Serial Interface; Rear Connector Pinout - Garmin Apollo SL30 COMM Installation Manual

S I
ERIAL NTERFACE
RS-232...................................................... Defined in Appendix E - Serial Interface
R C
EAR ONNECTOR
The SL30 includes two rear panel connectors, a 15-pin for the Comm interface connections
and a 37-pin for the rear panel connections. The pinout for the connectors is listed in the
following tables.
Pin # I/O Connection
1 I Power +
2 I Reserved
3 O Reserved
4 I TxKey
5 -- NC
6 O Speaker
7 I Mic ground
8 I Mic 1
9 I Power ground
10 I Reserved
11 O Reserved
12 I Intercom select
13 O Audio ground
14 O Headphone
15 I Mic 2
Apollo SL30 Installation Manual
Specifications
P
INOUT
Table 2 - Comm Interface Connector Pinout
Function
Main DC power input
Do not connect
Do not connect
Transmit enable key, pulled low to transmit
Do not connect
Speaker terminal output
Microphone input ground connection
Microphone input #1
Main power ground input
Do not connect
Do not connect
Intercom function select, pulled low to turn on the intercom
function
Speaker and headphone ground connection
Headphone terminal output
Microphone input #2
1
9
Viewed from rear of unit
8
15
Specifications
47