Bob,
While I don't think it may be the source of your 500 ps issue, if you
dig in the archive you can find a post where I disabled the signal
detect circuit which spews out 5 MHz spikes. It's a relative easy mod
and you can revert it, so that is at least one thing to test.
Cheers,
Magnus
On 03/23/2016 04:37 AM, Bob Stewart wrote:
I started getting noise spikes of up to 500ps on my 5370 the other day. When I
switch to external clock and use the PRS-45A, the noise goes away. In fact,
the noise issue is way better than with the 10811. I swapped in a different
10811, and the noise doesn't seem to have returned, but it was intermittent, so
I may not have waited long enough. However, even when the 500ps spikes aren't
there, both 10811s have too much noise, compared to the PRS. So, is there some
common cause for this on the clock buffer board that anyone's run into?
Also, I did pop the bottom off the 10811 from the 5370, and I noticed that the
thermal fuse seems to have very thin wires compared to the socket holes it
plugs into. Could this be a source of additional noise?
Bob - AE6RV
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