Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 36783915 times)

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Offline duckduck

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135875 on: February 28, 2024, 03:44:00 am »
Once again I'm starting to think I need a 4263B LCR meter...

Of course you need one. How are you going to know the values of your L's and C's and R's to enough decimal places without one? Also, it talks GPIB and you can adjust the frequency. How about plotting a nice graph of frequency response? What a wonderful idea for a video. Ooh, now you really need one ;-) Here's a Chinese seller with 5 for sale for relatively cheap (NARTS) https://www.ebay.com/itm/145575300271

EDIT:

Oh, I guess you can only do half a dozen frequencies. Well, you still need one.
« Last Edit: February 28, 2024, 03:48:25 am by duckduck »
 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135876 on: February 28, 2024, 06:44:21 am »
I already have a 4276A which I love, but it's just so big....

I've already downsized my 3325A to a 33120A and my 5445A to a 53132A, and swapped out 3x HP E36xxA PSU's for one Siglent.

So, things are compacting and I think the LCZ meter is next...
Where does all this test equipment keep coming from?!?

https://www.youtube.com/NearFarMedia/
 

Offline Robert763

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135877 on: February 28, 2024, 07:49:24 am »
<SNIP>

So the conclusion is I need at least: 1 old Hameg for the component tester, the Micsig for the serial decode, a LeCroy for the advanced math and statistics, a battery powered and isolated scope for those rare occasions. (Of course that's a bare minimum, always have some backup !)
Anyone know of a single model that ticks all the boxes?
[/quote]

A Picotechnology Picoscope.................
Well it needs bit of work with the signal generator output for the component tester and only isolated when on a battery laptop (or  using one of their differential probes) but serial decode and math functions are built in, not options.
 
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Offline DavidKo

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135878 on: February 28, 2024, 08:50:39 am »
Once again I'm starting to think I need a 4263B LCR meter...

Are you sure you want to go that way? It has only 5 fixed frequencies (6 with option 002). The NF ZM23xx devices seems to be better option for me. You can measure frequency characteristic (I think that ZM237x have even SW for that).

 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135879 on: February 28, 2024, 10:35:45 am »
I've never needed to do sweeps, but that is a consideration I guess. I like HP though :D and they are more readily available here in Japan.

Is it possible to hack an NF ZM2372 up to a ZM2376? I see a ZM2372 on Yahoo Auctions for 132000yen. Not sure if that's a good price?
Where does all this test equipment keep coming from?!?

https://www.youtube.com/NearFarMedia/
 

Offline DavidKo

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135880 on: February 28, 2024, 12:31:19 pm »
I've never needed to do sweeps, but that is a consideration I guess. I like HP though :D and they are more readily available here in Japan.

Is it possible to hack an NF ZM2372 up to a ZM2376? I see a ZM2372 on Yahoo Auctions for 132000yen. Not sure if that's a good price?

4276A I do not want to buy it since it has high prize and no adjustment seems to be possible. That is why I consider NF. Service manual I was not able to find for HP or NF (manual for HP which says replace the board is not service manual for me ;) )

I have no idea if you can hack NF. That ZM2372 is offered for quite a long time (>0.5 year) - the prize seems to be too high, but I cannot say you the prize at which is usually sold.
 

Offline Robert763

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135881 on: February 28, 2024, 06:40:05 pm »
There was talk of the Metrix power meters a couple of days ago. A MX1220 has turned up on ebay
www.ebay.co.uk/itm/156076382369
No, I don't need another one and it's over priced at £179 even given the nice condition.
 

Online Vince

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135882 on: February 28, 2024, 08:59:57 pm »
Wow thanks for that, that was a cool repair and experiment ! You only post once a yer but when you do it's juicy   :D

Never noticed the buzzer ticking, but now that you mentioned it I am sure I will start hearing it now, "of course"  :palm:  :-DD

Cool screenshots, what scope is that ? It looks like a combiscope but it does not look like a Fluke/Philips, based on the CRT surround that's a lighter colour on your scope.
I think it would however fit better a Hameg combiscope... is that it ? I quite like them and would not mind one, to enrich my scope collection, but they are not anywhere as plentiful / common as the "regular" Hameg scopes on leboncoin.fr.

Don't say a word, I am sure you got yours for 20 Euros and fixed it in 5 minutes for 50 cents, as per usual. I hate you  ;)


To be fair you really have to know what you're listening for to notice the buzzer noise, no trouble really. It got me worried because I've had Flukes before where the buzzer drive was "shorted" and current consumption was sky high with a still working meter. That and the LCD being a little faint on some segments despite the zebra cleaning made me want to look if I could correlate current spikes with what I was hearing.
Now you know, have you heard it?

No, can't hear it....may it long continue that way !!!  :phew:



You're right it's a Hameg, I caught it on Leboncoin of course, a decent catch at 90€ shipped and working, not worth any hate tough  ;D

Oh, so you paid more than 10 Euros for a piece of TE for a change ?!  ;D
OK, no need to hate you on that one, I agree...

It's a HM1508 (First version - no USB) I'm still not sure how long I'll be keeping it... I do like the analog / digital, 150MHz, 1MB, 1GS/s but considering all the hardware is there it leaves me the impression of an incomplete product. It has been the scope getting the most attention for several months now and some of the UI just doesn't feel intuitive for a quite basic scope - but maybe I change scopes too often.
Another deception is the very limited amount of on-screen simultaneous measurements you can display for a scope of its age, I'm forgiving for the mid '90s Fluke / Philips Combiscopes to be limited, not here.

My main grunt is the component tester, my motivation to buy this (other than the price and possibility to make some benefit when letting it go) was to have analog / decent digital figures and the component tester which is something I use a lot. IMHO they completely ruined that:
You cant switch to and fro component tester in one key press, it brings up a menu then 2nd press enables C.T.
Worse you can't zoom x10 horizontally the component tester at all, that's something I like to do regularly when quickly checking electrolytics.

Thanks for the summary !  :-+

I didn't realise they were so recent that they had so much memory and sampling rate !  :o  WANT !
And if I can find one with a USB port at the front for screen capture... WANT EVEN MORE !  :-+

All the other down sides you mention, are no worse than my Tek 2232 or Fluke/Phlips, so that's fine.

My first combiscope was my Tek 2232 Like any Tek 2000 series, I love them for their ergonomic and intuitive interface.
But the 2232 is one of the oldest combiscopes, so its internal construction is a bit dated, makes it temperamental / unreliable.
Plus, cursors only work in digital mode, not analog. Only 4K memory as well, and no automatic measurements. And the dreaded "singing" SMPS that pierces my ear drums...  |O

Then I have my Philips/Fluke combiscope. A bit more modern so overall much better, which is why that's my daily driver. However the downside is a disaster of a user interface, so much so that even though I have been using for 5 years now, I still have to search the front panel for seconds un til I can find the push button that I need, and in some cases some more seconds to remember how to work it to achieve the desired result. enabling/disabling  the x10 sweep speed being one of them. To mention just one example, but there is so much more wrong in this UI... I still often want to throw it out the window in anger and frustration...

The Hameg can't possibly have a UI worse than the Fluke, be it the H/W part (front panel/ switches/knobs), or the S/W part (the menu system).
The much higher sampling rate and memory and USB in some, of the Hameg, make it a no brainer for me....so I think I will keep an eye out for one.

The only advantage maybe for the Fluke over the Hamed, is that the bandwidth is better at 200MHz, and it's got switchable 50R inputs which the Hameg might not have (don't know), since this feature tends to appear starting at the 200MHz B/W mark.
Also, my Fluke is the 4 channel version, which can be handy at times... when you need it, you need it, no substitute...


So the conclusion is I need at least: 1 old Hameg for the component tester, the Micsig for the serial decode, a LeCroy for the advanced math and statistics, a battery powered and isolated scope for those rare occasions. (Of course that's a bare minimum, always have some backup !)

Same here. The perfect (BENCH, not USB/picoscope) scope does not exist. I have countless scopes and I like them all for this or that reason.... be it factual/technical, or subjective/emotional...
At the very least I wand a combiscope, best I can find (the Hameg fits the bill here, by a long shot) for general purpose work.
Then I want also my HP 54645D MSO for it's megazoom goodness and overall great user experience, I just love this thing.
then a more capable, "bigger" digital scope. That would be my Tek TDS544A which yuo know very well  ;) which I hope to replace with a Japanese import, Aussie revisited TDS 784D fully optioned up.
Then for high-speed fun my TDS 694C , 3GHz, 4x10GS/s.

Then nearby, my countless older, purely analog CRT scopes from the '50's to the early '90's, mostly Tek.

I just love all my scopes, I don't want to have to chose !  :-[

« Last Edit: February 28, 2024, 09:58:30 pm by Vince »
 
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Online factory

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135883 on: February 28, 2024, 09:24:10 pm »
Awesome, thanks!

A parcel with the HP sig-gen front panel has arrived today, will open, inspect & repack it tomorrow, for it's journey to Japan, also will look up a suitable tariff code for the customs label.  ;)

David
 
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Online factory

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135884 on: February 28, 2024, 09:49:12 pm »
The last few months I've been working on resurrecting a HP 5245L counter, that was pillaged & left for dead, it's one of the few left that was built in the Bedford HP factory, which was only in use for a couple of years, before production moved to Scotland.

This is what was left of this counter, when I was given it a few years ago, I thought about using it for spares but didn't want to scrap it. I haven't got the missing top/bottom covers, which are unique to these counters.  |O





Thankfully a bunch of spare PCBs appeared on ePay last year (I had a couple from Sphere too), the only ones I failed to win were the 6 decade divider boards, this didn't stop me, I created a replacement with KiCad and got a bunch made by JLC.  ;D



There were many problems to fix along the way;

The 1500uF 25V cap was open circuit (had this same cap fail in two 412A VM). Most of the display bulbs on the spare boards turned out to be duds, more expense got me a set of working ones. A couple of boards were quite faulty, the 1Mc divider board had 2 rusty/broken transistors and 6 transistors had failed on the gate control board.

Some of the decimal point & symbol lamps were not working, I ended up replacing all the decimal point lamps, as the rusty leads broke on every single one once I disturbed them, I had to create the frosted lamps from some ordinary A9A (NE-2E) lamps & frosting paint (requires baking at 160°C), the 2 dead symbol lamps were replaced with some salvaged NE-2H. And the fan got rebuilt with parts from a spare fan of the same type, much quieter after this.



Today I added option H18, this adds a 100 & 1000 second gate time, some switch parts were modified to fit and the reset button moved to the back of this switch, it got wired up to the 2 extra decade divider boards, it works fine.  :-+





David
« Last Edit: February 28, 2024, 09:59:04 pm by factory »
 

Offline TERRA Operative

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135885 on: February 28, 2024, 11:30:36 pm »
Awesome, thanks!

A parcel with the HP sig-gen front panel has arrived today, will open, inspect & repack it tomorrow, for it's journey to Japan, also will look up a suitable tariff code for the customs label.  ;)

David

Nice!

Slow shipping is fine (keep it cheap! :D )
PM me and we can sort out the details. :)
Where does all this test equipment keep coming from?!?

https://www.youtube.com/NearFarMedia/
 

Offline ch_scr

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135886 on: February 29, 2024, 09:06:37 am »
The last few months I've been working on resurrecting a HP 5245L counter [...]
Congratulations, she's a beauty!
Few things so rewarding as resurrecting one "left for dead", and repairing / upgrading with self-designed boards to boot, double-whammy :-+
One might even say, better than new now.
Keep up the good work, pretty sure Bill and Dave would appreciate this labour of love as well
 
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Offline tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135887 on: February 29, 2024, 10:01:29 am »
Keep up the good work, pretty sure Bill and Dave would appreciate this labour of love as well

Well, I/we appreciate it, but I'm not sure Bill would have.

When Bill heard The Garage was being designated a California Registered National Monument No976, he said that was stupid and that it ought to have been torn down years ago.

After Bill died and during the Carly Fiorina era, HP bought the garage. I need say no more.
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
Having fun doing more, with less
 

Offline ch_scr

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135888 on: February 29, 2024, 10:37:29 am »
Keep up the good work, pretty sure Bill and Dave would appreciate this labour of love as well

Well, I/we appreciate it, but I'm not sure Bill would have.

When Bill heard The Garage was being designated a California Registered National Monument No976, he said that was stupid and that it ought to have been torn down years ago.

After Bill died and during the Carly Fiorina era, HP bought the garage. I need say no more.
And there I was in my ignorance, trying to make a positive, non-controversial statement. Not lamenting the state of HPAK as of late...
I guess that part of his statement ought to be seen in context to be fully understood?
 

Offline tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135889 on: February 29, 2024, 10:45:11 am »
Keep up the good work, pretty sure Bill and Dave would appreciate this labour of love as well

Well, I/we appreciate it, but I'm not sure Bill would have.

When Bill heard The Garage was being designated a California Registered National Monument No976, he said that was stupid and that it ought to have been torn down years ago.

After Bill died and during the Carly Fiorina era, HP bought the garage. I need say no more.
And there I was in my ignorance, trying to make a positive, non-controversial statement. Not lamenting the state of HPAK as of late...
I guess that part of his statement ought to be seen in context to be fully understood?

Yeah :)

I remember it circulating on internal HP usenet groups. I haven't looked for an external reference.

I have been guilty of mis-remembering/mis-understanding what Bill said after meeting Carly Fiorina. :(
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
Having fun doing more, with less
 

Offline m k

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135890 on: February 29, 2024, 11:03:48 am »
Keep up the good work, pretty sure Bill and Dave would appreciate this labour of love as well

Well, I/we appreciate it, but I'm not sure Bill would have.

When Bill heard The Garage was being designated a California Registered National Monument No976, he said that was stupid and that it ought to have been torn down years ago.

After Bill died and during the Carly Fiorina era, HP bought the garage. I need say no more.
And there I was in my ignorance, trying to make a positive, non-controversial statement. Not lamenting the state of HPAK as of late...
I guess that part of his statement ought to be seen in context to be fully understood?

I remember that the "rule" was that HP was never a small company.
Advance-Aneng-Appa-AVO-Beckman-Danbridge-Data Precision-Data Tech-Fluke-General Radio-H. W. Sullivan-Heathkit-HP-Kaise-Kyoritsu-Leeds & Northrup-Mastech-OR-X-REO-Schneider-Simpson-Sinclair-Tektronix-Tokyo Rikosha-Topward-Triplett-Tritron-YFE
(plus work shop of the world unknowns)
 

Offline shakalnokturn

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135891 on: February 29, 2024, 12:51:53 pm »
Page 1197

So much win here;

https://youtu.be/hLORM1TcE1A

I didn't watch all of it, but skipped through it.

Everything I saw was accurate, from my perspective of being an HP employee from the mid-80s until Princess Fiorina had a hack at it.


 
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Offline wkb

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135892 on: February 29, 2024, 07:28:38 pm »
Shook hands with her once, while staging a massive HP customer event. After counting my fingers I found all were still present.  :P
 

Offline tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135893 on: February 29, 2024, 09:08:22 pm »
Page 1197

Page 599 here  >:D (old joke, doubt anybody left here remembers :) )

More to the point, somebody sent me that after I mis-remembered what happened 20 years earlier. Good to have that correction.
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
Having fun doing more, with less
 

Offline shakalnokturn

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135894 on: February 29, 2024, 10:37:44 pm »
Page 1197

Page 599 here  >:D (old joke, doubt anybody left here remembers :) )

More to the point, somebody sent me that after I mis-remembered what happened 20 years earlier. Good to have that correction.

I don't, never been good at keeping up with the TEA group. Care to point me to the old reference?

Anyone know what bd139 has become? I enjoyed his approach to life (out here) but for all we know he was suicidal...
 

Offline tautech

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135895 on: February 29, 2024, 10:41:49 pm »

Anyone know what bd139 has become? I enjoyed his approach to life (out here) but for all we know he was suicidal...
He and others took umbrage when Gnif moderated this forum and went to spend their time elsewhere.
We catch up with most of them daily on Discord and frequently in another TEA forum.

PM if you want links.
« Last Edit: February 29, 2024, 10:48:56 pm by tautech »
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Offline tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135896 on: February 29, 2024, 11:09:50 pm »
Page 1197

Page 599 here  >:D (old joke, doubt anybody left here remembers :) )

More to the point, somebody sent me that after I mis-remembered what happened 20 years earlier. Good to have that correction.

I don't, never been good at keeping up with the TEA group. Care to point me to the old reference?

Anyone know what bd139 has become? I enjoyed his approach to life (out here) but for all we know he was suicidal...

I can't be bothered to search for it, either :)

As for bd, yesterday he announced "Looks like I'm on the wagon again  :lol: Tek 2215A on the way. Needed something to poke around inside an HP41 printer I have which is not working properly..."
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
Having fun doing more, with less
 

Offline vk6zgo

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135897 on: February 29, 2024, 11:19:50 pm »
Shook hands with her once, while staging a massive HP customer event. After counting my fingers I found all were still present.  :P
I've had Bosses like that!
 

Offline tggzzz

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135898 on: February 29, 2024, 11:23:43 pm »
Shook hands with her once, while staging a massive HP customer event. After counting my fingers I found all were still present.  :P
I've had Bosses like that!

After listening to Fiorina perform, my thought was "why didn't you speak in English (not Manager-ese), using words and concepts we could understand". Bill and Dave didn't have any difficulty doing that.
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
Having fun doing more, with less
 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #135899 on: March 01, 2024, 01:56:27 am »
Does anyone know if a bulkhead (panel mount) Male to Female BNC adapter exists?
Where does all this test equipment keep coming from?!?

https://www.youtube.com/NearFarMedia/
 


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