Chapter 6 Maintaining and Troubleshooting the TimeProvider

Diagnosing the IOC

Diagnosing the IOC

Reading LED Conditions

Table 6-2shows 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

 

Power is On

 

Off

 

Power is Off

 

Flashing Green

Warming Up

 

 

 

 

Fail

Red

 

Card failure

 

Off

 

No failure

 

 

 

 

Alarm

Red

 

Card alarm

 

Off

 

No alarm

 

 

 

 

Active

Green

 

Card is active

 

Off

 

Card is in standby mode

 

 

 

 

Holdover

Off

 

Tracking at least one input

 

Amber

 

Not tracking in PRR mode; Bridging Mode

 

 

 

engaged

 

Red

 

Tracking no inputs

 

 

 

 

PRS

Q LED Off

A LED Off

Disabled

 

Q LED Amber A LED Off

Enabled, in process of qualifying

 

Q LED Green A LED Green

Enabled, qualified, and active

 

Q LED Green A LED Off

Enabled, qualified, and not active

 

Q LED Red

A LED Off

Enabled and not qualified

 

 

 

 

Input 1

Q LED Off

A LED Off

Disabled

 

Q LED Amber A LED Off

Enabled, in process of qualifying

 

Q LED Green A LED Green

Enabled, qualified, and active

 

Q LED Green A LED Off

Enabled, qualified, and not active

 

Q LED Red

A LED Off

Enabled and not qualified

 

Q LED Flashing GreenA LED Off

Enabled and not qualified: Tip-Ring reversed

 

 

 

 

Input 2

Q LED Off

A LED Off

Disabled

 

Q LED Amber A LED Off

Enabled, in process of qualifying

 

Q LED Green A LED Green

Enabled, qualified, and active

 

Q LED Green A LED Off

Enabled, qualified, and not active

 

Q LED Red

A LED Off

Enabled and not qualified

 

Q LED Flashing GreenA LED Off

Enabled and not qualified: Tip-Ring reversed

 

 

 

 

GPS

Off

 

Disabled

 

Green

 

Enabled and GPS qualified

 

Amber

 

Enabled and in Bridging mode

 

Red

 

Enabled and GPS disqualified (except in

 

 

 

Bridging mode)

 

 

 

 

 

 

 

 

097-58001-02 Revision G – April 2008

TimeProvider User’s Guide 157

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Symmetricom 1000, 1100 manual Diagnosing the IOC, Reading LED Conditions