FCC ID: C8LB6100 VHF Fixed Ground Based Aeronautical Receiver

T6R Receiver User Guide Issue 1 Handbook Title:

T6R Receiver User Guide Handbook Part Number:

31-360000RX 1 November 1999 Park Air Electronics Northfields Market Deeping Peterborough England PE6 8UE From UK, From outside UK, 44 1778 345434 01778 345434 From UK, From outside UK, 44 1778 342877 01778 342877 Issue Number:

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Page ii Handbook Amendment Record Amendments to this handbook, originated by Park Air Electronics, are listed in the following table. Amendment Number Date Brief Details PAE Change Note Number Equipment Modification Record Modifications to the T6R receiver are detailed in the following table. The equipments modification label shows all modifications embodied in the equipment. Modification Number Date Brief Details PAE Change Note Number Page iii List of Abbreviations The following abbreviations are used in this user guide:

A amp AM amplitude modulation BIT built-in test dB decibel DSP digital signal processing ETI elapsed time indicator ICAO international civil aviation organisation kg kilogram kHz kilo Hertz LCD liquid crystal display mA milliamp MARC multi-access remote control system MHz mega Hertz mm millimetre ppm parts per million PSK phase shift keying rms root mean square RSSI receiver signal strength indication V volt VFP virtual front panel VHF very high frequency Page iv T6R Receiver User Guide Section 1 General Information T6R General Information Section 1 Page 1 Section 1 Contents Chapter 1. Chapter 2. Overview Introduction to the T6R Receiver T6R Handbooks Operational Settings Virtual Front Panel Built-In Tests Configuring the T6R Receiver Specification Dimensions and Weight RF Characteristics Environmental Power Requirements Chapter 3. Controls, Indicators, and Connectors Front Panel Receive Indicator Alarm Indicator Ready Indicator Standby Indicator Reference Connector Headset/Diagnostics Connector Scroll/Select Switch and LCD Rear Panel Power Switch AC Input Connector DC Input Connector Fuse F1 Chassis Stud Connection Facilities Connector CN5 MARC Port CN6 Computer Port CN7 Antenna Connector Installation Procedures Introduction Initial Inspection of the Receiver Fitting the Correct AC Input Fuse Fitting a Radio into an Equipment Rack Connecting Remote Facilities Chassis Stud Connection AC Supply Connection DC Supply Connection Connecting an Antenna Switching on Chapter 4. Page 3 3 4 5 5 6 9 9 9 10 11 11 11 11 11 12 12 13 14 14 14 15 15 15 15 16 16 16 21 22 22 23 23 24 24 25 25 25 Section 1 Page 2 T6R General Information Chapter 1. Overview This chapter provides an introduction to the T6R receiver, briefly describes the features, and shows how the radio is configured for operational use. INTRODUCTION TO THE T6R RECEIVER Park Air Electronics (PAE) T6R is a VHF multi-mode air traffic control receiver compatible with analogue

(AM) and digital (D8PSK) modulation modes. Current models are supplied programmed for AM voice operation in the frequency range 118 to 136.975 MHz using 25 kHz or 8.33 kHz channel spacing. Future software upgrades will allow D8PSK operation. A multi-channel feature of the receiver allows up to 100 channels to be stored, and recalled by channel number. Channel designation and all operational settings can be selected from the front panel, or by using the virtual front panel (VFP), or through a compatible control and data system such as the PAE multi-access remote control (MARC). The receiver is designed to be fitted in an industrial 19 inch (483 mm) equipment rack. Operation is from either a standard ac mains supply, or from a low voltage dc supply. When both input supplies are connected, the dc supply acts as a back-up if the mains supply fails. Comprehensive continuous and interruptive Built-In Tests (BIT) provide confidence of the receivers serviceability. T6R HANDBOOKS This user guide describes the T6R receiver and gives complete installation and setting up procedures. The user guide is split into sections as follows:

Section 1. Section 2. Section 1 (this section) provides general information that is common to all operating modes. Section 2 provides information that is specific to operating the T6R receiver in AM-voice mode. Section 3. Section 3 onwards will, when available, describe the digital operating modes. A maintenance kit (PAE part number 70-6100MKIT) is also available. A maintenance handbook, included in the kit, contains fault finding guides to module level and details VFP operation. The VFP can be used for setting up, maintenance purposes, and for loading new software. T6R receiver maintenance should not be attempted without reference to the maintenance handbook The maintenance kit includes a CD-ROM containing the VFP software, and a lead for connecting the radio to a Personal Computer (PC). The CD-ROM also contains the software as loaded into the T6R at the time of sale. This enables the original software to be re-loaded if the receivers Digital Signal Processing (DSP) module is ever replaced. Both the user guide and maintenance handbook are available on CD ROM. Contact PAE for details. T6R General Information Section 1 Page 3 OPERATIONAL SETTINGS Operational settings for the T6R receiver are configured at the front panel, through the VFP, or through an associated MARC system (or compatible control and data system). At the receiver, operational settings are selected and displayed using the front panel Scroll/Select switch and the LCD. F r e q C h a n 1 2 3 . 0 0 0 M H z 1 V o l l l l l l l l l l l l l The settings are selected through a series of menus. Full details are given in the section of this user guide applicable to the operating mode. Two example selection menus, Set Frequency menu and Channel Storage menu, are shown below. 1 2 1 . 5 0 0 M H z C a n c e l O K C h 1 0 0 1 2 1 . 5 0 0 M H z C a n c e l S t o r e S t o r e a n d E n d During normal receiver operation, the Main screen, shown below, is displayed. The screen shows the operating frequency, the channel number (if the channel store facility is used), and displays a graphical representation of volume. F r e q 1 2 3 . 0 0 0 M H z C h a n 1 V o l l l l I I I I I I I I I Section 1 Page 4 T6R General Information Virtual Front Panel As an alternative to setting up the receiver from the front panel, the T6Rs virtual front panel (VFP) software can be used. To use the VFP, an IBM compatible PC must be connected to the receiver (see Fig. 1-1). Using the VFP offers several advatages over setting up from a receivers front panel. These are:

q When set up using the VFP, a profile of the receivers operational settings can be created. The profile can then be used to automatically set up other radios within a system, or to reset a radio should the DSP module ever be replaced. q After setting up from the VFP, the receivers front panel can be locked. This means that a receivers settings cannot inadvertently be changed by tampering with the front panel controls. q A print-out of a receivers profile (all the operational settings) can be made from the VFP. Instructions on VFP usage is outside the scope of this user guide. Reference, therefore, should be made to the T6R maintenance kit that includes a CD-ROM containing the VFP software. BUILT-IN TESTS The receiver continuously self monitors key internal parameters without affecting normal operation. If a BIT fault is detected, the front panel Alarm indicator lights, the Ready indicator becomes unlit, and the receiver becomes inoperable. Apart from continuous monitoring, an interruptive BIT test can be initiated locally at the front panel, or remotely. When initiated, test signals are injected into the receivers RF circuit allowing parameters to be monitored in their active state. The results of continuous monitoring, and of interruptive testing, are available at the front panel LCD. When the receiver is used with a MARC system (or other compatible data and control system) the results are also sent, in the form of a data message, to the monitoring facility. A full description of the BIT facilities is given in the section of this user guide applicable to the operating mode. The following illustration shows an example front panel BIT display. S y n t h L o c k P A S S S e n s i t i v i t y P A S S S e n s .

- 1 0 7 d B m

T6R General Information Section 1 Page 5 CONFIGURING THE T6R RECEIVER Fig. 1-1 shows the signal connectors fitted to the receivers front and rear panels. The connectors used to configure the receiver depend on the required operating mode. The purpose of each connector is briefly described in the following paragraphs and fully detailed in chapter 3. Antenna Connector Used in all operating modes to connect the 50 ohm antenna feeder cable. Headset/Diagnostics Connector This is a dual purpose connector. A headset can be connected to enable local AM-voice operation. Alternatively, a PC can be connected to allow use of the VFP, to set the receivers operational settings, or to download new software. Reference Connector Used in all operating modes to check and reset the receivers reference frequency. Facilities Connector Used primarily to connect remote signals when using AM-voice mode when the receiver does not form part of a MARC system. MARC Port Some auxiliary signals available at this connector, for example the 24 volt (nominal) unregulated output supply, can be utilized irrespective of the operating mode. The MARC port is used to connect remote signals when the receiver forms part of a MARC system, or other compatible control and data system. Computer Port The computer port is used in digital communication modes to connect the receiver to a control computer. Section 1 Page 6 T6R General Information T6R Receiver Antenna Connector Computer Port MARC Port Signals to/from a control computer. Used when operating in digital communication modes. Signals to/from an RSE 2 equipment. Used when the radio forms part of a MARC system. Reference Connector Headset/Diagnostics Connector Facilities Connector Remote Signals. Headset for Local AM Operation. PC to allow use of the VFP and to new software. download Frequency Counter for maintenance purposes. Fig. 1-1. T6R Receiver Configuration T6R General Information Section 1 Page 7 Intentionally Blank Section 1 Page 8 T6R General Information Chapter 2. Specification This chapter contains the T6R receivers specification that is common to all operating modes. Specifications relevant to specific operating modes are contained in the section applicable to the required operating mode. DIMENSIONS AND WEIGHT The dimensions and weight of the T6R receiver are:

Width Height 483 mm (19 inches). 88.9 mm (3.5 inches). The height occupies 2U of equipment cabinet space. Depth (front panel to rear panel) 430 mm (16.9 inches). Weight 5.8 kg (12.8 pounds). RF CHARACTERISTICS Frequency range 118 to 136.975 MHz. Number of channels The receiver has a multi-channel capability. 100 channels can be stored and recalled. Frequency accuracy Better than 1 ppm. Maximum RF input The receiver can withstand an input at the antenna connector of:

5 V rms continuous. 15 V rms for 20 seconds. Unwanted signal suppression The first and second IF image rejection is greater than 80 dB. For other frequencies, spurious signals are suppressed by more than 100 dB. ENVIRONMENTAL Temperature range Warm up time Storage T6R General Information The receiver operates to specification at temperatures between -20 and +55 C and at a relative humidity between 5% and 90% (non-condensing). The receiver is fully operational 5 seconds after switch on. The receiver can be stored at temperatures between -30 and +70 C without causing damage. Section 1 Page 9 POWER REQUIREMENTS The receiver operates from an ac input supply, or a dc input supply. When both supplies are connected, the dc input acts as an automatic backup supply for the ac mains. ac input supply The receiver operates from a 48 to 62 Hz single-phase ac supply, and automatically adjusts to operate from any supply voltage between 99 V ac and 264 V ac. ac power consumption Typically 75 VA. dc input supply Between 21.6 and 32 V. dc supply current At 28 V current is typically 700 mA. 1 amp maximum. Section 1 Page 10 T6R General Information Chapter 3. Controls, Indicators, and Connectors This chapter details the purpose of all controls, indicators, and connectors fitted to the receivers front and rear panels. FRONT PANEL The front panels controls, indicators, and connectors are shown below and described in the following paragraphs. F r e q C h a n 1 2 3 . 0 0 0 M H z 1 V o l l l l l l l l l l l l l Receive Indicator An amber indicator that lights when a signal is received that is above the squelch threshold. Additionally, this indicator is lit when the receivers squelch facility is switched off (squelch defeated). Alarm Indicator A red indicator that either lights, or flashes, when a BIT fault has been detected. BIT indications are classified as either warnings or faults. When a fault is detected, the Alarm indicator lights and the Ready indicator becomes unlit; the receiver cannot be used. If a warning is detected, the Alarm indicator flashes, the Ready indicator remains lit, and the receiver remains operational. Ready Indicator A green indicator that lights when the receiver is ready for use and no BIT faults have been detected. Standby Indicator A red indicator that lights when the receiver is in standby mode. When in standby mode, most of the receivers circuits are inactive, and the front panel LCD is blanked; the receiver is inoperable until standby mode is deselected. Standby mode is selected and deselected using the front panel Scroll/Select switch and LCD, by initiating an instruction through a MARC system, or through the VFP. Details of front panel selection and deselection are given in the section of this user guide applicable to the particular operating mode. T6R General Information Section 1 Page 11 Reference Connector An SMB jack socket that allows a high impedance frequency counter to monitor the receivers reference frequency. This connector is used only for maintenance purposes. The instructions for checking and adjusting the reference frequency are given in the T6R maintenance handbook. Headset/Diagnostics Connector A dual purpose connector that allows either a headset or a PC to be connected to the receiver. The connector is a 7-pin self locking DIN socket. A headset can be fitted to this connector to enable the receiver to be operated in AM local mode. The connections are detailed in Table 1-1. A PC can also be connected to allow the VFP to be displayed. Using the VFP is detailed in the T6R maintenance handbook. The connections at the receiver are shown in table 1-2.

(DEV083-05) Fig. 1-2. Headset/Diagnostics Connector Pin-Out Table 1-1. Microphone/Headset Connections Headset/Diagnostics Connector Pin Number Signal Notes 1 5 Ground 0 volt. Headset drive Maximum = 3 volt peak-to-peak. 200 ohm output impedance. Table 1-2. Diagnostics PC Connections Headset/Diagnostics Connector Pin Number Signal Notes 2 4 7 Transmit data Receive data Ground RS232 RS232 0 volt Section 1 Page 12 T6R General Information Scroll/Select Switch and LCD The Scroll/Select switch is used in conjunction with the LCD to select most of the receivers operational settings. Use of the switch and LCD is fully detailed in the section of this user guide relevant to the particular operating mode. During normal operation, the LCD shows the operating frequency, the channel number (if the channel store facility is used) and displays a graphical representation of volume. The example LCD screen below shows the receiver operating on 123.000 MHz; the frequency has been preset as channel 8. During normal receiver operation, when the main screen is displayed, the Scroll/Select switch acts as the volume control. F r e q 1 2 3 . 0 0 0 M H z C h a n 8 V o l l l l l I I I I I I I I T6R General Information Section 1 Page 13 REAR PANEL The rear panels controls, indicators, and connectors are shown in Fig. 1-3 and described in the following paragraphs. DEV083-11a Fig. 1-3. Rear Panel Power Switch A 2-way rocker switch used to switch on, and switch off, power to the receivers circuitry. l = On

= Off WARNING!

When the POWER SWITCH is set to the Off position, lethal voltages are still present in the receivers internal power supply circuitry. To ensure safe working, the ac and dc input supplies must be disconnected from the receiver. AC Input Connector A 3-pole IEC chassis plug for connecting the ac input supply. The plug has an integral 20 mm fuse (F2) that protects the Line (L) input circuit. The fuse is rated at 3.15 amps (see page 22 for further detail). Detailed instructions for connecting the ac supply are given in the installation chapter on page 24.

(SA3536) Fig. 1-4. AC Connector Section 1 Page 14 T6R General Information DC Input Connector A 3-pole chassis plug for connecting the dc input supply. Detailed instructions for connecting the dc supply are given in the installation chapter of this handbook on page 25.

(DEV083-06) Fig. 1-5. DC Connector Fuse F1 Fuse F1 protects the dc input positive supply circuit. It is a size 0 fuse rated at 3 amps. The PAE part number of the fuse is: 29-11100202. Chassis Stud Connection The chassis stud is used to provide a common earth point between the receiver and the associated equipment rack, or the receiver and the users system earth. The stud must not be used as a safety earth. Connection details are given on page 24. Facilities Connector CN5 A 15-way D-type socket used primarily to connect remote signals when the receiver operates in AM-mode and does not form part of a MARC (or similar) system.The pin-out of this connector is given in table 1-3 on page 17. Apart from allowing connection of remote signals, this connector makes some auxiliary signals available to the user. For example, a 24 volt (nominal) unregulated output supply. The auxiliary signals can be employed by the user as and when required, irrespective of the operating mode. Facilities connector CN5 as seen when looking at the rear panel. Connections should be made using a 15-way D-type plug PAE part number: 20-01150100 (plug), and 20-09150101 (cover). These are supplied with the receiver as Item 3 (see page 22). Fig. 1-6. Facilities Connector CN5 Pin-Out T6R General Information Section 1 Page 15 MARC Port CN6 A 9-way D-type socket used to connect remote signals to a MARC system or other compatible control and data system. The pin-out of this connector is given in table 1-4 on page 18. MARC connector CN6 as seen when looking at the rear panel. Connections should be made using a 9-way D-type plug PAE part number: 20-01090100 (plug), and 20-09090101 (cover). Fig. 1-7 MARC Port CN6 Pin-Out Computer Port CN7 A 25-way D-type socket used to connect the receiver to a control computer when the receiver is operated in digital communication modes. The pin-out of this connector is given in table 1-5 on page 19. Computer port CN7 as seen when looking at the rear panel. Connections should be made using a 25-way D-type plug PAE part number: 20-01250100 (plug), and 20-09250101 (cover). Fig. 1-8 Computer Port CN7 Pin-Out Antenna Connector An N-type 50 ohm coaxial socket used to connect the antennas feeder cable. Section 1 Page 16 T6R General Information Table 1-3. Facilities Connector CN5 Pin-Out Pin Number Signal Name Description 1 2 3 4 5 6 7 8 9 Ground 0 volt Line Out (+) Line Out (-) Squelch Defeat Squelch Relay Common Squelch Relay Output Pins 2 and 3 are a 600 ohm balanced audio output. The output level is adjustable between -30 and 0 dBm. An input signal to the receiver that, when active, disables the receivers squelch circuits. This is a TTL input pulled-up to 5 V. The active polarity is set from the front panel. Pins 5 and 6 are a relay circuit that operates when a signal, above the squelch threshold, is received. This circuit can switch voltages in the range -50 to +50 V (100 mA maximum) and can be configured, at the front panel, to be normally open or normally closed. Note that the configuration follows the polarity of the squelch indication signal (see table 2-5 on page 28 of section 2 for more detail). Squelch Indication This grounding output, when active, indicates a signal above the squelch threshold is being received. The active polarity is set from the front panel. Ground 0 volt Unregulated Supply A dc output supply between 21.6 and 32 volt (nominally 24 volt). The supply is fused at 500 mA. 10 Rx Disable 11 BIT Interruptive Test 12 RSSI 13 Ready Output An input signal that, when active, disables the receivers audio output. When a receiver is configured with an associated transmitter to form a base station, this signal can be used to disable the receivers audio output when the transmitter is keyed. This is a TTL input pulled-up to 5 V. The active polarity is set from the front panel. An input signal that initiates a BIT interruptive test. This is a TTL input pulled-up to 5 V. The active polarity of this signal is set from the front panel. The input signal must be active for a minimum of 300 ms; the signal cannot then be activated again for at least 3 seconds. An analogue Receiver Signal Strength Indication that varies between 0 volt and 10 volt. For a received signal of 1 m V the output is less than 2 volts. For a received signal of 100 m V the output is greater than 6 volts. The output impedance is 10 ohm. RSSI can be used to provide relative indications when two receivers are configured as a main and standby pair, when using receiver voting, or when associated transmitter field strength monitoring is required. This output is active when the radio is ready to receive and no faults have been detected by the BIT circuitry. It is a grounding output. The active polarity is set from the front panel. 14 15 Tape Output An audio output for connection to a recording system. The output is nominally -10 dBm into 100 ohm. Not Used

T6R General Information Section 1 Page 17 Table 1-4. MARC Connector CN6 Pin-Out Pin Number Signal Name Description 1 2 3 4 5 6 7 8 9 Ground Line Out (+) Line Out (-) Squelch Indication Unregulated Supply Data In (+) Data In (-) Data Out (+) Data Out (-) 0 volt. Pins 2 and 3 are a 600 ohm balanced audio output. The output level is adjustable between -30 and 0 dBm. This output, when active, indicates a signal above the squelch threshold is being received. The active polarity is set from the front panel. A dc output supply between 21.6 and 32 volt. The supply, which is fused at 500 mA, is used as the power source for the MARC RSE 2 equipment. RS422 data line. RS422 data line. RS422 data line. RS422 data line. Section 1 Page 18 T6R General Information Table 1-5. Computer Port CN7 Pin-Out CN7 Pin Number Signal Name Level Input or Output 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Ground Serial 0 TXA Serial 0 TXB Serial 0 RXA Serial 0 RXB Serial 0 CLA Serial 0 CLB Serial 1 TXA Serial 1 TXB Serial 1 RXA Serial 1 RXB Serial 1 CLA Serial 1 CLB Input A Input B Input C Input D Output A Output B Output C Output D Ground Not used Not used Not used 0 volt RS422 RS422 RS422 RS422 RS422 RS422 RS422 RS422 RS422 RS422 RS422 RS422 RS 232 RS232 RS232 RS232 RS232 RS232 RS232 RS232 0 volt

Output Output Input Input Output Output Output Output Input Input Output Output Input Input Input Input Output Output Output Output

T6R General Information Section 1 Page 19 Intentionally Blank Section 1 Page 20 T6R General Information Chapter 4. Installation Procedures This chapter details the installation procedures for a T6R receiver that are necessary irrespective of which operating mode is to be used. WARNING. LETHAL VOLTAGES!

The instructions given in this chapter involve connecting lethal voltages to the receiver. The instructions detailed in this chapter must be carried out only by suitably qualified personnel. WARNING. UNAUTHORIZED MODIFICATIONS!

Changes or modifications made to this equipment that are not expressly approved by Park Air Electronics, or parties authorized by Park Air Electronics, could void the users authority to operate the equipment. CAUTION. ESSDs!

The T6R receivers circuitry contains Electrostatic Sensitive Devices (ESSDs). Personnel must be aware of the precautions necessary to prevent damage to such devices. During installation all precautions necessary to prevent ESSD damage must be taken. INTRODUCTION The procedures in this chapter describe how to install a T6R receiver. The procedures necessary during installation are listed in table 1-6 and should be completed in the order shown. Table 1-6 Installation Procedures Procedure Reference 1 2 3 4 5 6 7 8 Perform an initial inspection of the receiver. Fit the correct ac input fuse. Fit the receiver into an equipment rack. Connecting remote facilities. Connect the chassis stud to the rack or system earth. Connect the ac input supply (if applicable). Connect the dc input supply (if applicable). Connect an antenna. Page 22 Page 22 Page 23 Page 23 Page 24 Page 24 Page 25 Page 25 T6R General Information Section 1 Page 21 INITIAL INSPECTION OF THE RECEIVER On receipt of the receiver from PAE, remove all transit packaging and check that there is no transit damage. If damage is evident, contact PAE immediately and retain the original transit packaging. The following items should be included with the receiver:

Item 1. Item 2. Item 3. One copy of the T6R user guide (this handbook). An unterminated IEC mains connector. An unterminated 15-way D-type plug (for use with the rear panel Facilities connector CN5). FITTING THE CORRECT AC INPUT FUSE The mains input fuse F2 is an integral part of the rear panel ac connector (the connector and fuse are shown in Fig. 1-4 on page 14). The fuse type must be correct for the local mains supply. Check the fuse fitted conforms to that detailed in table 1-7. Table 1-7 Input AC Fuse Rating Mains Input Supply Fuse PAE Part Number 110/120 V T3.15A UL 29-01470102S 220/230/240 V T3.15A 250 V IEC 127 HBC 29C01100102S Section 1 Page 22 T6R General Information FITTING A RADIO INTO AN EQUIPMENT RACK CAUTION!

It is essential that the chosen mechanical installation provides adequate support along the depth (front to rear) of the unit. The receiver must not be supported by the front panel; doing so can cause damage. The receiver can be installed on telescopic slides, or on fixed runners, within a standard 483 mm

(19 inch) equipment rack. M4 tapped holes, each 10 mm deep (see Fig. 1-9) are provided on each side of the equipment to accept the slides. Details of suitable telescopic slides and fixed runners are available from PAE. When fitted in the rack, the receivers front panel must be secured to the racks chassis using four M6 x 16 mm screws and plastic washers.

(DEV083-24) Fig. 1-9. Telescopic Slide Fixing Points CONNECTING REMOTE FACILITIES Remote facilities connections depend on the receivers operating mode. To determine the required remote connections, refer to chapter 3 of the section applicable to the operating mode. T6R General Information Section 1 Page 23 CHASSIS STUD CONNECTION WARNING. CHASSIS EARTH!

A chassis stud is fitted to the receivers rear panel. This stud is used to connect the equipment to the equipment rack, or to the users system earth point. The stud must not be used as the safety earth. In order not to compromise the receivers Electromagnetic Compatibility (EMC) the chassis stud, marked and fitted to the rear panel (see Fig. 1-3 on page 14) must be connected to the equipment rack (if a rack is being used) or to the users system earth point. The connection should be made using a single tri-rated, green-and-yellow cable having a cross-sectional area of 2.5 mm2. The cable should have CSA and UL1015 approval, and be connected to the chassis stud through an M6 eyelet (for example, PAE part number 20-08010103). Failure to comply with this instruction could result in non-compliance with the European Commission EMC Directive 89/336/EEC. AC SUPPLY CONNECTION WARNING. LETHAL VOLTAGES!

The equipment is permanently connected to the mains supply when the mains connector is attached. Switching the rear panel Power switch to off does not isolate all internal circuits from the mains supply. For this reason, a mains isolating switch should be fitted close to, and easily accessible from, the receivers position. WARNING. EARTH CONNECTION!

This equipment must be earthed. The earth terminal of the AC connector should be used as the safety earth. An ac input connector (see Fig. 1-4 on page 14) is fitted to the equipments rear panel. The cable used to connect between the equipment and the users ac power source should be 3-core (to IEC 227) rated 250 V ac at 8 amps, and have a minimum cross-sectional area of 1.0 mm per core. PAE recommends the use of polyvinyl chloride (PVC) insulated cable. The cable must be fitted with the IEC approved equipment connector (PAE part number 20-02030102) supplied with the receiver, and conform to the following specification:

q q If PVC insulated, be not lighter than ordinary polyvinyl chloride sheathed flexible cord according to IEC publication 227 (designation H05 VV-F, or H05 VVH2-F). If rubber insulated, be of synthetic rubber and not lighter than ordinary tough rubber-sheathed flexible cord according to IEC publication 245 titled Rubber Insulated Cables of Rated Voltages up to and Including 450/750 V (designation H05 RR-F). The T6R receiver is a Class 1 equipment. The ac supply cable should have a green-and-yellow protective earthing conductor electrically connected to the protective earthing terminal of the equipment connector and the mains plug. PAE recommends the ac supply cable is colour coded in accordance with the electrical appliance (colour code) regulations for the UK. That is:

q q q Section 1 Page 24 The core that is coloured green-and-yellow must be connected to the terminal in the plug that is marked with the letter E or by the earth symbol or coloured green-and-yellow. The core that is coloured blue must be connected to the terminal that is marked with the letter N or coloured black. The core that is coloured brown must be connected to the terminal that is marked with the letter L or coloured red. T6R General Information DC SUPPLY CONNECTION The receiver operates from either an ac, or a dc input supply. When both ac and dc are connected, operation from the ac supply takes priority; automatic change-over to the dc supply occurs if the ac supply fails. On restoration of the ac supply, the equipment reverts to ac operation. A dc input supply connector (see Fig. 1-5 on page 15) is fitted to the equipments rear panel. The recommended minimum rating of the dc supply cable is: 2-core having a cross-sectional area of 1.5 mm2 per core. The supply cable should be fitted with an XLR3 connector (PAE part number 20-01030106). CONNECTING AN ANTENNA The antenna feeder cable connects to the receivers rear panel N-type antenna connector (see Fig. 1-3 on page 14). SWITCHING ON When the installation is complete, the receiver should be switched on at the rear panel Power switch (see page 14). T6R General Information Section 1 Page 25 Intentionally Blank Section 1 Page 26 T6R General Information T6R Receiver User Guide Section 2 AM-Voice Mode T6R AM-Voice Mode Section 2 Page 1 Section 2 Contents Chapter 1. Chapter 2. Chapter 3. AM-Voice Mode Overview Introduction to AM-voice mode Operational Settings Basic Configuration Local Operation Remote Operation Configuration for Operation with MARC Specification RF Characteristics Modulation Characteristics Installation Introduction Connecting the Remote Facilities Connecting to MARC Equipment Chapter 4. Operational Settings Introduction Normal Operation Using the Scroll/Select Switch Screen Protocol Menu Lock Screen Notes for Setting Up the Receiver Front Panel Display for 25 kHz and 8.33 kHz Channel Spacing Line Level Setting To Enter and Exit Standby Mode To Enter Standby Mode To Exit Standby Mode AM-Voice Settings Procedure General Receiver Settings Selecting the Operating Frequency Allocating channel numbers to specified frequencies To Store Channel Frequencies To Recall Channel Frequencies To initiate an interruptive bit test To View BIT Pages and advise screen Elapsed time indicator displaying the receivers internal reference frequency screen Software versions screen Page 3 3 4 4 4 6 7 7 9 10 10 13 13 13 14 16 17 17 18 19 19 20 21 25 29 30 30 31 32 33 34 35 36 Section 2 Page 2 T6R AM-Voice Mode Chapter 1. AM-Voice Mode Overview This chapter provides an introduction to using the T6R receiver in AM-voice mode. INTRODUCTION TO AM-VOICE MODE In AM-voice mode the T6R receiver operates in the frequency range 118 to 136.975 MHz using 25 kHz or 8.33 kHz channel spacing. An internal loudspeaker, or headphones plugged into the front panel, allows the receiver to be used in local mode. Alternatively, rear panel connectors provide the interfaces for remote operation. The majority of operational settings can be selected from the front panel, or through a compatible control and data system such as the PAE multi-access remote control (MARC). A multi-channel feature of the receiver allows up to 100 frequency channels to be stored and recalled by channel number. OPERATIONAL SETTINGS Operational settings for the T6R receiver are configured at the front panel, through the VFP, or through an associated MARC system (or compatible control and data system). At the receiver, operational settings are selected and displayed using the front panel Scroll/Select switch and the LCD. The settings that can be selected are:

q Operating frequency q Selecting front panel frequency step size q Channel allocation and recall q Setting the line level q Setting the squelch level q Setting squelch defeat to on or off q Setting audio AGC to on or off q Setting the loudspeaker volume q Setting the LCD backlight q Setting receiver disable on or off q Setting the MARC baud rate q Setting squelch indication signal polarity q Setting the disable signal polarity q Setting the squelch defeat polarity q Setting the BIT initiate signal polarity q Setting the ready out signal polarity q Setting standby mode to on or off T6R AM-Voice Mode Section 2 Page 3 BASIC CONFIGURATION Fig. 2-1 shows the basic T6R receiver connections for AM-voice operation. If the receiver is part of a MARC system, or other compatible control and data system, refer to Configuration for Operation with MARC on page 6. Local Operation In its simplest configuration, the receiver can be operated in local mode. This involves using the built-in loudspeaker, or connecting a headset to the front panel Headset/Diagnostics connector. All operational settings are then selected using the Scroll/Select switch. Remote Operation For remote operation signals are connected from the receivers rear panel Facilities connector, through a suitable communication link, to the control equipment. Essential connections are the receivers audio output and a squelch indication (a choice of squelch indication signals are available). Other remote signals can be connected to suit the particular application. The remote signals are fully described in section 1 on page 17. In the basic configuration, the rear panel MARC and Computer Port connectors are not used. The front panel Reference connector is used to check the receivers internal reference frequency during scheduled maintenance. The front panel Headset/Diagnostics connector is used to connect a PC for maintenance purposes, or to use the VFP. Maintenance using a PC connected to the Headset/Diagnostics connector is outside the scope of this user guide. Full information is contained in the T6R maintenance handbook. Section 2 Page 4 T6R AM-Voice Mode T6R Receiver Antenna Connector Facilities Connector Reference Connector Headset/Diagnostics Connector Remote Signals Audio Squelch Indications Unregulated Supply RSSI Ready Indication Tape Output Squelch Defeat Signal Rx Disable BIT Interruptive Test Headset for local operation Frequency Counter for maintenance purposes PC for maintenance purposes Fig. 2-1. T6R Receiver - Basic Configuration T6R AM-Voice Mode Section 2 Page 5 CONFIGURATION FOR OPERATION WITH MARC When the T6R receiver is used with a MARC system or other compatible control and data system, the remote signals are connected through the rear panel MARC connector (see Fig. 2-2). In this configuration, the rear panel Facilities and Computer Port connectors are not used unless some auxiliary signals available at the Facilities connector are required. MARC RSE 2 Equipment Connector RSE 2 has 8 equipment connectors allowing up to 8 radios to be connected T6R Receiver Antenna Connector MARC Connector Reference Connector Headset/Diagnostics Connector Audio Squelch Indication Control Information Status Information Unregulated Supply Headset for Engineering Use PC for maintenance purposes Frequency Counter for maintenance purposes Fig. 2-2. T6R Receiver - Configuration for Use with MARC Section 2 Page 6 T6R AM-Voice Mode Chapter 2. Specification This chapter gives the receivers specification applicable to AM-voice operation. RF CHARACTERISTICS Channel spacing Sensitivity 25 kHz, or 8.33 kHz across the frequency band 118 to 136.975 MHz. Better than 1 m V PD (-107 dBm) for 10 dB (S+N)/N, or 12 dB SINAD ratio; both with ITU-T recommendation P.53 weighting. IF selectivity For 25 kHz channel spacing:

At 11 kHz from the centre frequency, the signal is not attenuated by more than 6 dB. At 25 kHz from the centre frequency the signal is attenuated by more than 80 dB. For 8.33 kHz channel spacing:

At 3.5 kHz from the centre frequency, the signal is not attenuated by more than 6 dB. At 8.33 kHz from the centre frequency, the signal is attenuated by more than 70 dB. At 25 kHz from the centre frequency, the signal is attenuated by more than 80 dB. For 25 kHz channel spacing, the variation in frequency response with reference to a 1 kHz signal, is within

+2 dB, -3 dB across the frequency range 300 to 3400 Hz. The response is better than -10 dB at 100 Hz, and better than -30 dB at 5 kHz. For 8.33 kHz channel spacing, the variation in frequency response, with reference to a 1 kHz signal, is within

+2 dB, -3 dB across the frequency range 350 to 2500 Hz. The response is better than -10 dB at 100 Hz, and better than -30 dB at 5 kHz. With a -47 dBm RF input, the receivers hum and noise is more than 45 dB below the signal level for a carrier modulated by a 1 kHz signal with a modulation index of 0.9. MODULATION CHARACTERISTICS Frequency response Hum and noise T6R AM-Voice Mode Section 2 Page 7 Distortion AGC Squelch Level control For RF input signals between -47 dBm and +10 dBm, the total harmonic distortion is less than 5% due to signals with a modulation index of 0.8 and within the frequency range 300 Hz to 3400 Hz. For received signals between -107 dBm and +10 dBm there is less than 3 dB change in audio output. The AGC attack time is less than 15 ms and the decay time is less than 50 ms. The receiver has a noise compensated carrier operated squelch with an adjustment range of -114 to -60 dBm, and provides greater than 60 dB of quieting. Attack time is <50 ms for a signal rising 10 dB above the squelch setting. Release time is <50 ms for a signal falling 10 dB below the squelch setting. Hysteresis 2 to 4 dB. An audio AGC ensures there is less than 1 dB change in audio output level when the modulation index is increased from m = 0.3 to m = 0.9. The audio AGC can be switched off from the front panel, through MARC, or the VFP. Section 2 Page 8 T6R AM-Voice Mode Chapter 3. Installation This chapter details the installation procedures that are applicable only to AM-voice operation. WARNING. LETHAL VOLTAGES!

The instructions given in this chapter involve connecting lethal voltages to the receiver. The instructions detailed in this chapter must be carried out only by suitably qualified personnel. WARNING. UNAUTHORIZED MODIFICATIONS!

Changes or modifications made to this equipment that are not expressly approved by Park Air Electronics, or parties authorized by Park Air Electronics, could void the users authority to operate the equipment. CAUTION. ESSDs!

The T6R receivers circuitry contains Electrostatic Sensitive Devices (ESSDs). Personnel must be aware of the precautions necessary to prevent damage to such devices. During installation all precautions necessary to prevent ESSD damage must be taken. INTRODUCTION The procedures in this chapter that allow a T6R receiver to be installed for AM-voice operation are:

q q Connecting remote facilities in non-MARC applications Connecting remote facilities to a MARC (or a compatible control and data system). T6R AM-Voice Mode Section 2 Page 9 CONNECTING THE REMOTE FACILITIES If the receiver is being used in the Basic Configuration (see Fig. 2-1 on page 5) remote signals are terminated on the rear panel Facilities connector CN5. For configurations where the T6R receiver is being used with a MARC system, or other compatible data and control system, this procedure should be ignored; instead, refer to Connecting to MARC Equipment. The remote facilities available at CN5 are listed in section 1 on page 17. Essential connections, unless the receiver is being used only in local mode, are the audio output (pins 2 and 3) and, usually, a squelch indication output. Make any other connections to CN5 as required. When making connections to the Facilities connector CN5, and in order not to compromise the receivers Electromagnetic Compatibility (EMC) users must:

q q Use a D-type connector that has a screened cover Use screened multi-way cable, with the cables screen connected to the Facilities connectors shell or body. Failure to comply with this instruction could result in non-compliance with the European Commission EMC Directive 89/336/EEC CONNECTING TO MARC EQUIPMENT If the receiver is being used with a MARC system, or compatible control and data system, remote connections are made through the rear panel MARC connector CN6 (see Fig. 2-2 on page 6). The pin-out of CN6 is shown in section 1 on page 18. If connecting to a MARC RSE 2 equipment, the connections between CN6 and one of RSE 2s Equipment Connectors is pin-to-pin as shown in table 2-1. When making connections to the Facilities connector CN6, and in order not to compromise the receivers Electromagnetic Compatibility (EMC) users must:

q q Use a D-type connector that has a screened cover Use screened multi-way cable, with the cables screen connected to the Facilities connectors shell or body. Failure to comply with this instruction could result in non-compliance with the European Commission EMC Directive 89/336/EEC Section 2 Page 10 T6R AM-Voice Mode Table 2-1 MARC Connector CN6 to RSE 2 Equipment Connector T6R Receiver RSE 2 Equipment Connector Pin Number Signal Name Pin Number Signal Name 1 2 3 4 5 6 7 8 9 Ground Line Out(+) Line Out (-) Squelch Indication Unregulated Supply Data In (+) Data In (-) Data Out (+) Data Out (-) Note ... 1 2 3 4 5 6 7 8 9 0 Volt Audio Line L1 Audio Line L2 Mute Unregulated Supply Input Data Out (+) Data Out (-) Data In (+) Data In (-) The squelch indication signal from the receiver connects to the RSE 2s mute connection. T6R AM-Voice Mode Section 2 Page 11 Intentionally Blank Section 2 Page 12 T6R AM-Voice Mode Chapter 4. Operational Settings This chapter details how the T6R receiver is set up for AM-Voice operation from the front panel. It also details how to set the receiver in and out of standby mode. The receiver can also be set up through a MARC system, or by using the VFP. Both of these methods are outside the scope of this handbook; users should refer to the MARC User Guide and the T6R Maintenance Handbook. INTRODUCTION Selecting most of the receivers operational settings is carried out using the front panel Scroll/Select switch and the LCD (see the illustration below). Table 2-2 on page 15 shows a list of the operational settings. No attempt to set up the receiver should be made until it has been installed as per the Installation Procedures given in section 1 of this user guide. Normal Operation During normal operation, the LCD displays the Main screen. This screen shows the operating frequency, the channel number (if the channel store facility is used) and displays a graphical representation of volume. The receivers loudspeaker and headset volume can be adjusted by rotating the Scroll/Select switch. If the receiver has been set to Standby mode, which is shown by the front panel STANDBY indicator being lit, the LCD is blanked. F r e q C h a n 1 2 3 . 0 0 0 M H z 1 V o l l l l l l l l l l l l l Using the Scroll/Select Switch The SCROLL/SELECT switch (referred to throughout this chapter as the Switch) is used to exit the Main screen and display the Options menu. Further use of the Switch displays various selection menus and allows the required parameters to be set. The switch has three actions: it can be turned clockwise, anti-clockwise, or momentarily pushed in. Note that during normal receiver operation, the Scroll/Select switch acts as a volume control. T6R AM-Voice Mode Section 2 Page 13 SCREEN PROTOCOL The following protocol is applicable to all screens described in this chapter. Main Screen During normal receiver operation, the Main screen, an example of which is shown below, is displayed. F r e q 1 2 3 . 0 0 0 M H z C h a n 1 V o l l l l I I I I I I I I I Switch Timeout

Back Exit Refers to the front panel Scroll/Select switch. The switch is turned clockwise to scroll through fields from left to right, and from top to bottom. The switch is turned anti-clockwise to scroll through fields from right to left, and from bottom to top. The switch is pressed to make a selection. If during any setting up procedure the Scroll/Select switch is not operated for 30 seconds, the display returns to the Main screen. If editing any parameter has not been completed, the receiver stays on the original setting. Indicates more fields are available other than those currently displayed. To access those fields, turn the switch clockwise through the last displayed field. Indicates more fields are available other than those currently displayed. To access those fields, turn the switch anti-clockwise through the first displayed field. When Back is selected, you are returned to the previous menu. When Exit is selected, you are returned to the Main screen. Section 2 Page 14 T6R AM-Voice Mode Table 2-2 Operational Settings Parameter Adjustment Range Factory Further Default Setting Reference Menu lock screen Locked or unlocked Unlocked Page 16 To enter Standby mode On or Off To exit Standby mode

Off

Page 19 Page 20 Set mode of operation AM-voice AM-voice Squelch level Squelch defeat Audio AGC

-60 dBm to -114 dBm

-107 dBm On or Off On or off Off On Front panel frequency step size 8.33, 25 kHz, or both 25 kHz Loudspeaker volume 0 to 100%, or Off 30%

LCD backlight timeout 15 s to 120 s, Off, or On 30 s Receiver disable On or off Off Line level

-30 dBm and 0 dBm

-13 dBm MARC port baud rate 300 to 9600 baud 9600 baud Squelch output signal polarity Positive or Negative Disable input signal polarity Positive or Negative Squelch defeat input signal polarity Positive or Negative BIT initiate input signal polarity Positive or Negative Ready output signal polarity Positive or Negative Pos Pos Pos Pos Pos Part of AM Voice Settings Procedure starting on page 21. Part of General Receiver Settings Procedure starting on page 25. Selecting the operating frequency 118.000 to 136.975 MHz 118.00 MHz Page 29 Store frequency channels Recall frequency channels 1 to 100 1 to 100 Initiate a BIT test View BIT pages and advise screens Elapsed time indication Display internal reference frequency screen Software versions

Page 30 Page 31 Page 32 Page 33 Page 34 Page 35 Page 36 T6R AM-Voice Mode Section 2 Page 15 MENU LOCK SCREEN A security facility available only from the VFP allows the receivers front panel to be locked. When this facility is active, no operational settings can be made from the front panel until an unlock command is sent from the VFP. The following screen is displayed when lock is active, and the front panel switch is pressed. S E C U R I T Y M E S S A G E S y s t e m L o c k e d O K To exit the system lock screen:

q Turn the switch to highlight OK, then press the switch. You are returned to the main screen. or, q Wait for the 30 second timeout to expire. You are returned to the main screen. Section 2 Page 16 T6R AM-Voice Mode NOTES FOR SETTING UP THE RECEIVER The following notes should be read before setting up the receiver. They advise on the special frequency display when using 8.33 kHz channel spacing, and give guidance on the optimum line level. Front Panel Display for 25 kHz and 8.33 kHz Channel Spacing When setting the operating frequency of the receiver and 8.33 kHz channel spacing is selected, the displayed frequency differs from the actual channel frequency. Table 2-3 shows the pattern used for 25 kHz and 8.33 kHz spaced channel frequencies from 118.000 MHz to 118.1916 MHz. The pattern is the same for any frequency within the receivers frequency range. The display conforms to ICAO convention for 8.33 kHz operation. Table 2-3 25 kHz and 8.33 kHz Channel Spacing Displays Actual Frequency

(to 4 decimal places) 118.0000 MHz 118.0000 MHz 118.0083 MHz 118.0166 MHz 118.0250 MHz 118.0250 MHz 118.0333 MHz 118.0416 MHz 118.0500 MHz 118.0500 MHz 118.0583 MHz 118.0666 MHz 118.0750 MHz 118.0750 MHz 118.0833 MHz 118.0916 MHz 118.1000 MHz 118.1000 MHz 118.1083 MHz 118.1166 MHz 118.1250 MHz 118.1250 MHz 118.1333 MHz 118.1416 MHz 118.1500 MHz 118.1500 MHz 118.1583 MHz 118.1666 MHz 118.1750 MHz 118.1750 MHz 118.1833 MHz 118.1916 MHz Channel Spacing 25 kHz 8.33 kHz 8.33 kHz 8.33 kHz 25 kHz 8.33 kHz 8.33 kHz 8.33 kHz 25 kHz 8.33 kHz 8.33 kHz 8.33 kHz 25 kHz 8.33 kHz 8.33 kHz 8.33 kHz 25 kHz 8.33 kHz 8.33 kHz 8.33 kHz 25 kHz 8.33 kHz 8.33 kHz 8.33 kHz 25 kHz 8.33 kHz 8.33 kHz 8.33 kHz 25 kHz 8.33 kHz 8.33 kHz 8.33 kHz Displayed Frequency at Receivers Front Panel 118.000 MHz 118.005 MHz 118.010 MHz 118.015 MHz 118.025 MHz 118.030 MHz 118.035 MHz 118.040 MHz 118.050 MHz 118.055 MHz 118.060 MHz 118.065 MHz 118.075 MHz 118.080 MHz 118.085 MHz 118.090 MHz 118.100 MHz 118.105 MHz 118.110 MHz 118.115 MHz 118.125 MHz 118.130 MHz 118.135 MHz 118.140 MHz 118.150 MHz 118.155 MHz 118.160 MHz 118.165 MHz 118.175 MHz 118.180 MHz 118.185 MHz 118.190 MHz T6R AM-Voice Mode Section 2 Page 17 Line Level Setting The line level setting displayed on the front panel is equivalent to the average speech level with a peak-to-average ratio of 13 dB. This corresponds to the level specified for the lines. When testing the receiver using a signal generator with sine wave modulation, the line output level will be 10 dB above the line level setting. Table 2-4 Relationship between Line Level, Output Levels with Average Speech Line Level Setting

(Front Panel Setting)

(dBm) and Sine Wave Output Level with Average Speech

(dBm) Output Level with Sine Wave

(dBm) 0

-5

-10

-15

-20

-25

-30 0

-5

-10

-15

-20

-25

-30

+10

+5 0

-5

-10

-15

-20 Section 2 Page 18 T6R AM-Voice Mode TO ENTER AND EXIT STANDBY MODE Standby mode is a power saving feature that can be used for non-operational receivers. When in standby mode, most of the receivers circuits are inactive, the LCD is blanked, and there is no audio output. To Enter Standby Mode To put the receiver into standby mode, use the following procedure. 1. From the Main screen, press the switch to display the Options menu. Ensure that Configure is highlighted. Press the switch. F r e q u e n c y C h a n n e l C o n f i g u r e B I T E x i t 2. Ensure the Configure menu is displayed. Turn the switch until Standby is highlighted, then press the switch. S e t t i n g s S / W V e r s i o n s S t a n d b y B a c k E x i t 3. Check that the Standby menu is displayed. Turn the switch until Yes is highlighted, then press

[To abandon this procedure, select No instead of Yes and then press the switch.]

the switch. P u t r a d i o i n t o S t a n d b y m o d e

Y E S N O 4. Check that the LCD blanks, and the front panel STANDBY indicator lights. 5. The receiver is now in standby mode. To exit standby, see the next procedure. T6R AM-Voice Mode Section 2 Page 19 To Exit Standby Mode Standby mode is indicated by the front panel STANDBY indicator being lit and the LCD being blanked. To exit this mode, use the following procedure. 1. Press the switch and check that the Exit menu is displayed. E x i t S t a n d b y M o d e Y E S N O 2. Turn the switch until YES is highlighted, then press the switch.

[To abandon this procedure, select No instead of Yes and then press the switch.]

F r e q 1 2 3 . 0 0 0 M H z V o l l l l l l l l l l l l l 3. Check that the Main screen is displayed and that the front panel STANDBY indicator is unlit. 4. The receiver is now ready for normal use. Section 2 Page 20 T6R AM-Voice Mode AM-VOICE SETTINGS PROCEDURE During this procedure, the following parameters, applicable to AM-voice operation, will be set:

q Mode of operation q Squelch level q Squelch defeat on or off q Audio AGC on or off q Front panel frequency step size q Loudspeaker volume 1. From the Main screen, press the switch to display the Options menu. Turn the switch until Configure is highlighted. Press the switch. F r e q u e n c y C h a n n e l C o n f i g u r e B I T E x i t Options Menu 2. Ensure the Configure menu is displayed. Turn the switch until Settings is highlighted, then press the switch. S e t t i n g s S / W V e r s i o n s 3. Check that the Function menu is displayed and turn the switch until Mode is highlighted. Press the switch. S t a n d b y B a c k E x i t Configure Menu M o d e R e f e r e n c e F r e q D i s p l a y

Function Menu 4. Selecting AM-Voice Operation. Check that AM Voice is displayed. If any other mode is displayed, press the switch until AM Voice is shown. M o d e :

A M V o i c e S e t t i n g s Turn the switch clockwise until Settings is highlighted. Then press the switch to display the mode specific Settings menu. C a n c e l O K T6R AM-Voice Mode Section 2 Page 21 5. Setting the Squelch Level.

[Factory default setting: -107 dBm]

The receivers squelch level can be set between -60 dBm and -114 dBm. To set the squelch level, ensure Squelch is highlighted. Press the switch. Turn the switch clockwise or anti-clockwise to increase or decrease the value. When the required value is displayed, press the switch. Turn the switch clockwise to highlight Sql Defeat. S q u e l c h

- 1 0 7 d B m S q l D e f e a t O F F A u d i o A G C O N

Mode Specific Settings Menu 6. Setting Squelch Defeat to On or Off.

[Factory default setting: Off]

The receivers squelch facility can be switched on or off. Ensure that Sql Defeat is highlighted. Press the switch to toggle between On and Off. On = Squelch Defeated. The receivers squelch circuit does not operate and the front panel Receive indicator stays lit. S q u e l c h

- 1 0 7 d B m S q l D e f e a t O F F A u d i o A G C O N

Off = Squelch facility enabled. An audio output is heard only when a signal greater than the squelch level is received. When the required setting is highlighted, turn the switch clockwise to highlight Audio AGC. 7. Setting the Audio AGC.

[Factory default setting: On]

The receivers Audio AGC facility can be switched On or Off. S q u e l c h

- 1 0 7 d B m S q l D e f e a t O F F When set to on, the audio output level remains constant for received signal modulation depths greater than 30%. A u d i o A G C O N

to off, When set is proportional to the received signal modulation depth. the audio output level To make the required setting, ensure Audio AGC is highlighted. Press the switch to toggle between On and Off. When the required setting is highlighted, turn the switch clockwise to highlight Channel Spacing. Section 2 Page 22 T6R AM-Voice Mode 8. Setting the Front Panel Frequency Step Size.

[Factory default setting: 25 kHz]

The receivers channel spacing can be 25 kHz, or 8.33 kHz. The radio automatically sets the correct channel spacing for the frequency that is entered at the front panel. This setting, which is only for the users convenience, alters front panel frequency step size. q If all channels to be selected or stored are 25 kHz spaced channels, then 25 should be selected. q If all channels to be selected or stored are 8.33 kHz spaced channels, then 8.3 should be selected. q If a mixture of the two are required, both 25 and 8.3 should be selected. To select the required spacing, ensure that Channel Spacing is highlighted and press the switch. C h a n n e l S p a c i n g L o u d s p e a k e r B a c k E x i t

Check that displayed and that Spacing is highlighted. the Channel Spacing menu is S p a c i n g 2 5 k H z Press the switch to change between 25 kHz, 8.3 kHz, and both. When the required value is displayed, turn the switch to highlight OK, then press the switch again. You will be returned to the Mode Specific Settings menu. 8 . 3 k H z C a n c e l O K Channel Spacing Menu (Both Selected) T6R AM-Voice Mode Section 2 Page 23 9. Setting the Loudspeaker/Headset Volume.

[Factory default setting: 30% Volume; Loudspeaker On]

The receivers loudspeaker and headset volume can be set, and the speaker can be switched on or off during this procedure. Turn the switch clockwise until Loudspeaker is highlighted, then press the switch. Ensure that displayed and that Volume is highlighted. the Loudspeaker menu is or volume, Press the switch. Turn the switch clockwise to increase to decrease volume. When the required value

(0 to 100%) is displayed, press the switch.Turn the switch clockwise until OK is highlighted, then press the switch. anti-clockwise C h a n n e l S p a c i n g L o u d s p e a k e r B a c k E x i t

To turn the loudspeaker on and off, highlight Speaker and press the switch to toggle between On and Off. When the required setting is displayed, turn the switch to highlight OK, then press the switch. You are returned to the Mode Specific Settings menu. V o l u m e S p e a k e r 0 3 0 %

O N O K 10. To exit the AM-Voice Settings Procedure, turn the switch to highlight Exit, then press the switch. You are returned to the Main screen. When this procedure is complete, go to the General Receiver Settings procedure starting on the next page. Section 2 Page 24 T6R AM-Voice Mode GENERAL RECEIVER SETTINGS During this procedure, the following parameters will be set:

q LCD backlight q Line level q Disable on or off q MARC baud rate q Squelch output signal polarity q Disable input signal polarity q Squelch defeat polarity q BIT initiate signal polarity q Ready output signal polarity 1. From the Main screen, press the switch to display the Options menu. Turn the switch until Configure is highlighted. Press the switch. F r e q u e n c y C h a n n e l C o n f i g u r e B I T E x i t Options Menu 2. Ensure the Configure menu is displayed. Turn the switch until Settings is highlighted, then press the switch. S e t t i n g s S / W V e r s i o n s S t a n d b y B a c k E x i t Configure Menu 3. Setting the LCD Backlight.

[Factory default setting: 30 s]

Check that the Settings menu is displayed and turn the switch until Display is highlighted. Press the switch. to off, The LCDs backlight can be set permanently on, or timed to stay on for a period between 15 and 120 seconds

(adjustable in 15 second steps) after the Scroll/Select switch was last operated. Ensure the Backlight menu is displayed and Backlight is highlighted. Press the switch. Turn the switch until the required setting is displayed, then press the switch. Turn the switch clockwise until OK is highlighted, then press the switch. You are returned to the Settings menu. M o d e R e f e r e n c e F r e q D i s p l a y

Settings Menu B a c k l i g h t 0 3 0 s C a n c e l O K T6R AM-Voice Mode Section 2 Page 25 4. Setting Disable On or Off.

[Factory default setting: Off]

Receiver disable can be set to either On or Off. When set to on, the receivers audio output is disabled. When set to off, audio is available through the internal loudspeaker, the headset, or through the remote audio lines. From the Settings menu, clockwise until Disable is highlighted, press the switch. turn the switch then D i s a b l e L i n e L e v e l M A R C

Check that the Disable menu is displayed and Disable is highlighted. Pressing the switch toggles between On and Off. When the correct setting is displayed turn the switch clockwise to highlight OK, then press the switch. You are returned to the Settings menu. D i s a b l e C a n c e l O N O K 5. Setting the Line Level.

[Factory default setting: -13 dBm]

The audio line output level can be set to any value between -30 dBm and 0 dBm. Some notes regarding the optimum line level are given on page 18. turn the switch From the Settings menu, clockwise until Line Level is highlighted, then press the switch. D i s a b l e L i n e L e v e l M A R C

Check that the Line Level menu is displayed and that Line Lvl is highlighted, then press the switch. L i n e L v l

- 1 3 d B m Turn the switch clockwise or anti-clockwise to increase or decrease the value. When the required value is displayed, press the switch. Turn the switch to highlight OK and then press the switch. You are returned to the Settings menu. C a n c e l O K Section 2 Page 26 T6R AM-Voice Mode 6. Setting the MARC Baud Rate.

[Factory default setting: 9600]

The baud rate must be set when the T6R receiver is connected to a MARC system (or other compatible data and control system). The rate can be set to 300, 600, 1200, 2400, 4800, or 9600 baud. From the Settings menu, clockwise until MARC is highlighted, press the switch. turn the switch then D i s a b l e L i n e L e v e l M A R C

Ensure that the MARC menu is displayed and that Baud Rate is highlighted. B a u d R a t e 9 6 0 0 Press the switch. Turn the switch until the required value is displayed, then press the switch. Turn the switch clockwise until OK is highlighted, then press the switch. You are returned to the Settings menu. 7. Polarity Settings. C a n c e l O K The polarity of the following input and output signals is set using the Polarity menu:

q q q q q Squelch output signal Disable input signal Squelch defeat input signal BIT initiate input signal Ready output signal. P o l a r i t y B a c k E x i t

To establish the required polarity for the input and output signals, refer to table 2-5. From the Settings menu, turn the switch until Polarity is highlighted. Then press the switch to display the Polarity menu. To set the required polarity, turn the switch to highlight the required parameter, then press the switch to toggle between NEG and POS. When all polarities have been set, highlight Back, and press the switch to return to the Settings menu. D i s a b l e S q u e l c h O u t S q u e l c h D e f B I T I n i t R e a d y O u t B a c k E x i t

Polarity Menu T6R AM-Voice Mode N E G P O S N E G

N E G P O S Section 2 Page 27 Table 2-5 Signal Polarities Signal Description State when Polarity is State when Polarity is set to NEG set to POS Squelch Disable Squelch defeat BIT initiate This grounding output, when active, indicates a signal above the squelch threshold being received. is disables An input signal that, when active, the receivers audio output. This is a TTL input pulled-up to 5 V. to the An input signal receiver that, when active, disables the receivers squelch circuits. This is a TTL input pulled-up to 5 V. Output is 0 V during no signal condition, and high impedance when a signal is received. Output is high impedance during no signal condition, and 0 V when a signal is received. A 5 V input disables the receiver. A 0 V input disables the receiver. A 5 V input defeats the squelch function. A 0 V input defeats the squelch function. input signal An that initiates a BIT interruptive test. This is a TTL input pulled-up to 5 V. The input signal must be active for a minimum of 300 ms; the signal cannot then be activated again for at least 3 seconds. A 5 volt input initiates a BIT test. A 0 volt input initiates a BIT test. Ready output This output is active when the radio is ready for use and no faults have been detected the BIT circuitry. It is a grounding output. by a is Output impedance when receiver 0 volt when not ready. high the is ready, and Output is 0 volt when the receiver is ready, and a high impedance when not

ready. Squelch relay The squelch relay circuit operates when a signal, above the squelch threshold, is received. This circuit can switch voltages in the range -50 to +50 V (100 mA maximum) and can be configured to be normally open or normally closed. The configuration follows the polarity of the squelch indication signal as follows:

When the squelch indication polarity is POS, the squelch relay is configured as normally open. When the squelch indication polarity is NEG, the squelch relay is configured as normally closed. 8. To exit the General Receiver Settings procedure, turn the switch to highlight Exit, then press the switch. You are returned to the Main screen. When this procedure is complete, go to Setting the Operating Frequency procedure starting on the next page. Section 2 Page 28 T6R AM-Voice Mode SELECTING THE OPERATING FREQUENCY To set the receivers operating frequency, use the following procedure. If a frequency is to be stored as one of the 100 available preset channels, ignore this procedure and go to Allocate Channel Numbers to Specified Frequencies on page 30. Before setting the operating frequency, the required front panel frequency step size should be set (see page 23). 1. From the Main screen, press the switch to display the Options menu. Ensure that Frequency is highlighted. Press the switch. F r e q u e n c y C h a n n e l C o n f i g u r e B I T E x i t 2. Ensure the Set Frequency menu is the MHz digits are displayed and that highlighted. Press the switch. 1 2 1 . 5 0 0 M H z C a n c e l O K 3. Turn the switch clockwise to increase frequency, or anti-clockwise to decrease frequency. The MHz value increments/decrements in 1 MHz steps. Stop when the required value is shown. Press the switch. 4. Turn the switch clockwise to highlight the kHz digits and press the switch. Turn the switch clockwise to increase frequency, or anti-clockwise to decrease frequency (note that continuous scrolling of the kHz value will increment or decrement the MHz value). Stop when the required value is shown. Press the switch. Note that if 25 kHz channel spacing is selected, the kHz value increments/decrements in 25 kHz steps; if 8.33 kHz channel spacing is selected, the kHz value increments/decrements in the pattern detailed in Table 2-3, 25 kHz and 8.33 kHz Channel Spacing Displays on page 17. If both is selected, the display shows the 25 kHz and 8.33 kHz channels. 5. Turn the switch clockwise until either Cancel or OK is highlighted. Then press the switch. If cancel is selected, the new frequency entered in this procedure is ignored. If OK is selected, the receiver operates on the new frequency. T6R AM-Voice Mode Section 2 Page 29 ALLOCATING CHANNEL NUMBERS TO SPECIFIED FREQUENCIES Up to 100 frequency channels can be stored in the receiver. Use the following procedure to allocate frequency channels. The process of allocating frequency channels can be simplified by using the VFP. The VFP software is contained in the T6R receivers maintenance kit. To Store Channel Frequencies Use the following procedure to allocate frequency channels. 1. From the Main screen, press the switch to display the Options menu. Turn the switch until Channel is highlighted. Press the switch. F r e q u e n c y C h a n n e l C o n f i g u r e 2. Ensure the Channel menu is displayed. is highlighted. Turn the switch until Set Press the switch. B I T E x i t C h 0 0 7 1 2 3 . 4 5 0 M H z R e c a l l S e t B a c k 3. Ensure the Channel screen is displayed and turn the switch until the channel number is highlighted. Press the switch, then turn the switch until the required channel number is displayed. When it is, press the switch. C h 0 0 1 1 1 9 . 1 0 0 M H z R e c a l l S t o r e S t o r e a n d E n d 4. Turn the switch to highlight the MHz value, the press the switch. Turn the switch until the required value is displayed, then press the switch. Repeat for the kHz value. C h 0 0 1 1 1 9 . 1 0 0 M H z R e c a l l S t o r e S t o r e a n d E n d 5. When the correct frequency the displayed channel number is displayed, turn the switch until Store is highlighted, then press the switch. for 6. Repeat steps 3 to 5 for all frequency channels that are to be stored. When the required number of frequency channels have been stored, highlight Store and End and press the switch. You will be returned to the Main screen. Section 2 Page 30 T6R AM-Voice Mode To Recall Channel Frequencies Frequency channels that have been stored in the receiver can be recalled by channel number as follows. 1. From the Main screen, press the switch to display the Options menu. Turn the switch until Channel is highlighted. Press the switch. F r e q u e n c y C h a n n e l C o n f i g u r e B I T E x i t 2. Ensure the Channel menu is displayed. Turn the switch until the channel number is highlighted. Press the switch. Turn the switch until the required channel number is displayed. Then press the switch. C h 0 0 7 1 2 3 . 4 5 0 M H z R e c a l l S e t B a c k 3. Turn the switch until Recall is highlighted, then press the switch. C h 0 0 7 1 2 3 . 4 5 0 M H z R e c a l l S e t B a c k 4. The Main screen will then be displayed showing the receivers selected channel number and corresponding operating frequency. F r e q 1 2 3 . 4 5 0 M H z C h a n P w r 7 T6R AM-Voice Mode Section 2 Page 31 TO INITIATE AN INTERRUPTIVE BIT TEST Use the following procedure to initiate an interruptive BIT test from the receivers front panel. 1. From the Main screen, press the switch to display the Options menu. Turn the switch until BIT is highlighted. Press the switch. 2. Ensure the BIT menu is displayed. Turn the switch until BIT Initiate is highlighted, then press the switch. F r e q u e n c y C h a n n e l C o n f i g u r e B I T E x i t B I T I n i t i a t e B I T V i e w E T I 0 0 1 2 3 : 5 9 B a c k E x i t 3. During the test, which takes approximately the Testing screen is two seconds, displayed. T e s t i n g P l e a s e W a i t 4. When the test has finished, check that the receivers front panel Alarm indicator is not lit. After a BIT test, BIT screens are automatically displayed. The screens are shown on the next page. Section 2 Page 32 T6R AM-Voice Mode TO VIEW BIT PAGES AND ADVISE SCREEN Use the following procedure to view the BIT page displays. Note that after a BIT interruptive test, the BIT screens are automatically displayed. 1. From the Main screen, press the switch to display the Options menu. Turn the switch until BIT is highlighted. Press the switch. F r e q u e n c y C h a n n e l C o n f i g u r e B I T E x i t 2. Ensure the BIT menu is displayed. Turn the switch until BIT View is highlighted, then press the switch. B I T I n i t i a t e B I T V i e w 3. A series of pages is shown displaying Some parameters. certain examples are shown here. receiver A full list of BIT screens along with appropriate explanations is given in the T6R receiver maintenance handbook. 4. Note that the last BIT screen allows Advise to be highlighted and selected by pressing the switch. If any BIT faults have been detected, the advise screen recommends the remedial action, in order of priority, to be taken. Further detail regarding the Advise screen is given in the T6R receiver maintenance handbook. B a c k E x i t A C D C S u p p l y S u p p l y S u p p l y O N O F F 2 4 V

Example BIT Screen S y n t h L o c k P A S S S e n s i t i v i t y P A S S S e n s .

- 1 0 7 d B m

Example BIT Screen A d v i s e B a c k

Last BIT Screen P l e a s e C h e c k 1 : R x R F 2 : D S P

Example Remedial Advise Screen T6R AM-Voice Mode Section 2 Page 33 ELAPSED TIME INDICATOR An elapsed time indicator (ETI) shows the number of hours the receiver has been powered up since manufacture. To view the ETI:

1. From the Main screen, press the switch to display the Options menu. Turn the switch until BIT is highlighted. Press the switch. 2. ETI can be seen measured in hours and minutes. F r e q u e n c y C h a n n e l C o n f i g u r e B I T E x i t B I T I n i t i a t e B I T V i e w E T I 0 0 1 2 3 : 5 9 B a c k E x i t Section 2 Page 34 T6R AM-Voice Mode DISPLAYING THE RECEIVERS INTERNAL REFERENCE FREQUENCY SCREEN Caution!

This procedure is included only for informational purposes. The reference frequency setting must not be altered unless following the procedure given in the T6R maintenance handbook. External test equipment is required to set this parameter. Failure to comply with this caution may render the receiver inoperable. To display the receivers internal reference frequency screen, use the following procedure. 1. From the Main screen, press the switch to display the Options menu. Turn the switch until Configure is highlighted. Press the switch. F r e q u e n c y C h a n n e l C o n f i g u r e B I T E x i t 2. Ensure the Configure menu is displayed. Turn the switch until Settings is highlighted, then press the switch. S e t t i n g s S / W V e r s i o n s 3. Check that the Function menu is displayed and turn the switch until Reference Freq is highlighted. Press the switch. 4. Ensure the Reference menu is displayed. 5. To exit the screen, wait for 30 seconds when the display automatically reverts to the Main screen, or select Cancel. S t a n d b y B a c k E x i t M o d e R e f e r e n c e F r e q D i s p l a y

R e f F r e q 5 0 . 0 %

C a n c e l O K T6R AM-Voice Mode Section 2 Page 35 SOFTWARE VERSIONS SCREEN The software versions screen allows the user to view the version of various software modules installed in the receiver. To view the software versions, use the following procedure. 1. From the Main screen, press the switch to display the Options menu. Ensure that Configure is highlighted. Press the switch. F r e q u e n c y C h a n n e l C o n f i g u r e B I T E x i t Options Menu 2. Ensure the Configure menu is displayed. Turn the switch until S/W Versions is highlighted, then press the switch. S e t t i n g s S / W V e r s i o n s S t a n d b y B a c k E x i t Configure Menu 3. Check the Software Versions screen is displayed. Select Boot, Flash, or Fills and press the switch to display the installed version. The example shows the Boot software. B o o t F l a s h F i l l s B a c k E x i t Software Versions Screen 4. Select OK, then press the switch to return to the Software Versions screen. View the other software modules as required. B o o t V e r s i o n S 0 2 7 1 V 0 0 0 1 O K Boot Version Screen Section 2 Page 36 T6R AM-Voice Mode

P A R K A I R E L E C T R O N I C S T 6 R V H F R E C E I V E R Digital Multimode Receiver Description Control of receiver operating parameters can be effected locally using a menu driven front panel LCD or remotely via serial ports on the rear panel. All receiver adjustments are under software control and can be accessed externally avoiding any necessity to remove covers during the operational life of the equipment. Should software updates be required to support new modulation modes in the future, these can be simply effected via a front panel diagnostic port or remotely via rear panel serial ports. The T6R has comprehensive BIT which monitors both static

(supplies etc) and dynamic (S+N/N, etc) parameters. A novel technique provides an accurate assessment of receiver sensitivity using BIT. Results can be viewed on the front panel LCD and are summarised via READY and ALARM indicators. All BIT data is available for remote monitoring via the serial ports and receivers can be readily networked for remote monitoring using PAE MARC or similar systems. The receiver is a compact 2U 19 rack mounted unit. Power can be 110/220 VAC or 24/28 VDC, with automatic switching to DC in the event of an AC failure. Both inputs are fully filtered and protected. F E A T U R E S Analogue and Digital programmable modulation modes AM voice with 25 kHz and 8.33 kHz channel spacing AM-MSK for Mode 1 (ACARS) D8PSK for Mode 2 (CSMA) and Mode 3 (TDMA) Exceptional dynamic range and co-location performance Compact 2U high rack mounting package Class leading RF performance Static and dynamic BIT The T6 Series represent the latest generation of Park Air ATC radios which are designed for professional applications in airport and en-route centres. The T6 Series fulfils both analogue (AM) modulation and the future digital (D8PSK) modes, which are being planned by ICAO. The T6 Series makes extensive use of advanced DSP (digital signal processing) technology to enable the transition from analogue to digital modulation modes to be made via software upgrade. Investment in radio systems is thereby pro-

tected against obsolescence as new digital modulation waveforms are introduced. The T6R operates in the VHF aviation band and provides both 25KHz and 8.33KHz channel spacing. A 100 channel memory is incorporated for recall of pre-set frequency and operating modes in multichannel applications. All demodulation is implemented using DSP algorithms, which provide consistent long term performance. D8PSK digital modula-

tion waveforms require high performance demodulators to ensure reliable synchronisation and low BER (bit error rate) at low signal levels. The T6R employs specially developed algo-

rithms allied to high performance RF circuitry to ensure optimum performance in this critical area. P A R K A I R E L E C T R O N I C S P A R K A I R E L E C T R O N I C S T 6 R V H F R E C E I V E R Digital Multimode Receiver Specification General Characteristics Frequency range:

117.975 to 136.975 MHz Channel spacing:

25 KHz and 8.333 KHz Programmable Channels 100 Frequency error:

1 ppm Modulation mode AM voice AM-MSK D8PSK Mode 2 and Mode 3 Power supplies:

ac: 110/120/220/240 V (10%), 45 to 65 Hz

<75 VA max dc: 21.4 to 32 V <2 A Environmental:

Operating: -20 to +55 degrees C Storage: -30 to +70 degrees C EMC/EMI: 89/336/EEC Weight/Dimensions Width: 483 mm (19 inches) Height: 2U/89 mm (3.5 inches) Depth: 419 mm (16.5 inches) Weight: 6kg Front Panel Facilities:

A rotary encoder and back lit 4-line LCD provide simple menu driven control of all receiver operating parame-

ters and BIT functions LED indicators for standby, ready, alarm and receive Combined headphone and diagnostic port connector Recessed co-axial connector for monitoring internal ref-

erence oscillator Loudspeaker Rear Panel Facilities:

Antenna: N-type female connector Supply connectors ac and dc supply connectors with associated fuses Facilities connector 15-way D-type includes audio, control, and BIT con-

nections Data connector 25-way D-type used to link receiver to control comput-

er when operating in digital modes. Provides two RS422 synchronous HDLC interfaces for status/ control and transmission data plus real time data and timing for TDMA. Message protocol and packet structures con-

form to ICAO/VDL SARPS requirements. MARC connector 9-way D-type provides independent connection of audio/serial control data to MARC remote control and monitoring systems. RF Characteristics Sensitivity AM -107 dBm for 10 dB S+N/N D8PSK -103dBm for 1x10-3 BER (without FEC) Synchronisation Probability D8PSK 0.999 for -103 dBm signal Selectivity 25 KHz channels 11 KHz for 6 dB 25 KHz for 80 dB 8.33 KHz channels 3.5 KHz for 6 dB 8.33 KHz for 70 dB Spurious signal suppression

<2 MHz from carrier -80 dB

>2 MHz from carrier -100 dB Intermodulation

>75 dB for signals >100 KHz from carrier Cross Modulation

-10 dBm for signals >1% from carrier Modulation Characteristics (AM) Response 25KHz channel spacing:

300 Hz to 3.4 KHz 3 dB ref 1 KHz

>20 dB attenuation at 100 Hz

>30 dB attenuation at 5 KHz Response 8.33KHz channel spacing:

350 Hz to 2.5KHz 3 dB ref 1 KHz

>20 dB attenuation at 100 Hz

>25 dB attenuation at 5 KHz Distortion:

<5% THD at 80% modulation AGC:

<3 dB change in audio output for RF signals between -

107 dBm and +10 dBm

<1 dB change in audio output for modulation depth change between 30% and 90%

Mute:

Noise compensated, range <6 to >16 dB S+N/N Audio outputs 600 ohm balanced line adjustable -20 dBm to +10 dBm Front panel loudspeaker 1 W nominal P A R K A I R E L E C T R O N I C S UK HEAD OFFICE: Northfields, Market Deeping, Peterborough, PE6 8UE, England. Tel + 44 1778 345434 Fax + 44 1778 341286 USA: Tel +1 410 349 8629 Fax +1 410 349 1846 FAR EAST: Tel +603 706 4898 Fax +603 706 4775 Email: sales@parkair.co.uk Web site: www.parkair.co.uk Park Air Electronics Ltd is a subsidiary of Northrop Grumman