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Chapter 4 Command Quick Reference
1 PPS Reference Synchronization
Operating and Programming Guide 4-7
1 PPS Reference Synchronization
The following commands are provided to monitor the operating mode of the
reference oscillator, to determine the accuracy and stability of the reference
output signal(s), and to control the oscillator holdover process.
Monitoring 1 PPS Synchronization
:DIAGnostic:ROSCillator:EFControl:RELative?
:LED:GPSLock?
:LED:HOLDover?
Assessing 1 PPS Quality
:SYNChronization:HOLDover:DURation?
:SYNChronization:HOLDover:DURation:THReshold <seconds>
:SYNChronization:HOLDover:DURation:THReshold?
:SYNChronization:HOLDover:DURation:THReshold:EXCeeded?
Operating in Holdover
Initiating Manual Holdover
:SYNChronization:HOLDover:INITiate
Recovering from Holdover
:SYNChronization:HOLDover:RECovery:INITiate
:SYNChronization:HOLDover:RECovery:LIMit:IGNore
:SYNChronization:IMMediate
:SYNChronization:STATe?
Returns the Receiver state.
:SYNChronization:FFOMerit?
Returns the Frequency Figure of Merit.
:SYNChronization:HOLDover:TUNCertainty:PREDicted?
Returns an estimate of the time error that can be expected for a one day holdover, given
the current state of SmartClock learning in the Receiver.
:SYNChronization:HOLDover:TUNCertainty:PRESent?
Returns the current time interval error at any time during holdover operation, given the
current state of SmartClock learning in the Receiver.
:SYNChronization:TFOMerit?
Returns the Time Figure of Merit.
:SYNChronization:TINTerval?
Returns the difference or timing shift between the SmartClock 1 PPS and the
GPS 1 PPS signals.
:SYNChronization:HOLDover:WAITing?
Returns prioritized reason why the Receiver is waiting to recover.
Basic comman
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