SD-164 Data Radio User Instruction Manual FCC RF Exposure Compliance Requirements -
The Federal Communications Commission (FCC), with its action in General Docket 93-62, November 7, 1997, has adopted a safety standard for human exposure to Radio Frequency (RF) electromagnetic energy emitted by FCC regulated equipment. Topaz3 / Maxon subscribes to the same safety standard for the use of its products. Proper operation of this radio will result in user exposure far below the Occupational Safety and Health Act (OSHA) and Federal Communications Commission limits. Antennas used for this transmitter must not exceed an antenna gain of 7dBd. The radio must be used in config-
urations with a maximum operating duty factor not exceeding 50%, in typical push-to-talk configurations. This radio is approved for use by the general population in an uncontrolled environment. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 49cm from all persons, must not be co-located or operating in conjunction with asny other antenna or transmitter. CAUTION - DO NOT transmit for more than 50% of total radio use time (50% duty cycle). Transmitting more than 50% of the time can cause FCC RF exposure compliance requirements to be exceeded. The radio is transmitting when the TX icon on the radio display is illuminated. You can cause the radio to transmit by pressing the P-T-T button on the radios microphone. Users must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance. NOTE: This radio operates in FCC regulated frequency bands. All radios must be licensed by the FCC before use. Because this radio contains a transmitter, Federal law prohibits unauthorized use or adjustments of this radio. This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. Safety CAUTION - DO NOT operate the transmitter of any radio unless all RF connectors are secure and any open connectors are properly terminated. CAUTION - DO NOT operate the radio near electrical blasting CAUTION - All equipment must be properly grounded for safe WARNING - DO NOT allow children to operate transmitter - equipped radio equipment. WARNING - All equipment should be serviced by a qualified technician. WARNING - It is mandatory that radio installations in vehicles fueled by liquefied petroleum gas conform to the following caps or in an explosive atmosphere. operation. standard: National Fire Protection Association Standard NFPA 58 applies to radio installations in vehicles fueled by liquefied petroleum (LP) gas with LP gas container in the within the interior of the vehicle. This standard requires that:
trunk or other sealed-off space 1. Any space containing radio equipment shall be isolated by a seal from the space in which the LP gas container and its fittings are located. 2. Remote (outside) filling connections shall be vented to the outside. About your SD-164 Data Radio The SD-160 Series (hereinafter called the radios) of RF Link Modules from Topaz3 utilize the latest technology in their designs and manufacturing. SD-164 models are Phase Lock Loop Synthesizer (PLL) / microprocessor controlled and offer two (2) watts of power with 16-channel capability. Multiple functions including 1200 to 9600 baud rates, AC and/or DC audio coupling, GMSK, FFSK and FSK modulation are standard in these fully programmable wide bandwidth RF Link Module units. Programmable sub-audio squelch system (CTCSS & DCS) and two-tone squelch system are newly added to the signal level detect squelch system (RSSI). GPS Data handling is provided to interface and control internal GPS receiver. To assure satisfaction from the radio, we urge you to thoroughly read the operation and function information in this manual before operating your SD-164. Applications of some of the functions described in this manual are determined by the system you use. Your Topaz3 dealer will program your radio so that you have the greatest number of functions possible relative to your needs. Should you have questions regarding the operation of the radio, please consult your Topaz3 Dealer. 2 Specifications GENERAL Equipment Type Data radio Performance SpecificationsTIA / EIA-603 Band UHF Channel Spacings 25 kHz, 12.5 kHz programmable RF Output Power 2 watt only Modulation Type F2D, F3E Intermediate Frequency 45.1 MHz & 455 kHz Number of Channels 16 Frequency Source Synthesizer Operation Rating Intermittent Power Supply Ext. Power Supply(12 VDC Nominal) 90 : 5 : 5 (Standby: RX: TX) 7.2V - 18.0V DC EXTREME Temperature Range Storage from - 40C to + 80C Operating from - 30C to + 60C Current Consumption Standby (Muted) < 65 mA Transmit 2 Watt RF power < 1.0 A Frequency Bands:
UHF : U2 450.000 - 490.000 MHz 450.000 - 490.000 MHz RX TX Lock Time < 10 mS TX to RX attack time < 20 mS (No Power Saving) RX to TX attack time < 20 mS Dimensions (32 mm)H x (58 mm)W x (125 mm)D Weight 253 grams 3 TRANSMITTER Specification Carrier Power: Nom. Max. Min. Sustained Transmission Nominal conditions 2W < 2.2W > 1.5W Time : 5 10 30 Sec. Power: >90% >85% >80%
Frequency Error < 0.75 kHz Nominal condition for UHF 5.0 ppm Extreme condition for UHF Frequency Deviation:
25 kHz Channel Spacing Peak 5.0, Min. 3.8 12.5 kHz Channel Spacing Peak 2.5, Min. 1.9 Audio Frequency ResponseWithin +1/-3dB of 6dB octave
@ 300 Hz to 2.55 kHz for 12.5 kHz C.S.
@ 300 Hz to 3.0 kHz for 25 kHz C.S. Adjacent Channel Power 25 kHz < 70 dBc @ Nominal Condition
< 65 dBc @ Extreme Condition 12.5 kHz < 60 dBc @ Nominal Condition
< 55 dBc @ Extreme Condition Conducted Spurious Emission < -60 dBc Modulation Sensitivity 100mV RMS @ 60 % Peak Dev. Hum & Noise:
25 kHz Channel Spacing > 40 dB (with no PSOPH) 12.5 kHz Channel Spacing > 40 dB (with PSOPH) Modulation Symmetry < 10 % Peak Dev @ 1 kHz input for nominal dev +20dB Load Stability No osc at 10:1 VSWR all phase angles and suitable antenna No destroy at 20:1 all phase angle Peak Deviation Range Adjustment @ 1 kHz, Nom. Dev +20dB:
25 kHz Channel Spacing Min. 3.5, Max. 6.0 12.5 kHz Channel Spacing Min. 1.5, Max. 4.0 4 RECEIVER Specification Sensitivity (12dB Sinad) Standard B.W < -118 dBm, Narrow B.W <-117 dBm
@ Nom. Condition Standard B.W < -115 dBm, Narrow B.W <-114 dBm
@ Extreme Condition Amplitude Characteristic. < 3 dB Adjacent Channel Selectivity:
25 kHz Channel Spacing > 65 dB @ Nom., > 55 dB @ Extreme Condition 12.5 kHz Channel Spacing > 60 dB @ Nom., > 50 dB @ Extreme Condition Spurious Response Rejection > 60 dB (100 kHz - 4 GHz) Image Response > 60 IF Response > 60 Others. > 60 Intermodulation Response Rejection:
25 kHz/ 50 kHz 60 dB 50 kHz/ 100 kHz 60 dB Conducted Spurious Emission @ Nominal Conditions:
9 kHz - 1 GHz < -57 dBm 1 GHz - 4 GHz. < -47 dBm RX Spurious Emissions (Radiated) @ Nominal Conditions 9 kHz - 1 GHz < -57 dBm 1 GHz - 12.75 GHz < -47 dBm AF Distortion. < 5% @ Nom., < 10 % @ Extreme condition RX Hum & Noise:
25.0 kHz CP < 40 dB No PSOPH 12.5 kHz CP < 40 dB with PSOPH Receiver Response Time < 16 mS Squelch Opening Range: RF level for 6 to 14 dB Sinad Squelch Closing Range (Hysteresis): 0 - 6 dB Sinad @ Nominal Condition Squelch Attack Time:
RF Level at Threshold < 40 mS RF Level at Threshold + 20 dB < 30 mS Squelch Decay Time 5 mS Min., 20 mS Max. Antenna Socket Input Match > 10 dB Return Loss L.O. Frequency Temperature Stability 1st < 5 ppm, 2nd < 15 ppm from -30 to + 60 C L.O. Frequency Aging Rate 2 ppm/ year 5 Unpacking information Remove and carefully inspect the contents of your package(s) for the following items:
Radio Fused power cord User manual If any items are missing, please contact the Topaz3 dealer from which you purchased the radios, or contact Topaz3. SD-164 Features Synthesized Operation with 16 channel capability 2 Watt output power Programmable 12.5 / 25KHz channel spacing Channel scan Busy channel lockout Tx Time-out timer Power Save Marked Idle Tx Delay Data transmission and reception through GMSK modem Data transmission and reception through FFSK modem Support transmission of global position data Description of radio components
Antenna connector
DB-15 connector
Power connector
GPS Antenna connector (option)
LED (Busy / Tx indicator) 6 Exterior View 2 1 5 n o x a m CON407 7 RV402 RV401 RV403 6 SW401 Digital Board 4 3 Antenna installation Fasten the antenna to the radio by turning the antenna cable clockwise into the receptacle on left of radio when looking at front of radio. Powering the data radio Your data radio accepts many sources of DC power to permit more versatile use. This radio operates from 7.2V to 18V DC and standard voltage for test is 12V DC. Connecting the data radio to DC power Connect DC power plug of power cable to radios DC IN power connector and then fasten power plug to the radio by turning the ring clockwise. 7 SD-164 Operation Channel select / SCAN Your radios channel can be selected by inner DIP-S/W or serial command inputted from external control system. To change channel by inner DIP-S/W (), you should open the upper cover and then look for DIP-S/W() on the digital board of bottom cover. After that, change the DIP-S/W to select wanted channel according to channel dip switch chart. To use serial command for channel selection, it should be inputted by external equipment or device(ex. Personal computer) through Pin 8 of DB-15 connector. See the message format for serial command for full details. If your radio has been programmed the channel scan, you must enter the scan mode by serial command. Transmit The transmission will be made by various inputs as like PTT signal (Pin 3 of DB-15 connector), TX serial command and Serial data input (Pin 10 of DB-15 connector : This input is only available when modem option board is installed). Basically, TTL level is used as PTT signal and its low active. But, If you installed option modem board, you can use RS-232 level as PTT signal instead of TTL level. To maintain transmission, continuous PTT signal input is required. But, if you use Tx serial command for transmission, normally, its released by Rx serial command. Before the transmission, check the color of the radios top-panel LED(). It will glow orange if RF activity is present; it will not be illuminated if the radio indicates a clear channel. When the channel is clear, input the PTT signal or Tx serial command and transmit data or audio. Remove the PTT signal or input Rx serial command when you have finished transmission. CAUTION : Operation of the transmitter without a proper antenna installed may result in permanent damage to the radio. Receive When you have finished transmission, remove the PTT signal or input Rx serial command. You will receive data from another radio or hear another person talking from the connected external speaker. 8 Scan modes Scanning is a dealer programmable feature that allows you to monitor a number of channels. Your dealer will help you define a scanning mode and your channel scan list Channel scan Once the scan list has been established, initiate scan by serial commands. If a conversation is detected on any of the channels in the scan list, the radio will stop on that channel and you will be able to hear the conversation. At that time, busy channel data is sent to external equipment or device through serial command. So, you can identify busy channel data as decoding of received serial command from your radio in the external equipment or device. Normally, if you try to transmit during scanning, the transmission will be made on the channel that the call was received during the programmable scan delay time. (The scan delay time is the amount of time the radio will stay on that channel once activity has ceased. In case of dealer programmable, 4 ~ 7 seconds is typical). The radio will resume scanning once the scan delay time has expired, and will continue to scan until the serial command for scan stop is inputted by external equipment. After the scan resumes, if a transmission is made, the radio will transmit on the selected priority channel. This feature is similar to priority scan TX except for selection of priority channel. You can assign priority channel by inner dip switch only. Scan channel delete To temporarily delete a channel from the scan list, simply input serial command for scan deletion to the radio while scanning and stopped on the channel to be deleted. This will remove that channel from the scan list until the scan is closed or the radios power is reset. When scan restarts after close one time, all scan list are deleted, start scan after turn off or turn on the power of the radio, the originally programmed scan list will be activated. CTCSS / DCS Scanning To help to block out unwanted calls to your radio, the SD-160 series can be programmed by your dealer to scan for tones. 9 Channel dip switch chart CHANNEL NO. SWITCH POSITION 1 5 9 1 2 3 4 2 6 1 2 3 4 3 7 1 2 3 4 4 8 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 10 11 12 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 13 14 15 16 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 SW401 CHANNEL SELECT SWITCH Serial command Serial RX/TX Data Format
(1) Asynchronous Serial Data Transfer
(2) Baud Rate : 4,800 bit/sec
(3) Data Bit : 8bit , Non Parity
(4) Stop Bit : 1bit
(5) MSB first transmission Each serial command is consist of 3 bytes. 1st byte is command and 2nd is data required by command and 3rd is check sum to decide validity of total contents. Byte0 ST Byte1 ST Byte2 ST 3rd Byte (Check Sum) 1st Byte (Command) 2nd Byte (Data) SP SP SP 10 Data Protocol Protocol for input Serial command Protocol of data transmission from external equipment or device (: PC) to radio :
External equipment or device Radio Input serial command Receive response Response Protocol for output data Protocol of data transmission from radio to external equipment or device (: PC) :
External equipment or device Radio Receive Data Receive Data Output Data
(with command) Output Data
(with command) Serial Commands Transmit Command & data Mode Transmit Command
(BYTE0) Transmit data( BYTE1 ) Check sum( BYTE2 )
: Transmit Command + data 1. 2. Channel Change RTX Mode Send. 0x64 0x61 0x?? :Current channel R(0x72) : Rx mode T(0x74) : TX mode
( 0x64 + Channel )
( 0x61+0x72 )
( 0x61+ 0x74 ) 11 3. Scan Mode From PC To Radio 0x62 0x66 From Radio To Pc 0x65 Error Message
( 0x62+ 0x46 )
( 0x62+ 0x73 )
( 0x62+ 0x4F ) 0x66 + 0x00 0x66 + 0x01
*Only for Unmute Channel, F(0x46) : Scan Stop S(0x73) : Scan Start O(0x4F) : Scan Delete 0x00 : 1 Channel 0x01 : 2 Channel 0x02 : 3 Channel 0x0f : 16 Channel
It is occurred when Scan Delete command comes Correct Call Channel except for Busy/Correct Call
It is occurred when PTT key is pushed except for Busy/Correct Call.
It is occurred when channel change command exists 4. 5. GPS Initialize 0x63 Mode Entrance 0x60 during Scanning. 0x00 : GPS Disable 0x01 : GPS Enable 0x01
( 0x63+ 0x00)
( 0x63+ 0x01) 0x60 + 0x01 Receive Command & data Mode Transmit Command
(BYTE0) Transmit data ( BYTE1 ) Check sum( BYTE2 )
: Transmit Command + data 1 Process Complete Commands 0xaa 0x55 ACK NACK Note) This command is return signal for receiving command. If Byte2 and sum of Byte0 and Byte1 among received data are same, Radio would send ACK data and execute command. If not, Radio sends Nack data. User would go into next step if receives ACK data. If user receives Nack data, user should send command again. example) If user changes from 1st Channel to 2nd Channel, User should send Channel Change Command ( 0x64,0x02 , ( 0x64 + 0x2 ) ) to Radio. If Byte2 and sum of Byte0 and Byte1 among received data are same, Radio sends ACK data to user and changes to 2nd channel. If not, Radio would send Nack data. 12 Status indicators and audible alert tones Your SD-160 series data radio has a sophisticated microprocessor control which provides a range of LED displays. LED displays operation mode, current status of radio, warning, and etc. Moreover, if you connect Speaker filtered OUT (Pin 9 of DB-15 connector) to the external speaker, you can hear audible tones at the following conditions:
Attempt to transmit on a channel that is already in use when busy channel lockout has been programmed into the radio Transmission time has exceeded time-out timer programmed length When the other group or people finished transmission using repeater See the status indicators and audible alert tones chart for full details. LED COLOR AUDIBLE TONE STATUS NORMAL DESCRIPTION POWER ON Busy Channel Correct Call Transmit Transmit Not Allowed
Yellow Green Yellow SCANNING Normal Scan Mode Scan Delete Scan All Delete Green LED Flash one times Red LED Two times Red LED WARNING Busy Channel lockout Time out Time Before 5S T-O-T EEPROM Error Unlock Communication error with Modem MCU Transmit Hang on time At transmission, if Audio sound is not heard or Modem is not placed two times Green LED one times Green LED one times Green LED one times Yellow LED Four times Yellow LED Green LED flash Single Beep Tone Single Beep Tone
Two times Green LED Single Beep Tone 13 PROGRAM Read Mode Write Mode Red LED flash Green LED flash AUTO TEST Yellow SQUELCH PROGRAM MODE Open Squelch Mode Close Squelch Mode Save Squelch Mode Init Data Load three times Green LED Two times Green LED One times Green LED one times Green LED 14 DB 15 PIN descriptions with input/output level D-Type Pin No. Description Function 1 2 3 4 5 6 7 Data modulation IN
(Tx Mod) Signal is directly injected to MOD through data low pass filter without pre-emphasis. Data unfiltered OUT
(RX disc) Discriminator audio from the SD-160. This is the unprocessed AF signal prior to tone filtering and de-emphasis. PTT In
(Tx Key) Ground Serial Data Out
(TXD) Busy
(CD) Signal from the external device to key the SD-160 transmitter. This line has an internal pull up resistor to +5V. Pulling the line to 0V turns on the transmitter. Note : If you installed option modem board, you can select RS-232 signal level by Jumper (CON407, ) on the digital board. Ground connection to chassis of the radio. Serial data output for radio control or program. It uses asynchronous data format. Logic level output from SD-160 to indicate whether a carrier is present or not Note : If you installed option modem board, you can select RS-232 signal level by Jumper (CON407, ) on the digital board. Microphone audio IN filtered This signal is injected to the MOD at the point through audio-amplification, pre-emphasis and high pass filtering where sub-audio tone is mixed with audio. 15 Input/
Output I/P O/P I/P O/P O/P I/P Signal Type Analog signal 1KHz audio at 60%
peak system deviation input level =
100 to 120mVrms Analog signal 1KHz audio at 60%
peak system deviation produces 200 to 300mVrms TTL level 0V = Tx o/c = Rx RS-232 level (option)
+12V = Tx
-12V = Rx 0V (Chassis) TTL level TTL level 0V = carrier 5V = no carrier RS-232 level (option)
+12V = carrier
-12V = no carrier Audio 1KHz audio at 60%
peak system deviation input level =
6 to 8Vrms 8 9 Serial data IN
(RXD) Speaker filtered OUT Audio output from the audio amplifier. Serial command or data input for radio control or program. It uses asynchronous data format. Its filtered by tone-filter, de-emphasis circuit. 10 IN Serial data option modem for 11 12 13 Serial data Out for option modem Serial data busy for option modem
(reserved) GPS data input 14 DGPS data input 15 GPS data output The Serial data to be transmitted is input to this pin. Its only available when option modem board is installed. Inputted data are modulated by modem IC and then injected to MOD. It uses asynchronous data format. The recovered asynchronous serial data output from the receiver. Its only available when option modem board is installed. It uses asynchronous data format. To eliminate data loss according to buffer overrun of slave MCUs memory, it indicates buffer status. Data input for initial setting of GPS module. It follows NMEA 0183 asynchronous data format. Data input for DGPS Correction of GPS module. It follows NMEA 0183 format and uses asynchronous data format. Position data output from the GPS module. It follows NMEA 0183 format and uses asynchronous data format. format and uses TTL level Audio 1KHz audio at 60%
peak system deviation produces Nominal 1Vrms @ 8 RS-232 level I/P O/P I/P RS-232 level O/P RS-232 level O/P TTL level TTL level I/P I/P TTL level O/P 16 Modem for data communication Descriptions A new kinds of internal Option-Modem are applied to SD-160 series. One is FFSK modem and the other is GMSK modem. The most obvious method of increasing the efficiency is to maximize the data signaling speed in the limited channel bandwidth. But, FSK has very wide transmission bandwidth requirement. To solve this problem, we will supply GMSK
(Gaussian Filtered Minimum Shift Keying) internal option-board. In the case of data, its frequency spectra conflict with sub-audio frequency spectra. So tone squelch system is not adaptable. If there is tone, only FFSK / MSK modem available and no GMSK modem is used. Our internal Modem Option Boards consist of Slave MCU, Modem IC, and extra circuitry. This Option-Boards directly communicates with DTE (Data Terminal Equipment) to send and receive the meaningful data through the D-sub connector. Communication between DTE and Option-Board These modem option boards support only asynchronous communication between DTE and modem option boards to minimize loss of data during the transmission. Your dealer will help you define a TX On/Off Delay time, RX On Delay time, Baud Rate, Modem Enabled, Modem Baud Rate, RTS Control Mode, and Test Mode. Chart for modem speed Data transmission speed for FFSK Modem UART Baud Rate of DTE (BPS) 1200 2400 4800 Channel Space Narrow (12.5KHz) Standard (25KHz) Narrow (12.5KHz) Standard (25KHz) Standard (25KHz) Modem Baud Rate
(BPS) 1200 1200 2400 2400 4800 17 Data transmission speed for GMSK Modem UART Baud Rate of DTE (BPS) Channel Space Modem Baud Rate 4800 9600 Narrow (12.5KHz) Standard (25KHz) Standard (25KHz)
(BPS) 4800 4800 9600 Transmission GPS Data through Modem If GPS option board is installed in SD-160 series data radio, you can obtain your position data through GPS data output of your radio (Pin 15 of DB-15 connector). Besides, you can transmit received GPS data to the other radio or base station through modem if you install modem board with GPS board. Your dealer will help you install GPS option board and define related parameter set-up. 18 Option board pin-out chart FFSK Modem Option board Connector No. Connector 1 Pin No. 1 2 3 4 5 6 7 8 9 VCC GND PTT TXD_EN TX_END MUTE
(Busy) CORRECT_CALL POWER_SAVE CMD_EN 10 CMD_IN/OUT CMD_CLK 11 12 MODEM_SEL 13 RX_IN 14 TX_OUT Function Description 6V to 12V Power Input Ground Signal from the digital board to transmit data key the SD-
160 transmitter It ensures that the radio has stabilized in transmission before the data is processed for modulation. To finish transmission, it indicates memory buffer of Master MCU of digital board is empty. Logic level input from digital board to indicate whether a carrier is present or not It indicates that received signal has wanted tone or code if you apply tone squelch. Power save input for modem board. It indicates that command for Modem programming is effective. Data Input and Output for Modem programming. Clock Input for Modem programming. It Indicates modem type to Master MCU for programming. The FFSK/MSK signal input for the receiver of modem IC. The FFSK/MSK signal output when the transmitter is enabled. Connector 2 Serial_IN Serial_OUT Busy 1 2 3 The Serial data to be transmitted is input to this pin. The recovered asynchronous serial data output from the receiver. To eliminate data loss according to buffer overrun of slave MCUs memory, it indicates buffer status. 19 Input/
Output I/P I/P I/P O/P I/P I/P I/P I/P I/P, O/P I/P O/P I/P O/P I/P O/P O/P Carrier_Detect PTT_IN PROGRAM 4 5 6 Handshake signal for RTS control mode. It indicates whether Slave MCU of modem has decoded data or not. Handshake signal for RTS control mode. It requests data transmission to Slave MCU of modem. Its reserved input for firmware upgrade. O/P I/P I/P GMSK Modem Option board Function Description Connector No. Connector 1 Pin No. 1 2 3 4 5 6 7 8 9 VCC GND PTT TXD_EN TX_END MUTE
(Busy) N/C POWER_SAVE CMD_EN 10 CMD_IN/OUT CMD_CLK 11 12 MODEM_SEL 13 RX_IN 14 TX_OUT 6V to 12V Power Input Ground Signal from the digital board to enable transmitter circuit of modem board. It ensures that the radio has stabilized in transmission before the data is processed for modulation. To finish transmission, it indicates memory buffer of Master MCU of digital board is empty. Logic level input from digital board to indicate whether a carrier is present or not Not Connected Power save input for modem board. It indicates that command for Modem programming is effective. Data Input and Output for Modem programming. Clock Input for Modem programming. It Indicates modem type to Master MCU for programming. The GMSK signal input for the receiver of modem IC. The GMSK filtered Tx output signal. Connector 2 Serial_IN Serial_OUT 1 2 The Serial data to be transmitted is input to this pin. The recovered asynchronous serial data output from the receiver. 20 Input/
Output I/P I/P I/P O/P I/P I/P I/P I/P, O/P I/P O/P I/P O/P I/P O/P Busy Carrier_Detect PTT_IN PROGRAM 3 4 5 6 To eliminate data loss according to buffer overrun of slave MCUs memory, it indicates buffer status. Handshake signal for RTS control mode. It indicates whether Slave MCU of modem has decoded data or not. Handshake signal for RTS control mode. It requests data transmission to Slave MCU of modem. Its reserved input for firmware upgrade. O/P O/P I/P I/P GPS Option board Pin No. 1 2 3 4 5 6 7 8 9 Function Description VCC VBAT ENABLE PSAVE GND GPS_OUT DGPS_IN GPS_IN
+5V 6V to 12V Power Input Ground Input/
Output I/P I/P I/P I/P I/P I/P 21 Compatible accessory list ACC-513 9600 baud GMSK modem ACC-514 4800 baud FFSK modem ACC-515 GPS receiver ACC-160 GPS antenna ACC-516 PCB Interface - used to separate digital and RF board for alignment. ACC-916 Personality programming software. ACC-2016 Individual programming cable ACC-2160 Test jig box 22