AM64/128A User Manual | Appendix A - Interface Connections |
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25 Way D-type RS-530 Connector pin allocation
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Unbal |
| A wire | B wire | Circuit | Description | SITS 89/43 | |
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1 |
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| Earth/Shield | Common |
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| 103(AB) | Common Return | Common |
| 7, 22, 10, 13 |
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| 103(BA) | Transmitted Data | Load |
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| 2 |
| 14 | |||
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| 3 |
| 16 | 104(BB) | Received Data | Generator |
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| 4 |
| 19 | 105*(CA) | Request to Send | Load |
5 |
| (5) |
| (13) | 106*(CB) | Ready for Sending | Generator |
6 |
| (6) |
| (22) | 107*(CC) | Data Set Ready | Generator |
8 |
| (8) |
| (10) | 109*(CF) | Data Channel Received | Generator |
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| 25 |
| 11 | 113(DA) | External Transmitter Signal Element Timing | Load |
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| 15 |
| 12 | 114(DB) | Transmitter Signal Element Timing | Generator |
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| 17 |
| 9 | 115(DD) | Receiver Signal Element Timing | Generator |
21 |
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| 140(RL) | Remote Loopback | Load |
18 |
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| 141(LL) | Local Loopback | Load |
25 |
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| 142(TM) | Test Indicator | Generator |
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*Standards dictate that the control circuit 107 may be implemented as a balanced circuit (using both A and B wires) or as an unbalanced single ended circuit.
In the AM64/128A, circuit 105 is implemented as a balanced circuit and 106,107,109 are unbalanced. To allow inter working between balanced and unbalanced circuits, the A wire is to be used and the B wire is to be joined to GND (circuit 102) at the receiver end of the circuit.
9 Way
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| TYPE |
A wire | B wire | Description | SITS 89/43 | |
1 | 5 | G.703 | OUT | Generator |
6 | 9 | G.703 | IN | Load |
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Line Connector
The modem comes packed with a
Note: Alternative Line cord connectors are available upon request.
