scanner. If such a mount base is not available in your ship, you may install the scanner directly to the roof, etc. In such a case, pay attention to the water drain tube located at the bottom of the scan-

ner unit during installation. Note : When the radar mast or mounting bracket has a curvature of more than 2mm, repair it or use spacers. Do not use an edge that might trap water. Fig.3-3 Mount base Referring to Fig.3-4, open holes in diameter of 12 mm (0.47 in.) at five locations in the mount base and use these holes to fix the scanner unit to the mount base with hexagonal bolts. (Use the template included with this manual.) The bolts included with your radar equipment will suffice for mount base thickness of 9 to 14 mm (0.35 to 0.55 in.). If the mount base is thicker or thinner than this, prepare bolts listed in Tab.3-6. Use sealing of silicon when you prevent the bolts from becoming loose. Radome may be broken if you use locking putty. 12 4

(0.47 in.) 65

(2.56 in.) 170

(6.69 in.) 35

(1.38in.) Forward 214

(8.43 in.) Forward 199

(7.83 in.) Center 185

(7.28 in.) For air tube 15 (0.59 in.) Cable inlet 100 (3.97 in.) Rotation Radius R550 (3 ft antenna) R700 (4 ft antenna) 14 4

(0.55 in.) RA41C Radome scanner Fig.3-4 Hole positions for mounting scanner RA42C Open scanner Unit:mm 15 Chassis Radome(bottom) Mount base Washer Spring washer M10 Hexagonal bolt Included Fix four screws RA40C/41C Radome scanner 12 4

(0.47 in.) 65

(2.56 in.) 170

(6.69 in.) 35

(1.38in.) Forward 214

(8.43 in.) Center 185

(7.28 in.) Forward 199

(7.83 in.) Double nuts Spring washer Washer Scanner base Mount base Rotation Radius R550 (3 ft antenna) R700 (4 ft antenna) M12 Hexagonal bolt 14 4

(0.55 in.) Fix four screws For air tube 15 (0.59 in.) Cable inlet 100 (3.97 in.) RA41 Radome scanner Fig.3-4 Hole positions for mounting scanner RA42C Open scanner Forward RA42 Open scanner Unit:mm 12 5

(0.47 in.) Fig.3-5 Fixing Scanner Unit 140

(5.51 in.) 60

(2.36 in.) Center 140

(5.51 in.) 30

(1.18in.) For air tube RA40C Radome scanner Tab.3-6 Bolts for Mounting Scanner Unit Thickness of mount base 1-4mm(0.04-0.16 in.) 4-9mm(0.16-0.35 in.) 9-14mm(0.35-0.55 in.) 14-19mm(0.55-0.75 in.) Bolts necessary to fix radome scanner M10/M12 15 (1.5mm pitch) M10/M12 20 (1.5mm pitch) M10/M12 25 (1.5mm pitch) M10/M12 30 (1.5mm pitch) Material Stainless Stainless Stainless Stainless Remarks Included with radar 3.5 Installing Antenna Unit 16

Remove the protective cap covering the rotary coupler on the top of the scanner. Match the antenna radiation direction to direction of the arrow markings on the rotation base and fix the antenna in position using the four M8 accessory bolts. Arrow Antenna radiation surface 3.6 Installing Display Unit After you have finished installing the scanner unit, install the display unit in the same way. Choose the proper bolt length according to the thickness of the surface on which you are going to install the display unit. Hole diameter is different using bolts from using tap-

ping screw. When using tapping screw, open holes in adequate holes. When using bolts and nuts, open holes in diameter of 6 mm (0.24 in.). When you have opened holes, install the pedestal part first and then the display unit. 360

(14.17 in.) 84

(3.31 in.) Fitting hole 47 (1.85 in.) 37 (1.46 in.) 60 240 60

(2.36 in.)

(9.45 in.)

(2.36 in.) Hole diameter 6mm Adequate Recommended screw M5 or equivalent

: Bolts and Nuts

: Tapping screws Unit : mm Forward Fig.3-6 Hole positions for display unit Note : When you install the display by flush mount, refer to appendix "OUTLINE DRAWING". Slide off four triangle corner cover, and fix the display unit to the panel with screws. After fixing the display unit, put on corner covers to the corner of the display unit. See APPENDIX. 17

! WARNING Avoid a display from operating under direct sun-

light. It becomes high temperature at inside of dis-

play and display may be broken. 18 3.7 Connecting Cables Lay cables firmly in place by following the instructions below. Note1: Do not bind the cable for the radar collectively with cables of other Note2:

equipment (especially power supply cable). Leave clearance near the inlet of the display so you can remove the dis-

play unit easily. This facilitates installation and maintenance of the dis-

play unit. (Refer to Appendix.) Note3: Because the cable has a connector fitted on the display and scanner side, if it is necessary to pass cable through a narrow path, fix the scanner-side connector vertically using vinyl tape before passing cable through the path. Lay cable along the ship's hull or wall surface and attach it in place at intervals of about 40 cm. Note4:

3.7.0 Interconnecting cable (RA40C Radome scanner) (See Fig.3-8-1)

! Ensure that the radar is off. Connect the cable to the receptacle labeled "SCANNER"

on the rear panel of the display unit.

" Next, remove the upper part of the radome from the scanner unit. Avoid bumping it against the antenna by lifting vertically. (There are three fixing screws.)

# Remove the tape fixing the antenna.

$ Remove the shield cover located on the astern side. (There are three fixing screws.)

% Remove the cable clamping plate and rubber ring, pass cable through the introduc-

tion opening, put the rubber ring from both ends of it, and clamp the cable to the scanner unit with screws via the fixing plate. Plug the connector fitted to the cable into the X1 connector on the PCB.

& Replace the aluminum cover. At this time, attach a cable shield onto a ditch with the aluminum cover. However, be careful that the cable will not be caught up be-

tween the main unit and cover.

Replace the upper part of the radome. Be careful not to bump it against the antenna in the same way as when removing it. Make sure that the cover is fitted in the correct direc-

tion as shown in Fig.3-7-1. The upper and lower parts of the radome each have three markings indicating screw positions. Align the upper and lower positions as you mount the radome. Logo seal on side wall Ship's heading Fixing screws Fig.3-7-1 Fitting Cover (RA40C) 3.7.1 Interconnecting cable (RA41C Radome scanner) (See Fig.3-8-2)

! Ensure that the radar is off. Connect the cable to the receptacle labeled "SCANNER"

on the rear panel of the display unit.

" Next, remove the upper part of the radome from the scanner unit. Avoid bumping it against the antenna by lifting vertically. (There are four fixing screws.)

# Remove the tape fixing the antenna. 19

$ Remove the shield cover located on the astern side. (There are four fixing screws.)

% Remove the cable clamping plate and rubber ring, pass cable through the introduc-

tion opening, put the rubber ring from both ends of it, and clamp the cable to the scanner unit with screws via the fixing plate. Connect 7-pin connector to X11 and 9-pin connector to X12 of PCB.

& Replace the aluminum cover. At this time, attach a cable shield onto a ditch with the aluminum cover. However, be careful that the cable will not be caught up be-

tween the main unit and cover. Replace the upper part of the radome. Be careful not to bump it against the an-

tenna in the same way as when removing it. Make sure that the cover is fitted in the correct direction as shown in Fig.3-7-2. The upper and lower parts of the radome each have four markings indicating screw positions. Align the upper and lower po-

sitions as you mount the radome. Logo seal on side wall Ship's heading Cable inlet Fix four screws Fig.3-7-2 Fitting cover (RA41C) 20 Antenna Stern side Cable shield Shield cover Radome (bottom) Fixing plate Rubber ring Fix connector on PCB(X1) Interconnecting cable Inner shield PCB X1 (Connect here) Radome (bottom) Fig.3-8-1 Fitting interconnecting cable (RA40C) 21 Antenna Stern side Shield cover Cable shield Radome (bottom) Fixing plate Rubber ring Fix connector on PCB(X11, X12) Interconnecting cable PCB Inner shield X11 (Connect here) X12 (Connect here) Radome (bottom) Fig.3-8-2 Fitting interconnecting cable (RA41C) 22 3.7.2 Interconnecting cable (RA42C Open scanner) (See Fig.3-9)

! Ensure that the radar is off. Connect the cable to the receptacle labeled "SCANNER"

on the rear panel of the display unit.

" Use a T-wrench to remove the back covers of scanner unit.

# Remove the two bolts securing the transceiver; pull out the transceiver after removing two connectors.(to Motor(X1), to Heading switch (X2))

$ Remove the four bolts securing the fixing plate at the cable entrance.

% Remove the metal fixing plate, rubber seal and washer that secure the cable. Pass the cable through as shown in the diagram below; replace the above items and tighten the bolts.

& Return the transceiver to its original position and secure it with the removed bolts. Connect 7-pin connector to X11 and 9-pin connector to X12 of PCB. And connect two connector that removed at #.

( Refit the scanner covers. Take care not to pinch the cable when refitting the cover. 23 TR unit fixing bolts Remove connector Fixing bolt Fixing plate Fixing bolt Cable shield terminal Washer Fixing plate Scanner unit Inter-connection cable Clumper Inter-connection cable 5-10 mm Rubber Cable inlet Fig.3-9 Fitting interconnecting cable 24 3.7.3 Grounding wire

! WARNING Connect grounding wire before connecting power supply cable. Leakage current is too high. Connect grounding wire from the grounding terminal on the rear panel of the display unit to the ship's hull as shown below. Grounding wire SCANNER POWER OPTION Grounding terminal Fig.3-10 Grounding display unit to earth Connect grounding wire from one of the bolts you have attached when installing the scanner unit to the ship's hull as shown in Fig.3-11. (The crimp terminal and grounding wire are not included with the radar equipment.) Chassis Radome(bottom Mount base To ship's hull Crimp terminal Grounding wire Scanner cover Grounding wire To ships hull Radome scanner Open scanner Fig.3-11 Grounding scanner unit to earth 25 3.7.4 Power supply cable Power is fed through a knife switch ( or circuit breaker) and protective fuses, as shown in below. WARNING: Do not apply over 41.6V to Radar or Radar may be broken. Main switch panel

(Knife Switch with F ses) Generator Switchboard Charger Storage Battery 12/24V Radar Display Unit DC voltage reference points Fit the power supply cable (included with your radar) to the receptacle labeled "POWER"

on the rear panel of the display unit. And connect to power supply as followings. (When you do not connect external equipment, put tape on red and green wire.) Place the Fuse and connection part where there is no water splash and dry area. When extend the power supply cable, use a suitable cable as below. Cable max. length cross section Ship's Power Voltage Cable conductor 12Vdc 24Vdc Power supply cable To display unit 3.5 mm2 6.0 mm2 2.0 mm2 3.5 mm2 3 m 5 m 6 m 10 m Red Green Gray Black White NMEA+

NMEA-

To external equipment Ground DC-

DC+

To power supply Fig.3-12 Power supply cable 3.8 Adjustment

! CAUTION Be sure to operate the following adjustment. If this is not adjusted properly, the radar picture does not display true image. When you have finished installing the scanner and display units and connecting cables, turn on the power to the display and scanner units and check to see if they operate nor-

mally without problem. Then make adjustments as detailed below and check to see if the units operate normally again. 26

! TUNING

" HEADING DIRECTION

# DISTANCE Refer to Adjusting tuning circuit in 5.5.4.5.4 Refer to Adjusting angle in 5.5.4.5.4 Refer to Adjusting distance in 5.5.4.5.4 3.9 Connecting External Equipment to Display Unit The display unit has two channels of NMEA input. One is standard in power cable. The other is necessary to connect optional parts (Junction box with OPTION cable). OPTION connector is located at displays rear panel for connecting external equipment such as a GPS, LORAN, or gyro compass. You must have an Junction box with OPTION ca-

ble. (Refer to CHAPTER 8 (4) External interface.) Note: SIN/COS and MOB signals cannot be used on Junction Box. Junction box with OPTION cable (Order No. RZ704A) SCANNER PO WER OP TION Junction box*note OPTION cable Other radar, slave monitor, External buzzer, Gyro I/F External NMEA equipment Other radar, slave monitor, External buzzer, Gyro I/F, SIN/COS. MOB(NMEA out) POWER cable To power supply Green Red

:NMEA-

:NMEA+

External NMEA equipment Fig.3-13 Connecting external equipment to display unit 3.10 Countermeasure for Electromagnetic Interference RA40C/41C/42C radar provides shields in the units and the inter-unit connection ca-

ble. When the radar, however, is closely installed to radio equipment such as VHF trans-

ceiver, UHF transceiver, etc., or the radar and/or radio equipment are not sufficiently grounded to the hull or ship's earth, the radar may happen to cause EMI trouble. Followings are general procedures for reducing EMI due to radars. When installing ra-

dars, refer to them, and also check the radio equipment EMI trouble with operating the ra-

equipment. dar radio and 27

(1) Installation Place of Radar The display unit, scanner unit and inter-unit connection cable should be located apart from the main unit, feeder, antenna coupler and antenna of radio equipment as far as possible. Especially, proper installation of the feeder, antenna coupler and antenna of radio equipment is very important to improve EMI trouble.

(2) Laying Power Supply Cables Following connections A and B are recommended to reduce conduction noise gener-

ated from radar. Connection C should not be used. Connection A

(Very Good) RADAR RADIO EQUIPMENT SHIP'S SUPPLY SHIP'S SUPPLY Connection B

(Good) Connection C

(Bad) RADAR SHIP'S SUPPLY RADIO EQUIPMENT RADAR SHIP'S SUPPLY RADIO EQUIPMENT

(3) Grounding or braided wires. All equipment should be firmly grounded at the earth nearest hull with copper plates Improvement Procedure for EMI

(1) Confirm grounding on the radar and radio equipment. However, some equipment, on which grounding is not always necessarily, have a possibility of EMI improving when taking off their grounding. Try to take off grounding.

(2) Confirm power supply cable connections and modify to the connection A or B above.

(3) Try to shift the display unit and inter-unit connection cable of radar to be apart from

(4) Try to shift the feeder of radio equipment to be apart from each units and the inter-

radio equipment. unit connection cable of radar.

(5) Try to shift the antenna coupler and antenna of radio equipment to be apart from the scanner unit and inter-unit connection cable of radar. 3.11 When Discarding Your Radar When discarding your RA40C/41C/42C radar, consult the distributor to get informa-

tion on precautions to be followed. Tab.3-7 below lists the primary component materials of the RA40C/41C/42C radar for your reference. Tab.3-7 Component Materials Scanner unit Material Radome Chassis Base Antenna AES A5052P ADC12 A5052P Display unit Material Front panel Rear panel Pedestal ADC12 ABS+PC ABS 28

CHAPTER 5. OPERATION Basic operation of radar The RA40C/41C/42C radar has several fixed-function keys on the front panel. These functions can be controlled by simply pressing the key. Also, special functions can be customized to soft-keys by user-setting. The followings explain the operation of each keys. 5.1 Powering On and Off

(1) Powering On Press the "POWER" key. Buzzer sounds "pi" and starts the radar system. Screen brilliance is set to the level that of the radar system has been powered off.

(2) Powering off Keep pressing the "POWER" key more than 3 seconds, then the radar system will power off. 5.2 Adjusting brilliance of screen and key-backlight

(1) Press the "BRILL" key. (Bar and figure indicating brilliance, and figure indicating key-

backlight appear on the screen.)

(2) Adjust each items with the control knob. Items can be selected by up-down cursor.

(3) When the adjustment is finished, press either the "BRILL" key or the "ENT" key to exit from the adjustment screen. (Pressing some other key after adjustment will lead to the function of the pressed key.) BRILL

- Control knob (Adjustment of brilliance) ---- BRILL or ENT Up/Down (Selection of brilliance, key-backlight) Other function key Move to other functions

.75

.25 HU STBY

BRILLIANCE 50 KEY BACKLIGHT 4 29

5.3 Basic Operations xxx = keys to press 5.3.1 Powering On and Off POWER ON POWER Press "POWER"key to power on. 2 minutes timer and "RADAR OFF" are displayed. Keep pressing "POWER" key to power off. SCREEN BRILL Press the "BRIL" key. Control bar is indicated on the screen. 75

.25 HU brilliance Up/Down Select brilliance. Control knob key backlight Up/Down Control knob 1:58 Adjust brilliance with knob.

Select key backlight. RADAR OFF Adjust key backlight with BRILLIANCE 50 ENT knob. Press "ENT"key to return. KEY BACK LIGHT 4 Radar turns into "ST'BY"mode when 2 minutes timer is finished and

"ST'BY" is displayed. 5.3.2 Transmitting START POWER Press "POWER" key to the radar picture operate, appears on screen. Another press "POWER" key, radar to stand-by mode. turns D V T DQT gt AT

Keep pressing "POWER" key more than 3 seconds, radar turns to power off. CHANGE RANGE RANG UP or RANGE DOWN Pressing "RANGE UP" key produces a long-distance range, range.

"RANGE DOWN" key a short-distance 30 5.3.3 Adjusting brilliance of screen and key-backlight xxx = keys to press

(1) Press the "BRILL" key. (Bar and figure indicating brightness, and figure indicating back-

light appears on the screen.)

(2) Select brilliance or key-backlight with the up-down cursor.

(3) Adjust each item with the control knob.

(4) When the adjustment is finished, press either the "BRILL" key or the "ENT" key to exit from the adjustment screen. (Pressing some other key after adjustment will lead to the function of the pressed key.) BRIL Control knob (Adjustment of brilliance) BRIL or ENT Up/Down (Adjustment of brightness, panel) Other function key Shift to other functions

. 75

. 25 HU STBY

BRILLIAM CE 50 KEY BACKLIGNT 4 5.3.4 Changing Distance Range (RANGE UP, RANGE DOWN) Pressing "RANGE UP" key produces a long-distance range, and "RANGE DOWN" key a short-distance range. RADOME SCANNER (RA40C) RANGE 0.125 0.25 Number of 2 2 0.5 2 0.75 3 1.5 6 3 6 6 rings Range ring interval 0.062 0.125 0.25 0.25 0.25 0.5 5 RADOME SCANNER (RA41C) RANGE Number of rings 0.125 2 0.25 2 0.5 2 Range ring interval 0.0625 0.125 0.25 OPEN SCANNER (RA42C) RANGE Number of rings 0.125 2 0.25 2 0.5 2 Range ring interval 0.0625 0.125 0.25 0.75 3 0.25 0.75 3 0.25 1.5 6 0.25 1.5 6 0.25 3 6 0.5 3 6 0.5 12 6 24 6 2 4 12 6 2 12 6 2 24 6 4 24 6 4 6 1 6 6 1 6 6 1 36 6 6 48 6 8 5.3.5 Automatic adjustment (AUTO) AUTO adjusts the GAIN, STC and FTC automatically. If the "AUTO" key is pressed while GAIN, STC, or FTC are under manual settings, they will all be switched to AUTO or HBR(Harbor) mode. Pressing "AUTO" key, AT1, AT2 and HBR changes in turn. Pressing STC key, all 31

controls return to manual state. AT1 Use when find navigation way in much echo such as port area, narrow channel, small islands area. The control condition is similar to slightly down GAIN. AT2 Use at open sea to suppress the sea clutter. The control condition is similar to high GAIN. HBR Use at in a bay area, inlet, or a harbor. The control condition becomes manual STC by using the value established HARBOR of ADJUST menu. Note) Refer to "Setting STC circuit(STC)" in section 5.5.4.5.4(6). Note) When you select HBR mode, FTC will be switched to MANU mode.

* What happens if GAIN, STC, and FTC keys are pressed during AUTO operation?

1) If GAIN key is pressed, 2) If FTC key is pressed, 3) If STC key is pressed, Only GAIN enters a manual state. Only FTC enters manual state. STC, GAIN, and FTC enter manual state. 5.3.6 Sensitivity adjustment (GAIN)

(1) When the "GAIN" key is pressed, the GAIN display on the left side of the screen will be reversed as G 35 and the adjustable state will be entered.

(2) When the control knob is turned, the figure will be shifted within a range of 0 and 99, and the sensitivity can be manually adjusted. When the "AUTO" key is pressed, all (GAIN, STC and FTC) will enter an AUTO state.

(3) After the adjustment is finished, press the

"GAIN" key to exit from the adjustment state. If some other function key is pressed, shift to that function will take place. 75

.25 HU G 50 STBY

(a) To make adjustments by MANUAL (When the GAIN key is pressed under AUTO operation, shift to a manual operation will take place.) GAIN Control knob GAIN -------------------------The adjustment state is ended.

> AUTO

Other function key

------Shift to other functions AUTO ------------------------GAIN, STC, and FTC are set at AUTO and the adjustment state is ended.

(b) To switch from the MANUAL state AUTO -------------------------------------------------------------------------Set GAIN, STC and FTC at AUTO 5.3.7 Removing sea clutter (STC) 32

(1) When the "STC" key is pressed, the STC display on the left side of the screen will be reversed as S 35 and the adjustable state will be entered.

(2) When the control knob is turned, the figure will be shifted within a range of 0 and 99, and the STC can be manually adjusted. When the "AUTO" key is pressed, all (GAIN, STC and FTC) will enter an AUTO state.

(3) After the adjustment is finished, press the "STC" key to exit from the adjustment state. If some other function key is pressed, shift to that function will take place.

(a) To make adjustments by MANUAL (When the STC key is pressed under AUTO operation, shift to a manual operation will take place.) STC Control knob STC ----------------------------The adjustment state is ended. AUTO Other function key

--------Shift to other functions AUTO --------------------------STC, GAIN, and FTC are set at AUTO and the NOTE) When you select MANU mode, GAIN and FTC will be switched to MANU mode, too. adjustment state is ended.

(b) To switch from the MANUAL state AUTO -------------------------------------------------------------------------Set STC, GAIN and FTC at AUTO 5.3.8 Removing rain and snow clutter (FTC)

(1) When the "FTC" key is pressed, the FTC display on the left side of the screen will be reversed as F 500 and the adjustable state will be entered.

(2) When the control knob is turned, the figure will be shifted within a range of 0 and 99, and the sensitivity can be manually adjusted. When the "AUTO" key is pressed, all (GAIN, STC and FTC) will enter an AUTO state.

(3) After the adjustment is finished, press the

"FTC" key to exit from the adjustment state. If some other function key is pressed, shift to that function will take place. 75

.25 HU F 50 STBY

(a) To make adjustments by MANUAL (When the FTC key is pressed under AUTO operation, shift to a manual operation will take place.) FTC Control knob FTC -------------------------The adjustment state is ended.

> AUTO

Other function key -------Shift to other functions AUTO ------------------------GAIN, STC, and FTC are set at AUTO and the adjustment state is ended.

(b) To switch from the MANUAL state AUTO -------------------------------------------------------------------------Set GAIN, STC and FTC at AUTO 33 5.3.9 Man Over Board (MOB) Pressing the MOB key will send the own ship's position data to the external equipment through NMEA port with "WPL" format. There is no change on the screen. To check the MOB position data, select "MOB" from the "WINDOW" menu in the "SETUP". The position of MOB and current position will be displayed on the screen. If press the "MOB"

key while watching the MOB screen, MOB data will be cleared and return to previous screen. If press other keys, MOB data will be remained and return to previous screen. 34

5.4 Functions of Soft Keys xxx keys to press

Outline of soft keys Any function can be optionally allocated to the key upon which numbers 1-7 are indicated. A maximum of 4 groups of functions can be allocated to each soft key, and switching between those functions is conducted by the "NEXT" key. 5.4.1 Bearing measurement (EBL1)

(a) Bearing measurement by EBL1

(1) When "EBL1" key is pressed, electric bearing line (EBL1) appears and the angle from the direction of the ships head which is set at 0 will appear in a reverse display at the lower left of the screen(Note).

(2) Use the control knob to place the direction cursor on the target, and read the angle.

(3) After the setting i) If "EBL1" key is pressed, the setting is completed. ii) If "other function" key is pressed, the function will be shifted to that of the pressed key with the setting condition still in effect. note: 1 xxx.x indicates EBL1. EBL1 Control knob EBL1 EBL1 is displayed and the process is finished.

EBL1

Other function key EBL1 is displayed and the function is shifted. EBL1 is turned off.(b)

(b) To turn off the EBL1 When the "EBL1" key is pressed twice, EBL1 disappears. (EBL1 OFF) Note: Refer to "5.5.1.1 Bearing measurement (EBL1)". 5.4.2 Bearing measurement (EBL2) The operation is the same as EBL1. Refer to the EBL1 operation. The "EBL2" will appear in a reverse display at the lower right of the screen 5.4.3 Distance measurement (VRM1)

(a) Distance measurement by VRM1

(1) When "VRM1" key is pressed, variable range marker (VRM1) appears and the distance in a reverse display appears at the lower left of the screen.

(2) Place the marker on the front edge of the target with the control knob and read the distance.

(3) After the setting i) If "VRM1" key is pressed, the setting is completed. ii) If "other function" key is pressed, the function will be shifted to that of the pressed key with the setting condition still in effect. note: 1 xxx.x NM indicates VRM1. 35 VRM1 Control knob VRM1 VRM1 is displayed and the process is finished.

VRM1

Other function key VRM1 is displayed and the function is shifted. VRM1 is turned off.(b)

(b) To turn off the VRM1 When the "VRM1" key is pressed twice, VRM1 disappears. (VRM1 OFF) Note: Refer to "5.5.1.2 Determining the distance (VRM1)". 5.4.4 Distance measurement (VRM2) The operation is the same as VRM1, refer to VRM1 operation. The "VRM2" will appear in a reverse display at the lower right of the screen 5.4.5 Measuring the angle between two points (FL EBL2) Note: VRM2 and EBL2 do not follow the OFF-C function while floating. Note: Refer to "5.5.1.5 Measuring the distance or angle between two points ( FL EBL2, FL VRM2 )".

(a) Setting a reference point for measurement of the angle.

(1) Press "FL EBL2" key. SET START POINT is displayed and a small cross mark appears. FL EBL2 FL EBL2 is turned ON and

(Select FL EBL2) the small cross mark appears.

(2) Use the left-right and up-down cursor keys to place the small cross mark on one of the two echoes whose angle will be measured, and press the "ENT" key. Up/Down & Left/Right

------ ENT Criterion of the reference point is set.

(Place the cross cursor on an echo)

(b). Measuring Perform the operations in the above mentioned and "measuring the angle(EBL2)", and place the EBL2 on another echo. EBL2 is displayed on the screen based on the placed fixed cross cursor.

" 2 xxx.x" which is displayed at the lower right will be the angle between the two points. 5.4.6 Measuring the distance between two points (FL VRM2) Note: Refer to "5.5.1.5 Measuring the distance or angle between two points ( FL EBL2, FL VRM2 )".

(a) Setting a reference point for measurement of the angle. 36

(1) Press "FL VRM2" key. SET START POINT is displayed and a small cross mark appears. FL VRM2 FL VRM2 is turned ON and

(Select FL VRM2) the small cross mark appears.

(2) Use the left-right and up-down cursor keys to place the small cross mark on one of the two echoes whose angle will be measured, and press the "ENT" key. Up/Down & Left/Right

------ ENT Criterion of the reference point is set.

(Place the cross cursor on an echo)

(b) Measuring Perform the operations in the above mentioned and "measuring the distance(VRM2)", and place the VRM2 on another echo. VRM2 is displayed on the screen based on the placed fixed cross cursor.

" 2 xx. xNM" which is displayed at the lower right will be the distance between the two points. 5.4.7 Changing the group of Soft Keys (NEXT) Any function can be optionally allocated to the key upon which numbers 1-7 are indicated. A maximum of 4 groups of functions can be allocated to each soft key, and switching between those functions is conducted by the "NEXT" key. The "NEXT" key switches between allocated function groups on the soft key which numbers 1-7 are indicated. NEXT 7 NEXT 7 NEXT 7 NEXT 7

, function groups changes to another groups included pressing "NEXT" key. The function groups can also be changed at the "KEY ASSIGNMENT"

function in the "CUSTOM" menu of the "SETUP" with left-right cursor key. Operation_ _Soft Key Setting Example_ SET1 SET2 SET3 SET4 EBL1 VRM1 1 2 EBL2 VRM2 1 2 VAR RNG 3 FL EBL2 3 TRACK 4 TARGE 5 FL GZ 4 5 RINGS 1 TUNE ST ZOOM SLEEP 2 3 4 5 SEL WIN 6 OFF-C 6 PICTURE 6 NEXT 7 NEXT 7 NEXT 7 PPI 1 PPI/3D 2 PPI/PP 3 PPI/NAV 4 ALL 5 ALL 6 NEXT 7 37 The function can be changed at the "KEY ASSIGNMENT" function in the

"CUSTOM" menu of the "SETUP". 38 5.4.8 Erasing heading maker temporarily (HDG OFF) Press the HDG OFF key. The heading marker is not displayed as long as you hold it down. 5.4.9 Using parallel cursors (///CSR) Press the ///CSR key. Parallel cursors will appear on the screen. As you move EBL, the parallel cursors also move. To cancel the "///CSR" function, press "///CSR" key once more. Note: Refer to "5.5.1.8 Using parallel cursors (///CSR)". 5.4.10 Establishment of the indication of the RANGE RINGS (RINGS) Press the RINGS key. Range Rings will appear on the screen. To cancel the "RINGS"

function, press "RINGS" key once more. Note: Refer to "5.5.1.9 Establishment of the indication of the RANGE RINGS (RINGS)". 5.4.11 ON/OFF of variable range function (VAR RNG) Usually the range changes in steps as 0.5--0.75--1.5--3.0--....., but using this function will enable a consecutive change such as 0.5--0.6--0.7--0.8--..... Press the VAR RNG key. The VAR RNG function becomes valid and VAR will be displayed at the upper left of the screen (beside MODE). To cancel the "VAR RNG" function, press "VAR RNG" key once more. The range changes continuously with the up-down cursor while the VAR RNG function is on, and it changes in steps with the "RANGE UP" or "RANGE DOWN" keys. If pressing other keys, return to the normal state from continuously range change state. 5.4.12 Changing display modes (MODE)

(1) Select MODE from the pull-down display items using the up-down cursor keys, and press the "ENT" key.

(2) When the HU/HS/NU/CU/TM sign is displayed beside the MODE item, select display mode with the up-down cursor keys and press the "ENT" key.

(3) The setting will be completed when the "ENT" key is pressed after the selection. (NOTE1,2) Press the "MODE" key, the display mode will change on every pressing to HU, HS, NU, CU, TM in order. The mode select at the upper of the screen is indicated. However, a setting will be needed for the ships speed if TM is selected. Also, a heading or a course information is necessary for NU, CU and TM.

: . Note: Refer to "5.5.2.1 Changing display mode (MODE)". 5.4.13 Guard Zone (GZ) 39 A function that sets a guard zone of any distance and any angle range, creating alarm tone when either echoes above a certain level exist (IN MODE) or no echoes exist(OUT MODE). When GZ is operated with soft keys, guard zone settings and ON/OFF settings can be conducted, but the mode (IN or OUT) is to be set in the menu. Note: Refer to "5.5.2.2 Guard Zone (GZ)".

(1) When the "GZ" key is pressed, the present mode setting will be displayed on the left side of the screen as GZ IN. A small cross cursor for setting the guard zone will be displayed at the screen center while "SET CENTER POINT" is displayed at the bottom, activating a guard zone setting state.

(2) Use the up-down/left-right cursor keys to move the cross cursor to the center of the warning zone to be set, and press the "ENT" key.

(3) From the cross cursor position set in (2) above as the center, expand the guard zone in the direction of the distance with the up cursor key and in the direction of the angle with the right cursor key, thus making the form of a fan. To make the warning zone smaller, operate the down cursor key (in the direction of the distance) and the left cursor key (in the direction of the angle).

(4) After the setting the guard zone, finish by pressing the "ENT" key. Press the GZ key twice to cancel the guard zone function. GZ Up/Down & Left/Right ENT Up/Down & Left/Right ENT Setting completed

(Setting the center of GZ) GZ

(Setting the scope of GZ)

-------------------------------------------------------------------------------------------------------- Canceling GZ

Stop the alarm tone Press the "MENU" key or "ENT" key during the alarm tone sounds, alarm tone will stop.

: Set the mode (IN or OUT) at the "GZ MODE" of the "PRESET2" function in the

"CUSTOM" menu of the "SETUP"

Set the alarm level (IN or OUT) at the "GZ LVL" of the "PRESET2" function in the

"CUSTOM" menu of the "SETUP"

5.4.14 Off Center (OFF-C) Displaying the location specified by the cross cursor as the ship's location Note: Refer to "5.5.2.3 Shifting display in specific direction (OFF-C)".

(1) When the "OFF-C" key is pressed, OFF-C is displayed at the upper right and "SET OFF CENTER POINT" at the bottom of the screen, and setting is ready to be entered.

(2) Move the cross cursor with the cursor keys to move the ship to the intended location, and press the "ENT" key. The ship's location will be displayed as the cursor's location. OFF-C is displayed at the upper right , which indicates that the "OFF-C" state is entered.

(3) To cancel "OFF-C" function, press the "OFF-C" key.

(a) To conduct the setting 40 OFF-C Up/Down & Left/Right ENT ---------------- Conduct Off Center to exit the adjustment state. Note: VRM2 and EBL2 do not follow the OFF-C function while floating. The function operates on PPI screen only.

(b) To cancel the setting OFF-C

---------------------------------------------------The "OFF-C" display at the upper right disappears and function returns to the ordinary state from the Off Center state. 5.4.15 Setting of the SLEEP function(SLEEP) This function sends a 30-second-transmissions during pre-fixed hours. After a transmission, a power-saving mode is entered with the screen in ST'BY state (the scanner-OFF state) and the LCD backlight turned off. This action is repeatedly executed. Usage example, set a guard zone and have the warning signal automatically confirmed every prefixed period. Press the "SLEEP" key. Every pressing the key, "SLEEP" function will be set as 5-minutes, 10-minutes, 15-minutes, or off. When a transmission is conducted after setting a SLEEP mode, a ST'BY state is entered and the backlight turns off after a 30-second-transmission. (Power-saving mode). Two minutes before the fixed time the backlight turns on and the 2-minute timer starts. Then, at the fixed time another 30-second-transmission begins. This series of actions are repeated. If any one key is pressed during the course of this action, the SLEEP function will be canceled. Note: Refer to "5.5.2.4 Setting of the SLEEP function(SLEEP)".

(1) Setting procedure SLEEP

(Select 5min.) ENT SLEEP

(Select 10min.) ENT SLEEP

(Select 15min.) ENT POWER --- 30-second-transmission every 5 min. transmission ON POWER --30-second-transmission every 10 min. transmission ON POWER --30-second-transmission every 15 min. transmission ON

(Select OFF) --------------------------------------- SLEEP function is turned OFF SLEEP Setting completed 5.4.16 Tuning adjustment (TUNE)

(1) When the "TUNE" key is pressed, the TUNE display on the upper-right side of the screen will be reversed as 35 and the adjustable state will be entered.

(2) When the control knob is turned, the figure will be shifted within a range of 0 and 41 99, and the receiver tuning can be manually adjusted.

(3) After the adjustment is finished, press the "ENT" key to exit from the adjustment state. If some other function key is pressed, shift to that function will take place. TUNE Control knob

--------------- TUNE or ENT The adjustment state is ended.

(tuning adjustment) -> --------------- Other function key Shift to other functions Note: Use the "MENU" to return auto-tuning state. Note: Refer to "5.5.3.4 Adjusting receiver tuning (TUNE)". 5.4.17 Echo expansion (ST) Expanding the echo to the direction of the distance. When the "ST" key is pressed, "ST1" is displayed on the left side of the screen and the state of echo expansion is entered. This changes the picture to display echoes expanding in the direction of the distance. Two types of echo expansion exist, which are alternated as follows , every time this key is pressed. Note: Refer to "5.5.3.5 Echo expansion (ST)". ST1 ST2 OFF

Expansion rate ST1 < ST2 Note: The "OFF" state is not displayed on the screen and the "ST2" display disappears. 5.4.18 Displaying locus of target (TRACK) When the "TRACK" key is pressed, "TK 15SEC" is displayed on the left side of the screen and track mode is entered. 15S indicates the length of the track, and displays a maximum of 15-

second-long sailing track. Note: Refer to "5.5.3.6 Displaying locus of target (TRACK)". Every time this key is pressed, the course length switches as follows. 15 sec 30 sec 1 min 3 min 6 min CONT OFF Note: The "OFF" state will not displayed on the screen and the "TK xx " display will disappear. 5.4.19 Enlarging selected areas (ZOOM) The video image centering around the cross cursor is doubled as it is displayed on the screen. Press the "ZOOM" key to "ZOOM" ON. A small cross cursor for setting and "SET ZOOM POINT" are displayed at the screen center and at the bottom respectively, and the magnification point is to be set. Use cursor keys to move the cross cursor to the point to be magnified, press 42 the "ENT" key and the setting is completed. The area around the cross cursor is displayed in 2x magnification, with blinking "ZOOM" displayed at the screen upper right, indicating that a ZOOM display is being conducted. To cancel the ZOOM function, press the "ZOOM" key again or change the range scale. Note: Refer to "5.5.3.7 Enlarging selected areas (ZOOM)". ZOOM Up/Down & Left/Right ENT

-------------------- ZOOM setting

(Move cross cursor)

(Select OFF) ZOOM

------------------ ZOOM canceled Note1: VRM2 and EBL2 do not follow the ZOOM function during a floating state. Note2: Normal screen returns when you change the range scale. Note3: ZOOM function is unusable in 3D/PPI screen. Note4: ZOOM function is unusable in OFF-C. Note5: Center of ZOOM can be set any desired position within the set range. 5.4.20 Increasing sensitivity (S/L) The pulse width is automatically changed as you change the range. However, if you want to increase sensitivity, you can choose sensitivity from two pulse lengths. The short pulse

(SHORT) gives you sharp images with high distance resolution. The long pulse (LONG) provides high sensitivity and shows targets in large size for easy identification although distance resolution is reduced. Press the "S/L" key to select the Pulse length(LONG or SHORT). The pulse length changes L(Long) and S(Short) alternately. Note: Refer to "5.5.3.8 Increasing sensitivity (S/L)". S/L (Select SHORT) Set to short pulse

> or (Select LONG) Set to long pulse 5.4.21 Switching the screen (SEL WIN) Switching to the desired screen for activation on a 2-screen display(PPI+PPI). When change the range, or adjust the GAIN, STC, or FTC, or control the VRM, EBL, select the desired screen first. ex.) To be used for switching the range on the PPI+PPI screen. When the "SEL WIN" key is pressed, the range of the selected screen will be displayed in reverse, indicating that the screen is active. Note: Refer to "5.5.4.2 Switching screens on PPI/PPI screen ( SEL WIN )". SEL WIN (Select right screen) Right screen activated 43

> or (Select left screen) Left screen activated If VRM1 is controlled on the screen that is oposit from current VRM1 displayed screen, VRM1 is moved and displayed to activated screen. The EBL1, EBL2, and VRM2 is the same manner. 5.4.22 Changing the color of screen (PICTURE) The LCD display is affected by weather and day / night environment conditions. In some cases, you may find the LCD display is easier to view when the entire color of screen is changed. Press the "PICTURE " key, a day display will appear if night display has been selected, and a night display if day display selected. Note: Refer to "5.5.4.3 Changing the color of screen (PICTURE)". 5.4.23 Change to PPI screen ( PPI ) Press the "PPI" key, the screen will change to PPI screen. Use to change the screen from other modes to PPI. 75

.25 HU

PPI screen 5.4.24 Change to SEMI3D/PPI screen ( SEMI3D ) Press the "SEMI3D" key, the screen will change to SEMI3D/PPI screen. Use to change the screen from other modes to SEMI3D/PPI. 75 .25 HU S

Note: All controls, such as EBLs, VRMs effects both screen. The ZOOM, OFF-C, FL EBL2, and FL VRM2 could not be used on this mode. The "SEMI3D" screen displays the center as ship's heading always. 280 320 000 040 080 SEMI3D/PPI screen 5.4.25 Change to PPI/PPI screen ( PPI/PPI ) 44 Press the "PPI/PPI" key, the screen will change to PPI/PPI screen. Use to change the screen from other modes to PPI/PPI. 75 .25 HU S 24 6 Note:

(1) The radar picture is refreshed with two scanning interval for each screen. Right screen picture is holded during refreshing left screen, left screen holded during refreshing right screen.

G 55/35 S 35/AT F 35/AT PPI/PPI screen LEFT screen RIGHT screen ********/---------/********/---------/********/---------/

/---------/********/---------/********/---------/******** time

(2) The ZOOM, OFF-C, FL EBL2, and FL VRM2 could not be used on this mode.

(3) The range, GAIN, STC, FTC, GZ can be used independently for selected window with "SEL WIN". Selected window is that the range displayed in reverse character. Please refer to "SEL WIN".

(4) The cross cursor can be controlled on selected window. 5.4.26 Change to PPI/NAV screen ( PPI/NAV ) Press the "PPI/NAV" key, the screen will change to PPI/NAV screen. Use to change the screen from other modes to PPI/NAV. Note:

The ZOOM, OFF-C, FL EBL2, and FL VRM2 can not be used on this mode. 75 .25 HU s

NAV DISPLAY WAY P 123.4 6.8NM COURSE 2.38NM XTE <<<<

267.3T HDG 12.8 j s SPD 20.8C TEMP DEPTH 58.3M LAT/LON 34 08. 22N 138 02 .53E PPI/NAV screen 5.4.27 Change to ALL PPI screen ( ALL PPI ) Press the "ALL PPI" key, the screen will change to ALL

.75

.25 HU PPI screen. Use to change the screen from other modes to ALL PPI.

Note:

(1) The range, rings interval, display mode are displayed on the upper left of the screen. refreshing radar picture

(2) Return to PPI screen mode pressing a key except MENU, range UP or DOWN, or POWER key. ALL PPI screen 5.4.28 Change to ALL PPI/PPI screen ( ALL PPI2 ) holding previous picture 45 Press the "ALL PPI2" key, the screen will change to ALL PPI/PPI screen. Use to change the screen from other modes to ALL PPI/PPI. 75 @.25 HU S

.25 .125 Note:

(1) The range, rings interval, display mode are displayed

on the upper left of each screen.

(2) Return to PPI/PPI screen mode pressing a key except MENU, range UP or DOWN, or POWER key. ALL PPI/PPI screen

(3) The radar picture is refreshed with two scanning interval for each screen. Right screen picture is holded during refreshing left screen, left screen holded during refreshing right screen. When your ship navigates in high speed, use PPI screen to get fast refreshing picture. 46

5.5.2 Nav (Navigation) Menu xxx = keys to press Radar functions for navigation aid are in this menu.

Common operations for the NAV menu

(Up to the point when "NAV" menu is selected from the main menu) Press the "MENU" key and select "NAV" from the displayed 4 main menus using the left-right cursor. (The contents of the selected MENU will appear on a pull-down display in accordance with the movement of the left-right cursor.) MENU Left/Right

(Select NAV) Further explanation about the NAV menu will be conducted on the assumption that this

"common operation for the NAV menu" has already been completed. 5.5.2.1 Changing display mode (MODE)

(1) Select MODE from the pull-down display items using the up-down cursor key, and press either the "ENT" key.

(2) When the MODE sign is displayed beside the MODE item, select a mode with the up-down cursor keys and press the "ENT" key.

(3) The display mode indicates upper-left on the screen. 75

.25 HU L

0.23 NM NAVIGATION AT MARK NAV ECHO SETUP MODE >

GZ

OFF-C SLEEP

HU HS NU CU TM UP/DOWN -->

UP/DOWN

Select MODE

(Select HU

(Select HS

(Select NU

Head up

Head set

North up

(Select CU

Course up

(Select TM

(True motion) Note1: Navigation equipment (gyrocompass, magnet compass, or GPS) must be connected to your radar in NU, CU and TM modes. Note2:

In or

(1) Input of speed information from NMEA. (2) Set your ships speed manually. TM modes necessary follow set

(1) as to is it Note3: TM works only on PPI screen, NU is used automatically for the other screens.

(2). 52

5.5.2.2 Guard Zone (GZ) A function that sets a guard zone of any distance and any angle range, creating alarm tone when either echoes above a certain level exist (IN MODE) or no echoes exist(OUT MODE). Setting guard zone

(1) Select GZ from the pull-down display items using the up-down cursor keys, and press the ENT key. ON/OFF sign is displayed beside the GZ item. Up/Down --> ENT ------------------------------- ON/OFF sign is displayed.

(2) Select ON by common operation for the GZ menu, and press the ENT key.

(3) The present mode setting will be displayed on the left side of the screen as GZ IN. A small cross cursor for setting the guard zone will be displayed at the screen center while "SET CENTER POINT" is displayed at the bottom, activating a guard zone setting state. GZ IN SET CENTER POINT

(4) Use the up-down and left-right cursor keys to move the cross cursor to the center of the warning zone to be set, and press the "ENT" key.

(5) From the cross cursor position set in (4) above as the center, expand the guard zone as follows. Expand with the right cursor key in the direction of the angle. Use the left cursor key to make the zone GZ IN The central position of the guard zone. With this point as the center, the zone can be expanded in the directions of the distance and the angle with the upper keys cursor right and The mode (IN or OUT) is displayed when the state is ON. Nothing is displayed when it is OFF. Expand with the up cursor key in the direction of the distance. Use the down cursor key to make the zone smaller.

(6) After the setting the guard zone, finish by pressing the "ENT" key. To cancel the guard zone function, select OFF by common operation for the GZ menu, and press the ENT key. ENT --> Up/Down & Left/Right --> ENT --> Up/Down & Left/Right --> ENT ---------------- Setting completed

(Setting the center of GZ)

(Setting the scope of GZ)

53 Stop the alarm tone When the alarm sounds, press any key to stop. But the guard zone function is still working, the alarm may sounds again. To "OFF" the guard zone function, select "OFF"

from GZ menu. Note1: To switch the IN or OUT mode, refer to Guard Zone Mode in section 5.5.4.5.3 Changing the content of settings 2 (PRESET2) Note2: To set the guard zone level, refer to Guard Zone LeveL in section 5.5.4.5.3 Changing the content of settings 2 (PRESET2) 5.5.2.3 Shifting display in specific direction (OFF-C) Displaying the location specified by the cross cursor as the vessel's location.

(1) Select OFF-C from the pull-down display items using up-down cursor key, and press the

"ENT" key.

(2) When the ON/OFF sign is displayed beside the OFF-C item, select ON with the up-down cursor keys and press the "ENT" key.

(3) OFF-C is displayed at the upper right and "SET OFF CENTER POINT" at the bottom of the screen, and setting is ready to be entered. Move the cross cursor with the cursor keys to move the ships to the intended location, and press the "ENT" key. The ships location will be displayed at the cursor's location. The display at the upper right will be normalized from the reverse state, which indicates that the "OFF-C" state is entered.

(4) To cancel OFF-C function, either select OFF in (2) Up/Down --> ENT --> Up/Down

(Select OFF-C)

|-->(Select ON) ENT --> Left/Right & Up/Down --> ENT Set OFF-C

-->(Select OFF) ENT -----------------------------

Cancel OFF-C Note: VRM2 and EBL2 do not follow the OFF-C function while floating. The function operates only on PPI screen. Move the cross cursor indicates "OFF-C" state is entered

.75

.25 HU

.75

.25 HU OFF-C SET OFF-C POINT 5.5.2.4 Setting of the SLEEP function(SLEEP) This function sends a 30-second-transmissions during pre-fixed hours. After a transmission, a power-saving mode is entered with the screen in ST'BY state (the scanner-OFF 54 state) and the LCD backlight turned off. This action is repeatedly executed. Usage example, set a guard zone and have the warning signal automatically confirmed every prefixed period.

(1) Use the up-down cursor keys to select SLEEP from among the pull-down display items, and press the "ENT" key.

(2) When the OFF/5min/10min/15min display has appeared beside the SLEEP item, select a time to be set with the up-down cursor keys.

(3) Press the "ENT" key and the setting is completed. When the SLEEP function is to be canceled, select OFF in (2). When a transmission is conducted after setting a SLEEP mode, a ST'BY state is entered and the backlight turns off after a 30-second-transmission. (Power-saving mode). Two minutes before the fixed time the backlight turns on and the 2-minute timer starts. Then, at the fixed time another 30-second-transmission begins. This series of actions are repeated. If any one key is pressed during the course of this action, the SLEEP function will be canceled.

(a) Setting procedure Up/Down ENT Up/Down -->Select OFF) ENT

-----------SLEEP function is turned OFF

(Select SLEEP) ENT POWER

-->(Select 5min.) -------------------------------

30-second-transmission every 5 min.

-->(Select 10min.) ENT ------------------------ POWER 30-second-transmission every 10 min.

-->(Select 15min.) ENT ----------------------- POWER 30-second-transmission every 15 min. Transmission Setting completed

Operation

(b) Action after setting SLEEP setting 5min.

(Under Tx

(Under power-saving mode

(Under power-saving mode 2min. timer in use

(Under Tx

0 sec. TX Start 30 sec. TX OFF 3 min. Backlight ON Countdown start 5min. Tx Start 5and a half min. TxOFF

Time used

Action

-- What happens if a key is pressed after a SLEEP mode setting?

If a transmission is conducted and a key is pressed after setting a SLEEP mode, power-

saving mode is entered 30 seconds after key is pressed.

-- What happens if a key is pressed during the SLEEP mode?

a) If a key is pressed during the power-saving mode, the SLEEP function is canceled and the 2-

minute timer starts. 55

b) If a key is pressed while the 2-minute timer is in use, or during transmission , the SLEEP function is canceled. 56

5.5.3 Echo Menu xxx

keys to press Adjustment options to be conducted on the echoes displayed on the screen

Common operations for the ECHO menu (Up to the point when "ECHO" menu is selected from the main menu) Press the "MENU" key and select "ECHO" from the displayed 4 main menus using the left-

right cursor. (The contents of the selected MENU will appear on a pull-down display in accordance with the movement of the left-right cursor.) MENU

Left/Right

(Select ECHO) When the above-mentioned operations have been conducted, the items of the ECHO menu are vertically displayed. Further explanation about the ECHO menu will be conducted on the assumption that this

"common operation for the ECHO menu" has already been completed. 7 5

.2 5 H U L

0.23 NM ECHO AT MARK NAV ECHO SETUP

AUTO

MANU GAIN STC FTC TUNE ST

5.5.3.1 Sensibility adjustment (GAIN)

(1) Use the up-down cursor keys to select GAIN from among the pull-down display items, and press either the "ENT" key or the right cursor key.

(2) Select MANU from the MANU/AUTO display beside the GAIN item using the up-down cursor keys, and press the "ENT" key.

(3) The present state of GAIN is displayed in reverse on the screen left as G 35 and an adjustable state is entered. When the control knob are operated in this state, the figure alternates within a range of 0 and 99 and the GAIN can thus be adjusted.

(4) The adjustment is completed by pressing the "ENT" key after adjustment. When AUTO action is to be entered, select AUTO in (2) and press the "ENT" key to complete the setting. G 56 The setting value is displayed during MANUAL operation. AT is displayed during AUTO operation.

(The same applies to STC, FTC and TUNE.) 56

Up/Down -->

ENT --> Up/Down

(Select GAIN)

|->(Select MANU) --------------------> Control knob --> ENT Set to MANU mode

|->(Select AUTO) ----------------------------------- --> ENT

(GAIN adjustment) Set to AUTO mode 5.5.3.2 Removing sea clutter (STC) Refer to the section, Sensibility adjustment (GAIN). Up/Down --> ENT --> Up/Down

(Select STC)

|->(Select MANU) --> ENT --> Control knob --> ENT Set to MANU mode

|->(Select AUTO) --> ENT -----------------------------------

(STC adjustment) Set to AUTO mode Note: When you select MANU mode, GAIN and FTC will be switched to MANU mode, too. Note: When you select HARBOR mode, FTC will be switched to MANU mode. 5.5.3.3 Removing rain and snow clutter (FTC) Refer to the section, Sensibility adjustment (GAIN). Up/Down --> ENT --> Up/Down

(Select FTC)

|->(Select MANU) --> ENT --> Control knob --> ENT Set to MANU mode

|->(Select AUTO) --> ENT -----------------------------------

(FTC adjustment) Set to AUTO mode 5.5.3.4 Adjusting receiver tuning (TUNE) Refer to the section, Sensibility adjustment (GAIN). Up/Down --> ENT --> Up/Down

(Select TUNE)

|->(Select MANU) --> ENT --> Control knob --> ENT Set to MANU mode

|->(Select AUTO) --> ENT ------------------------------------

(TUNE adjustment) Set to AUTO mode 35 57 Indicated setting value on manual mode, 5.5.3.5 Echo expansion (ST) Expanding the echo to the direction of the distance. Two types of echo expansion exist, select ST1 or ST2 from the menu.

(1) Use the up-down cursor keys to select ST from among the pull-down display items, and press the "ENT" key.

(2) Select ST1 or ST2 from the display beside the ST item using the up-down cursor keys, and press the "ENT" key. Up/Down -->

ENT

Up/Down

select ST1 ............... --> ENT set ST1 set ST2 ST OFF

.75

.25 HU

select ST2 ............... |-> ENT

select OFF ............... |-> ENT

( expansion rate ST1<ST2 )

.75

.25 HU ST1

ST function is OFF ST1, or ST2 display, no display on OFF state The picture to display echoes expanded in the direction of the distance 5.5.3.6 Displaying locus of target (TRACK)

(1) Use the up-down cursor keys to select TRACK from among the pull-down display items, and press the "ENT" key.

(2) Select 15SEC, 30SEC, 1MIN, 3MIN, 6MIN, or CONT from the display beside the TRACK item using the up-down cursor keys, and press the "ENT" key.

"TRK 15S" is displayed on the left side of the screen and track mode is entered. 15S indicates the length of the track, and displays a maximum of 15-second-long sailing track. 58 Note: When PPI+PPI or ALL PPI+PPI screen mode is used, TRACK function can be used only on CONT mode. real echo locus of target

.75

.25 HU moving direction disappear after selecting time TK 15SEC

the length of the track up/down

ENT

up/down ........... ->

select OFF

-> ENT TRACK OFF set 15sec. track set 30sec. track set 1 min. track set 3 min. track set 6 min. track

select 15SEC ......................... -> ENT

select 30SEC ......................... -> ENT

|---->select 1MIN ........................... -> ENT

|---->select 3MIN ........................... -> ENT

select 6MIN .......................... -> ENT

select CONT .......................... -> ENT set continue track 5.5.3.7 Enlarging selected areas (ZOOM) The video image centering around the cross cursor is doubled as it is displayed on the screen.

(1) Use the up-down cursor keys to select ZOOM from among the pull-down display items, and press the "ENT" key.

(2) Select the ON using up-down cursor keys from the ON/OFF display beside the ZOOM item, and press the "ENT" key.

(3) A small cross cursor for setting and "SET ZOOM POINT" are displayed at the screen center and at the bottom respectively, and the magnification point is to be set. Use cursor keys to move the cross cursor to the point to be magnified, press the "ENT" key and the setting is completed. The area around the cross cursor is displayed in 2x magnification, with blinking

"ZOOM" displayed at the screen upper right, indicating that a ZOOM display is being conducted. To cancel the ZOOM function, either select OFF in (1) or begin operation of range. 59 Up/Down --> ENT --> Up/Down (Select ON) --> ENT --> Up/Down & Left/Right --> ENT ZOOM Setting

(Select ZOOM)

ZOOM canceled

(Move cross cursor)

(Select OFF) --> ENT ----------------

Note 1) VRM2 and EBL2 do not follow the ZOOM function during a floating state. Note 2) Normal screen returns when you change the range scale. Note 3) ZOOM function is usable only in PPI screen. Note 4) ZOOM function is unusable in OFF-C. Note 5) Center of ZOOM can be set any desired position within the set range. 75

.25 HU blinking "ZOOM"

.75

.25 HU ZOOM SET ZOOM POINT 5.5.3.8 Increasing sensitivity (S/L) The pulse width is automatically changed as you change the range. However, if you want to increase sensitivity, you can choose sensitivity from two pulse widths. The short pulse

(SHORT) gives you sharp images with high distance resolution. The long pulse (LONG) provides high sensitivity and shows targets in large size for easy identification although distance resolution is reduced.

(1) Use the up-down cursor keys to select S/L from among the pull-down display items, and press the "ENT" key. indicated S or

(2) Select Pulse length(SHORT or LONG) using the up-

down cursor keys from the SHORT/LONG display beside the S/L item

(3) The setting will be completed when the ENT key is

.75

.25 HU S pressed after the selection.

Up/Down --> ENT

-->(Select SHORT) -------------------- -->

ENT Set to short pulse

|-->(Select LONG)-->

ENT -------------- Set to long pulse 60

5.5.4.5.2 Changing the content of settings 1(PRESET1)

(1) When PRESET1 is selected from CUSTOM items and the "ENT" key is pressed, the

(2) items with up-down keys and contents with PRESET1 screen (See chart below) appears. left-right keys. Select The selected items will be enclosed by square frames and the contents will appear in reversed

(a) Repeat this operation when multiple settings are to be made. display. a) Heading Flash b) Stern Mark c) North Mark d) ST'BY screen e) Buzzer Volume f) VRM Unit g) Water temperature h) Depth Unit i) EBL Mode j) WayPoint Mode k) Heading Input l) Heading Type m) Cursor position n) TX Pulse

(b) HM FLASH STERN M NORTH M STBY BUZ VOL RM UNIT TEMP DEPTH EBL BRG WP BRG PRESET1 ON _OFF_ ON _OFF_ ON _OFF_ _NAVI_ NOR OFF LOW _HIGH_ _NM_ KM C_ e SM _M_ FT FM _REL_ TRUE MAG _TRUE_ MAG HEAD INPUT HEAD _NMEA_ SIN/COS 12BIT 10BIT TRUE _MAG_

(a)

+MK MODE P TABLE P TABLE _1_ _DIST / BRG_ LAT / LON 0 _1_ 2 SHORT LONG

.5 0 0

.75 0 1 1.5 0 1 3 1 2 6 1 2

(3) After the setting is completed, exit from the PRESET1 screen with the "ENT" key. Note) The contents will be displayed in (b) together with the numbers selected in P TABLE. Heading Flash Each revolution of the antenna turns the heading marker on b) Stern Mark c) North Mark ST'BY screen e) Buzzer Volume and off. Display/non-display of the stern line Display/non-display of the north mark Setting display NAVI:

NOR: Normal screen Setting the volume of the buzzer screen Navigation the Data in stand-by screen 71

VRM Unit g) Water temperature VRM unit Heading Marker

.75

.25 HU Nautical mile Kilometer Setting

NM:

KM:

SM: Statute mile Setting water temperature unit C: Celsius F: Fahrenheit h) Depth Unit Setting Depth unit Stern Marker M:

FT:

FM: Fathom i) EBL Mode j) WayPoint Mode Mode Relative Setting REL:

TRUE:

MAG: Magnetic bearing WayPoint Setting of bearing from True bearing k) Heading Source Setting Heading TRUE:

MAG: Magnetic bearing True Meter Feet EBL HM bearing mode bearing source;

NMEA SIN/COS: Compass Data with SIN/COS signal 12BIT: Compass Data with 12bits serial signal 10BIT: Compass Data with 10bits serial signal l) Heading Type Heading MAG:

TRUE: True bearing Information Type Magnetic m) Cross cursor position Range display Bearing DIST/BRG:

LAT/LON: Latitude and Longitude indication and setting bearing Mode indication n) Transmitting pulse width Pulse setting for Range (Note: ) Note: P TABLE PUSLE TYPE

0.25 NM P TABLE 0 SHORT LONG P TABLE 1 SHORT LONG P TABLE 2 SHORT LONG 0 0 0 0 0 0 0.5 0.75 NM NM 0 0 0 0 0 0 0 1 0 1 0 1 1.5 NM 3 NM 6 NM

12 NM 0 1 0 1 1 2 0 1 1 2 1 2 1 2 1 2 1 2 2 2 2 2 2 2 Note RA40C Pulse width 0 : 0.12 uS, 1 : 0.3 uS, 2 : 0.8 uS 41/42 0 : 0.08 uS, 1 : 0.25 uS, 2 : 0.8 uS 72

73

5.5.4.5.3 Changing the content of settings 2 (PRESET2) Refer to the section, Changing the content of setting 1(PRESET1). a) Guard Zone Level b) Guard Zone Mode c) Hold d) Display Unit Mode e) External Buzzer j Bearing pulse/rot(IN) g) Bearing pulse/rot(OUT) h) Built-in Simulator i) Interference Rejection j) Ship's Speed k) Indication Language l) Scan speed GZ LVL GZ MODE HOLD DISPLAY EXT BUZ IN P /R OUT P/R DEMO IR SPD SET LANGUAGE

(a) PRESET2 1 2 3 4 5 6 7 I N OUT ON OFF RDR MONI NAVI OFF 1080 1080 CONT INT 1024 1024 2048 2048 ON OFF OFF IR1 IR2 NMEA MANU 0.0KT 4096 4096 360 360 CHI GRE POR DAN ITA RUS ENG JPN SPA FRE KOR SWE GER NOR TUR SCAN SPEED STD HIGH PRESS ENTER KEY TO RETURN a) Guard Zone Level Guard Zone Detection Level setting 1: High Sensitivity, .. 7: Big Target Only b) Guard Zone Mode c) Hold d) Display Unit Mode e) External Buzzer Zone Guard IN:

OUT: Detect Target dissapear Detect Detection Mode Target setting in Hold the radar picture for 30 seconds after switch to ST'BY The EBL and VRM can be used in HOLD state.(Note1: ) Display Mode Unit Operation Radar RDR:

MONI: Monitor mode(for NAV: Navigation mode(for DATA indicator use) slave setting mode(normal) display use) Buzzer External OFF:

CONT:

INT: Intermittent tone control Buzzer Continuous setting off tone f) Bearing pulse/rot.(IN) Change the setting when connected to the other type of radar g) Bearing pulse/rot.(OUT) Change the setting when connected to the other type of h) Built-in simulator i) Interference Rejection radar switch for Demonstration Reject the interference the other from IR ON ON level level radar OFF 1 2 OFF:

IR1:

IR2:

73 j) Ship's Speed Own ship's speed setting NMEA:

MANU:

Data Set input ship's from speed NMEA with port manual Set the Speed with control knob. k) Indication Language l) Scan Speed Select the language for MENU and SOFT KEY( Note2: ) Scanning speed setting STD: Standard HIGH: High speed

( The setting can be changed only on stand-by state.

) Note1: HOLD function POWER POWER key to press HOLD is function which you want to hold the currently displayed radar screen conditions while standby state. After finished operation such as EBL, VRM about 30 seconds, the screen return to standby screen. Setting HOLD POWER

Operation

Under Tx

-----------------------------------<-------Under HOLD mode---><-----------ST BY DISPLAY Turn to transmission off

Time used EBL,VRM operation: seconds

30seconds NOTE) EBL and VRM function is usable in HOLD state. HOLD is displayed and blinks. HOLD Setting HOLD Tx OFF X 30sec. STBY Note 2: 15 languages CHI

: Chinese DAN : Danish ENG : English FRE : French GER : German GRE : Greek ITA : Italian JPN : Japanese EBLs and VRMs can be used for measuring target data. KOR : Korean NOR : Norwegian POR : Portuguese RUS : Russian SPA : Spanish SWE : Swedish TUR : Turkish 74

5.5.4.5.4 Changing the content of settings (ADJUST) The items in the ADJUST menu are ones that need adjustment at the time of installation. The settings need not normally be altered.

(1) Adjusting distance (TIMING ADJ) This adjustment is necessary to adjust the distance on the radar screen to the actual distance.

(1) In preparation for adjusting the distance, the following adjustments are to be conducted. First, set the radar range to 0.25 NM, FTC to minimum, and GAIN to optimum. Then adjust STC until the pulse generated by your own radar appearing at the center of the screen is clearly recognized as a round dot.

(2) Adjusting the distance.

(2)-1 Select ADJUST by "common operations for CUSTOM", use up-down cursor keys to select TIMING ADJ from among the pull-down display items and press the "ENT" key.

(2)-2 As the distance adjustment screen is displayed, adjust timing until the center dot looks as (b) with the control knob. If there is a linear target such as a bridge or breakwater, adjust timing until the target appears straight in the screen.

(2)-3 When the adjustment is finished, press the "ENT" key to exit from the distance adjustment screen. Up/Down ENT Control knob ENT select TIMIG ADJ

Timing adjustment finished a) Too far b) Correct c) Too shrunk

(2) Adjusting angle (HEAD ADJ) This adjustment is necessary to adjust the head direction on the screen to the actual direction of the ship. Note: Heading offset value for open antenna is different from that for a radome antenna.

(1) In preparation for adjusting the angle, the following adjustments are to be conducted.

(1)-1 Find one small target within a 0.5 to 1.5 NM range which, lying in the bow direction, can be detected with eyes and is clearly visible in the radar screen.

(1)-2 Measure the bearing of this target from the bow direction using a compass. Let it be c.

(1)-3 Measure the bearing of the above target in head up (HU) mode using EBL. Let it be r.

(1)-4 Calculate the greater following:

r than

c - r

if c is 75 360 - ( r - c )

c This is the azimuth error of your radar at installation. If c and r are equal, the adjustment described below is unnecessary. greater than if r is

(2) Adjustment method

(2)-1 Select ADJUST by "common operations for CUSTOM", use the up-down cursor keys to select HEAD ADJ from among the pull-down display items and press the "ENT"

key.

(2)-2 As the distance adjustment screen is displayed, set the value to the azimuth error you have calculated above with the control knob.

(2)-3 When the adjustment is finished, press the "ENT" key to exit from the distance adjustment screen. Up/Down ENT Control knob ENT Select HEAD ADJ. 3 1 HU Set a value to . HEAD DIRECTION ADJUSTMENT ADJUST WITH CONTROL KNOB PRESS ENTER KEY TO RETURN _358.8_ HEADING Adjustment

(3) Adjusting tuning circuit (TUNING CAL) Normally you do not need to make this adjustment. This adjustment may necessary to ensure that the automatic tuning circuit operate at its best operating point. However, if sensitivity is poor or there is any symptom suggesting improper tuning, you may need to adjust this circuit following the procedure below.

(1) Choose several stable video images in the 3 NM range or more.

(2) Select ADJUST by "common operations for CUSTOM", use the up-down cursor keys to select TUNING CAL. from among the pull-down display items and press the "ENT" key.

(3) As the tuning circuit adjustment screen(TUNING CALIBRATION) is displayed, select AUTO with up-down cursor key.

(4) While watching video images, adjust until echoes are clearly visible with the control knob.

(5) Select MANUAL with the down cursor key. 76

(6) Adjust until echoes are clearly visible with the control knob. This set status is middle value of manual tuning.

(7) When the adjustment is finished, press the "ENT" key to exit from the TUNING CALIBRATION screen. Operate of (3) to (7) Up/Down Select AUTO Control knob Adjust tuning 3 1 HU Echo remain. Up/Down Select MANU Control knob Adjust tuning ENT Adjust with control knob Select with up-down cursor key TUNING CALIBR ATION READ OPER ATION MANUAL SELECT ITEM WITH KEY TUNE WITH CONTROL KNOB PRESS ENTER KEY TO MEMORY AUTO MANUAL

(4) Adjusting antenna height (ANTENNA) Depending on the position at which the antenna is installed, it may be necessary to make the following correction. (Consult distributor for details.)

(1) Select ADJUST by "common operations for CUSTOM", use the up-down cursor keys to select ANTENNA from among the pull-down display items and press the "ENT" key.

(2) As the adjustment screen is displayed, using the control knob to choose your desired value from 1 to 9.

(3) Press the "ENT" key to exit from the adjusting antenna height screen. Up/Down ENT Control knob ENT Select ANTENNA Choose value Complete 3 1 HU Adjust with Control knob STC CURVE ADJUSTMENT ADJUST WITH CONTROL KNOB PRESS ENTER KEY TO MEMORY STC CURVE _5_ ANTENNA Adjustment 77

(5) Setting GAIN circuit (GAIN) Here, you set the automatic and manual gain level. Normally, adjust this setting to be slight the noise echo appears on the screen. When enter this setting at AUTO mode, you can preset AUTO GAIN level. When enter at MANUAL mode, you can preset the MANUAL GAIN to current MANUAL gain level as the standard. When you enter the setting at "G60" of gain level, for instance, gain level of "G60" is preset as the standard level.

(1) Select ADJUST by "common operations for CUSTOM", use the up-down cursor keys to select GAIN from among the pull-down display items and press the "ENT" key.

(2) As the adjustment screen is displayed, using the control knob to choose your desired value from 1 to 30.

(3) Press the "ENT" key to exit from the adjustment screen. Up/Down ENT Control knob ENT Select GAIN Choose value Complete

(6) Setting STC circuit (STC) Here, you set the STC level. Adjust this setting to be slight sea clutter appears on the screen, when you observe a small target (ex. Small buoy). When enter this setting at AUTO mode, you can preset AUTO STC level and AUTO FTC level. When enter at HARBOR (HBR) mode, you can preset HARBOR STC level. When enter at MANUAL mode, you can preset MANUAL STC level as the standard level.

(1) Select ADJUST by "common operations for CUSTOM", use the up-down cursor keys to select STC from among the pull-down display items and press the "ENT" key.

(2) As the adjustment screen is displayed, using the control knob to choose your desired value from 1 to 16.

(3) Press the "ENT" key to exit from the adjustment screen. ENT Up/Down Control knob ENT Select STC Choose value Complete 78

5.5.4.5 Changing the content of the setting (CUSTOM) Note) Items in CUSTOM are for conducting settings and adjustments at the time of installation, which need not be conducted normally.

-Common operations for CUSTOM Use the up-down cursor keys to select CUSTOM after the common operations for the SETUP menu, and press either the "ENT" key. MENU Left/Right Up/Down ENT

(Select SETUP)

(Select CUSTOM) Common operation for SETUP When the above operations have been conducted, 4 items, namely "KEY ASSIGN", "PRESET1",

"PRESET2" and "ADJUST", are displayed beside the CUSTOM item. Further explanation concerning the CUSTOM menu items will be done on the assumption that the above "common operations for CUSTOM" have already been conducted. A T ECHO SETUP

WINDOW

SEL WIN

PICTURE SYSTEM CHECK

CUSTOM SETUP SETUP NAV

.75

.25 HU S k

0.23NM KEY ASSIGN PRESET1 PRESET2 NMEA PRESET ADJUST >

68 5.5.4.5.1 Changing the settings of soft keys (KEY ASSIGN) Conducting alterations and new settings for the functions of keys with number displays of 1-7.

(1) Screen display for the setting When KEY ASSIGN has been selected with the up-down cursor keys from among the CUSTOM items and the "ENT" key is pressed, the setting screen is displayed. (See chart below) MARK NAV ECHO SETUP

@EBL1

@VRM1

@EBL2

@VRM2

@FL EBL2

@FL VRM2

@HDG OFF

@///CSR

@RINGS

@VAR RNG

@TARGET

@+MK LINE

@MODE

@GZ

@OFF-C

@SLEEP

@TUNE

@ST

@TRACK

@ZOOM

@S ^L

@SEL WIN

@PICTURE

@PPI

@PPI/3D

@PPI/PPI

@PPI/NAV

@ALL PPI

@ALL PPI2

@NEXT KEY ASSIGNMENT EBL1 VRM1 EBL2 VRM2 RINGS PPI TUNE PPI/3D VAR RNG FL EBL2 ST PPI/PPI TRACK FL VRM2 ZOOM PPI/NAV TARGET GZ SLEEP ALL PPI SEL WIN OFF-C PICTURE ALL PPI2 NEXT NEXT NEXT NEXT 1 2 3 4 5 6 7 SET1 SET2 SET3 SET4 Move with up-down cursor Key Groups Move with right-left cursor Mark is displayed when the function is set to a key. Operation panel Keys 1 - 7 Soft Key Setting Screen

(2) Selecting functions Reverse the items to be set using the up-down cursor keys. (The items become reverse in accordance with the moving cursor.)

(3) Key settings

(3)-1 Making new settings (Example 1) For allocating the selected item to a soft key, press the key to be allocated. The selected item will be displayed beside the key, which indicates that the setting has been conducted.

(3)-2 Changing the function of a key with an preset function (Example 2) When the allocated key is pressed, its function will be altered to the one selected in (1) above and the previous function will be canceled. The current settings for SET1-4 will be displayed below NEXT. In order to switch the settings SET1-4, use the right-left cursor keys. (Double settings (setting 1 item for more 69 than 1 key) are possible.) When settings are to be conducted for more than 1 key, repeat the operations (3)-1 to (3)-2.

(Example 3)

(4) Completing the setting After the setting has been finished, press the ENT key to exit from KEY ASSIGNMENT. Example of an operation

(The process up to the selection of KEY ASSIGNMENT from the SETUP menu is omitted. Only the process after the above chart will be described.) Example 1) Altering OFF-C allocated to key 6 in setting 2 to HDG OFF. Up/Down Select HDG OFF 6 ENT ----------------------------Key 6 altered from The display beside key 6 changes to HDG OFF Exit from KEY ASSIGNMENT OFF-C to HDG OFF Example 2) Re-allocate SEL WIN to key 1 in setting 2. Left/Right Up/Down 1 ENT -------------------Key 1 in setting 2 select SEL WIN SEL WIN is displayed Exit from beside key 1. KEY ASSIGNMENT is altered to SEL WIN From SET1 to SET2 Example 3) Alter key 1 in setting 1 from ST to HDG OFF and then reset key 1 in setting 2 as SEL WIN. Up/Down Select HDG OFF 6 The display beside key 6 changes to HDG OFF

Key 6 altered from ST to HDG OFF Left/Right Up/Down 1 ENT ----------------------------Key Select SEL WIN SEL WIN is displayed beside key 1. Exit from KEY ASSIGNMENT is altered to SEL WIN From SET1 to SET2 70

5.5.4 SETUP Menu To be used for various settings and switching of the screen

Common operations for the SETUP menu (Up to the point when "SETUP" menu is selected from the main menu) Press the "MENU" key and select "SETUP" from the displayed 4 main menus using the left-

right cursor. (The contents of the selected MENU will appear on a pull-down display in accordance with the movement of the left-right cursor.) MENU

Left/Right

(Select SETUP) When the above-mentioned operations have been conducted, the items of the SETUP menu are vertically displayed. Further explanation about the SETUP menu will be conducted on the assumption that this "common operation for the SETUP menu" has already been completed. 5.5.4.1 Initiating the screen display (WINDOW) A function to switch the display method of the screen. A selection can be made from among the 7 patterns of screen arrangements, from the ordinary PPI display to the 2-screen PPI display, etc. a) PPI screen b) PPI screen & SEMI3D screen c) PPI screen & PPI screen (Range can be operate in each screen.) d) PPI screen & Navigation screen e) All PPI screen (PPI, all the screen display.) f) All PPI screen & All PPI screen(PPI & PPI, all the screen display.) g) MOB screen

(1) Use the up-down cursor keys to select WINDOW from among the pull-down display items, and press the "ENT" key.

(2) Select a screen to be displayed with the up-down cursor keys from among the above 7 items that are displayed beside the WINDOW item.

(3) The setting will be completed when the "ENT" key is pressed after the selection. 75

.25 HU

0.23NM SETUP MARK NAV ECHO SEMI3D / PPI PPI / PPI PPI / NAV ALL PPI ALL PPI/PPI MOB 61 A SETUP WINDOW

SEL WIN PICTURE

SYSTEM CHECK

CUSTOM

Up/Down ENT Up/Down

(Select PPI ENT a

select WINDOW ENT

b

(Select PPI+SEMI3D

(Select PPI+PPI

(Select PPI+NAV

(Select ALL PPI

(Select ALL PPI+PPI ENT c ENT d ENT e ENT

f

(Select MOB ENT g

-Limitation of screen operation SCREEN PPI/SEMI3D PPI PPI ALL PPI ALL PPI PPI MOB ITEM RANGE VRM1 EBL1 VRM2 EBL2 FL VRM2 EBL2 RINGS ON/OFF ZOOM OFF CENT

///CSR HDG OFF STERN M NORTH M GAIN STC FTC TUNE ST GZ SEL WIN TXON/OFF PPI/NAV

Independent control at time as two screen. Switching the screen is necessary (SEL WIN) It becomes simultaneous control at the time as two screen. It can be used only at the time of PPI screen. It cant be used.

- Screen modes and Operations 62

(a) PPI Screen All functions can be used on this screen. D V T DQT g t

PPI Screen 63

(b) PPI/SEMI3D Screen It becomes simultaneous control at the time as two screen. Note: All controls, such as EBLs, VRMs effects both screen. The ZOOM, OFF-C, FL EBL2, and FL VRM2 could not be used on this mode. The "SEMI3D" screen displays the center as ship's heading always. D V T DQT g t r

280 320 000 040 080 PPI/SEM I3D Screen

(c) PPI/PPI Screen The radar picture is refreshed two antenna scanning for each PPI screen. Un-

refreshed screen picture is holded during the time. LEFT screen picture drawing(refreshed)

RIGHT screen

t displayed previous picture ( hold) Note: The radar picture is refreshed with two scanning interval for each screen. Right screen picture is holded during refreshing left screen, left screen holded during refreshing right screen. When your ship navigates in high speed, use PPI screen to get fast refreshing picture. Note: Functions ZOOM, OFF-C, FL-EBL2, and FL-VRM2 can not be used on this screen. Note: The function RANGE, GAIN, STC, FTC, and GZ can be used for each screen independently. The screen selected in "SEL WIN" that the range indicator displayed in reverse can be controlled. Note: The cross cursor displayed only on selected screen. 75 . 25 HU S 24 6

.75 . 25 HU S 24 6

G 55/35 S 35/AT F 35/AT G 55/35 S 35/AT F 35/AT LEFT screen selected GAIN adjustm ent for LEFT screen Left GAIN indicates in reverse

-Operation a) Changing RANGE of LEFT screen 1) When the RIGHT range indicator displayed in reverse, change to LEFT screen with

"SEL WIN" function. 2) Press RANGE UP or RANGE DOWN key to change the LEFT screen RANGE. 64 b) Adjusting GAIN of LEFT screen. 1) When the RIGHT range indicator displayed in reverse, change to LEFT screen with

"SEL WIN" function. 2) Press the "GAIN" key, "G50" will displayed in reverse and ready for adjusting GAIN. 3) Adjust GAIN with the control knob. Adjust STC and FTC in a same manner as GAIN. Note: During adjustment of GAIN, STC, or FTC, radar picture refreshing is fixed to the adjusting screen. Approximately 5 seconds errapsed after adjustment, radar picture refreshing is return to normal. 6 1 c) Determining the distance with VRM1 on LEFT screen. 75 .25 HU S 1) When the RIGHT range indicator is displayed in reverse, change to LEFT screen with "SEL WIN"

function. 1 0.00NM 2) Press the "VRM1" key, " " will be displayed in reverse and ready for adjusting VRM1. 3) Determining the distance with the control knob.

1 0.00N M G 55/35 S 35/AT F 35/AT Note: If operate the VRM1 on the RIGHT screen, VRM1 will move to the RIGHT screen. Determining the distance with VRM1 on LEFT screen Operate VRM2, EBL1, or EBL2 in a same manner as VRM1.

(d) PPI/NAV Screen Note: The ZOOM, OFF-C, FL EBL2, and FL VRM2 can not be used on this screen. D V T DQT g t r

NAV DISPLAY 2.38NM WAY P 123.4 6.8 m l COURSE XTE <<<

HDG SPD TEMP DEPTH 58.3M LAT/LON 34 08 D22N 138 02 D53E 267.3 T 12.8KT 20.8 C

(e) ALL PPI Screen Note1: The RANGE, RINGS interval, and Display mode are displayed on the upper-left of the screen. Note2: When press the key except "MENU", "RANGE UP/DOWN", "BRILL", and "POWER", return to PPI screen. PPI/NAV screen

. 75

. 25 HU S

ALL PPI screen 65

(f) ALL PPI/PPI Screen Note1: The RANGE, RINGS interval, and Display mode are displayed on the top of the screen. Note2: When press the key except "MENU", "RANGE UP/DOWN", "BRILL", and "POWER", return to PPI/PPI screen. Note3: The radar picture is refreshed with two scanning interval for each screen. Right screen picture is holded during refreshing left screen, left screen holded during refreshing right screen. When your ship navigates in high speed, use PPI screen to get fast refreshing picture. D V T DQT g t r D Q T DPQT

ALL PPI PPI screen

(g) MOB Screen MAN OVERBOARD The MOB key has been pressed, the MOB position and ship's position are displayed. If not, MOB position will be displayed with bars( --.- ) Press MOB key to clear the MOB position and return to previous screen. Press ENT key to return previous screen with keeping the MOB position data. MOB POS SHIPS POS 35 08 D42N 139 03 D33E 37 12 D42N 142 04 D33E PRESS MOB KEY TO DATA CLEAR PRESS ENTER KEY TO RETURN 5.5.4.2 Switching screens on PPI/PPI screen ( SEL WIN ) Switching to the desired screen for activation on a PPI/PPI screen display. The "SEL WIN" function is switches the activated screen to effect the operation such as, RANGE, GAIN, STC, FTC, VRM1/2, EBL1/2, and guard zone. The range indicator of activated screen is displayed in reverse. When "SEL WIN" is selected with the up-down cursor keys from among the pull- down display items and the "ENT" key is pressed, activated screen will be changed to the opposite screen. Up/Down

select SEL WIN

......................................................the opposite screen activated Range display on the active screen become a reverse display

.75 .25 S

.5 .25

.75 .25 HU S

.5 .25 . 66

5.5.4.3 Changing the color of screen (PICTURE) Changing the color of screen depending on weather and day / night environment conditions will be effective for easy viewing . When "PICTURE" is selected with the up-down cursor keys from among the pull- down display items, select "DAY" and press "ENT" key to set to day display. Night display appears if

"NIGHT"

is selected Up/Down ENT Up/Down

select PICTURE

(select DAY

(select NIGHT ENT day display ENT night display

. 75

. 25 HU 75

. 25 HU DAY display NIGHT display 5.5.4.4 Fault Diagnosis by Self Check SYSTEM CHECK) Verifying the problem point by SYSTEM CHECK when, for example, some abnormality has occurred.

(1) Select SYSTEM CHECK from the pull-down display items using up-down cursor key, and press the ENT key.

(2) The system check screen will appear. While watching the screen , check the following:

i) Whether all items are marked OK. (If any item is marked NG, the indicated location may be faulty.) ii) Press a front-panel key and see if the corresponding display on the screen is highlighted. iii) Turn the control knob and see if the lower-right indicator move to right or left.

(3) Press the POWER key to return to the previous screen 67 SYSTEM CHECK MEMORY CHECK MENU ENT a) ROM --------------------------------------- > ROM b) RAM---------------------------------------- > RAM c) Backup memory----------------------- > BACKUP SIGNAL CHECK d) Transmit trigger ----------------------- > (1) TRIGGER e) Bearing pulse -------------------------- > (2) AZIMUTH f) Heading pulse -------------------------- > (3) HM g) +5Vvoltage(at video circuit)------ > (4) +5V h) High voltage(at scanner) ---------- > (5) H.T. AT SU i) High voltage(at display) ------------- > (6) H.T. AT DU j) Magnetron current--------------------- > (7) MAG. CUR. k) Tuning voltage ------------------------- > (8) TUNE OK OK OK OK OK OK OK 5.2V OK 253.2V OK 253.2V OK 2.1 OK Indicates the cursor status. 1 2 3 4 5 6 7 RNG U RNG D BRILL AUTO GAIN STC FTC l) Cumulative usage time-----------> HOURMETER Operation time --------------------- > OPERATE Transmit time ---------------------- > TRANSMIT m) ROM version -----------------------> ROM VERSION 12.0H 10.3H V1.00 POWER MOB CO NTROL KNO B PR ESS POW ER KEY TO RETUR N SYSTEM CHECK screen n)Indicates the operation status of front-panel key Indicates the control knob status. a) ROM----------------------------- Indicates the ROM status. b) RAM -------------------------------- Indicates the RAM status. Backup memory-------------- Indicates the backup memory status. Transmit trigger ------------- Indicates the signal line status for the trigger signal sent from the scanner unit. e Bearing pulse------------------ Indicates the signal line status for the bearing signal sent fron the scanner f) Heading pulse------------------- Indicates the signal line status for the bow signal sent from the scanner unit. g) +5V voltage---------------------- Indicates the reference voltage status of the video circuit and its voltage unit.

(at video circuit) h) High voltage(at SU)---------- Indicates the status of th high voltage supplied from the display unit to the value.

(normally about 5 V) i) High voltage(at DU) ---------- Indicates the status of th high voltage supplied from the display unit to the scanner unit and its voltag value (normally about 250 V) at scanner unit. j) Magnetron current ---------- Indicates the status of the anode current flowing in the magnetron and its scanner unit and its voltag value (normally about 250 V) at display unit. current value. k) Tuning voltage -------------- Indicates the status of the voltage used for tunning and its voltage value. l) Cumulative usage time ---- Indicates the cumulative time your radar is used. OPERATE TRANSMIT

: Duration of time during which the power supply is turned on.

: Duration of time transmitting. m) ROM version ---------------- Indicates the ROM software version. n) Front-panel keys------------ As you press any front-panel key when the SYSTEM CHECK screen is on, the corresponding key is highlighted on the screen by displaying it in reverse video. 68

5.5 MENU Operation List of MENU List of Main Menu MARK

(MAIN-MENU) NAV

(MAIN-MENU) ECHO

(MAIN-MENU) EBL1 ON/OFF MODE HU/HS/NU/CU/TM

MANU/NMEA ON/OFF GZ OFF-C ON/OFF SLEEP OFF/5min/10min/

15min ON/OFF VRM1 ON/OFF EBL2 VRM2 ON/OFF FL EBL2 ON/OFF FL VRM2 ON/OFF HDG OFF

///CSR RINGS ON/OFF ON/OFF OFF GAIN AUTO/MAN AUTO/MAN/HARBOR AUTO/MAN AUTO/MAN OFF/ST1/ST2 STC FTC TUNE ST TRACK OFF/15SEC/30SEC/

1MIN/3MIN/6MIN/

CONT ZOOM SL ON/OFF SHORT/LONG SETUP

(MAIN-MENU) WINDOW PPI/SEMI3D+PPI/

PPI+PPI/PPI+NAV/

ALLPPI/ALL PPI+PPI/MOB SEL WIN PICTURE DAY/NIGHT SYSTEM CHECK CUSTO M KEY ASSIGNMENT PRESET1 (SUB-MENU) PRESET2 (SUB-MENU) ADJUST (SUB-MENU) VAR RNG TARGET

+MK LINE ON/OFF ON/OFF List of Custom Menu PRESET1 (SUB-MENU) PRESET2 (SUB-MENU) HM FLSH STERN M NORTH M STBY BUZ VOL RM UNIT DEPTH TEMP EBL BRG WP BRG HEAD INPUT HEAD

+MK MODE P TABLE ON/OFF ON/OFF ON/OFF NAVI/NOR OFF/LOW/HIGH NM / KM / SM M / FT / FM C / F REL / TRUE / MAG TRUE / MAG NMEA / SIN COS /12BIT / 10BIT TRUE / MAG DIST/BRG 0 - 2

/ LAT/LON GZ LEVEL GZ MODE HOLD DISPLAY EXT BUZ IN P/R OUT P/R DEMO IR SPD SET LANGUAGE SCAN SPEED 1-7 IN/OUT ON/OFF RDR/MONI/NAV OFF / CONT / INT 1080/1024/2048/4096/360 1080/1024/2048/4096/360 ON / OFF OFF / IR1 / IR2 NMEA / MANU 0.0 KT 15 countries STD / HIGH ADJUST (SUB-MENU) TIMING ADJ HEAD ADJ TUNING CAL. ANTENNA GAIN STC 1-9 1-30 1-16

.75

. 25 HU ECHO MARK NAV ECHO SETUP GAIN > MAN AUTO

STC FTC STBY TUNE ST TRACK ZOOM S/L

SUB-MENU MAIN-MENU 45 5.5.1 Mark Menu xxx keys to press Setting for markers and cursors

Common operations for the MARK menu

(Up to the point when "MARK" menu is selected from the main menu) Press the "MENU" key and select "MARK" from the displayed 4 main menus using the left-

right cursor. (The contents of the selected MENU will appear on a pull-down display in accordance with the movement of the left-right cursor.) MENU Left/Right

(Select MARK) Further explanation about the MARK menu will be conducted on the assumption that this

"common operation for the MARK menu" has already been completed. 5.5.1.1 Bearing measurement (EBL1)

(1) Select EBL1 from the pull-down display items using the up-down cursor key, and press the

"ENT" key.

(2) When the ON/OFF sign is displayed beside the EBL1 item, select ON with the up-down cursor keys and press the "ENT" key. 75

.25 HU

0.23NM MARK A MARK NAV ECHO SETUP EBL1 VRM1 EBL1

ON OFF

(3) When the "ENT" key is pressed, electric bearing line

(EBL1) appears and the angle from the direction of the ships head which is set at 0 degree will appear in a reverse display at the lower left of the screen.

(4) Place the marker on the center of the target with the control knob and read the bearing. Then, the display setting for EBL1 will be completed either

(a)with the EBL1 display still on the screen if the

"ENT" key is pressed, or (b)without the EBL1 display if the "MENU" key is pressed. (c)Pressing another function key will lead to the function of that key with the EBL1 display still on the screen. Note: 1 xxx xindicates EBL1. 75

.25 HU 1 0.0

Up/Down ENT Up/Down ENT

(Select EBL1)

(Select ON)

(EBL1 operation) Control knob ENT

> MENU

> Other function key

(a)

(b)

(c) Note: The displayed EBL angle is relative to heading or true to north, depends on the setting of "EBL BRG" in the "SETUP" menu. 46

.75

.25 HU 1 0.00NM

5.5.1.2 Determining the distance (VRM1)

(1) Select VRM1 from the pull-down display items using the up-down cursor key, and press either the "ENT"

key.

(2) When the ON/OFF sign is displayed beside the VRM1 item, select ON with the up-down cursor keys and press the "ENT" key.

(3) When the "ENT" key is pressed, the variable range marker1 (VRM1) and the distance in a reverse display appears at the lower left of the screen (See Note), and the display is set for VRM1.

(4) Place the marker on the front edge of the target with the control knob and read the distance. Then, the display setting for VRM1 will be completed either

(a)with the VRM1 display still on the screen if the

"ENT" key is pressed, or (b)without the VRM1 display if the "MENU" key is pressed. (c)Pressing another function key will lead to the function of that key with the VRM1 display still on the screen. Up/Down ENT Up/Down ENT Control knob

(a)

(Select VRM1) MENU

(b)

(c) Note: 1 xx.xx NM indicates VRM1. ENT

(Select ON) (VRM1 operation)

> Other function key 5.5.1.3 Bearing measurement (EBL2) Refer to the section Bearing measurement (EBL1). The "EBL2" will appear in a reverse display at the lower right of the screen. Note: 2 xxx.xindicates EBL2. 5.5.1.4 Determining the distance (VRM2) Refer to the section Determining the distance (VRM1). The "VRM2" will appear in a reverse display at the lower right of the screen. Note: 2 xx.xx NM indicates VRM2. 5.5.1.5 Measuring the distance or angle between two points ( FL EBL2, FL VRM2 ) Determining the distance (VRM2)

(a) Preparation for the measurement

(1) Use the up-down cursor keys to select FL VRM2 from among the pull-down display items, and press the "ENT" key.

(2) Use the up-down cursor keys to select ON from the ON/OFF display beside the FL VRM2 items, and press the "ENT" key. SET START POINT is displayed and a small cross mark 47 appears. (Once this is set, the "ON" state continues unless changes are made.) Up/Down ENT Up/Down ENT --------------------------------FL VRM2 is turned ON and

(Select FL VRM2) the small cross mark appears.

(Select ON)

(b) Setting a reference point for measurement of the distance Use the left-right and up-down cursor keys to place the small cross mark on one of the two echoes whose distance will be measured, and press the "ENT" key. Up/Down & Left/Right

--------------------------- ENT Criterion of the reference point is set.

(Place the cross cursor on an echo)

(c) Measuring Perform the operations in the above mentioned "Common operation for the MARK menu"

and "measuring the distance(VRM2)", and place the VRM2 on another echo. VRM2 is displayed on the screen around the placed fixed cross cursor.

" 2 xx. xNM" which is displayed at the lower right will be the distance between the two points. measure the distance between two targets

.75

.25 HU

.75

.25 HU center VRM2 of place the VRM2 on another echo small cross mark SET START POINT 20.72NM FL VRM2 indication of VRM2 Note: EBL2 and VRM2 are not follow to "ZOOM" and "OFF-C" function. 5.5.1.6 Measuring the angle between two points (FL EBL2)

(a) Preparation for the measurement

(1) Use the up-down cursor keys to select FL EBL2 from among the pull-down display items, and press the "ENT" key.

(2) Use the up-down cursor keys to select ON from the ON/OFF display beside the FL EBL2 items, and press the "ENT" key. SET START POINT is displayed and a small cross mark appears. (Once this is set, the "ON" state continues unless changes are made.) Up/Down ENT Up/Down ENT --------------------------------FL EBL2 is turned ON and

(Select FL EBL2) the small cross mark appears.

(Select ON)

(b) Setting a reference point for measurement of the angle. Use the left-right and up-down cursor keys to place the small cross mark on one of the two echoes whose angle will be measured, and press the "ENT" key. ENT --- Criterion of the reference point is set. Up/Down & Left/Right

(Place the cross cursor on an echo) 48

(c) Measuring Perform the operations in the above mentioned "Common operation for the MARK menu"

and "measuring the distance(EBL2)", and place the EBL2 on another echo. EBL2 is displayed on the screen based on the placed fixed cross cursor.

" 2 xx. xx" which is displayed at the lower right will be the angle between the two points. Note: The displayed EBL angle is relative to heading or true to north, depends on the setting of "EBL BRG" in the "SETUP" menu. measure the angle between two points Origin EBL2 of FL EBL2

.75

.25 HU

.75

.25 HU small cross mark cross mark SET START POINT 220. 5.5.1.7 Erasing heading marker temporarily (HDG OFF)

(1) Use the up-down cursor key to select HDG OFF from among the pulled down and displayed items.

(2) Press the ENT key. The heading marker is not

.75

.25 HU displayed as long as you hold it down. indication of EBL2 Not displayed while ENT key i h ld d Up/Down ENT ------------ The heading marker is not displayed as long as you hold ENT key down.

(Select HDG OFF) 5.5.1.8 Using parallel cursors (///CSR) Normally EBL is used to measure the exact bearing from the position of your ship to a target. However, you can also use parallel cursors.

(1) Use the up-down cursor key to select ///CSR from among the pull-down and display items, and press the ENT key.(ON/OFF display beside the ///CSR item)

.75

.25 HU

(2) Use the up-down cursor key to select ON .

(3) Press the ENT key. Parallel cursors will appear on the screen. As you move EBL, the parallel cursors also move. To cancel the ///CSR function, either select OFF in (2). 49 EBL1 Parallelc Up/Down ENT

(Select ///CSR)

Up/Down (Select ON) ENT -----------------------Parallel cursor appears Up/Down (Select OFF) ENT -----------------Parallel cursor non-appears Note: Interval of ///CSR same as fixed range marker.

///CSR moves with EBL1. 5.5.1.9 Establishment of the indication of the RANGE RINGS (RINGS)

(1) Use the up-down cursor key to select RINGS from among the pull-down and display items, and press the ENT key.(ON/OFF displayed beside the RINGS item)

(2) Use the up-down key to select ON or OFF and press the ENT key Select ON Select OFF Range Rings ON Range rings OFF Up/Down ENT

(Select RINGS)

Up/Down (Select ON) Up/Down (Select OFF) ENT ----------------- Range rings appears ENT ----------- Range rings non-appears

Number of range rings and range interval

Radome antenna (RA40C) Range 0.125 0.25 Number of Rings 2 2 0.5 2 0.75 3 1.5 6 3 6 Interval 0.062 0.125 0.25 0.25 0.25 0.5 6 6 1 12 6 2 24 6 4 Radome antenna (RA41C) 5 Range Number of Rings 0.125 2 0.25 2 0.5 2 Interval 0.0625 0.125 0.25 Open antenna (RA42C) Range Number of Rings 0.125 2 0.25 2 Interval 0.0625 0.125 0.5 2 0.25 0.75 3 0.25 0.75 3 0.25

.75

.25 HU 3 6 0.5 3 6 0.5 6 6 1 6 6 1 12 6 2 12 6 2 24 6 4 24 6 4 36 8 4 48 8 6 1.5 6 0.25 1.5 6 0.25

.75

.25 HU Range rings Range rings OFF 5.5.1.10 Variable range function ( VAR RNG ) Usually the range changes in steps as 0.5--0.75--1.5--3.0--....., but using this function will enable a consecutive change such as 0.5--0.6--0.7--0.8--.....

(1) Use the up-down cursor keys to select VAR RNG from among the pulled down and displayed 50 items, and press the "ENT" key.

(2) When ON is selected with the up-down cursor key from the ON/OFF display beside the VAR RNG item, and the "ENT" key is pressed, the VAR RNG function becomes valid and VAR will be displayed at the upper left of the screen (beside MODE). Setting procedure Up/Down ENT

(Select VAR RNG) Up/Down (Select ON) ENT

> Up/Down (Select OFF) ENT VAR RNG function is turned ON VAR RNG function is turned OFF

(3) The range changes continuously with pressing the up-down cursor while the VAR RNG function is on, and it changes in steps with the "RANGE UP" or "RANGE DOWN" keys. Method of use Up/Down ------------------------------------------- Range changes continuously RANGE UP & RANGE DOWN -------------- Range changes in step

(4) To cancel the vari-range function, press a key except "RANGE UP" and "RANGE DOWN" key. When use the function, follow from (1) again. 5.5.1.11 Output the position data of Cursor ( TARGET ) Place the cross cursor to the position that is to output position data with up-down and left-

right key. Use the up-down cursor keys to select TARGET from among the pull-down display items, and press the "ENT" key. The L/L data of the position will be output to NMEA port with TLL format. Up/Down

(Select TARGET)

............................................ output the L/L position of the cursor Note: When activate this function, nothing happens on the screen. 5.5.1.12 Follow the Distance and Bearing marker on the cursor (+MK LINE)

(1) Use the up-down cursor keys to select +MK LINE from among the pulled down and displayed items, and press the "ENT" key.

(2) When ON is selected with the up-down cursor key from the ON/OFF display beside the +MK LINE item, and the "ENT" key is pressed, the +MK LINE function becomes valid, and distance/bearing marker will be displayed at the cross cursor. Setting procedure Up/Down ENT

(Select +MK LINE) Up/Down (Select ON) ENT

> Up/Down (Select OFF) ENT

+MK LINE function is turned ON

+MK LINE function is turned OFF

(3) The distance/bearing marker follows to the cross cursor until +MK LINE function is turned OFF. 75

.25 HU

.75

.25 HU 51

52

CHAPTER 4. FUNCTIONS AND NAMES Function and name of each part The RA40C/41C/42C radar consists of a display unit to display video images on a screen and a scanner unit configured with an antenna to radiate radio waves and other components. The display unit has on its front panel eighteen(18) push-switch keys and one cursor key that lets you move a cursor in any desired direction. A combination of these keys allows you to utilize all functions of your radar, providing a comfortable, easy way to operate. 4.1 Key layout Cursor key MENU key ENT key 3 1 HU s 1:58 RADAR OFF

Soft keys(* ) POWER key MENU ENT 1 2 3 4 5 6 7 RANGE UP RANGE DOWN BRILL AUTO GAIN STC FTC POW ER MOB MOTOR RANGE Up key RANGE Down key BRILL key( Contrast Brilliance, keys backlight) AUTO key GAIN key STC key FTC key MOB key Scanner Motor fuse Control knob Key No. SET1 SET2 SET3 SET4 1 2 3 4 5 6 7 EBL1 VRM1 VAR RNG TRACK TARGET SEL WIN NEXT EBL2 VRM2 FL EBL2 FL VRM2 GZ OFF-C NEXT RINGS TUNE ST ZOOM SLEEP PICTURE NEXT PPI PPI/3D PPI/PPI PPI/NAV ALL PPI ALL PPI2 NEXT Tab. 5 Function of soft key (Factory setting)

*Every time Next key is pressed, soft key group switches as follows. SET1 SET2 SET3 SET4 25 4.2 Rear panel SCANNER POWER OPTION

!Power supply connector

"Grounding terminal

$Scanner connector

#Option connector

!!!! Power supply connector Use this connector to plug in the power supply cable. Standard NMEA interface terminal is included in this connector. Refer to Section 3.7 Connecting Cables and Section 3.9 Connecting External Equipment to Display Unit .

"""" Grounding terminal wire. Use this terminal to connect grounding wire. Refer to Section 3.7 (3) Grounding

#### Option connector Use this connector to connect NMEA, an external monitor, external buzzer and GYRO I/F. A dedicated cable or dedicated module box is required to connect these pieces of equipment. Refer to Section 3.9 Connecting External Equipment to Display Unit. Use this connector to plug in the inter-connecting cable to connect the scanner

$$$$ Scanner connector unit. Refer to 3.7 Connecting cable . 4.3 Radar screen Single screen Range Range ring interval Display mode Heading angle Cruising speed Enlarging echo Guard zone Track Way point EBL1 VRM1 3 1 HU L 59 AT AT 0.23NM HDG 129.0 T SPD 12.0 KT G S F ST1 GZ IN TK 15 S WP 134.4 12.5NM

+LAT/LON 3508.42N 13902.53E 1 129.8 1 12.3NM Pulse width Course error Gain STC FTC Cross cursor 1:58 RADAR OFF

Cross cursor position

(LAT/LON or Distance/Bearing j 26 A HOLD ZOOM OFF-C EBL1 Tune meter Picture hold Zoom Off-center VRM1 EBL2 VRM2 FL EBL2 FL VRM2 NEXT D LAT/LON 3508 42N 13902 D53E 2 129 D8 2 12 D34NM Indicate soft key Ships position EBL2 VRM2 4.4 Radar screen (Dual screen) ex) PPI/PPI screen Range(Left screen) Range ring interval

(Left screen) Range(Right screen) Range ring interval

(Right screen) 6 1.0_ HU L

.75

.25 Display mode Pulse width Cross cursor

Cruising speed Guard zone(Right screen) Way point Heading angle Guard zone(Left screen) Course error EBL1 VRM1 0.23 XTE >>>

1 129.8 1 12.34NM SP D 12. 8KT HDG 129 .2

+MK 38. 4 5.28 G Z R IN G Z L IN ST 1 T K 1 5S W AY P 134 .4 12. 5NM 3508. 42N LA T LO N 139 02. 53 d Cross coursor position Enlarging echo

(LAT/LON or Distance/Bearing) Track Ships position VRM2 A HOLD EBL1 VRM1 EBL2 VRM2 FL EBL2 FL VRM2 NEXT AT1 G 59 / AT S AT / AT F AT / AT 2 129 .8 2 3.6 2NM Tune meter Picture hold Indicate soft key AUTO (Left/Right) Gain (Left/Right) STC (Left/Right) FTC (Left/Right) EBL2 4.5 Radar screen (All PPI screen) Pulse width Range Range ring interval Display mode Guard Zone 3 1 HU L GZ IN 1:58 RADAR OFF

OFF-C HOLD ZOOM Off-center Picture hold Zoom Cross cursor 27 4.6 Radar screen (All PPI /PPI screen) Range(Left screen) Range ring interval

(Left screen) L GZ IN 1. 0_ HU 6 Display mode Pulse width Cross cursor

Range(Right screen) Range ring interval

(Right screen)

.75

.25 GZ IN HO LD Picture hold Gurad zone(Right screen) Guard zone(Left screen) 4.7 Navigation screen N A V D I S P L A Y Way point Heading angle Cruising speed Current position Sea water temperature Depth of water W P S P D H D G 1 3 4 . 4 1 2 . 5 N M 1 2 9 . 0 1 2 . 8 K T 3 5 0 8 . 4 2 N 1 3 9 . 0 2 . 5 3 E 2 0 . 5 C T E M P D E P T H 9 3 . 2 M L O N L A T C O U R S E

0 . 2 3 N M Course error

@@(XTE) S T B Y It is necessary that navigation equipment such as a GPS is connected to your radar, this screen displays the position and cruising speed of your ship, seawater temperature, and other navigation information. Note: Heading angle will be displayed "COG" when Course Over Ground data is Note: Cruising speed will be displayed "SOG" when Speed Over Ground data is used. used. 28 Deviation from course Indication mark

0.00 --

> or <

0.02 --

>> or <<

0.04 --

>>> or <<<

0.08 --

>>>> or <<<<

0.16 --

Tab.6 Indication of deviation from course

> Indicates starboarding the helm

(right)

< Indicates porting the helm (left) 29

CHAPTER 6. MAINTENANCE AND INSPECTION Most of maintenance of this radar should be referred to qualified personnel. If radar has any problem, contact your dealer and tell us that problem.

! WARNING There are high voltage circuits inside of this radar. Do not attempt to open the rear cover of display unit or disassemble internal parts. When you open the radome, power must be off. Even power switch is OFF, this radar is still sup-

plied power inside. The following table shows the maintenance by user. Please check periodically. Inspection Interval 3-6 months 6-12 months Tab. 6-1 Maintenance Inspection Item Rust and looseness in scanner unit Display screen of LCD display Grease* application to antenna drive gear Check for contact of connectors Antenna motor brush(RA42C) Method of Inspection and Maintenance Check whether the scanners fitting bolts are corroded or less. Clean filter and LCD screen surfaces with a soft and wet cloth. Apply an even coating of grease* to the entire surface of the antenna drive gear with a spat-

ula or brush. Check whether connectors are contacted properly. If any connector is improperly con-

tacted or stained, correct it by using a contact restoring chemical agent or by polishing or replace with a new one if necessary. Check the length of brushes. If the length is under 6mm, change them to new one.

*: Use grease for plastics for RA40C/41C. If you use other type of grease(not for plastics), it may break antenna Concerning Consumable The radar uses consumable as listed below that require periodic replacement.

(1) Magnetron This part is mounted in the scanner unit. If distant echo images have become less visible, the magnetron probably may have degraded. In such a case, replace it. Consult your distributor for replacement of this part. Period of the replacement : 3000hour(typ.) (500hour guarantee)

(2) LCD back-light This part is mounted in the display unit. If the display screen is ex-

tremely dark and its illumination cannot be corrected by adjusting bright-

ness, the LCD back-light may be faulty or may have burnt out. In such a case, replace it. Consult your distributor for replacement of this part. Period of the replacement : 15000hour(typ.) (1000hour at 0

) 79

(3) Fuse The fuse is built in the power supply cable. If the fuse appears to be blown, check the fuse. If blown, it following the procedure shown in Fig.6-2. replace Power supply cable To display unit Push Wire(White) Turn counterclockwise and pull Spring Fuse Replace new fuse Push and turn clockwise Note: Before maintenance of scanner, you can hang a radome(upper) using cord through hole as follows. Fig. 6-2 Method for replacing fuse A Cord A: Top view Hole Fixing screw Radome(bottom) Radome(Upper) Cord Fig. 6-3 Method for replacing fuse 80

CHAPTER 7. TROUBLESHOOTING This chapter explains how to identify trouble locations when the radar is found faulty and how to request repair. It happens any disorder, keep pressing POWER key for 3 sec. to power off. Then wait over 10 sec., when you power on again. If you find the radar is faulty, check it the following procedure described below. If you find as a result of inspection that the fault cannot be repaired on board, con-

tact your distributor for repair. For faster service, please let us know about followings when you request repair:

(1) Ship's name, place of anchorage, allowable repair period or time

(2) Radar type (This radar is RA40C, RA41C or RA42C.)

(3) Manufacturing number (indicated on the back of the display unit)

(4) Fault symptoms and inspection results

! WARNING There are high voltage circuits inside of this radar. Do not attempt to open the rear cover of display unit or disassemble internal parts. When you open the radome for installation, power must be off. Even power switch is OFF, this radar is still sup-

plied power inside. This chapter explains how to identify trouble locations when the radar is found faulty and how to request repair. 7.1 Fault Diagnosis by Self-check The radar incorporates a failure diagnostic function (called "self-check") to diag-

nose faults by the equipment itself. Refer to "5.5.4.4 Fault Diagnosis by Self Check (SYSTEM CHECK)" and check whether there is any fault in your radar. 7.2 Inspecting Each Part 81 When you have finished self-check, inspect each part of the radar according to Tab.7-1. Tab. 7-1 Troubleshooting Symptom Cause Corrective action

(1) Radar cannot be powered on. Power cable is disconnected. Connect power cable correctly.

(2) Nothing is displayed al-

though radar is powered on.

(3) Screen is dark.

(4) Video does not appear al-

though characters are displayed.

(5) Echo image on screen differs from actual image.

(6) Echo images are blurred.

(7) Too much noise. is off Power supply voltage specified value Fuse in power cable is blown. Brightness or contrast are im-

properly adjustment. LCD is faulty. Brightness is justed. Backlight is faulty. Interconnecting cable is out of place. Ships heading is incorrectly set. Set ships heading correctly. Use Specified power supply.

(See Section 3.2) Replace fuse. (See Chapter 6) Use BRIL key to adjust. (See Section 5.3.) Contact your dealer. Use BRIL key to adjust. (See Section 5.3. Contact your dealer. Connect interconnecting cable correctly. improperly ad-

Timing adjustment is incorrectly set. GAIN, STC, or FTC is improp-

erly set. Magnetron has degraded. Radar is not tuned correctly Radar is not grounded to earth.

(See Section 5.5.4.5.4) Set timing adjustment correctly.

(See Section 5.5.4.5.4) Adjust. (See Section 5.3.6 to 5.3.8.) Contact your dealer. Adjust TUNE. 5.5.3.4) Connect grounding wire. (See Section 3.4 to 3.6.) Contact your dealer.

(See Section

(8) Not responded when key is pressed. Panel keys are not contacting. Power supply circuit is faulty. Contact your dealer. 82

CHAPTER 8. PRODUCT SPECIFICATIONS 8.1 General Type:

RA40C, RA41C and RA42C Power supply voltage and power consumption Power supply voltage:

Power consumption:

24Vdc (nominal)

(10.2 to 41.6 Vdc) 55 W or less (RA40C/41C) 70 W or less (RA42C) Distance range:

Distance resolution:

Distance accuracy:

maximum 8m, Minimum detecting distance:

Bearing resolution:

Bearing accuracy:

Warm-up time:

Environment conditions Ambient temperature range Humidity:

Vibration:

test rpm) 0.125 to 24 NM, 9 ranges 0.125 to 36 NM, 10 ranges

(RA40C)

(RA41C) 0.125 to 48 NM, 10 ranges

(RA42C)

(Continual variable range also possible) Within 30 m (RA40C) Within 25 m (RA41C/42C) Better than 0.9% of range of the scale in use, or whichever is the greater Within 30 m (RA40C) Within 25 m (RA41C/42C) Within 7.5(RA40C) Within 4.5 (RA41C) Within 3.0 (RA42C) 1 or less 2 minutes

(S/U):

(D/U):

-25 to 55 C 0 to 55 C 93% RH at +40 C

(S/U): 3 mm( 300 to 500 rpm) 1.2 mm(500 to 1500 rpm) 0.3 mm(1500 to 3000 rpm) 14.7m/s2(1.5G) Resonance 0.75 mm(500 to 1500

(D/U):

3 mm(300 to 500 rpm) 0.2 mm(1500 to 3000 83

rpm) Wind resistance:

Waterproof standard:

Interconnecting cable:

Noise:

100 knots (max.)

(D/U):

(S/U):

IPX-5 IPX-6 30 m in max. (RA40C) 100 m in max. (RA41C/42C)

(D/U):

(S/U):

(S/U):

65 dB or less 65 dB or less (RA40C/41C) 70 dB or less (RA42C) 84 8.2 Scanner Unit Type:

Antenna type:

Antenna characteristics Beam width (horizontal):

Beam width (vertical):

Pulse width and peak power output: RB714A (RA40C) RB715A (RA41C) RB716A (RA42C) Parabolic (RA40C) Slotted-array (RA41C/42C) 6.0 1.0 (RA40C) 3.9

(RA41C) 2.5 0.3

(RA42C with 3ft antenna)

(RA42C with 4ft antenna)

(RA40C/41C)

(RA42C with 3/4ft antenna) 25 (typ.) 22 (typ.) 1.8 0.2 RA40C Pulse width (sec) Peak Power (kW) 0.12 0.02 0.3 0.05 0.8 0.1 1.5 (50% ) 2.0 (50% ) 2.0 (50% ) RA41C/42C Pulse width (sec) Peak Power (kW) 4 (-50% to +20%) 0.08 4 (-50% to +20%) 0.25 0.8 4 (-50% to +20%) Radio wave type and frequency:

Antenna revolution:

Transmit/receive switching:

P0N, 9445 30 MHz (RA40C) P0N, 9410 30 MHz

(RA41C/42C) 24 rpm 20%

Magic T and limiter type

(RA40C) Circulator and limiter type

(RA41C/42C) Intermediate frequency:

Noise figure:

60 MHz

(logarithmic amplifier) 6.5 dB or less 8.3 Display Unit Type:

Indication system:

Indicator:

RF719A PPI, PPI+semi-3D, Split radar range 10-inch color LCD(TFT) 640 x 480 dots Four(4 ) levels 85 Cursor Control:

VRM:

EBL:

Display modes:

Off-center:

Guard zone:

Stretch:

Echo track:

Other functions:

Panel brightness:

Language support:

Analog cursor key and rotary encoder 2 lines (One line can be offset.) Unit of distance can be selected from NM, KM, and SM. 2 lines (One line can be offset.) HU, HS, NU, CU, and TM Can be 100% off-centered over the full range. Can be set at any desired distance and angle in any desired width. IN and OUT modes are available. 2 modes 15, 30 sec, 1, 3, 6 min. and continuous. Interference rejection, Zoom, Sleep mode, Hold mode, Course error display, Parallel cursors, Stern marker, and Navigation data display mode 4 levels Chinese, Danish, English, French, German, Greek, Italian, Japanese, Korean, Norwegian, Portuguese, Russian, Spanish, Swedish, and Turkish 8.4 External Interface NMEA0183:

2 channels

(One standard channel;

Optional cable is required for 2nd-channel connections) GGA, GLL, RMA, RMC HDT, HDG, HDM, HSC, VHW, VTG VHW, VTG, RMA, RMC RMB, BEC, BWC, BWR, BER, BPI DBT, DPT RMB, XTE L / L Heading Speed Way point Depth Course error 86 Seawater temperature MTW Others (using optional cable):

External buzzer control output, Auxiliary indicator connecting signal output and input, Bow direction signal input(SIN/COS signals), and compass interface (10/12 bits serial) 8.5 Standard set Display unit Scanner unit Display cover Fuse Interconnecting cable Power supply cable M10 hexagonal bolt M12 hexagonal bolt 1 1 1 1 set 1 (10m) 1 (2m) 4 sets (for RA40C/41C) 4 sets (for RA42C) 8.6 Options Interconnecting cable (15, 20, and 30 m for RA40C) Interconnecting cable (15, 20, and 25 m for RA41C/42C) Flush-mount installation kit Junction box for external connection (with cable 1.5m) Option connector kit 249J153058 8.7 External dimensions and weight See APPENDIX 8.8 External Connection and function X1 pin No. Name function Connector for Option 1 19 2 20 3 21 4 22 5 23 6 24 7 25 NMEA2-A NMEA2-B GND EXBUZ+

EXBUZ-

VIDEO_IN VIDEO_OUT GND TRIG_IN TRIG_OUT SHF_IN SHF_OUT AZI_IN AZI_OUT NMEA ch2 data input(A) NMEA ch2 data input(B) Output for External Buzzer Output for External Buzzer controlled ship's power output Video input for Monitor operation 0 to -1V negative video, Zi = 50ohm Video output for External Monitor 0 to -1V negative video, Zo = 50ohm Trigger signal input for Monitor operation 0 to 5V positive pulse, rising edge Trigger output for External Monitor 0 to 5V positive pulse, rising edge Heading signal input for Monitor operation 0 to 5V negative pulse, falling edge Heading signal output for External Monitor 0 to 5V negative pulse, falling edge Bearing Pulse input for Monitor operation 0 to 5V positive pulse, rising edge Bearing Pulse output for External Monitor 87 8 26 9 27 10 28 11 29 12 30 13 31 14 32 GND GYRCK+

GYRCK-

GYRDT+

GYRDT-

GND MARK_I

+12V SIN COS REF

GND NMEA_OUT 0 to 5V positive pulse, rising edge Gyro Interface clock(+) input Gyro Interface clock(-) input apply 5V pulse between (+) and (-), isolated Gyro Interface data(+) input Gyro Interface data(-) input apply 5V pulse between (+) and (-), isolated External Marker signal input, ex) Radar Buoy negative video, 0 to -1V Zi = 50ohm External interface power, 100mA max. Compass Interface for SIN/COS type Compass Interface for SIN/COS type Compass Interface for SIN/COS type SIN/COS signal: SIN = REF+/-1V, COS = REF+/-1V not used NMEA data output, ex) MOB data, TARGET data 88