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997-01530-01, Rev. C-25, Jan 2008 67
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SSSSSSSSSSSS SSSS SSSSSS SSSSSSS S SSS SSSSSSS
LED Blink
When LED Blink is enabled, the Alarm Status LED on the front panel blinks when it is green or amber.
The LED does not blink when it is red, even if LED Blink is enabled. Some users disable LED Blink to
ensure that the LED’s color (state) is displayed without interruption.
Timeout and Timeout Delay
Timeout and Timeout Delay can be used to prevent short-term Time Error faults from triggering Time
Error alarms.
Timeout Disabled: All Time Error faults trigger an alarm, regardless of duration.
Timeout Enabled: Only Time Error faults that last longer than the Timeout Delay (measured in seconds)
trigger an alarm. If a Time Error fault clears and returns to an OK state before the Timeout Delay has
elapsed, the ‘countdown’ stops and no alarms are triggered. All Time Error faults start the Timeout Delay
‘countdown’ from the beginning (i.e., Timeout Delay does not keep a countdown tally for multiple Time
Error faults).
Power On Alarm Suppress
Power On Alarm Suppress prevents all F73 alarms from occurring for a specified interval after the unit
starts up. The factory default setting is 300 seconds (five minutes). When that interval ends, current and
new alarms are reported normally.
NTS
OK: NTS is operating nominally.
Fault: NTS is not operating correctly. Contact Symmetricom Customer service. See “
H: Sales and
Customer Assistance” on page 143.
Clear Alarm Latch
Use Clear Alarm Latch after troubleshooting or fixing the cause of an alarm so new alarms can be
distinguished from previous ones.
About Alarm Latch: The Alarm Latch shows if an indicator has triggered an alarm at any time since the
last time the Alarm Latch was cleared, even if the indicator is presently “Locked” or “OK”. This feature is
useful for finding and troubleshooting transient alarms. F73 indicators must be enabled in order for
alarms to occur and be latched. The alarm latch does not record the occurrence of a fault or unlocked
state if the indicator is disabled. The Alarm Latch is visible as an asterisk (“*”) when viewing F73 on the
front panel display. For example:
GPS OK ∗
ALARM ENABLED