Hi One very useful piece of information to have - which eproms are they?
There was a field upgrade of these and the 5371's in the early 90's. The upgrade added several commands and likely fixed some bugs. I *assume* the upgrade was an eprom switch out, but I have never verified that. Bob -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of paul swed Sent: Monday, March 21, 2011 9:07 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] hp 5372A Parts available I would be interested in any cpu/eproms. Not sure of your location. My goal will be to copy the eproms and share back to the group and put on some website for others. After I am done someone else can have the memory/cpu board. Hate to loose that type of information. Regards Paul W8TSL On Mon, Mar 21, 2011 at 12:38 AM, J. L. Trantham <jlt...@att.net> wrote: > Eric, > > My 5372A fails Test 4, 'Input Amplifiers', with 'Input Bias Failure', > 'Input > Bias Test 6: MAX: 2172 (Min: 2172) [2191 2235]', and Test 6, 'Count ICs', > with 'Count ICs Failed A3U37 and A3U42' and 'A3 U37, U42 chain FAILED --bad > count [4.1902 mS gate] : 0029517C [001FF7FC]'. > > I am not sure what all that means but it would appear that the problem is > on > the A5, A4, or A3 board. Since Channel A is dead and Channel B works, A5 > may be the culprit > > I would like to hear what boards you have to offer. > > Thanks, > > Joe > > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of J. L. Trantham > Sent: Sunday, March 20, 2011 8:34 AM > To: 'Discussion of precise time and frequency measurement' > Subject: Re: [time-nuts] hp 5372A Parts available > > Eric, > > I have a 5372A that has a problem on one of the input channels. I > mistakenly unplugged the input pod and reinserted it with the power on. > Since then, that channel does not work. I can't remember the specific > failed test right now but I will investigate. The pod still works, the > problem stays with the channel. I think I need to repair one of the > boards. > > Where are you located? > > Joe > > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of Eric Haskell > Sent: Sunday, March 20, 2011 1:42 AM > To: time-nuts@febo.com > Subject: [time-nuts] hp 5372A Parts available > > I just scrap out a 5372a. The unit was working but reporting a histogram > error. I am keeping a few parts, the rest is available. Let me know if > you > need anything. > > Eric Haskell > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1204 / Virus Database: 1498/3517 - Release Date: 03/19/11 > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1204 / Virus Database: 1498/3517 - Release Date: 03/19/11 > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.