[time-nuts] Selecting a used HP sweep/frequency generator

[Alan Melia]

I have found on several occasions that you can read an "failing" EPROM in a
prommer, that will not operate in its application. Sometimes it is possible
to read. erase and reburn the same Eprom and get a working system again, but
it is always worth keeping an image.

Alan G3NYK

----- Original Message ----- 
From: "Poul-Henning Kamp" <phk at phk.freebsd.dk>
To: "Discussion of precise time and frequency measurement"
<time-nuts at febo.com>
Sent: Friday, April 15, 2011 1:49 PM
Subject: Re: [time-nuts] Selecting a used HP sweep/frequency generator


> In message <BANLkTimq6dnmrOUYYc=xjYHb7ajAs3gb_w at mail.gmail.com>, paul swed
writ
> es:
>
> >Please read the eproms. Mine are dead and they will absolutely die. The
> >mosteks are a known failure. If you can get me the images I will attempt
to
> >integrate them into a modern 27128 or something and do that install. I
have
> >had to do that on a couple of other types of HP gear.
> >I also put copies of eproms on Diddiers site for everyone.
>
> It is sometimes possible to read otherwise "lost" eproms by manipulating
> their temperature downwards.
>
> -- 
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by
incompetence.
>
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