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98034A HPIB adaptor for 9825

 

All,
I have unearthed a 98034A HPIB adaptor for the 9825 calculator.
I will also post in the for sale group but have seen people discuss such items on here to so hope admins will allow this indiscretion.
I don¡¯t have anything else related to this unit - although there appears to be plenty on the web.
Looks in good condition - although I am unable to test it.
If anyone would like to make me an offer for it, based in uk.
Regards
Nigel

Sent from my iPad by banging a nail into a piece of wood...
HP8903A serial prefix 2414A service manual

 

Hi all!

I have an 8903A (with faults) and have been using the online edition of the 8903A manual (covering 1942A-2016A) fine for the CPU/latch/oscillator boards, but in the next stage of fault finding I need to look at the A6 oscillator amps / attenuators board and this is significantly different from the one illustrated (it has 3 relays). There is an online?8903B manual for 2450A to 2948A.

Board is 08903-60105?

The one in the 8903A manual?is 08903-60008 and the one in the 8903B is very different (08903-60132) the latter uses DACs as programmable amplifiers feeding signal in as VREF, the one I have appears to use JFETs to switch Rs in an opamp circuit.

Does anyone?know of the existence of a manual covering?2414A - or possibly revisions sheets explaining what changed? Would also be interested to know why... but that is probably too much to hope for!? If a real manual rather than electronic it would be the A6 board?I would like to know about (service sheets 10 & 11) even just schematics.

Alan Bain
P.S. Faults so far include dead F8 CPU, a mask ROM 4 which output data when OE was high causing RAM test errors, leaky caps in sample and hold (C45/C39). Leaky electrolytics on A3 board on supply rails.To fix remains oscillator distortion too high; output level too high when 3V RMS from osc board. AC RMS meter?seems to work, notch filter not tested.
Not H-P, But definately about scopes: WTB Philips PM-3000/3010

 

¿ªÔÆÌåÓý

Mini oscilloscopes are one of my collecting and restoration interests.? I am looking for a Philps PM-3000 or 3010. Need not be working, completeness is important.? AND- I am still looking for a Tektronix 224 handheld scope at a reasonable price. Thanks,

?? Bruce Gentry, KA2IVY

Added album HP-5347/48A and HP-5361A Coffee mug #photo-notice

[email protected] Notification
 

Jeremy Nichols <jn6wfo@...> added the album HP-5347/48A and HP-5361A Coffee mug: ¡°Two instruments in one.¡± Promotional item from the 1970s. Images appear when hot liquid is poured into the mug. My error was putting the mug in the microwave oven. Now the images are permanent. Free for shipping.
Re: Just wanted to point out that the HP3851A is pretty cool after all these years..

 

On 1/3/22 7:11 AM, Anders wrote:
I am testing a battery protector for LiFePO4. It measures individual cell voltages from a stack of four cells and cuts out if any of the cells fall under or goes over a preset value. The 44702 + 44711 lets me measure all cell voltages and the voltage over the shunt over time when testing charging and discharging. Data is sent over GPIB to Excel.
If anyone has one of these, then I have some collected program snippets here:?
I picked up one of these not long ago, largely because of the great info on your page. I've not gotten any modules for it yet, though.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA
HP 8663A Keycode Stimulus Diagnostic

 

The keycode assembly on my HP 8663A is failing to interrupt the microprocessor. To narrow down the fault to an IC, I was hoping to use signature analysis on the keycode assembly. In the manual I have (2234A to 2927A, vol 2) under service sheet BD9 there is a "KEYCODE STIMULUS DIAGNOSTIC", which states the following:

This test stimulates the A2A1 Keycode Assembly for signature
analysis testing. Refer to Service Sheets 61 and 62 troubleshooting
information for procedures and the use of this Diagnostic.

However, when I refer to the these service sheets in vol 4 (same serial prefix range) I don't see any signature analysis information. Each service sheet contains a block diagram, a component locator and a schematic, but I don't see SA information on any of these. I was expecting to see 4-digit hex sequences by various nodes in the schematics. Or, I was expecting to see something like the signature analysis table in the "SIGNATURE ANALYSIS I/O DIAGNOSTIC". What am I missing?
Re: Attenuator calibration hp 54503a

tmillermdems
 

¿ªÔÆÌåÓý

What did you use to make the connection?

On 1/4/2022 4:11 AM, paul larner wrote:
Hi all,ive an old hp 545o3a scope,i was looking at the callibrator signal from my tek 2430 with this,it states on the front panel that it outputs 400mv into 1megohm and 200mv into 50 ohms,when set to 50 ohm input on my hp scope it reads about double! that,does it need the attenuators calibrating?,if so how do you do it?,Tia.


This email has been checked for viruses by Avast antivirus software.


Re: Dead 54720D

 

I already found the 54712 eeprom image that you shared. Do you have any possibility, to download same firmware from the other unit ? I would like to compare. I have one 54712 unit, but still don't have programmer.?

W wtorek, 4 stycznia 2022, 16:46:54 UTC, Ovidiu Popa [Business] <ovidiu.popa@...> napisa?(-a):


Sorry, no, I gave up and wrote off the 54720D. I have too many scopes anyway, from 100MHz to 50GHz, not enough incentive to spend more time on this. Meantime, watching for a 54717A, ideally someone owning one could dump the EEPROM. I know if I'd get one, this would be the first thing I'd do, this HP money grabbing calibration abomination has to end.

If someone wants to pick up, I can forward the 54712A EEPROM binary.

Re: Dead 54720D

 

Sorry, no, I gave up and wrote off the 54720D. I have too many scopes anyway, from 100MHz to 50GHz, not enough incentive to spend more time on this. Meantime, watching for a 54717A, ideally someone owning one could dump the EEPROM. I know if I'd get one, this would be the first thing I'd do, this HP money grabbing calibration abomination has to end.

If someone wants to pick up, I can forward the 54712A EEPROM binary.
Re: Attenuator calibration hp 54503a

 

its sorted,when i first got this it had a bad psu,recapping the psu got it going,at the time i didnt have suitable load resistors to set the 5.2v output,when i finaly checked it was at about 5.8v,anyway i set it to 5.2 and recalibrated the scope,it now seems to be spot on,i can only think the first calibration i did when the psu output was too high caused the bad readings,after a recal its now fine.
Attenuator calibration hp 54503a

 

Hi all,ive an old hp 545o3a scope,i was looking at the callibrator signal from my tek 2430 with this,it states on the front panel that it outputs 400mv into 1megohm and 200mv into 50 ohms,when set to 50 ohm input on my hp scope it reads about double! that,does it need the attenuators calibrating?,if so how do you do it?,Tia.
Re: Just wanted to point out that the HP3851A is pretty cool after all these years..

 

Exactly! But not half as fun.
Re: Tek/HP/Etc chat server

 

Rule #6: "The server owner is exempt from all rules for obvious reasons"

I'll pass.

Sean
Spoken for: manuals HP 333/334, HP 8405 (reduced)

 

Thanks for your interest.

73--

Brad AA1IP
Re: [TekScopes] [HP-Agilent-Keysight-equipment] Tek/HP/Etc chat server

 

Thanks and sorry Dave, I had no idea it was being held! It showed up
in my inbox because it went to both lists.

On Tue, Jan 4, 2022 at 1:52 AM Dave McGuire <mcguire@...> wrote:


The post you quoted below was held for moderation on the
HP-Agilent-Keysight-equipment mailing list. Please take care to avoid
subverting the moderation system by quoting this sort of crap in the future.

Further, please drop this entire subject now.

-Dave, list moderator

On 1/3/22 7:48 PM, cheater cheater wrote:
I think conservatives on this list would be upset that you're trying
to co-opt them to what you were doing. You got kicked off the lists
for a while not for conservative leanings, but for massive amounts of
bottom of the barrel racist remarks over the years, which kept on
increasing in frequency. No one here wants to identify as a hood
wearer. If you were truly about the conservative way then personal
responsibility is central to that. Own what you did and stop blaming
others for your situation like some *gasp* socialist :-)

On Tue, Jan 4, 2022 at 12:24 AM Tam Hanna <tamhan@...> wrote:

Hello,

due to Christmas trouble and hosting a NY eve party, I was not able to
post this before.


Please be aware that the individual running this server has, in the
past, shown excessive liberal bias in multiple cases.

If you are in any way interested in freedom of speech, or have
Conservative political leanings, please avoid or join at your own peril.


I remain with cordial wishes for a good 2022, both personally and "all
the best of business"!

Tam


With best regards
Tam HANNA

Enjoy electronics? Join 19k7 other followers by visiting the Crazy Electronics Lab at

On 2022. 01. 04. 0:21, cheater cheater wrote:
Since people are still trickling in, and the original link is about to
expire, here's another one that will last another 7 days:



On Mon, Dec 27, 2021 at 8:14 AM cheater cheater
<cheater00social@...> wrote:
Hi all,
Just wanted to remind everyone that the chat server is alive and
kicking. You can join via this invitation link:



After you join you don't need an invitation link.

The link will expire in 7 days, if you need an invitation after that,
drop me a message.

The chat server allows real time text, audio, and video chat. You can
use a dedicated desktop or phone app, or you can use it in the
browser.

You can stream video of your repairs or projects if you want some
feedback or guidance.

Also any manufacturers are allowed beyond Tek and HPAK but those have
separate designated areas.









--
Dave McGuire, AK4HZ
New Kensington, PA
Re: [TekScopes] [HP-Agilent-Keysight-equipment] Tek/HP/Etc chat server

 

The post you quoted below was held for moderation on the HP-Agilent-Keysight-equipment mailing list. Please take care to avoid subverting the moderation system by quoting this sort of crap in the future.

Further, please drop this entire subject now.

-Dave, list moderator

On 1/3/22 7:48 PM, cheater cheater wrote:
I think conservatives on this list would be upset that you're trying
to co-opt them to what you were doing. You got kicked off the lists
for a while not for conservative leanings, but for massive amounts of
bottom of the barrel racist remarks over the years, which kept on
increasing in frequency. No one here wants to identify as a hood
wearer. If you were truly about the conservative way then personal
responsibility is central to that. Own what you did and stop blaming
others for your situation like some *gasp* socialist :-)
On Tue, Jan 4, 2022 at 12:24 AM Tam Hanna <tamhan@...> wrote:

Hello,

due to Christmas trouble and hosting a NY eve party, I was not able to
post this before.


Please be aware that the individual running this server has, in the
past, shown excessive liberal bias in multiple cases.

If you are in any way interested in freedom of speech, or have
Conservative political leanings, please avoid or join at your own peril.


I remain with cordial wishes for a good 2022, both personally and "all
the best of business"!

Tam


With best regards
Tam HANNA

Enjoy electronics? Join 19k7 other followers by visiting the Crazy Electronics Lab at

On 2022. 01. 04. 0:21, cheater cheater wrote:
Since people are still trickling in, and the original link is about to
expire, here's another one that will last another 7 days:



On Mon, Dec 27, 2021 at 8:14 AM cheater cheater
<cheater00social@...> wrote:
Hi all,
Just wanted to remind everyone that the chat server is alive and
kicking. You can join via this invitation link:



After you join you don't need an invitation link.

The link will expire in 7 days, if you need an invitation after that,
drop me a message.

The chat server allows real time text, audio, and video chat. You can
use a dedicated desktop or phone app, or you can use it in the
browser.

You can stream video of your repairs or projects if you want some
feedback or guidance.

Also any manufacturers are allowed beyond Tek and HPAK but those have
separate designated areas.





--
Dave McGuire, AK4HZ
New Kensington, PA
Re: [TekScopes] [HP-Agilent-Keysight-equipment] Tek/HP/Etc chat server

 

I think conservatives on this list would be upset that you're trying
to co-opt them to what you were doing. You got kicked off the lists
for a while not for conservative leanings, but for massive amounts of
bottom of the barrel racist remarks over the years, which kept on
increasing in frequency. No one here wants to identify as a hood
wearer. If you were truly about the conservative way then personal
responsibility is central to that. Own what you did and stop blaming
others for your situation like some *gasp* socialist :-)

On Tue, Jan 4, 2022 at 12:24 AM Tam Hanna <tamhan@...> wrote:

Hello,

due to Christmas trouble and hosting a NY eve party, I was not able to
post this before.


Please be aware that the individual running this server has, in the
past, shown excessive liberal bias in multiple cases.

If you are in any way interested in freedom of speech, or have
Conservative political leanings, please avoid or join at your own peril.


I remain with cordial wishes for a good 2022, both personally and "all
the best of business"!

Tam


With best regards
Tam HANNA

Enjoy electronics? Join 19k7 other followers by visiting the Crazy Electronics Lab at

On 2022. 01. 04. 0:21, cheater cheater wrote:
Since people are still trickling in, and the original link is about to
expire, here's another one that will last another 7 days:



On Mon, Dec 27, 2021 at 8:14 AM cheater cheater
<cheater00social@...> wrote:
Hi all,
Just wanted to remind everyone that the chat server is alive and
kicking. You can join via this invitation link:



After you join you don't need an invitation link.

The link will expire in 7 days, if you need an invitation after that,
drop me a message.

The chat server allows real time text, audio, and video chat. You can
use a dedicated desktop or phone app, or you can use it in the
browser.

You can stream video of your repairs or projects if you want some
feedback or guidance.

Also any manufacturers are allowed beyond Tek and HPAK but those have
separate designated areas.
Re: Tek/HP/Etc chat server

 

Since people are still trickling in, and the original link is about to
expire, here's another one that will last another 7 days:



On Mon, Dec 27, 2021 at 8:14 AM cheater cheater
<cheater00social@...> wrote:

Hi all,
Just wanted to remind everyone that the chat server is alive and
kicking. You can join via this invitation link:



After you join you don't need an invitation link.

The link will expire in 7 days, if you need an invitation after that,
drop me a message.

The chat server allows real time text, audio, and video chat. You can
use a dedicated desktop or phone app, or you can use it in the
browser.

You can stream video of your repairs or projects if you want some
feedback or guidance.

Also any manufacturers are allowed beyond Tek and HPAK but those have
separate designated areas.
Re: Low Cost Test Equipment

 

For sure, but what Roy said is spot-on....especially his last sentence.....
FS: manuals HP 333/334, HP 8405 (reduced)

 

I'm offering FS the following HP instrument manuals:

333A/334A distortion analyzer prefix 1101A (for 333A) and? 1137A (for 334A)
--? Includes Supplement A yellow sheet for 00333-90005 in near-find cond.



8405A vector voltmeter operating and service manual missing sections 1 through 3.
Text begins at section 4 (principles of operation), through appendix I and appears
complete. Includes yellow sheets 08405-90024; the manual is marked "1144A-05388".

Asking $16.00 for the lot which includes USPS media-mail shipment.

PayPal honored, questions welcomed.

73--

Brad? AA1IP
30201 - 30220 of 151508