Symmetricom TimeSource 3600 User Manual page 103

Procedure 3-6. Power-Up (Continued)
Step
33. When the GPS signals have been acquired and the outputs are stable enough to output a
signal, the TimeSource enters a settling period. During the settling period, the following
conditions exist:
Status GPS lamp is green
Status SYS lamp is green
Any Span lamp is green when its input is connected, entered, contains valid framing,
and is usable for ensembling
All outputs are functioning according to specifications or in a slightly degraded mode
A TL1 autonomous "settling period" event message exists.
Notes:
1. In roof antenna installations, the nominal time to reach normal operation (output a
PRS signal) is 20 min. If normal operation has not been reached after 40 min, refer to
the Troubleshooting chapter.
2. The settling period is the condition where this clock is beyond the warm-up state but
not yet in steady state operation. Steady state operation is indicated by the clearing of
the "settling period" event.
3. In window or wall antenna installations, the nominal time to reach normal operation
(output a PRS signal) is variable, depending on the view of the sky and the satellite
positions at the time of power-up, and may take up to several hours. If normal
operation is not reached, refer to the Troubleshooting chapter.
4. The TimeSource 3600 develops and sends timing within the PRS specification during
normal operation and during any event (other than settling period) or minor alarm, but
not during a major or critical alarm.
097-72060-01 Revision J – June, 2007
Procedure
End of Procedure
Chapter 3 Installing the TimeSource 3600
Powering Up the TimeSource 3600
TimeSource 3600 User's Guide 103