Led Conditions For The Ioc; Diagnosing The Ioc - Reading Led Conditions - Symmetricom TimeProvider 5000 User Manual

Chapter 6 Maintenance and Troubleshooting
Troubleshooting
Table 6-2. Troubleshooting Symptoms
Symptom
System in Holdover
Not tracking E1 Input
(GPS LED is OFF)
System stays in warm-up
Diagnosing the IOC  Reading LED Conditions
Table 6-3 shows the function of the LED indicators on the IOC.
Table 6-3. LED Conditions for the IOC
Indicator Label
Power PWR
Module Power
Indicator
332 TimeProvider 5000 User's Guide
Probable Cause
Loss of Signal (LOS) of
E1 Input
Alarm Indication Signal
(AIS)
Out of Frame (OOF)
Signal amplitude level
ToD source (GPS or E1)
invalid
Warm-up still in progress
Description
Green - Module power available
Off - Module power not available
Troubleshooting Procedure /
Corrective Action
Check connection for E1 input
Check E1 input source
Check E1 input source
Check E1 input source
Check E1 input source.
Check cables
Check Input source.
Check alarms with "show alarm-config"
command.
Typical warm-up time for the Active card
is:
30 40 minutes
Quartz
60 minutes
50
Rubidium
Standby IOC starts locking to Active IOC
after Active IOC enters normal track.
Allow an additional ~20 minutes for
Standby card to completes warm-up.
Corrective Action
Check power supply
Table 6-2
See
any module" for probable causes
and more corrective actions.
098-00028-003 Revision A – June, 2011
n/a
,"No LED lit on