Looking for service manual/schematic for early E3611A DC Power Supply
Hi,
?
I'm currently repairing an early HP branded model E3611A DC Power Supply to give to a friend, but the schematic from the usual online sources is for later models that differ in some parts (notably around the area I am trying to repair....)
?
Does anyone have a copy of the service manual for early HP units they can share? I just need the schematic and parts listing in particular.
?
?
?
Thanks!
Jared
|
Re: ftp.agilent.com tar-file on archive.org
On Thu, 15 May 2025, Wolfgang Schraml via groups.io wrote: I've just downloaded the entire thing. No problems encountered. Thanks. I'll give that a try.
Wolfgang
========================================
On Thu, May 15, 2025 at 01:05 PM, Razvan Popescu wrote:
I download the whole archive a few years ago. I also had issues with the
download at that time but it was easy to resume the download because I
started it using "wget".
If you don't have a Linux box you can use the wget for Windows in a
Command Prompt window.
You can download from here the latest wget binary for Windows.
Use the following command:
wget -c
Best regards,
Razvan
On 15/05/2025 19:25, Wolfgang Schraml via groups.io wrote:
The Internet Archive has what appears to be a snapshot of
ftp.agilent.com from 2014. Link is
ftp.agilent.com < >.
The file is rather large (317GB) and an attempt to download failed after
approximately 220GB. I don't want to blow my monthly data plan and thus
decided to wait a little before attempting it again.
The Internet Archive allows the download of individual files from the
tar-ball, but I'd rather have a replica of the whole site to browse and
explore locally.
Has anyone successfully downloaded this tar file? Don't want to waste
time and bandwidth if the file is known to have issues.
Thank you,
Wolfgang
KI7PFX
--- * * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < > Miracles require 24-hour notice. * *
|
Re: HP3582a problem no chanel 2
I also vaguely recall that there is a front panel screw driver overload adjust pot for each channel. Do check the OP/Serv manual for the front panel controls, setup, and calibration (adjustment).
Don Bitters
|
Re: HP3582a problem no chanel 2
I am no expert on the 3582A, but check the motherboard sockets, the brd connectors any cabling to the input cards, and the circuit that comes after the input card, and the input control circuitry. I suspect you are seeing a DC level somewhere on the input circuitry after the input card that should not be there.
Don Bitters
|
IIRC II is probably found in the IF A3 section, the video processor or detector.
Do you have a problem? What are your symptoms? If you are asking after the video digital sweep vs. the analog sweep, then look @ A3A8 brd and the EOS (End Of Sweep) sweep circuitry.
Don Bitters
|
Re: ftp.agilent.com tar-file on archive.org
Thanks. I'll give that a try.
?
Wolfgang
?
========================================
?
On Thu, May 15, 2025 at 01:05 PM, Razvan Popescu wrote:
I download the whole archive a few years ago. I also had issues with the
download at that time but it was easy to resume the download because I
started it using "wget".
If you don't have a Linux box you can use the wget for Windows in a
Command Prompt window.
You can download from here the latest wget binary for Windows.
Use the following command:
wget -c
Best regards,
Razvan
On 15/05/2025 19:25, Wolfgang Schraml via groups.io wrote:
The Internet Archive has what appears to be a snapshot of
ftp.agilent.com from 2014. Link is
ftp.agilent.com <>.
The file is rather large (317GB) and an attempt to download failed after
approximately 220GB. I don't want to blow my monthly data plan and thus
decided to wait a little before attempting it again.
The Internet Archive allows the download of individual files from the
tar-ball, but I'd rather have a replica of the whole site to browse and
explore locally.
Has anyone successfully downloaded this tar file? Don't want to waste
time and bandwidth if the file is known to have issues.
Thank you,
Wolfgang
KI7PFX
?
?
|
Question: Is there a correct* way to get an HP T141/855X Spectrum Analyzer to sweep logarithmically? (* as in: HP provided specific instructions/equipment for this)
(Bear with me, I¡¯m still learning how to use this platform)
?
I¡¯m primarily interested in obtaining logarithmic sweeps/bode plots while using my 8556A audio frequency plugin and 8570A Storage Normalizer specifically for audio amp, loudspeaker, and crossover characterizations. Its native linear sweep/plotting makes it incredibly difficult to distinguish things at the low end of the frequency range; effectively prohibiting one from gathering useful data from a single 20Hz - 20KHz pass (I instead have to break up the single measurement into multiple, across smaller ranges¡ a very inconvenient endeavor).
Did HP ever publish any sort of instructions or app notes that address this? Did they produce any accessories/equipment specific for this?
?
I understand there were logarithmic converters available for XY plotters, but I¡¯ve yet to get any confirmation as to whether or not they would be best applicable to my specific needs, and/or how they would work in conjunction with the 8570 normalizer.
?
Thoughts? Recommendations?
Thanks-
|
Re: Twelve(+/-) bins of original HP/Agilent manuals free for pickup in San Diego
I'm resurrecting this thread as I've taken a chunk of these manuals at that time with the intention of figuring a way to scan them or make them available some other way. In the meantime, my storage capabilities have (just) diminished,?and I'm not sure when I'd be able to do?anything with these. I'm looking for another custodian in the LA metro area.
Anyone willing to take these? We're talking about four or so boxes 21"x16"x15".?
Greetings, Stan,
?
Would you have any power supply-related documentation?
I'm in town.
?
Thanks.
Sam
|
Re: ftp.agilent.com tar-file on archive.org
I'm not sure, but the older versions are much smaller in size at maybe 100Mb.
On the wayback machine, all the older 78xxA downloads show up as access forbidden.
It is still possible to get the main 7800A SW but all the instrument specific programs (eg for PSA, ESA, PSG etc) report as access forbidden.
?
I'm not sure what this means. I know that it wasn't always like this, because I can remember downloading some of them maybe 7 years back on the wayback machine and I was pleased that this was possible. However, when I look at the same archive today (same archive date) they are all causing an access forbidden message. None of them can be downloaded today so something has changed.
?
--
Regards
Jeremy
|
Re: ftp.agilent.com tar-file on archive.org
Hi Jeremy,
I am also looking for the N78xx software but from what I know all versions need a license. Or this not valid for the older versions and only new ones need the license?
Regards,
Razvan
toggle quoted message
Show quoted text
On 15/05/2025 20:23, jmr via groups.io wrote: Thanks for this. There's lots of useful stuff there.
Does anyone have a link to an older archive of the Agilent website that might still have the N7810A calibration SW for the old E4440A spectrum analyser? I'm thinking in terms of the Win 98SE through to XP era. I managed to find lots of N78xx SW for other items of test gear on the Wayback Machine from this era but not the N7810A SW as the Wayback Machine didn't store this for some reason.
I know there are newer versions of N7810A available from Keysight but I wanted the older version from the Win XP era.
--
Regards
Jeremy
|
Re: ftp.agilent.com tar-file on archive.org
Thanks for this. There's lots of useful stuff there.
?
Does anyone have a link to an older archive of the Agilent website that might still have the N7810A calibration SW for the old E4440A spectrum analyser? I'm thinking in terms of the Win 98SE through to XP era. I managed to find lots of N78xx SW for other items of test gear on the Wayback Machine from this era but not the N7810A SW as the Wayback Machine didn't store this for some reason.
?
I know there are newer versions of N7810A available from Keysight but I wanted the older version from the Win XP era.
?
--
Regards
Jeremy
|
Re: ftp.agilent.com tar-file on archive.org
I download the whole archive a few years ago. I also had issues with the download at that time but it was easy to resume the download because I started it using "wget".
If you don't have a Linux box you can use the wget for Windows in a Command Prompt window.
You can download from here the latest wget binary for Windows.
Use the following command:
wget -c
Best regards,
Razvan
toggle quoted message
Show quoted text
On 15/05/2025 19:25, Wolfgang Schraml via groups.io wrote: The Internet Archive has what appears to be a snapshot of ftp.agilent.com from 2014. Link is ftp.agilent.com <>.
The file is rather large (317GB) and an attempt to download failed after approximately 220GB. I don't want to blow my monthly data plan and thus decided to wait a little before attempting it again.
The Internet Archive allows the download of individual files from the tar-ball, but I'd rather have a replica of the whole site to browse and explore locally.
Has anyone successfully downloaded this tar file? Don't want to waste time and bandwidth if the file is known to have issues.
Thank you,
Wolfgang
KI7PFX
|
ftp.agilent.com tar-file on archive.org
The Internet Archive has what appears to be a snapshot of ftp.agilent.com from 2014. Link is .
?
The file is rather large (317GB) and an attempt to download failed after approximately 220GB. I don't want to blow my monthly data plan and thus decided to wait a little before attempting it again.
The Internet Archive allows the download of individual files from the tar-ball, but I'd rather have a replica of the whole site to browse and explore locally.
?
Has anyone successfully downloaded this tar file? Don't want to waste time and bandwidth if the file is known to have issues.
?
Thank you,
Wolfgang
KI7PFX
|
Oh, you know what. I missed that the display is for a "B" model. Sorry, I don't have one.
?
Dave - W6TE
DXCONNECTION
|
I appreciate all the input on the replacement.? Under the circumstances I am going to see if I can avoid replacing this part as I do not have the facilities, or the nerve, to fiddle with EPROMs.? My new concern is replacing A1C19, the Sprague 3900uF cap.? Mine let go yesterday in spectacular fashion, magic smoke, magic goo, you name it.? I have not traced the failure to any other component,. yet, but I still need the cap.
?
Thanks and cheers,
--
Joe White
KW4YW
|
Excellent teardown and photos!
The service manual does list A1U19, the Executive microprocessor, as two items; the microprocessor and UVPROM, those have different part numbers. MK38P70/02D and MBM27C64-25. HP seems to have retained that. Yours also has a newer firmware than mine (05334-8003).
There are two additional piggybacked microprocessors in my counter, the Measurement microprocessor U29 and the HPIB processor U17. Both seem to have been swapped out for mask ROMs at some point in the production run. They're both the /02H variant of the Mostek with a TI TMS2532JL-45 on top.?
I'm not sure exactly when my counter was manufactured but it's filled with 1983 date codes on all the ICs.
?
I remember that in my 5334A, the PROM was stacked on the processor. It was nothing special, just a 27C64. I have the PROM dump, it will take a few days to find the file and upload it - please wait.
?
?
?
|
For the option 010 you might look at this item.
Greg
|
Ed,
?
I remember I found an Easter egg in the PROM of the 5334A (this is a picture from a few years ago):? you can see the name of the programmer in the ROM. Shalom Kattan, who later founded Carmel instrumens.
?
|
?
I remember that in my 5334A, the PROM was stacked on the processor. It was nothing special, just a 27C64. I have the PROM dump, it will take a few days to find the file and upload it - please wait.
?
?
?
|
Jim,
That is a truly fascinating bit of information, and thank you for sharing it. It makes sense that HP would eventually replace the microprocessor and UVPROM with a more cost effective mask ROM, assuming a large enough production quantity. I suspect that may be the case with this counter, given the service manual designating a single part number and the original question that started this thread. Good for HP's bottom line at the time, not so much for repairability years on down the line.
If that's the case then I think there's a unique opportunity here. There's a known microprocessor presumably with a documented instruction set, and a UVPROM that can be read. On the other hand, reading the contents of a mask ROM is possible but not as easily as this. From there, if parts are not available, it's not unreasonable to port the fimrware to a modern replacment to repair an instrument.
That motivates me to extract and archive the contents. I'll have to read the datasheet and possibly wire up an adapter for my EEPROM programmer. If I can safely read the contents of this UVPROM, and the others in my counter, I will do so and make the contents available.
|
Jared Cabot
Sergey Kubushyn
Dave Smith