
Chapter 3 - Operation | ||
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Grounding
Note
3.2 Cable Connections
DC adapter Connection.
In order to protect the
3.3 Dry Contact Circuit and Connector for Alarms
A dry circuit with a
Alarm type | Description |
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RED ALARM | Power Failure (DC voltage on board) |
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YELLOW ALARM | Signal Detect Failure (to any of the unit modules) |
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CONFIG ALARM | Improper Configuration (incompatible modules |
| and/or data rates selected) |
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Three pins are dedicated for each alarm: Common (COM), OK and FAIL. The COM pin is the input for each alarm. The user can drive the COM pin with any signal (0 to 5v). If the signal is received OK, the COM pin is connected to its corresponding OK pin; If there is a failure, the COM pin is connected to its corresponding FAIL pin. See Table
Table
Alarm Type |
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| COM | OK |
| FAIL | ||||
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RED | 9 |
| 4 | 5 | ||||||||
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YELLOW | 3 |
| 8 | 7 | ||||||||
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CONFIG | 6 |
| 2 | 1 | ||||||||
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Figure 3-3 Connector Pin Assignment
Dry Contact Circuit and Connector for Alarms |