Specifications
REAR CONNECTOR PINOUT
|
| Table 2 Connector Pinout | |
Pin # | I/O | Connection | Function |
1 | I | Power + | main DC power input |
2 | I | Reserved | Do not connect |
3 | O | TxD | RS232 serial data output |
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 | RxD | RS232 serial data input |
11 | O | Serial ground | RS232 signal ground |
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
18 | Apollo SL40 Installation Manual |