video signal transmission through two wire line through slip

helllllllllllllllllllllllo every body:

I want to transmit a video signal through tow wire line that come across slip ring and then convert the line to BNC .......!11
what problems that i will occur and how i can deal with it .....
]thanks

1. If the tow-line is short (say, <50m) you may try to connect vide signal to one wire and video GND to the other wire, and that should be it ..
2. If it is longer (closer to 100m and more) you may consider treating it as a pair of wires and using a passive UTP-BNC video converters (go google) at both ends transmit video signal that way.
See: http://cgi.ebay.com.au/Video-Coax-UT...506123001r5076

In both cases you may face attenuation of the higher part of the video signal (this will be first seen as weaker colour signal and then, if the losses are grater, B&W and loss of contrast – sharpness). If that’s the case you may need a video line driver (or receiver) that can compensate for these loses ..

Rgds,
IanP

http://www.national.com/an/AN/AN-1240.pdf

hi,
It's very simple. you can directly contact a two wire slip rings to BNC.

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