Charles,
Thank you, I found this very enlightening. Now I have to find the 9.7
KHz pulses, no luck so far.
Best regards,
Ignacio
El 12/11/2014 a las 7:34, Charles Steinmetz escribió:
Ignacio wrote:
I'm not very sure that the DAC is working, I suppose that the unit
doesn't measure the DAC output, it reports the DAC commands. My
voltage figures is what LH reports (so the NTGS50AA reports, probably
what it is trying to do), but the frequency control pin of the
oscillator is stuck at 5.02 V regardless of the supposed (intended)
DAC output, it does not move at all.
One more thing that could be helpful -- on Nov. 2, 2013 Stewart Cobb
posted a description of the DAC operation for a Trimble Thunderbolt
("Thunderbolt tuning DAC theory of operation"). On Jan. 5, 2014
someone (no name) posted further information on the same thread re:
the Trimble/Nortel 45k. You can find both posts in the list archives
(follow the link at the bottom of this post, then click "time-nuts
Archives" on the list home page).
Best regards,
Charles
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