Tom,

It looks like they have a pForth interpreter running in there under PSOS: <http://code.google.com/p/pforth/>. Is there a mechanism to switch from SCPI to the Forth interpreter?

david

Trimble and HP took different approaches on their GPSDO's.
Trimble lets you get into things and fiddle around. HP is much more a black box.
I have never seen anything that lets you "fiddle' with one of the HP units.
Hi Bob,

I'm glad you asked. True, the Trimble TSIP binary command set lets you fiddle 
and the HP SCPI command set is much easier to use but more limited by 
comparison. But there's also a rich under-the-hood layer on the HP units. Spend 
some time with this file and you'll see what I mean:
http://leapsecond.com/museum/z3801a/z3801a-bin.txt
I explored the functionality in some detail during my hp GPSDO DAC dither 
investigation some years ago. Contact me offline.

/tvb




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