Re: Capture from HP4192A and plot
I should point out to the curious that the plot shows the Maxwell-Wagner effect due to the water sample being in a ziplock bag and placed between the capacitor plates. Goggle Maxwell-Wagner.
On Tue, Apr 23, 2019 at 3:40 PM peter bunge via Groups.Io <bunge.pjp= [email protected]> wrote: I have just uploaded a file "Capture and Plot from HP Test Equipment" to the files section.
It takes you step by step through acquiring the data, massaging it, and plotting it.
Older equipment such as the HP4191A, 4192A, and 4193A do not have built in plotting to a 7470A plotter so John Miles emulator does not work with them.
I am using a very simple method that requires little or no programming experience. I use a Prologix GPIB to USB to connect to my HP test equipment. I then use Ulrich Bangert's EZGPIB to acquire the data, Notepad++ to massage the data because it can select, copy, and move columns. I then use Ulricht's DF6JB Plotter to make the plots. Unlike Excel the plotter is easy to use and can export a picture in .bmp (2.5 MB) or .emf (50 kB) pictures which can be pasted into a document. The .emf will not paste here or to gmail but will paste into MS Word. The picture below is the example in my uploaded note and is a .bmp file.
I would like to hear from anyone who can get a left and right axis working on the DF6JB Plotter or any other. Sometime it is nice to display Magnitude and Phase from the Impedance Analyzers. In the same folder is another file that explains how I have managed to do this but I am not happy with the methods.
The DF6JB Plotter is easy to use and two traces with the same left scale can be plotted for comparison. The plotter has buttons for a right hand axis but I cannot get it to work. Unfortunately Ulricht is no longer with us. The plotter should be available on the Prologix site but if not drop me an email. PeterB
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Re: HP 34401A repair and calibration
What is the recommended calibration schedule for wives?
Peter
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On Apr 23, 2019, at 3:26 PM, mike bryce <prosolar@...> wrote:
This is going to sound silly, but this multimeter was a wedding gift from my wife, so it isn’t really only a piece of test gear
I’d like to keep it, but with a new display and calibration
mike
On Apr 23, 2019, at 3:23 PM, Steve - Home <steve-krull@...> wrote:
Mike,
As in all things it depends on how much you want to spend. Keysight still supports the 34401A - unit exchange is $768 and I believe that includes calibration. Calibration is also still available at about $230ish.
I ordered the display PCA from Keysight and replaced it easily enough. There are also aftermarket suppliers offering them on eBay but I went with Keysight as I needed some other parts as well.
Mine still compares close enough with my 3458A so I passed on calibration for now.
Steve
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Capture from HP4192A and plot
I have just uploaded a file "Capture and Plot from HP Test Equipment" to the files section. It takes you step by step through acquiring the data, massaging it, and plotting it. Older equipment such as the HP4191A, 4192A, and 4193A do not have built in plotting to a 7470A plotter so John Miles emulator does not work with them. I am using a very simple method that requires little or no programming experience. I use a Prologix GPIB to USB to connect to my HP test equipment. I then use Ulrich Bangert's EZGPIB to acquire the data, Notepad++ to massage the data because it can select, copy, and move columns. I then use Ulricht's DF6JB Plotter to make the plots. Unlike Excel the plotter is easy to use and can export a picture in .bmp (2.5 MB) or .emf (50 kB) pictures which can be pasted into a document. The .emf will not paste here or to gmail but will paste into MS Word. The picture below is the example in my uploaded note and is a .bmp file. I would like to hear from anyone who can get a left and right axis working on the DF6JB Plotter or any other. Sometime it is nice to display Magnitude and Phase from the Impedance Analyzers. In the same folder is another file that explains how I have managed to do this but I am not happy with the methods. The DF6JB Plotter is easy to use and two traces with the same left scale can be plotted for comparison. The plotter has buttons for a right hand axis but I cannot get it to work. Unfortunately Ulricht is no longer with us. The plotter should be available on the Prologix site but if not drop me an email. PeterB 
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Re: HP 34401A repair and calibration
On Tue, Apr 23, 2019 at 3:26 PM mike bryce < prosolar@...> wrote: This is going to sound silly, but this multimeter was a wedding gift from my wife, so it isn’t really only a piece of test gear
I’d like to keep it, but with a new display and calibration
Congrats on 15 years of marriage - she sounds like a woman after my heart :). I saw a thread on the EEVBlog where people have found a source for the display at $30 or so:?
.
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Re: HP 34401A repair and calibration
This is going to sound silly, but this multimeter was a wedding gift from my wife, so it isn’t really only a piece of test gear
I’d like to keep it, but with a new display and calibration
mike
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Show quoted text
On Apr 23, 2019, at 3:23 PM, Steve - Home <steve-krull@...> wrote:
Mike,
As in all things it depends on how much you want to spend. Keysight still supports the 34401A - unit exchange is $768 and I believe that includes calibration. Calibration is also still available at about $230ish.
I ordered the display PCA from Keysight and replaced it easily enough. There are also aftermarket suppliers offering them on eBay but I went with Keysight as I needed some other parts as well.
Mine still compares close enough with my 3458A so I passed on calibration for now.
Steve
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Re: HP 34401A repair and calibration
Mike,
As in all things it depends on how much you want to spend. Keysight still supports the 34401A - unit exchange is $768 and I believe that includes calibration. Calibration is also still available at about $230ish.
I ordered the display PCA from Keysight and replaced it easily enough. There are also aftermarket suppliers offering them on eBay but I went with Keysight as I needed some other parts as well.
Mine still compares close enough with my 3458A so I passed on calibration for now.
Steve
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On Apr 23, 2019, at 12:51 PM, mike bryce <prosolar@...> wrote:
骋补苍驳….
the subject line says it all.
My go to bench multimeter hasn’t been calibrated since I purchased it new 15 years ago.
During that time, it has worked perfectly. Still does…
however the display has gotten so dim, it’s hard to see. The display needs replaced
so, anyone know of a place that will replace the display and calibrate this meter?
Thanks..
mike
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HP Schottky Diode 1901-0533
Does anyone have data on HP part #1901-0533? ?It's a small-signal schottky diode, used in the 8016A. ?I've looked at several HP cross-ref guides online, but it isn't listed.
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Re: HP 34401A repair and calibration
Mike,
Keysight still sells the display. Bought one recently for about �150 in Europe. I did the repair myself. I am sure Keysight can calibrate your instrument. At 10V mine is within 40 microvolts.? Good luck,?
Op di, apr. 23, 2019 om 18:51 schreef mike bryce <prosolar@...>: 骋补苍驳….
the subject line says it all.
My go to bench multimeter hasn’t been calibrated since I purchased it new 15 years ago.
During that time, it has worked perfectly. Still does…
however the display has gotten so dim, it’s hard to see. The display needs replaced
so, anyone know of a place that will replace the display and calibrate this meter?
Thanks..
mike
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HP 34401A repair and calibration
骋补苍驳….
the subject line says it all.
My go to bench multimeter hasn’t been calibrated since I purchased it new 15 years ago.
During that time, it has worked perfectly. Still does…
however the display has gotten so dim, it’s hard to see. The display needs replaced
so, anyone know of a place that will replace the display and calibrate this meter?
Thanks..
mike
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HP1345A display: parts mule or parts wanted
I'm looking for either the A1 board (XYZ/ stroke generator) or just the HP IC's on that board which are socketed (1NB4-5003, 1NB4-5004).? Or can someone point me to another source??
Thanks
John
(As used in HP3577 and 3262A etc)
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Re: Clarification : Brass gears for the 8640B
?For what it's worth, Ram,?the quote doesn't sound pejorative to my ears. ?If?your gears are molded, and from India, then certainly they are "molded gears from India", just?as the others, being brass and from the USA, are "brass gears from USA".
Regards,
Dave Wise
Disclaimer: Haven't shopped for gears - I repaired mine and they seem to be holding.
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Folks,
Many of you are? aware that I have been selling replacement brass gear sets for the 8640B on eBay for quite a while now. I happened to notice that someone referred to my gears in a recent post which said "I produce them from brass.? These are not the molded
gears from India I have seen advertised recently. They are produced from American manufacturers brass blanks."
Please do not spread misinformation about others' offerings here. I am not in competition with anyone here, and I'm doing this out of my passion for a piece vintage equipment. If you have better gears to offer, by all means do, but please keep malice and misinformation
out of the picture. (It may also help you look less foolish.)
Thank you! - Ram
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Re: HP3457A missing power button
I haven't intentionally power cycled my 3456A's in about
10 years. Periodically, I have to repair something, or we
have a power outage, but that is it.
-Chuck Harris
Kevin Oconnor wrote:
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“Ahhhhh... Wait! You power cycle your 3457A???
-Chuck Harris”
Ha Ha! Not now I don’t. The button plunger is stuck in the ON position against the inside of the front panel! Have to power cycle with the AC plug.
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Clarification : Brass gears for the 8640B
Folks,
Many of you are? aware that I have been selling replacement brass gear sets for the 8640B on eBay for quite a while now. I happened to notice that someone referred to my gears in a recent post which said "I produce them from brass.? These are not the molded gears from India I have seen advertised recently. They are produced from American manufacturers brass blanks."
Please do not spread misinformation about others' offerings here. I am not in competition with anyone here, and I'm doing this out of my passion for a piece vintage equipment. If you have better gears to offer, by all means do, but please keep malice and misinformation out of the picture. (It may also help you look less foolish.)
Thank you! - Ram
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Re: HP3457A missing power button
It is the same as the one on a 3468A, so that 3D printed part should work.
I have a printer; I’ll try printing one and see how well it fits my 3468A. I won’t be able to match the color, but I might have something close.
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On Apr 22, 2019, at 21:02, Dave McGuire <mcguire@...> wrote:
On April 22, 2019 9:52:09 PM "Kevin Oconnor" <kjo@...> wrote:
If it's the same size button as the 3468A/3478A, there's a 3D printable part which will do the job. I’ll take a look at the file but I’m not into 3D printing.
I was hoping someone would know an available switch brand cap that would fit.
What is at the front panel is actually just a pushrod. HP lists the key cap for the pushrod as an HP sourced #0370-0603.
Your will not find a switch cap from another manufacturer that will fit. These caps were made by HP for their own use.
They do show up on eBay on occasion; expect to pay about $15-$20.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
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Re: HP3457A missing power button
On April 22, 2019 9:52:09 PM "Kevin Oconnor" <kjo@...> wrote: If it's the same size button as the 3468A/3478A, there's a 3D printable part which will do the job. I’ll take a look at the file but I’m not into 3D printing.
I was hoping someone would know an available switch brand cap that would fit.
What is at the front panel is actually just a pushrod. HP lists the key cap for the pushrod as an HP sourced #0370-0603.
Your will not find a switch cap from another manufacturer that will fit. These caps were made by HP for their own use. They do show up on eBay on occasion; expect to pay about $15-$20. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
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Re: HP3457A missing power button
Re: HP3457A missing power button?
From:?gregdunn@...
Date: Mon, 22 Apr 2019 11:10:42 PDT?
If it's the same size button as the 3468A/3478A, there's a 3D printable part which will do the job. |
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I’ll take a look at the file but I’m not into 3D printing. I was hoping someone would know an available switch brand cap that would fit. What is at the front panel is actually just a pushrod. HP lists the key cap ?for the pushrod as an HP sourced #0370-0603.
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Re: HP3457A missing power button
“Ahhhhh... Wait! You power cycle your 3457A???
-Chuck Harris”
Ha Ha! Not now I don’t. The button plunger is stuck in the ON position against the inside of the front panel! Have to power cycle with the AC plug. |
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Re: Make backup PCMCIA card for E8285A?
Hi,
The mian issue is having software that works in linear mode. I use Windows 98 or XP and ELAN MCE. Not sure if MCE will work under Windows 3.1
Robert.
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Re: HP 3330B Logic boards
Hi Jeff, ? Could you contact me off-list I’ve tried to send you a PM but your mail is masked on groups.io and the only other address I have is your paypal address. You can reach me on hp-fix_ad_xs4all.nl ? -Rik ?
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Van: [email protected] < [email protected]> Namens Jeff Kruth via Groups.Io Verzonden: donderdag 18 april 2019 14:00 Aan: [email protected]Onderwerp: Re: [HP-Agilent-Keysight-equipment] HP 3330B Logic boards ? I am about to begin the process of scrapping two complete 3330B units for gold content. Let me know if you dont find what you need.? I gave up trying to find a home for these. I used to have the complete setups with the 5370 NA and 5371 SA. In a message dated 4/16/2019 2:57:06 PM Eastern Standard Time, hp-fix@... writes: I’ve acquired a nice HP 3330B Automatic Synthesizer after some testing it started up with a wrong value on the amplitude display. Some testing revealed some other quirks when I want to alter the frequency it displays the input on the amplitude display and changing the frequency and amplitude with the up down keys also gives strange results on the display, also some other keys don’t work as they should. After some searching, I’m convinced something is wrong in one of the processor boards. I’ve looked with the logic analyzer and can see the logic is starting up as it should it follows the state diagrams in the same order as in the service manual.
I’ve tested measured a lot and can’t find the fault at the moment, so I’m looking for a working set of logic board (A7 ALU board and A8 control board) and if some body have them an image of the control roms (4 x 256bit ROMS) so I can check these against the images I’ve made of my ROM’s (82S126 compatible). If someone has a set of boards ?(A8, HP 03330-66575 and A7, HP 03330-66507) and/or the rom images, that would be very nice and should make me possible to fix the 3330B so I can use it in conjunction with the HP3570A to restore a HP 3041A VNA. ? -Rik ?
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John Sykes
Dave McGuire
Rik Bos