[time-nuts] Looking for an HP K34-59991A Linear Phase Comparator
robert.atkinson at genetix.com
Wed Dec 7 04:16:28 EST 2005
I've looked at building one of these and it's not quite so trivial to
duplicate. The speed of the logic is important, the original design used
ECL. High speed CMOS may be OK but how do you verify performance? The
original also used an unusual input circuit designed around a
discontinued line receiver IC. This is critical to performance, any
variation in threshold will appear as a phase error. I'm continuing to
prototype a new design and will let you know how I get on.
I've got a manual on PDF if you need it.
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Rick Karlquist
Sent: 06 December 2005 19:35
To: Discussion of precise time and frequency measurement
Cc: time-nuts at febo.com
Subject: Re: [time-nuts] Looking for an HP K34-59991A Linear Phase
It is trivial to build your own out of a couple of flip flops.
You can read Michael Fischer's patent on it (circa 1980).
Rick Karlquist N6RK
> Happy Holidays to All Time, Frequency, and Phase Domainers.
> I am looking for an HP Linear Phase Comparator, Model K34-59991A. Does
> anyone have one to sell???
> Thanks in advance for checking and passing the word for me.
> Gar Ko
> Email Addresses:
> bionucleonics at southwind.net
> ne8s at earthlink.net
> time-nuts mailing list
> time-nuts at febo.com
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