The original Brooks Shera unit was 20 years ago and is pretty well
documented in QST and his website. In the original the loop filter
timeconstant was set by jumpers or DIPswitches. And I think the EFC gain
factor was set somewhere else (DIPswitch? Resistor network? Both?)
Shera's webpage
ISTR that you started it with a short time constant to get locked, and once
you had lock you would increase the time constant in a few steps to a final
value of (say) 1000s or so.
Dave
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Volker Esper
Thanks so far. I will have a look at the docs.
The machine is running well, particularly the OCXO is performing very
good when free running (without GPS signal). It is stable and its ADEV
looks good (2E-10 at 10s). Not so the overall ADEV (when GPS locked)
(1E-5 at 10s). It seems to not having
Hi,
Also, since it's a p rather than any other character, my guess is that
it probably was deliberate - although whether it was meant to be
shipped like that is another question.
Angus.
On Wed, 12 Jul 2017 11:56:24 -0400, you wrote:
>Well ASCII * is 2a in Hex, p is 70 so that seems an
Hello All Again,
I’ve got my 5370B going now and in the process made a “discovery” which I
thought might be worth sharing:
The A3 input board is a through-hole PCB with a few SMD capacitors and
resistors on the reverse of the “switch area”. It turns out that on my 5370
(2410A00777) these
