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Date
Re: Test Equipment For Sale
Hmm, I just today joined this group, and also in the last couple of days killed my cash reserves buying some HP gear; a 4140B pA meter, a 4192A? impedance analyzer, and a couple of other big heavy HP
By Guy Dunphy · #105418 ·
Re: WTB: 5265A Digital Voltmeter for HP 5245L Electronic Counter.
I think I have 2 dc voltmeters plug-ins 2 counters and more different plug-ins I can sell them but I am from Slovenia regards, Borut V V sre., 22. apr. 2020 ob 18:02 je oseba Jeremy Nichols
By Borut V · #105417 ·
Re: Series 1 & 2 boxes (was Seeking Spring Nuts for Series 1 cabinet)
Regarding the new thread creation, I was thinking that it was caused by members changing the subject block when replying to an existing thread. Whatever the cause I agree that it is annoying.
By Tom Phillips · #105416 ·
Re: WTB: 5265A Digital Voltmeter for HP 5245L Electronic Counter.
I have a 5265A but not for sale. They show up on the auction sites occasionally but seem to be scarce. The blank covers are even rarer; the only ones I¡¯ve ever seen for sale were part of a counter
By Jeremy Nichols · #105415 ·
Re: Problem with HP MMS 70000, USERLOCK ON
Hi Pierre 40 manuals a r now on the HP 70000 Group site along with a folder called Notes for MMS And in there is an XL sheet for 2 of the key boards I did last year and a few more bits of handy
By Paul Bicknell · #105414 ·
Re: HP 3314A manual needed
Hi Thank you for posting the link as my manual was missing the schematics By the way I think I have seen a face lift version if so did they change the CCT Regards Paul _____ From:
By Paul Bicknell · #105413 ·
Re: HP8562A Errors 304,335,317,333
Drat :) I've used the shunt technique in the past, and I definitely won't admit to leaving a shunt in permanently. I'm not sure what to look at next. The 8562 or a Datron DC calibrator, where the cal
By Tom Gardner · #105412 ·
Re: Problem with HP MMS 70000, USERLOCK ON
PROBLEM SOLVED ! After the memory card was unplugged from the CPU card which has retention the battery and then plugged again the problem disappeared. Conclusion the ERASE ALL of the analyzer doesn't
By Pierre-Fran?ois (f5bqp_pfm) · #105411 ·
Re: HP 3314A manual needed
However our copy is the 90021 not the later 90025 I think the original poster was looking for Dave manuals@...
By Dave / NR1DX · #105410 ·
Re: HP8562A Errors 304,335,317,333
Hello Tom those are switchmode related. I think you would benefit from recapping it. But as I said be carefull I one time lost connection to a middle layer and had bigger spurious. Had to trace it
By Peter Hansen · #105409 ·
Re: Problem with HP MMS 70000, USERLOCK ON
1) Yes, it was running during many years ! 2) Too bad ... 3) I'll re-install the CPU+Mem? boards and as I unplugged the Memory board from the CPU where the battery is located I'm sure the old
By Pierre-Fran?ois (f5bqp_pfm) · #105408 ·
Re: HP8562A Errors 304,335,317,333
Thanks for a very fast response. The pictures are https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=758046
By Tom Gardner · #105407 ·
Re: HP 3314A manual needed
We have a an excellent copy with no missing sections Dave www.ArtekManuals manuals@... -- Dav
By Dave / NR1DX · #105406 ·
Re: HP8562A Errors 304,335,317,333
Hello Tom where do you see the spurs either 30khz out or around 60khz out. ?? there are 2 switch modes in use a Preregulator and a post regulator. they run 2 different voltages. Finding spurs at -70dB
By Peter Hansen · #105405 ·
Re: Problem with HP MMS 70000, USERLOCK ON
Hi, Yes for sure ! 73's pf
By Pierre-Fran?ois (f5bqp_pfm) · #105404 ·
Re: HP8562A Errors 304,335,317,333
I have an 8652b with spurs at -70dBc. In your experience are there any caps which are especially at risk of failure? I have not, yet, opened it to have a look and make measurements. Thanks
By Tom Gardner · #105403 ·
Re: Problem with HP MMS 70000, USERLOCK ON
1. Are you sure the program did run once or is it the first time you try to run this DLP into this 70900B CPU (coming from an OSA) ? 2. There is no way to test the internal memory 3. Try to erase all
By jfphp · #105402 ·
Re: Problem with HP MMS 70000, USERLOCK ON
Hi have you looked at the service manual _____ From: [email protected] [mailto:[email protected]] On Behalf Of Pierre-Fran?ois (f5bqp_pfm) Sent: 22 April
By Paul Bicknell · #105401 ·
Re: Problem with HP MMS 70000, USERLOCK ON
And I measured the effective retention voltage on the vdd of the TC551001CF-70L memories, it's at 2.864v , the datasheet says it should be at 2v minimum to keep up the data, so definitively it's not a
By Pierre-Fran?ois (f5bqp_pfm) · #105400 ·
Re: Problem with HP MMS 70000, USERLOCK ON
I then decided to open my 70900B, have not done this since many years when I upgraded the firmware with the latest from my previous 70952B. At that time I uploaded this latest firmware on KO4BB web
By Pierre-Fran?ois (f5bqp_pfm) · #105399 ·