jacksondillard

hello I am up to my head in different ways of dealing with security around my bosses home. I two PTZ Dome camera+ptz controller from ebay - they came from china and manuals are confusing. Anyways i need help ffiguring out what i need. I know i need something having to do with a balun. I don't know much about this. I currently have a security black box comp running vista on it and have bnc+power cable buried to the camera locations. i unplugged one of my cameras and put up the ptz to test it outand i get a picture on the black box but i dont know how to use the controller i know that one of the three wires coming from the ptz isn't being used. i know i need an rs485 adapter on the back of my computer, but what else do i need and where can i get rs485 wirebecasue i need to get more to run from the controller as well im confused!