[time-nuts] I wish to shorten GPS antenna cable - should I let receiver find the position again?

Mike Cook michael.cook at sfr.fr
Thu Apr 23 14:04:09 EDT 2015

> Le 23 avr. 2015 à 14:03, Dr. David Kirkby (Kirkby Microwave Ltd) <drkirkby at kirkbymicrowave.co.uk> a écrit :
> I have an HP 58503A which I am using as a frequency source only - not
> to tell the time. I want to shorted the antenna cable a bit, but are
> wondering if I should let the GPS receiver finds it position again. Or
> either of the following better
> * Remove antenna cable, put a new N plug on, and screw it back in with
> the receiver kept powered up all the time.
> * Power off GPS receiver and power it back on with the cable connected.
> I'm not moving the antenna, so the actual position will not change,
> but of course the signals will get to the receiver a bit sooner.

Just reconfigure the cable delay according to its new length. 
IIRC is 58503A uses the same SCPI command set last the Z3801A, so if that is the case that would be the command:

:ptime:gpsystem:adelay <nanoseconds> NS

> Dave, G8WRB
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