Serial Port
vProtocol (RS232, RS422 or RS485) is fixed by soldered links. See page 10.
Pin No |
| RS232 |
| RS422 |
| RS485 |
|
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|
|
| |
1 | SHDN | Modem on/off input |
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| ||
|
| If < 0.6V, Modem = OFF |
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| ||
|
| If o/c (internal |
| |||
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|
2 | RXD | Receive Data | OP | Receive Data | IO | Inverting |
|
| output |
| inverting output |
| input/output |
|
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|
3 | TXD | Transmit Data | IP | Transmit Data input | NC | No function |
|
| input |
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4 | TXB | Secondary | NC | No function | NC | No function |
|
| Transmit Data |
|
|
|
|
|
| input |
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5 |
|
|
| 0V |
|
|
|
|
| ||||
6 |
| VSENSE External Battery Monitor input +50VDC max | ||||
|
|
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|
7 | RTS | RTS input | IP | Transmit Data | NC | No function |
|
|
|
| inverting input |
|
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|
8 | CTS | CTS output | OP | Receive Data | IO | |
|
|
|
| output |
| input/output |
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|
9 | RXB | Secondary | NC | No function | NC | No function |
|
| Receive Data |
|
|
|
|
|
| output |
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|
8 | 1892 1335 - Orion Radio Modem Operating Instructions - v1.3 / Aug 2006 |
