Zenith wrote: ↑Sat Aug 03, 2024 2:44 pm
TE with no manual is always a dubious prospect.
It might have a problem you can fix without a manual or cct diagram, such as a loose connection or dirty contact.
Even simpler, the exposed 1kV connections might be wrong.
Embiggen the picture below. Yes, that is a 19" 9U rack
Not sure what the "Null Detector" cable should be connected to; almost certainly one of the sets of terminals on the bottom piece. But then what's the "Bridge Power 200V max" on the left hand 4mm binding posts?
OTOH it would be easy to find a source for the "Reference Input". The big hint is that the key switch allows you to select 10V or 1.018V.
The manual might turn up after a time on one of the usual sites, ebay, or at a swapmeet.
Highly unlikely; there hasn't been anything related to these on fleabay in years. I've heard of one copy of a manual, but that owner wouldn't release it since his source was "illegal", whatever that means.
You might find the unit is a rebadged version of something that does have a manual.
It might be there's a similar item with a manual from the same maker, and that's close enough.
That's the best hope. Unfortunately all the "more modern" calibrators have all the pieces wired together
correctly inside the box, with software twiddling all the knobs.
I take the view that TE with no manual is worth next to nothing. There may be recoverable parts, such as frequency standards which are worth having. If you tinker things together, junk TE can give a nice case, IEC connector and switch, and maybe a transformer. If you had to buy that new, it would be damned expensive.
The KVD was almost certainly salvageable; I didn't realise how many salvageable components were in that piece alone! I could almost certainly sell that for more than I paid for the whole lot.
The "worth" would never have been more than entertainment. Unfortunately I've yet to work up the courage to be entertained by 1kV where it shouldn't be.
Some things, such as Panasonic scopes, are notorious for there being no documentation.
Some items I've only bought because the service manual was included. Just as well, because the instrument is obscure and the manual unobtainable.
I really don't know about that Fluke calibrator, but I suspect it's a £108 doorstop. There's something odd about the price of this and the £10s of thousands asked for a used, working one.
These are nothing without the calibration certificate, since they are calibrators themselves. Not sure where you would go to get this calibrated; probably NPL or PTB in Germany. PTB have been known to turn up at Makerfaires and allow you to connect your stuff to their equipment. I took a voltage source and measured it with an HP3458 that they had calibrated the day before
![Smile :)](./images/smilies/icon_e_smile.gif)
Not sure they would allow you to do a full calibration of this though, even if I could carry it there
Mine is the kind of thing that only very serious metrology labs would have, the best available until Josephson Junctions came along. 4.5 digit calibrators are mere toys by comparison.
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