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BNCs. Are there any standards, even informal, for centre spacing of BNC layouts?

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penfold:
If you're looking for "honoured more in the breach than the observance thereof", you could do worse than check out some human-factors design guide, I was trying to see if I could find a free copy of def. stan. 00-250, but stumbled across this site which has some recommendations. I doubt 25mm between edges would give the most density, but it wouldn't be far off the 33mm-ish that seems "not-unusual".

Someone:
At the extreme end (without also going to smaller connectors) you can tesselate in 3D.

scopeman:
Most LCR Meters BNC connectors are on a 22mm center to center spacing but my Wayne Kerr 4250 has a spacing of 24mm.

I am wondering if other Wayne Kerr meters are also spaced on a 24mm standard or have they adopted the more prevalent HP/Agilent/Keysight standard of 22mm?

What say you?

Thanks,

Sam
W3OHM

mawyatt:
The Tongui TH2830 and Hioki IM3536 LCR meters and 6 various Fixtures we have look to all be on 7/8" centers.

Best,

scopeman:

--- Quote from: mawyatt on November 13, 2022, 08:47:59 pm ---The Tongui TH2830 and Hioki IM3536 LCR meters and 6 various Fixtures we have look to all be on 7/8" centers.

Best,

--- End quote ---

I would bet that they are really 22mm as 0.875 is very close to 22mm (22.225mm as that is the HP/Agilent standard as noted in the HP4263A manual.

Sam

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