ITM wrote:
On Sun, 02 May 2004 21:36:30 +0100 (BST), "Dave Liquorice"
wrote:

Did you also pickup the Ov (ground) for the camera and connect it to
the shell of the phono or just the "video" wire to the pin?

Only the video wire to the pin. There was no ground - only power
live/neutral and (presumably) audio (4 wires in all).

What would be your guess as to the likeliest reason for the weakness
of signal??

There has to be a ground. The only reason you're getting anything at all is
because it's finding a very poor return path somewhere.

You say power is live/neutral. Are you sure it's not DC? If it's DC, then
one of those supply wires will be the ground and you have to bring that out
to both the audio and video shells. If you get horrible hum, just do it to
either audio or video but not both. Alternatively, is that audio wire really
audio or could it be video ground? Do you definitely have audio on those
cameras?

--
Dr. Craig Graham, Software Engineer
Advanced Analysis and Integration Limited, UK. http://www.aail.co.uk/