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Symmetricom 1000 User Manual

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097-58001-02 Revision G – April 2008
TimeProvider User’s Guide 157
Chapter 6 Maintaining and Troubleshooting the TimeProvider
Diagnosing the IOC
Diagnosing the IOC
Reading LED Conditions
 shows the function of the LED indicators on the front panel of the IOC.
Table 6-2.  LED Conditions for the IOC
LED Name
Condition
Description
Power
Green
Off
Flashing Green
Power is On
Power is Off
Warming Up
Fail
Red
Off
Card failure
No failure
Alarm
Red
Off
Card alarm
No alarm
Active
Green
Off
Card is active
Card is in standby mode
Holdover
Off
Amber
Red
Tracking at least one input
Not tracking in PRR mode; Bridging Mode 
engaged
Tracking no inputs
PRS
Q LED Off
A LED Off
Q LED Amber A LED Off
Q LED Green A LED Green
Q LED Green A LED Off
Q LED Red
A LED Off
Disabled
Enabled, in process of qualifying
Enabled, qualified, and active
Enabled, qualified, and not active
Enabled and not qualified
Input 1
Q LED Off
A LED Off
Q LED Amber A LED Off
Q LED Green A LED Green
Q LED Green A LED Off
Q LED Red
A LED Off
Q LED Flashing GreenA LED Off
Disabled
Enabled, in process of qualifying
Enabled, qualified, and active
Enabled, qualified, and not active
Enabled and not qualified
Enabled and not qualified: Tip-Ring reversed
Input 2
Q LED Off
A LED Off
Q LED Amber A LED Off
Q LED Green A LED Green
Q LED Green A LED Off
Q LED Red
A LED Off
Q LED Flashing GreenA LED Off
Disabled
Enabled, in process of qualifying
Enabled, qualified, and active
Enabled, qualified, and not active
Enabled and not qualified
Enabled and not qualified: Tip-Ring reversed
GPS
Off
Green
Amber
Red
Disabled
Enabled and GPS qualified
Enabled and in Bridging mode
Enabled and GPS disqualified (except in 
Bridging mode)