Table 5-1. LED Conditions for the IOC (Continued)
LED Name
Holdover
PRS
Input 1
Input 2
GPS
Table 5-2
shows the condition of the LED indicators on the front panel of the IMC
under normal operating conditions
Table 5-2. LED Conditions for the IMC
LED Name
Power
Fail
Alarm
Critical
Major
Minor
ACO
097-58001-02 Revision C – August 2005
Condition
Off
Q LED Green, A LED Green
Q LED Green, A LED Off
Q LED Red, A LED Off
Q LED Green, A LED Green
Q LED Green, A LED Off
Q LED Red, A LED Off
Q LED Green, A LED Green
Q LED Green, A LED Off
Q LED Red, A LED Off
Off
Green
Amber
Red
Condition
Green
Power is On
Off
No failure
Off
No alarm
Off
No Critical alarms
Off
No Major alarms
Off
No Minor alarms
Off
Alarm cutoff disabled
Chapter 5 Testing the TimeProvider
Description
Tracking at least one input
Enabled, qualified, and active
Enabled, qualified, and not active
Enabled and not qualified
Enabled, qualified, and active
Enabled, qualified, and not active
Enabled and not qualified
Enabled, qualified, and active
Enabled, qualified, and not active
Enabled and not qualified
1 PPS signal is not present
1 PPS signal is active
Bridging mode fault
Loss of 1 PPS signal, TPIU fault,
or antenna fault
Description
Verifying Normal Operation
TimeProvider User's Guide 137