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Test Equipment Anonymous (TEA) group therapy thread

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factory:

--- Quote from: Vince on January 03, 2025, 09:35:51 pm ---

A little distraction from Ebay. I never go there, instead I just search Leboncoin.fr. It's like walking around a giant flea market. I like being surprised at what I might find whenever I visit. And before X-max I found this :

https://www.leboncoin.fr/ad/equipements_industriels/2897609579

I have enough hollow-state Tek scopes here, so a couple years ago or so, I started changing the goal, and now enjoy going after samller TE of that same era, that accompanied these scopes. Like special / uncommon plug-ins, special TE to calibrate this or that in the scope. Makes for a more vibrant and interesting "ecosystem", than just having bare scopes, doesn't it ? Yes it does, to me at least.

So in this vein I have managed to find so far :

- A type 107 fast pulse generator, to check B/W and frequency response of vertical amps.
- A type 1121 wide band pre-amp
- A type 180A time mark / comb generator to calibrate the horizontal amplifier of the scope

and today... this.... thing, which I can't even tell you what "type" it is because it doesn't even have one !  :-DD
It's purely a calibration fixture, and often Tek didn't give them a type number, but instead a long sequence of digits that looks very much like the part-number of a... single part, not a complete instrument.

This thing they call a "Amplitude calibrator and comparator".
Looked in the manual, it's designed solely to fine tune the amplitude of the calibrator output of the scope. The scope already has a trimmer to fine tune this, but I guess with a calibrator it's more... accurate. I don't know, I just found this thing cool and cute, so I could not resist buying it. I am very excited to welcome the fourth member of my debuting collection of 500 scope "peripherals" so to speak  :D


--- End quote ---

Nice find, correct me if I'm wrong, but doesn't the whole thing slide out of the optional case with the screw on the bottom left on the front panel.

I have another from this series of Tek scope test/cal items, the 067-0532-00, a 500MHz constant amplitude calibrator, really need to give it a service one day.

David

factory:
Had a bit of trouble with the ESR tester over the holiday, having spent too much recently I'm looking for 2mm connectors to repair it, as I can't seem to get the socket out of the plastic sleeve.
It's a gold plated version of Electro PJP part no. 209, I can only find nickel plated ones in the UK, I can probably cut the old plastic sleeve off, reuse the gold plated socket & use the sleeve from a new Ni plated version.



But thinking about it I would like to make a set of leads with bigger croc clips, does it matter if they have fancy gold plating or not for the 2mm connector? I can't say I've ever seen a gold plated capacitor lead. I already have some fancy Mueller croc clips.

Some pictures of insides of the ESR60 tester below, Rev 2.0B with R4.9 firmware.

David

Martin.M:
S51B

tubes are very good.

Robert763:
So I broke my ebay drought. Pulled the trigger on a Tektronix THS720A. Not super cheap at £240 but a late one with FW 1.16 shown working and all the bits including the proper CAT II probes. Looks fairly clean. Main reason for purchase is to upgrade to THS720P because I want something for measuring power harmonics. The 720P is not the most accurate for harmonics but it does work with 400Hz supplies which is of interest to me.
We will see what turns up.
I've had a THS720A before when they were a current product and the upgrade was unknown. I sold it o twhen prices were much higher.

Robert.

factory:
I ended up buying a THS720A a while ago too, also a late one, still in the original box and only had around 5 power cycles when I bought it.

The end of last year I bought a faulty TDS2014, a recap of the PSU was done and a shorted capacitor array was found on the mainboard, all working now.

And I've sorted the Peak test lead, a small hammer & parallel punch was the answer to getting the socket out of the sleeve, plus a piece of metal with a hole about the same size as the sleeve, it's now soldered back together and back in service.

I'm currently working on an Advance counter from the mid to late 60s, many knackered capacitors found and the odd rusted diode/transistor lead so far. At least the PCBs are much better quality than other British makers, i.e. traces don't peel off if you look at them the wrong way.

David

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