Products > Test Equipment
Test Equipment Anonymous (TEA) group therapy thread
mnementh:
--- Quote from: Cerebus on May 23, 2018, 08:51:09 pm ---
--- Quote from: Specmaster on May 23, 2018, 07:44:26 pm ---... the only other lab remotely near me is Calmet, who say that can do it but it is not known to how many digits, unless bd139 does as he spoke to them?
--- End quote ---
To more digits than you've got. Calmet's UKAS accreditation details can be found here https://www.ukas.com/wp-content/uploads/schedule_uploads/00001/0143Calibration%20Multiple.pdf. The limit on their capabilities (for artefact calibrated meters like the HP 3458A) is their sourcing capability for standard quantities like 10 V (0.8ppm k=2) or 10kΩ (3.0 ppm k=2).
For more mundane calibrations their generation capability (i.e. the output of a variable calibrator) for resistance is ~25 ppm, DC voltage ~35ppm, AC voltage ~200-300ppm (all with an expanded uncertainty with k=2 i.e. the standard deviation of any error is 1/2 the stated number). I'm just picking values for middling ranges there, you can see full details in the UKAS accreditation.
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Dude... reading that made my testicles shrink up like weapons-grade blue balls. In fact, I think one of them may have jumped back inside and "un-descended". :-DD
mnem
MEDIC!!!
GerryBags:
--- Quote from: Mr. Scram on May 24, 2018, 02:51:38 am ---German tank maintenance? Do you have a Tiger in your lab you're not telling us about?
--- End quote ---
I wish I did! I've spent the last ten years making scale models of armour, Tigers included, and I'm a stickler for accuracy. I suppose it's unsurprising that once I got into electronics I'd gravitate to TEA in short order. Weirdly, both Silicon Valley and the British tech industry owe their existence to WW2, so having a handle on the history of that period has helped me get my head around the story of how things have developed since then. My understanding is up to about the early eighties at best, I reckon, I'm trying to give myself a better grounding in the basics before diving into MCU's and more complicated stuff.
mnementh:
--- Quote from: beanflying on May 24, 2018, 12:29:40 am ---
It's only 4RU high but 500mm deep :phew:
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...aaand my testicles just came back with an audible *POP!* :-DD
mnem
SCHWANNNG!!!
mnementh:
--- Quote from: Mr. Scram on May 24, 2018, 02:51:38 am ---
--- Quote from: GerryBags on May 24, 2018, 01:40:58 am ---
Well, my Ohmless 3455A turned up today. I'm cleaning off the layer of sticky orange goop covering the front panel, and all the buttons, before doing anything else. I's not a very heavy box, but it's 21" deep. I think this is going to necessitate yet another re-arrange of my bench.
--- End quote ---
German tank maintenance? Do you have a Tiger in your lab you're not telling us about?
--- End quote ---
Strangely, that 3455 does nothing for me. Not even a little tingle.
I too am more curious about the Panzer Tech on the shelf; I have had my hands inside a couple M4s as a youth, but mostly cleaning parts and whatever they needed a young skinny kid for. I hung with the club just enough to realize how weird the the powertrain was; then I joined my local Fire Dept. and quickly ran out of free time. Radial power in a bulldozer never did make any sense to me; made me glad to get back to passenger vehicles you could just weld whatever V8 you liked into. :P
mnem
Bulldozer chic!
GerryBags:
From what I've seen online (haven't opened it yet) the insides of the 3455A may well induce some wood.
Some great photos in those Volker Ruff books, plus all the necessary plans to build a Fries 16T gantry crane, should the need ever arise (?). I think the range of engines (and guns) they managed to shoe-horn into the Sherman is what it made it such a success. The Chrysler Multibank from the M4A4 has to be my favourite, even more than the radial. Five V8's on a common crank, genius!
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