Have you looked in the ????(? The YIG ?) ?folder on this sight ? ? ? ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Steve J. Noll, WA6EJO via groups.io
Sent: 19 May 2025 18:11
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] YIG Oscillator Info? ? I have these three HP YIGs to check out. I find zero info on them online. I found the "Operating and Service Manual" for a network analyzer one of them came from... no schematics! (How can a "Service" manual not have schematics?!)? The YIGs: 5086-7538, 5086-7323, and 5086-7268. They have IC sockets for interface so I'm looking for info on what I have to hook up to make them work. All I know is I think they need +20V and -10V, but nothing more. ?? 73, Steve WA6EJO
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also search this group's archive, this exact question has come up multiple times even just these past few months.
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I have these three HP YIGs to check out. I find zero info on them online. I found the "Operating and Service Manual" for a network analyzer one of them came from... no schematics! (How can a "Service" manual not have schematics?!)? The YIGs: 5086-7538, 5086-7323, and 5086-7268. They have IC sockets for interface so I'm looking for info on what I have to hook up to make them work. All I know is I think they need +20V and -10V, but nothing more. ?? 73, Steve WA6EJO
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Re: how to convert HP83711B to 83712B!
On Mon, May 19, 2025 at 04:30 AM, Ed Marciniak wrote:
I wonder if a dump of the EPROMs would show any interesting SCPI strings that might involve writing to the EEPROM so the coefficients could be written without disassembly while also calculating the checksums.
Indeed, there are such SCPI strings but I couldn't get them working properly as the arguments for those commands are unclear. I did write a software which allows to modify a given EEPROM binary which also automatically updates the checksums. If useful I can upload it.
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Tom
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Re: how to convert HP83711B to 83712B!
On Sun, May 18, 2025 at 01:02 PM, Sven Schnelle wrote:
One the 8375X series, there's a attenuator calibration table to
compensate each attenuator setting. Does the 8371X have such tables?
Yes it does, and I did re-calibrate them as described by Staffan's document.
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Tom
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Re: how to convert HP83711B to 83712B!
Nice work!? The 83712Bs are less common and more expensive, so that¡¯s a very worthwhile upgrade.? I can see how the empty space reserved for the low-band board was an irresistible temptation. ? And thanks for the heads-up on the Skyworks diode.? HP failures are one thing, but those guys evidently had an HR failure¡ ? -- john, KE5FX ?
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From: [email protected] <[email protected]> On Behalf Of tom_iphi via groups.io
Sent: Saturday, May 17, 2025 2:03 AM
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] how to convert HP83711B to 83712B!? I have converted my HP83711B signal generator into an HP83712B and have added options. Maybe useful to someone or just fun to read.
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I do have a DIY replacement oscillator for the 5334A and 5334B.
If interested contact me off group.
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ed
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Re: how to convert HP83711B to 83712B!
I wonder if a dump of the EPROMs would show any interesting SCPI strings that might involve writing to the EEPROM so the coefficients could be written without disassembly while also calculating the checksums.
There had to have been service software running on a 9845 or a series 200/300 system for factory setup. I suspect it¡¯s not available, but the books left behind for it to run are likely there if found.
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"tom_iphi via
<iphi@...> writes:
> Hi folks,
>?
> I have converted my HP83711B signal generator into an HP83712B and
> have added options.
> See here how I did it:
>
>
> Maybe useful to someone or just fun to read.
Thanks a lot, very interesting read!
I also upgraded my 83752B with a 24V step attenuator, while the original
one uses 15V. Also seems to work fine.
One the 8375X series, there's a attenuator calibration table to
compensate each attenuator setting. Does the 8371X have such tables?
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Re: HP 10525H Logic Probe
Hi , the hp10525H looks different of the T version , different pcb and some components .
Regards
Maurizio
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File /All HP, Agilent and Keysight instruments in folders by part numbers/5000 to 5999/HP 5334A Universal Counter/HP_5334A_ROM_05334-80011.zip uploaded
#file-notice
The following items have been added to the Files area of the [email protected] group.
By: BI4LBK <chrispotma@...>
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The ROM dump of the HP 5334A has been uploaded:
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/g/HP-Agilent-Keysight-equipment/files/All%20HP,%20Agilent%20and%20Keysight%20instruments%20in%20folders%20by%20part%20numbers/5000%20to%205999/HP%205334A%20Universal%20Counter
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Re: HP 10525H Logic Probe
I was just about to post my copy of the same manual, but paused: I the HP 10525T the same as the HP 10525H requested by the OP?
~~
Mark
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Re: Sphere Inc's HP (and Tektronix) Parts Inventory - tekandhpparts.com
Tom, It's a monumental task, I know. I've been contemplating?building a website for something similar to this, and my cogs have come to a grinding?halt several times.? I command your efforts with this! And I, and I'm?sure others, will be happy to help any way we can.? Radu.?
Thank you for the suggestion Radu.? We agree completely and it is on the "to do" list once we get reasonably close to completing a first pass inventory.? In the meantime, I'm happy to go snap a picture for anyone needing it.
?
Regards,
Tom
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Re: Sphere Inc's HP (and Tektronix) Parts Inventory - tekandhpparts.com
Excellent.
Thanks for doing this. I wanted to get up to Kelowna for many years - I almost made it during a business trip to Vancouver. The store of parts and slide rules at Sphere have saved my butt several times.
Hi Dave,
?
Post on TekScopes2 going up now.? Thanks for the reminder.
?
Regards,
Tom
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Re: Sphere Inc's HP (and Tektronix) Parts Inventory - tekandhpparts.com
Hi Dave,
?
Post on TekScopes2 going up now.? Thanks for the reminder.
?
Regards,
Tom
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Re: Sphere Inc's HP (and Tektronix) Parts Inventory - tekandhpparts.com
Thank you for the suggestion Radu.? We agree completely and it is on the "to do" list once we get reasonably close to completing a first pass inventory.? In the meantime, I'm happy to go snap a picture for anyone needing it.
?
Regards,
Tom
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Hi David,
?
Schematics are available (the CLIP from Artek under E4401B) but they only have ONE of the (at least) two versions of the RF Deck. The version in the CLIP is the same as that documented in the Signal Path video. The CLIP says the assy# is E4403-60057. So you should check yours prior to purchasing. As far as I know, schematics for the newer versions are not available.
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Good luck!
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Mark
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Re: HP 8568B Instr Check Light?
Just a follow up.? I finally picked up the unit today for $190.? Turns out you guys nailed it.? The 50 pin connector was broken and the seller probably did not have it seating properly.? I fixed the connector up a little to get the pins in order, carefully plugged the units together, and it is working.? Looks like the connector is available for about $20, so I will be ordering one.?
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It is a nice clean unit.?
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Re: how to convert HP83711B to 83712B!
"tom_iphi via groups.io" <iphi@...> writes: Hi folks,
I have converted my HP83711B signal generator into an HP83712B and
have added options.
See here how I did it:
/g/HP-Agilent-Keysight-equipment/files/All%20HP,%20Agilent%20and%20Keysight%20instruments%20in%20folders%20by%20part%20numbers/A%2080000%20to%2089999/83711B%20and%2083712B%2020GHz%20signal%20generators/HP83711B_to_HP83712B.pdf
Maybe useful to someone or just fun to read. Thanks a lot, very interesting read! I also upgraded my 83752B with a 24V step attenuator, while the original one uses 15V. Also seems to work fine. One the 8375X series, there's a attenuator calibration table to compensate each attenuator setting. Does the 8371X have such tables?
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Re: Sphere Inc's HP (and Tektronix) Parts Inventory - tekandhpparts.com
Did you send this message to the TekScopes2 forum as well? I haven't seen this on that forum.
As many may remember, Walter Shawlee II passed away September of 2023.? Since that time, his wife Susan, and children, have been busying themselves with the task of liquidating much of the electronic goodness that Sphere Research had accumulated.? Susan intends to continue to make their collection of slide rules, nixie tubes and various other items available.? Additionally, she is continuing in her effort to find homes for the remaining equipment.? Please do visit Sphere¡¯s site and help.
Sphere¡¯s inventory of Tektronix and HP parts has found a new home with us.? We have the beginnings of a website (), with the intention of continuing to make these parts available to the Tek and HP enthusiast community.
A bit about us:
1)? The goal of the website is to continue to make Sphere¡¯s inventory available to the people like us that enjoy collecting, repairing and making use of these amazing examples of engineering and manufacturing.
2)? A secondary goal is to ¡°pay back¡± our retirement account of the funds used to buy the parts.? It is truly secondary, and may never happen, but who knows?
3)? We are retired, have three children, farm 20 acres of grass hay, tend to cows, sheep, horses and chickens, and have FAR too many hobbies and other responsibilities to have taken on another, but here we are¡.?
4)? Our website is an amateur work in progress.? Please read the home page posts for information on the site and on our progress.? Tek items will be posted first, followed by HP and then ¡°other¡± semiconductors and who knows what else. ?There is much awaiting inventorying, so if you don¡¯t see the part you are interested in, please contact us directly (tom@...) and we will let you know if we have it.? Also, items showing zero inventory are just awaiting an accurate count, so please inquire if you need something showing zero inventory.? Look for announcements on the homepage as we complete the inventorying and pricing of each group of parts.? Please be patient as we get the website, inventory and pricing figured out.? Feedback is, as they say, a gift, so please share any constructive advice or suggestions for the site that you may have.? The suggestion "You should have your head examined" has already been given!? :)
We can¡¯t ever hope to duplicate the knowledge that Walter possessed, but will do our best to provide you with the right parts for your project.? We look forward to getting to know our new customers, and will work hard to earn your trust.?
Thank you,
Tom and Darla Norman
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Paul Bicknell
fenugrec
Steve J. Noll, WA6EJO