Hi folks. I am presently trying to sort out our village hall cctv. the system as was consisted of one largish outdoor camera of indeterminate make and 7 indoor cameras with the name ob sys on them. All seem to be monochrome and none have IR illuminators. The old d v r had given up the ghost and would no longer record. It had 4 input channels and one output channel (sound and vision) to a monitor. Only two of the dvr inputs were used as there were two scanning multiplexers name ob sys on them too with 4 camera inputs each. One camera on each multiplexer does not work so the scan was disabled and only the front entrance and back entrance were actually observed. Unlike the modern cameras which have a 2.1 / 5mm 12 volt power connector, a BNC video connector and an RCA sound connector for plug and extend connections the old cameras have 4 pin and shroud (5 wire) moulded on connection plugs with lo-o-ng leads between camera and multiplexer. The moulded plugs resemble s-video connectors. To cut a long story short I have bought a new 1Tb 8 channel dvr to allow full individual camera control/recording, with 8 BNC video iinputs, 8 RCA sound inputs. Today installed it in place of the defunct unit and connected it to the old monitor. I have one new camera installed and working and for the short term connected the multiplexer outputs to two of the available 8 new inputs. The old cameras which are still working I hope to use with the new dvr but to do so I need to fathom out what each wire in the cable to the camera does. These are red, black, yellow, translucent and copper braid. Google has not been my friend with this as the cameras and multiplexers are old and must be obsolete. So - is anyone familiar with these beasts and knows what the colours signify (presumably red black is power)? Also is the old camera signal likely to be compatible with what the new dvr expects to see? Sorry for the length of the question John
- posted
11 years ago