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: [email protected] [mailto:[email protected]] 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: [email protected] [mailto:[email protected]] On Behalf Of Eric Haskell Sent: Sunday, March 20, 2011 1:42 AM To: [email protected] 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 -- [email protected] 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 -- [email protected] 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 -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
