TM-800 UHF SERVICE MANUAL
151
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.