If your reference to D-sub means the connectors originally made by
ITT-Cannon, I can offer the following from a cutout from a trade catalog
that I have carried around these last 30 years as ammunition against
those who erroneously use the term DB-9!
I wasn't sure, so I had to find it and can confirm that there was no
'standard' D-sub of 52 pins in 3 rows. The ones available were:
DA15, DB25, DC37, and DD50, that latter of which had 50 pins in three
rows. There was of course the famously mis-labelled DE9.
Could you have mis-counted the pins?
cheers,
Nigel
On 27/02/2020 18:37, Adam Thornton via cctalk wrote:
I work at an astronomy facility. I get to do some fun dumpster diving.
I recently have pulled out of the trash a plugboard with a male and a
female D-Sub 52 connector. 3 rows of pins, 17-18-17. I took the
connectors off the board: there's nothing back there, so this thing only
ever existed so you could plug the random cable you found into it and its
friends to see what the cable fit.
I can't find much evidence that a 52-pin D-Sub ever existed.
Is this just Yet Another Physics Experiment thing where, hey, if your
instrument already costs three million dollars, what's a couple of grand
for machining custom connectors? Or was it once a thing?
(also posted to COFF)
Adam
--
Nigel Johnson
MSc., MIEEE
VE3ID/G4AJQ/VA3MCU
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