Garmin apollo sl30 comm Manuale Utente

RS-232...................................................... Defined in Appendix E - Serial Interface 

Specifications 

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. 

 

 

 

Table 2 - Comm Interface Connector Pinout 

 

 

1 

I 

Power + 

Main DC power input 

 

2 

I 

Reserved 

Do not connect 

 

3 

O 

Reserved 

Do not connect 

 

4 

I 

TxKey 

Transmit enable key, pulled low to transmit 

 

5 

-- 

NC 

Do not connect 

 

6 

O 

Speaker 

Speaker terminal output 

 

7 

I 

Mic ground 

Microphone input ground connection 

 

8 

I 

Mic 1 

Microphone input #1 

 

9 

I 

Power ground 

Main power ground input 

 

10 

I 

Reserved 

Do not connect 

 

11 

O 

Reserved 

Do not connect 

 

12 

I 

Intercom select 

Intercom function select, pulled low to turn on the intercom 
function 

 

13 

O 

Audio ground 

Speaker and headphone ground connection 

 

14 

O 

Headphone 

Headphone terminal output 

 

15 

I 

Mic 2 

Microphone input #2 

 

 

1

8

9

15

Viewed from rear of unit