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

 

 

 

MAJOR

Off

No major alarms present

 

 

 

 

Red

Major alarm present

 

 

 

MINOR

Off

No minor alarms present

 

 

 

 

Yellow

Minor alarms present

 

 

 

LOCAL

Off

Remote mode (DIP switches disabled)

 

 

 

 

Green

Local mode (DIP switches enabled)

 

 

 

ACO

Off

Normal mode. No alarms are being

 

 

suppressed.

 

 

 

 

Yellow

Alarm cutoff active. One or more active

 

 

alarms suppressed.

 

 

 

T1-1 and

Off

Off line

T1-2

 

 

Green

Normal

 

 

 

 

 

Red

Loss of Signal (LOS) detected

 

 

 

 

Yellow

Bipolar Violation (BPV) detected

 

 

 

 

Flashing Green

Loopback active

 

 

 

 

Flashing Red

Loss of Frame (LOF) or Alarm Indication

 

 

Signal (AIS) detected

 

 

 

 

Flashing Yellow

Yellow alarm (Remote Alarm Indication)

 

 

detected.

 

 

 

Compact T1 - Release 6.1

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Image 35
Black Box COMPACT T1 quick start LEDs, State Description