Midland Radio SD161 VHF Radio Transmitter User Manual Specifications

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SD-161 / 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.
Power listed is conducted. This device must not exceed a maximum transmitting duty factor of 50%. The antenna(s) used
for this transmitter must be installed to provide a separation distance of at least 49cm (19 inches) from all persons, must not
be co-located or operating in conjunction with any other antenna or transmitter, and must not exceed a gain of 5 dBd for
SD-161 and 7 dBd for SD-164. Failure to observe these restrictions will result in exceeding the FCC RF exposure limits.
About your SD-160 Series Data Radio
The SD-160 Series of RF Link Modules from Topaz3 utilize the latest technology in their designs and manufacturing. SD160 models are Phase Lock Loop Synthesizer (PLL) / microprocessor controlled and offer two (2) watts of power with 16channel 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 RF Link Module units. Programmable sub-audio squelch system
(CTCSS & DCS) and two-tone squelch system are added to the signal level detect squelch system (RSSI). GPS Data
handling is provided to interface and control an 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-161/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.
Specifications
GENERAL
Equipment Type ……………………………………………………… Data radio
Performance Specifications…………………………………………TIA / EIA-603
Band …………………………………………………………………… VHF(SD-161) / UHF(SD-164)
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
90 : 5 : 5 (Standby: RX: TX)
Power Supply ………………………………………………………… Ext. Power Supply(12 VDC Nominal)
7.2V - 18.0V DC EXTREME
Temperature Range
Storage ………………………………………………………………… from - 40°C to + 80°C
Operating ……………………………………………………………… from - 30°C to + 60°C
Current Consumption
Standby (Muted) ……………………………………………………… < 65 mA
Transmit 2 Watt RF power ………………………………………… < 1.0 A
Frequency Bands:
RX
VHF : V2 148.000 - 174.000 MHz
UHF : U2 450.000 - 490.000 MHz
TX
148.000 - 174.000 MHz
450.000 - 490.000 MHz
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
TRANSMITTER Specification
Carrier Power: ………………………………………………………… Nom. Max. Min.
2W < 3W > 1.5W
Sustained Transmission …………………………………………… Nominal conditions
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 Response………………………………………… Within +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
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
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 at
phone number 1-800-821-7848 or local 1-816-891-6320.
SD-161 / 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)
Exterior View
CON407
RV401
maxon
RV402
RV403
SW401
Digital Board
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 radio’s DC IN power connector and then fasten power plug to the radio by
turning the ring clockwise.
SD-160 Series Operation
Channel select / SCAN
Your radio’s 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 the DIP-S/W(&) on the digital
board of the bottom cover. Once located change the DIP-S/W to select wanted channel according to channel dip switch
chart.
To use a 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 such as 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 a modem option board is installed). TTL
level is used as PTT signal and is active low. If you installed an option modem board, you can use RS-232 level as a PTT
signal instead of TTL level. To maintain transmission, continuous PTT signal input is required. If you use Tx serial
command for transmission, normally, it’s released by Rx serial command. Before the transmission, check the color of the
radio’s 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.
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. Dealer programming of 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 a priority channel by inner dip switch only.
Scan channel delete
To temporarily delete a channel from the scan list, simply input the serial command for scan deletion to the radio while
scanning and stopped on the channel to be deleted. This will temporarily remove that channel from the scan list until the
scan is closed or the radio’s power is reset.
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.
10
Channel dip switch chart
CHANNEL NO.
SWITCH POSITION
13
12
15
11
14
10
16
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
1st Byte (Command)
SP
2nd Byte (Data)
SP
3rd Byte (Check Sum)
SP
Byte1
ST
Byte2
ST
11
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
Response
Receive response
Protocol for output data
Protocol of data transmission from radio to external equipment or device (: PC) :
External equipment or device
Radio
Output Data
(with command)
Receive Data
Output Data
(with command)
Receive Data
Serial Commands
Transmit Command & data
Mode
1.
2.
3.
Channel Change
RTX Mode Send.
Scan
Mode
From PC
To Radio
Transmit
Command
(BYTE0)
0x64
0x61
0x62
Transmit data( BYTE1 )
0x?? :Current channel
R(0x72) : Rx mode
T(0x74) : TX mode
F(0x46) : Scan Stop
S(0x73) : Scan Start
O(0x4F) : Scan Delete
12
Check sum( BYTE2 )
: Transmit Command + data
( 0x64 + Channel )
( 0x61+0x72 )
( 0x61+ 0x74 )
( 0x62+ 0x46 )
( 0x62+ 0x73 )
( 0x62+ 0x4F )
0x66
From Radio
To Pc
0x65
Error
Message
4.
Control of
GPS Power
0x63
GPS
mode
5.
0x6a
Control of
GPS Data
Modem test mode
6.
Modem
alignment
mode
GMSK
0x75
0x7a
0x7c
FFSK
0x7e
0x00 : 1 Channel
0x01 : 2 Channel
0x02 : 3 Channel
0x66 + 0x00
0x66 + 0x01
*Only for Unmute Channel,
0x0f : 16 Channel
Correct Call Channel
' It is occurred when Scan Delete command comes
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
during Scanning.
0x00 : GPS Power Off
( 0x6a + 0x00 )
0x01 : GPS Power On
( 0x6a + 0x01 )
0x00 : GPS Data Disable
( 0x63 + 0x00 )
0x01 : Release GPS Data ( 0x63 + 0x01 )
to DB-15
0x02 : Release GPS Data ( 0x63 + 0x02 )
to Modem
0x78 : Enable test data
( 0x75 + 0x78 )
0x79 : Disable test data
( 0x75 + 0x79 )
0x00 : Disable
( 0x7a + 0x00 )
0x01 : Enable
( 0x7a + 0x01 )
0x00 : Disable
( 0x7c + 0x00 )
0x01 : Enable Mark data
( 0x7c + 0x01 )
0x00 : Disable
( 0x7e + 0x00 )
0x01 : Enable Space data ( 0x7e + 0x01 )
Receive Command & data
Mode
Process Complete
Commands
Transmit
Command
(BYTE0)
0xaa
0x55
Transmit data ( BYTE1 )
Check sum( BYTE2 )
: Transmit Command + data
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.
13
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 the Speaker filtered OUT (Pin
9 of DB-15 connector) to an 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.
STATUS
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
Read Mode
Write Mode
Red LED flash
Green LED flash
NORMAL
PROGRAM
AUTO TEST
SQUELCH PROGRAM
MODE
LED COLOR
Two times Green LED
Yellow
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
AUDIBLE TONE
Single Beep Tone
Single Beep Tone
Single Beep Tone
DB 15 PIN descriptions with input/output level
D-Type
Pin No.
Function
Description
Data modulation IN
(Tx Mod)
Signal is directly injected to MOD through data Analog signal
low pass filter without pre-emphasis.
1KHz audio at 60%
peak system deviation
input level =
100 to 120mVrms
Discriminator audio from the SD-160. This is Analog signal
the unprocessed AF signal prior to tone 1KHz audio at 60%
filtering and de-emphasis.
peak system deviation
produces
200 to 300mVrms
Signal from the ‘external device’ to key the TTL level
0V = Tx
SD-160 transmitter.
This line has an internal pull up resistor to +5V. o/c = Rx
Pulling the line to 0V turns on the transmitter.
Note : If you installed option modem board, RS-232 level (option)
you can select RS-232 signal level by +12V = Tx
Jumper (CON407, )) on the digital board.
-12V = Rx
Ground connection to chassis of the radio.
0V (Chassis)
Serial data output for radio control or program. TTL level
It uses asynchronous data format.
Logic level output from SD-160 to indicate TTL level
whether a carrier is present or not
0V = carrier
Note : If you installed an option modem 5V = no carrier
board, you can select RS-232 signal level
by Jumper (CON407, )) on the digital RS-232 level (option)
board.
+12V = carrier
-12V = no carrier
This signal is injected to the MOD at the point Audio
through audio-amplification, pre-emphasis and 1KHz audio at 60%
high pass filtering where sub-audio tone is peak system deviation
mixed with audio.
input level =
6 to 8Vrms
Serial command or data input for radio control TTL level
or program. It uses asynchronous data format.
Audio output from the audio amplifier.
Audio
It’s filtered by tone-filter, de-emphasis circuit.
1KHz audio at 60%
peak system deviation
produces
Nominal
1Vrms @ 8•
The Serial data to be transmitted is input to RS-232 level
this pin. It’s 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 RS-232 level
output from the receiver. It’s only available
when option modem board is installed. It uses
asynchronous data format.
To eliminate data loss according to buffer RS-232 level
overrun of slave MCU’s memory, it indicates
buffer status.
Data unfiltered OUT
(RX disc)
PTT In
(Tx Key)
Ground
Serial Data Out
(TXD)
Busy
(CD)
Microphone
audio IN
Serial data IN
(RXD)
Speaker filtered OUT
filtered
10
Serial data IN for
option modem
11
Serial data Out for
option modem
12
Serial data busy for
option modem
(reserved)
Signal Type
15
Input/
Output
I/P
O/P
I/P
O/P
O/P
I/P
I/P
O/P
I/P
O/P
O/P
13
GPS data input
14
DGPS data input
15
GPS data output
Data input for initial setting of GPS module.
TTL level
It follows NMEA 0183 format and uses
asynchronous data format.
Data input for DGPS Correction of GPS TTL level
module. It follows NMEA 0183 format and
uses asynchronous data format.
Position data output from the GPS module. It TTL level
follows NMEA 0183 format and uses
asynchronous data format.
16
I/P
I/P
O/P
Modem option for data communication
Descriptions
Internal optional modems can be applied to SD-160 series. One is the FFSK modem and the other is the GMSK modem.
The most obvious method of increasing data efficiency is to maximize the data signaling speed in the limited channel
bandwidth. FFSK has a very wide transmission bandwidth requirement. To solve this problem, use the GMSK (Gaussian
Filtered Minimum Shift Keying) modem option.
In the case of data, its frequency spectra conflict with sub-audio frequency spectra. If tones are required, only the FFSK
modem can be used.
Our internal modem option boards consist of a Slave MCU, Modem IC, and extra circuitry. The modem option directly
communicates with the 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 the 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.
Table for modem speed
Channel Space
Narrow (12.5KHz)
Standard (25KHz)
UART Baud Rate of
DTE
1200
2400
1200
2400
4800
Modem Baud Rate
Table 1. Available Baud rate for FFSK modem
17
1200
2400
1200
2400
4800
UART Baud Rate of
DTE
4800
4800
9600
Channel Space
Narrow (12.5KHz)
Standard (25KHz)
Modem Baud Rate
4800
4800
9600
Table 2. Available Baud rate for GMSK modem
Transmission GPS Data through Modem
If the GPS option board is installed in your SD-160 series data radio, you can obtain your position data through GPS data
output of your radio (Pin 15 of DB-15 connector). You can also transmit received GPS data to another radio or base station
if installed with a modem board and GPS board.
Your
dealer
will
help
you
install
the
GPS
option
18
board
and
define
related
parameter
set-up.
Option board pin-out chart
FFSK Modem Option board
Connector
No.
Connector 1
Pin
No.
Function
VCC
GND
PTT
Description
6V to 12V Power Input
Ground
Signal from the digital board to transmit data key the SD160 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.
TXD_EN
TX_END
MUTE
(Busy)
CORRECT_CALL
POWER_SAVE
CMD_EN
10
CMD_IN/OUT
11
12
13
14
CMD_CLK
MODEM_SEL
RX_IN
TX_OUT
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.
Serial_IN
Serial_OUT
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
MCU’s 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.
It’s reserved input for firmware upgrade.
Connector 2
Busy
Carrier_Detect
PTT_IN
PROGRAM
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
O/P
I/P
I/P
GMSK Modem Option board
Connector
No.
Connector 1
Pin
No.
Function
VCC
GND
PTT
TXD_EN
Description
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.
19
Input/
Output
I/P
I/P
I/P
5
TX_END
MUTE
(Busy)
N/C
POWER_SAVE
CMD_EN
10
CMD_IN/OUT
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.
11
12
13
14
CMD_CLK
MODEM_SEL
RX_IN
TX_OUT
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.
Serial_IN
Serial_OUT
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
MCU’s 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.
It’s reserved input for firmware upgrade.
Connector 2
Busy
Carrier_Detect
PTT_IN
PROGRAM
O/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
O/P
I/P
I/P
GPS Option board
Pin
No.
Function
VCC
VBAT
ENABLE
PSAVE
GND
GPS_OUT
DGPS_IN
GPS_IN
+5V
Description
6V to 12V Power Input
Input/
Output
I/P
I/P
I/P
I/P
Ground
O/P
I/P
I/P
I/P
20
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
21

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Producer                        : Acrobat Distiller 4.05 for Windows
Creator                         : Microsoft Word 9.0
Modify Date                     : 2003:06:10 16:39:44-04:00
Author                          : JSLIM
Title                           : Specifications
Create Date                     : 2003:06:06 10:49:33
Page Count                      : 21
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