Hi,
Yes, we're still very much in business but COVID and commercial business
commitments have affected my pet VP/UT+ replacement project (for the rest of
us). The single board SSR-VP B-1, 6 channel board works in HP Z3801A/Z3805A
products and we're now testing in 8 channel VP and UT+ Datum/Sy
Hello All,
I had a thunderstorm with a close discharge, the flash and bang were
simultaneous.
And very loud/bright. I found no sign of a ground strike, but I had damage from
the EMP.
My Broadband modem was damaged, the router died (all the lights went out and
the power supply
ran hot). All the e
I pinged Art at oemi...@synergy-gps.com some time ago as they appear to
have announced a drop-in replacement for the Oncore modules, but I never
got a response. Dunno if they are still in business, etc.
I would like some for my HP Z3805As ...
He had previously posted to time-nuts:
" "*I apologiz
Hi
Crystal filtering for far removed phase noise does work. It’s far from a
“perfect”
solution. The crystal it’s self contributes noise and it does AM to PM
conversion.
You pretty much always get a “noise hump” as a result.
Like any filter, a single crystal filter has an attenuation vs freque
My faithful 3801, some 207 thousand hours old, has developed an
occasional fault that I think must be down to the Motorola Oncore 6
channel board and I wonder if there is an available unit that could
replace this, or what the recommended substitute is? eBay searches
don't show any of the origi
Tom
Thanks for the excellent feedback.
About what I try to do: I'm trying to find a way to evaluate the
performance of a GPSDO/Counter/Timer
For the GPSDO an ADEV plot should be ok but for the counter/timer I'm
struggling. For the the two input time stamping counter part I understand
that one test
Thanks for posting both TIM files along with the plots. Here are replies
to 3 of your questions:
> Is this setup meaningful in assessing performance differences?
> If not, how to improve?
It's probably better to compare two different counters using the same
setup. So give them both the same Rb
Dear Fans,
While I was researching cross-correlation, I came across an interesting
paper that described different methods of reducing OCXO phase noise. They
involved putting a 10 MHz crystal between the buffer amplifier and the
output load. One method promised "sub-thermal" phase noise. The idea i
