security.solutions 0 Posted September 11, 2010 I was wondering if anyone could help me with this I've got a camera with a bare ended cable connected, it confuses me since it only has 3 wires and i assume it would need 4 because of power + video. Here is a picture of the cable stripped it has 2 wires with plastic coating and 1 which is like the messed up wire in a coaxial and i've twisted it together. If anyone could help me on how this needs to be wired up to a BNC adapter or a Passive Baluns cheers. Share this post Link to post Share on other sites
Birdman Adam 0 Posted September 11, 2010 This is typical with cheaper cameras with the pre-fabbed cable... The RED is your positive power, probably 12VDC. The YELLOW is the signal wire, you could think of it as the center conductor in coaxial cable. The BARE copper must be the GROUND, for both the power and signal. They do this commonly on cheaper cameras because its cheaper to use the same ground for power and signal, (at the cost of the possibility of grounding and signal problems). Only once you get into cameras that can accept 12VDC or 24VAC do you get ones that have separate signal and power grounds. Share this post Link to post Share on other sites
Soundy 1 Posted September 12, 2010 ^What he said. Common ground between video and power is common with many (most?) board cameras... better units avoid the related issues by adding voltage regulation, which isolates the two grounds on the external connections. Share this post Link to post Share on other sites
security.solutions 0 Posted September 12, 2010 Thank you both got it working with what you told me, bit a a mess with wires but it works. Is there any easy type of connector that i could buy and solder the wires on to it. The camera is this http://www.vdomain.co.uk/pdfs/CAM0114.pdf Cheers Share this post Link to post Share on other sites
Birdman Adam 0 Posted September 12, 2010 I can't think of anything off the top of my head... All I can think of is to take a female BNC and just solder yellow to the center, and some of the ground to the outer part. Still messy though! Why is it that these cameras have just bare wires on the end?? I would think that they would normally come new with a power jack and a female BNC connector. Share this post Link to post Share on other sites
security.solutions 0 Posted September 12, 2010 Yeah that's what i was thinking, well the end got damaged so the wire was cut. I don't have the end so couldn't rewire it. Thanks for the help. Share this post Link to post Share on other sites
