Quick Start
Controller Cards
LEDs
The T1 Controller has a set of six LEDs you can use to troubleshoot your Compact T1. The table below describes each LED.
LED | State | Description | |
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MAJOR | Off | No major alarms present | |
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| Red | Major alarm present | |
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MINOR | Off | No minor alarms present | |
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| Yellow | Minor alarms present | |
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LOCAL | Off | Remote mode (DIP switches disabled) | |
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| Green | Local mode (DIP switches enabled) | |
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ACO | Off | Normal mode. No alarms are being | |
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| suppressed. | |
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| Yellow | Alarm cutoff active. One or more active | |
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| alarms suppressed. | |
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Off | Off line | ||
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Green | Normal | ||
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| Red | Loss of Signal (LOS) detected | |
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| Yellow | Bipolar Violation (BPV) detected | |
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| Flashing Green | Loopback active | |
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| Flashing Red | Loss of Frame (LOF) or Alarm Indication | |
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| Signal (AIS) detected | |
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| Flashing Yellow | Yellow alarm (Remote Alarm Indication) | |
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| detected. | |
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Compact T1 - Release 6.1 | 31 |