[time-nuts] Adding prescaler to HP 5334B

Robert Berg bob.b at pobox.com
Thu Apr 3 11:07:57 EDT 2008


Thanks, Rick.

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Richard (Rick) Karlquist
Sent: Tuesday, April 01, 2008 8:05 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Adding prescaler to HP 5334B

The diode limiter is to protect the C channel
from getting burned out due to connecting a
transmitter to it, etc.  You don't need the
limiter if you aren't worried about this.
The detector gates off the counter when there
is insufficient signal to count reliably.
The detector is imperfect, and the counter
may read garbage anyway, or may be blanked
on a signal that would be countable.  For the
average time nuts user, you can leave out both
of these "features" with no harm.  I had to
design them in for "marketing" reasons.

Rick Karlquist
5334B Project Manager

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