Leds - Black Box Compact T1 MT850A User Manual

T1 Controller Card

LEDs

LEDs
The T1 Controller has a set of six LEDs you can use to troubleshoot your Compact T1.
The table below describes each LED.
0 (Off) 1 (On)
6-10
LED State
MAJOR Off
Red
MINOR Off
Yellow
LOCAL Off
Green
ACO Off
Yellow
T1-1 and Off
T1-2
Green
Red
Yellow
Flashing Green
Flashing Red
Flashing Yellow
Description
No major alarms present
Major alarm present
No minor alarms present
Minor alarms present
Remote mode (DIP switches disabled)
Local mode (DIP switches enabled)
Normal mode. No alarms are being
suppressed.
Alarm cutoff active. One or more active
alarms suppressed.
Off line
Normal
Loss of Signal (LOS) detected
Bipolar Violation (BPV) detected
Loopback active
Loss of Frame (LOF) or Alarm Indication
Signal (AIS) detected
Yellow alarm (Remote Alarm Indication)
detected.
Compact T1 - Release 6.1