Operator's Manual

OM-E 2072-09689-00
B-1
APPENDIX B
CONNECTOR DATA
B-1. MICOM-Z TRANSCEIVER CONNECTORS
B-1.1 Microphone Connector
The microphone connector is located on the radio front panel. Table B-1 lists the functions of the
microphone connector pins.
Table B-1. Microphone Connector, Pin Functions
Pin Designation Description
1 SWA+ Power output to the microphone
2 RXD Serial communication line (input)
3 TXD Serial communication line (output)
4 GND Ground line
5 MIC AUDIO
Input audio signals generated by the microphone (600 Ω
impedance; 300 mV tone is required for full output power).
6 PTT MIC Activates transmission by short to ground.
7 MONITOR Mutes the speaker before transmission is enabled (short
momentary to ground to open speaker).
8 AUDIO OUT
Receive audio output to earphone (600 Ω, 300 mVRMS)
B-1.2 Antenna Connector
The N type antenna connector is located on the rear panel of the transceiver. In the transmit mode, it is
used to feed the antenna with the transmit signal; in the receive mode, it is used to connect the
received signal from the antenna to the radio.
B-1.3 ACCESSORY Connector
The ACCESSORY connector is a 44-pin D-type male connector located on the radio rear panel. It is
intended for use with external accessories such as modems, PCs, etc., or for connection to the cooling
tray (para. B-2.4). Table B-2 lists the pin functions of the ACCESSORY connector.
Table B-2. ACCESSORY Connector, Pin Functions
Pin Designation Description
1 SPKR-
Differential output to external 8Ω, 5W speaker
2 STOP SCAN Digital control input for stop scan function (optional function)
3 SPKR+
Differential output to external 8Ω, 5W speaker
4 EXT RX AUDIO+
5 EXT RX AUDIO-
Differential received audio output (0 dBm/600Ω; not controlled by
volume)
6 EXT TX AUDIO+
7 EXT TX AUDIO-
Differential transmit audio input (600Ω input impedance, 0 dBm is
required for full power)
8 PTT IN VOICE Transmission command (short to ground) for voice signals