097-58001-02 Revision G – April 2008
TimeProvider User’s Guide 147
Chapter 5 Testing the TimeProvider
Verifying Normal Operation
Table 5-2
shows the condition of the LED indicators on the front panel of the IMC
under normal operating conditions.
Holdover
Off
Tracking at least one input
PRS
Q LED Green, A LED Green
Q LED Green, A LED Off
Q LED Red, A LED Off
Enabled, qualified, and active
Enabled, qualified, and not active
Enabled and not qualified
Input 1
Q LED Green, A LED Green
Q LED Green, A LED Off
Q LED Red, A LED Off
Enabled, qualified, and active
Enabled, qualified, and not active
Enabled and not qualified
Input 2
Q LED Green, A LED Green
Q LED Green, A LED Off
Q LED Red, A LED Off
Enabled, qualified, and active
Enabled, qualified, and not active
Enabled and not qualified
GPS
Off
Green
Amber
Red
1 PPS signal is not present
1 PPS signal is active
Bridging mode fault
Loss of 1 PPS signal, TPIU fault, or
antenna fault
Table 5-2. LED Conditions for the IMC and IMC/TPIU
LED Name
Condition
Description
Power
Green
Power is On
Fail
Off
No failure
Alarm
Off
No alarm
Critical
Off
No Critical alarms
Major
Off
No Major alarms
Minor
Off
No Minor alarms
ACO
Off
Alarm cutoff disabled
Table 5-1. LED Conditions for the IOC (Continued)
LED Name
Condition
Description
Содержание EDGE CLOCK 1000
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