DG Aviion video

From: Philip.Belben_at_pgen.com <(Philip.Belben_at_pgen.com)>
Date: Tue Dec 1 10:05:18 1998

> Also, the colour video output is on 3 BNC connectors. Can I use 3
segments
> of ethernet coax to carry the video signal or is the impedance wrong?

Has someone else answered this? I can't remember. Anyway:

Impedance of Etehernet coax is 50 ohms; impedance of video coax should be
75 ohms. You will get slight ghosting from reflections etc. if your leads
are longer than a few feet.

More importantly, 75 ohm BNC connectors are not quite the same mechanically
as 50 ohm ones. Plug in the wrong combination and you get slight
mechanical damage or a poor contact (can't remember which is which. I
think it's 50 ohm plug in 75 ohm socket => mechanical damage, 75 ohm plug
in 50 ohm socket => poor contact)

It might work in a pinch but it's not recommended.

Philip.
Received on Tue Dec 01 1998 - 10:05:18 GMT