> What is the general feeling here about this issue? I confess that if the amp
> output is transformer coupled, I see exactly zero benefit in a grounded
> connector as the feed from the amplifier.
This question comes up every so often. It comes down to whether you want your
test setup to look l
anuary 28, 2017 11:29 AM
Subject: [time-nuts] distribution amp question + hp 59309A
I notice that in the distribution amp being discussed at the moment,
the BNC output connectors are grounded, and tied to the chassis,
which in turn has a grounded emi line filter. this seems like an unavoidable
> Also on an unrelated topic, I found an HP 59309A HPIB clock on a forgotten
> shelf
> and looked at it, and was surprised to see such a poor primary time standard
> oscillator inside, just a 1Mhz crystal using a cmos buffer oscillator. It can
> accept an external standard, but it did feel odd
Hi
The gotcha with transformer coupled coax is keeping it terminated over a wide
range of frequencies. If the coax is miss terminated
and the end of the cable is floating, you have a pretty good opportunity for
noise to get into the system. Floating shields are also a
pretty good way to get cro
I notice that in the distribution amp being discussed at the moment,
the BNC output connectors are grounded, and tied to the chassis,
which in turn has a grounded emi line filter. this seems like an unavoidable
noise pathway to me.
I notice that some commercial amps are grounded, but more advan
