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Date
Re: HP 8970B System Check
Based on your reported measurements, I'm wondering if the appropriate filter set for the selected measurement is actually happening. Unfortunately, this can only be confirmed by opening and measuring.
By Bruce · #126885 ·
Re: HP 8970B System Check
"Lothar baier" <Lothar@...> writes: Thanks for the input Lothar. The only adjustments actually described in the HP 8971C manual are power supply adjustments. The troubleshooting section
By Matt Huszagh · #126884 ·
New HP8560E
Facebook marketplace worked out well this weekend, and I picked up an HP8560E, SN 3517A01857. It's in good shape, powers up with no errors and has a good display. Is there any recommended
By David Bengtson · #126883 ·
Re: ESA instrument adjustments - reverse engineering
This is a lot of work ! Congrats and thank you ! Ing. Patricio A. Greco Taller Aeron¨¢utico de Reparaci¨®n 1B-349 Organizaci¨®n de Mantenimiento Aeron¨¢utico de la Defensa OMAD-001 Gral. Mart¨ªn
By Patricio A. Greco · #126882 ·
Re: HP 8662A - alternative attenuator configurations, 8663A Last Rev Mnl
No problem, I would be happy to help get them digitized! I can definitely do 600dpi. If you are already looking to get a nice scanner for doing manuals I would definitely recommend the epson- it has
By Michael Bierlein · #126881 ·
Re: HP 8116A woes with E42 error
Hi David, Congratulations for the repair. I am in San Francisco Bay Area (aka Silicon Valley). If you are close by or have plans to visit beer sounds good. Ozan
By Ozan · #126880 ·
ESA instrument adjustments - reverse engineering
Hello Everyone, While working on my own E4407B I uncovered a few things. My own machine had an untuned YTF in the RYTHM which I have since successfully corrected. I discovered from the N7800 docs that
By Kalle Kempe · #126879 ·
Re: HP 8970B System Check
It sounds to me like your YIG filter is not peaked, you might need to run the adjustments for the yig driver !
By Lothar baier <Lothar@...> · #126878 ·
Re: HP 8970B System Check
I've performed some of the microwave troubleshooting described in the HP 8971C service manual. The microwave circuitry in the 8971C test set consists of a number of paths selected with relays. These
By Matt Huszagh · #126877 ·
Re: New file: Sprague capacitor types in files
It was moved to: /g/HP-Agilent-Keysight-equipment/files/Catalogues/Components%20Catalogues/Sprague%20Capacitors
By Michael A. Terrell · #126876 ·
Re: HP 8116A woes with E42 error
On Sun, Jun 5, 2022 at 12:34 AM, Swiss wrote: Hi David, Congratulations on the fix and thanks for letting us know. Re. calibrating, you have to realize that apart from controls and display, there's
By Raymond Domp Frank · #126875 ·
Re: 70900A Power Supply Capacitors Removed #photo-notice
Have the replacment Capcitors foxt the problem Regards Paul
By Paul Bicknell · #126874 ·
hp 5480A/5485A/5486A Signal Analyzer
Hello All, I am searching for anything of and for an hp 5480A/5485A/5486A Signal Analyzer system circa November 1968. Has anyone worked with this machine? For anyone having experience in signal
By Christopher Tucker · #126873 ·
Re: HP 8970B battery backup troubleshooting
You may just have it done, then. Harvey
By Harvey White · #126872 ·
HP 8970B System Check
I have an HP 8970B noise figure meter, HP 8971C test set and HP 8340B that I'm using as the local oscillator. I'd like to verify the operation of the 8971C, which I purchased used. To do that, I'm
By Matt Huszagh · #126871 ·
Re: HP 8116A woes with E42 error
Ozan and Raymond, Q502 was it. Emitter-base junction was wide open.? Replaced it with the most similar PNP I could find in a 2n5771. E42 error is gone, and I have a full sine wave at both full
By Swiss · #126870 ·
Re: HP 8662A - alternative attenuator configurations, 8663A Last Rev Mnl
"Michael Bierlein via groups.io" <bierl008@...> writes:
By Matt Huszagh · #126869 ·
Re: HP 8662A - alternative attenuator configurations, 8663A Last Rev Mnl
I would be open to scanning the manuals for free if we could put them on archive.org (not necessarily on my archive.org account). I am NOT a pro but I've scanned a bunch of large manuals for old Ampex
By Michael Bierlein · #126868 ·
Re: HP 8662A - alternative attenuator configurations, 8663A Last Rev Mnl
Don't disagree, just trying to make the problem a bit more quickly solvable. I use this with most of my PDF manuals. I print the schemats full sized when needed and keep the collection. I can always o
By Bruce · #126867 ·
Re: HP 8662A - alternative attenuator configurations, 8663A Last Rev Mnl
"Bruce" <bruce@...> writes: In theory, yes, but I think it's preferable to scan the entire manuals for 2 reasons: 1. The rest of the pages are easy to scan and it would be nice for all the
By Matt Huszagh · #126866 ·