That VAXStation4000vlc 3W3 video connector

[Paul Koning]

> On May 4, 2021, at 1:50 AM, Doug Jackson <doug at doughq.com> wrote:
> 
> HI Paul,
> 
> "I don't know what "HD BNC" means.  There's only one BNC"
> 
> Years ago when working in a university with Photomultiplier tubes, we used HV BNC connectors - these looked like standard BNC, but were rated at 10kv.
> 
> https://www.radiall.com/products/rf-coaxial-connectors/high-voltage-connectors/bnc-ht-mhv.html

Those are MHV connectors, not BNC, the description makes that clear.

> We also used to use 75 Ohm BNC connectors for video systems.

> 
> https://www.hubersuhner.com/en/products/radio-frequency/connectors-adapters/bayonet-connectors-bnc/bnc-75-real

Sure.  Those are the same shape and size as regular BNC connectors; the difference is in the insulation to produce a 75 ohm characteristic impedance.

> It is worth noting that there are multiple BNC connectors.

Yes, I see your point.  What I meant is that "BNC" refers to a given shape and size.  As for the "HD BNC", that's news to me but it seems to be merely a standard BNC connector with slightly tweaked tolerances or materials to be rated to a higher top frequency.  For the application we're talking about here, the frequency rating of an ordinary BNC connector is way better than what's needed.

	paul