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Test Equipment Anonymous (TEA) group therapy thread
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m k:
Me too.
(COMPONENT SORTING)

I was pretty sure I have a NOS 8080 somewhere, I was right, found 2.
Something else came up also, ER1400 x2, not bad.
All being in the same mylar bag for around 30 years, go figure.
Some discretes and DC305 was also there, and that ratted it all out, the bag was for VAX 11/750 console, silky LA120.

Elsewhere was also partially less new.
For example few SIMM modules with through hole memory chips.

Few were unknown even after some poking around.
(can be a repost and totally obsolete stuff)
UC80068N UC80243N UC80343N
mnementh:

--- Quote from: Saskia on July 20, 2022, 08:57:02 am ---
--- Quote from: mnementh on July 20, 2022, 02:13:52 am ---
"Lovey... maybe it's time to buy a farm in upstate New York." ~grand-dad

--- End quote ---

you are aware of the meaning of "buy a farm" ?
--- End quote ---

Ehhh... I always heard that said "bought the farm", as in past tense, already dead. Though there is some irony in there; like the song goes: "There ain't nothin' but the dead and dyin' back in my little town..."  :o



mnem
Actually, they bought two farms and merged them. Joy.
mnementh:

--- Quote from: med6753 on July 20, 2022, 09:06:11 am ---
--- Quote from: bd139 on July 20, 2022, 08:23:40 am ---
--- Quote from: med6753 on July 20, 2022, 07:57:37 am ---Predicted high temp today for here is 36 C. What about UK? Gonna hit 40 C again? I can only think of perhaps 3 times that it got to that temp here.

--- End quote ---

Back to normal now. 27oC peak  :-DD

--- End quote ---

That's good. Going to be brutal here right up to Sunday.
--- End quote ---


--- Quote from: mnementh on July 18, 2022, 04:00:16 pm ---...Temps will climb starting tomorrow with a high of 96/70%RH Wed & Thurs. Which is exactly when they're supposed to be coming to work on the AC. In the attic.  :o   Who wants to start a pool on how long it takes them to piss off somewhere else and what the excuses will be...?  :-DD

mnem
I'm expecting a call tomorrow night rescheduling til some time next week "due to overruns at a current job". :P
--- End quote ---

Well, I lost that bet big-time; they're aspoda be here in a hour to start. I still haven't got the kids up yet...  :o

mnem
Never happier to be wrong... ;)
tggzzz:

--- Quote from: m k on July 20, 2022, 11:04:26 am ---Something else came up also, ER1400 x2, not bad.

--- End quote ---

As used in Tek 2445/2465 (not A/B), maybe others.

If I had those, I'd keep hold of them in case one of my 2465s cal "ram" failed. I haven't heard of that happening, unlike the A and B variants.
grizewald:

--- Quote from: tggzzz on July 19, 2022, 11:41:29 pm ---
--- Quote from: Vince on July 19, 2022, 10:14:11 pm ---COMPONENT SORTING
- 6N136 : super fast optocoupler, given for 1Mbps

--- End quote ---

IIRC used in Datron 10x1 meters, and probably elsewhere.

Not sure if failure mode is aging while energised, or simply aging.

--- End quote ---

Yes indeed. My 1071 uses four 6N136 and no fewer than 8 MCT6 dual opto isolators.

Not that you'd know it by looking at the BOM in the service manual. Datron gave HP4351 as the part number of the 6N136 and FCD880 for the MCT6.

Neither HP4351 or FCD880 give any hits on the usual data sheet sites. I have no idea why they used part numbers in the BOM which bear no relation to the actual parts used. The other fun bit is that some of the opto couplers used have either (red) or (white) written after them in the BOM, but there is no documentation about the selection criteria which resulted in a white, orange or green dot being placed on the packages. I assume that the red dots turned orange with time and that the green dot implies "not white or red". Although, just to muddy the waters further, there are also chips with no coloured dot on them!
I just compared my 1071 with my 1061A parts mule and the colour or lack of a dot seems to be the same for both, with one exception which has no dot on the 1061A but has a green dot on the 1071.

Confused? Very.
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