SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS

See the state of the Alarm Latch for each indicator

Clear the Alarm Latch for all indicators

Enable or disable blinking of the Alarm Status LED on the front panel while it is green or amber

Set the values for Time Threshold, Timeout Delay, and Power-On Alarm Suppress

The following table summarizes F73’s alarm indicators and parameters, as well as the factory settings for an XLi with one GPS C/A receiver card. The factory settings vary depending on the options included at the XLi at the time it ships from the factory. For example, for an XLi with an GPS receiver, the GPS Primary Receiver indicator setting would be Alarm Enabled.

Update the alarm settings when adding or removing option cards from the XLi.

Indicator/Parameter Name

Status

Factory Setting

 

 

(for XLi without option cards)

Clock Status

Locked/Unlocked

Always Enabled

PLL Locked

Locked/Unlocked

Alarm Enabled

Low Phase Noise (LPN) PLL Locked

Locked/Unlocked

Alarm Enabled

GPS Primary Receiver

OK/Fault

Alarm Enabled

GPS Secondary Receiver

OK/Fault

Alarm Disabled

IRIG Fault

OK/Fault

Alarm Disabled

Aux Ref Fault

OK/Fault

Alarm Disabled

Primary Power

OK/Fault

Alarm Enabled

Secondary Power

OK/Fault

Alarm Disabled

Rubidium oscillator

OK/Fault

Alarm Disabled

(XLi w. optional Rubidium oscillator)

 

 

DAC

OK/Fault

Alarm Disabled

First Time Lock

OK/Fault

Alarm Enabled

Time Error

OK/Fault

Alarm Enabled

Time Threshold

(Range 0 to 99,999 ns)

0000 ns

Alarm LED Blink

n/a

Blink Enabled

Timeout

OK/Fault

Alarm Enabled

Timeout Delay

(Range 0 to 86,400 sec.)

300 sec.

Power-On Alarm Suppress

(Range 0 to 86,400 sec.)

300 sec.

NTP Fault

OK/Fault

Alarm Disabled

(XLi w. NTP option)

 

 

Clear Alarm Latch

Yes/No

No

Note: The Rubidium Oscillator and NTP option are currently unavailable for the standard XLi IEEE 1588 clock.

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XLi IEEE 1588 Clock

997-01510-03, Rev. C, 12/12/2006

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Symmetricom XLi IEEE 1588 manual Dac