[time-nuts] Measurement of frequency of HP 8720D option 1D5oscillator after switch on

John Miles john at miles.io
Sat Oct 4 23:02:19 EDT 2014

> -----Original Message-----
> From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Tom Van
> Baak
> I have several SR620 and HP5370 in my lab. My preference has always been the
> SR620; by size, features, front panel, calibration, programming. But both
> counters do the job so if you can find either one at a reasonable price go for it.
> The SR620 is still a current & supported product at SRS.
> Over the years I've visited quite a few professional time & frequency labs and
> always see SR620's in use. Rarely, any HP5370. Not sure what that means.
I have a feeling most of the 5370s in commercial and lab environments have died of old age.  It's been a long time since Hewlentsight sold or supported them, and they aren't trivial to maintain.

-- john, KE5FX
Miles Design LLC

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