[time-nuts] Convert Stanford Research SR620 time-interval counter to SR625 ???
Dr. David Kirkby (Kirkby Microwave Ltd)
drkirkby at kirkbymicrowave.co.uk
Thu Nov 27 17:37:16 EST 2014
On 27 November 2014 at 22:15, Brooke Clarke <brooke at pacific.net> wrote:
> Hi David:
> If you look just to the right of the SR620 you will see a separate box that
> contains the PRS10.
Ah, I missed that!!!
I was thinking it fitted inside the SR620, but obviously not.
> The PRS10 can work as either a Rb GPSDO or as a time stamping device. For
> the SR620 any GPSDO would make a good external reference.
It would have been nice to have a better reference inside, as
sometimes I move equipment around, and don't always want to take more
than necessary, so having a better reference inside would have been a
nice thing, but I see it is not what I thought.
This unit I purchased has the option 01, the ovenized VCXO, but of
course that is not going to have the long-term stability of a Rb
I see one of the SR625 add-ons on eBay,
but it does not look in good condition, so I'm not paying $700 for it.
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