Specifications

RMU800A SERVICE MANUAL
－ 139 －
Pin No.
Name Description
J111 (at the rear panel; to Secondary Development Interface)
1 TXD0 Serial data input.
2 RXD0 Serial data output.
3 MIC2 External MIC signal output.
4 ME MIC ground.
5 AFO Filtered Audio output.
6 AUX5 Programmable auxiliary port.
7 AUX4 Programmable auxiliary port.
8 AUX3 Programmable auxiliary port.
9 HRO Horn Relay Output.
10 HRI Horn Relay Input.
11 PA1 MIC signal output.
12 PA2 MIC signal output.
13 E Ground.
14 SB Power input after power switch (13.6V+15%).
15 IGN Ignition sense input.
J109 (To Secondary Development Interface or Data Encryption and Decryption)
1 8C +8V.
2 E GND.
3 SB Power input after power switch (13.6V+15%).
4 AUX1 Programmable auxiliary port.
5 AUX6 Programmable auxiliary port.
6 AUX7 Programmable auxiliary port.
7 NC No Connection.
8 RSSI Receiver Signal Strength Indication.
9 CTO CDCSS signal output.
10 PCO Transmitting Power Control Output.
11 UL Unlock detection signal output.
12 MII Transmitting audio input.
13 MIO Transmitting audio output.
14 AFI Filtered Audio input.
15 AFO Filtered Audio output.
J102 (To Secondary Development Interface or SMARTUNK)
1 TXD1 Serial data output.
2 RXD1 Serial data input.
3 AUX5 Programmable auxiliary port.
4 DEO Receive signal detection.
5 DI Data modulate input.
6 ALT Alert hint input.
7 5V +5V.