Question about Home Security
I'm looking for wiring diagram for 4-wire surveillance camera system. I need to know how to separate audio and video signals from the system cable. Camera uses a 6-pin RJ-11 cable and a UTP on pins 2-3 and 4-5 to send both video and audio to a display switcher. Camera is powered by 9.6-27 VDC via pins 4 (+) and 5 (-). Pins 1-2 are driven by a balanced circuit. Audio is injected to both conductors of UTP through a 4.7uF Cap and a resistor divider. There's a 4 terminal device which appears to be an optical isolator between the divider and RJ-11 connector; there's no continuity between RJ-11 and driver sides of this 4 terminal device. Thanks.
Cut wires Blue whight yellow orange wires go to what on a security camera
Posted on May 16, 2012
Need to know what wires do what on security camera ive bought at car boot wires are 2 black 1 yellow 1white 1red would make my day if you have an answer thanks
Posted on Apr 08, 2011
So I have a 4-wire video doorbell. A bit old. According to the back of the doorbell unit, the four wires are V-Out (assume video out), A-Out (assume audio out), +B (assume Button), and -GND (assume ground). The camera and the infra-red LEDs need power when the video is switched on. The unit supports two-way audio and so there is a speaker and microphone in the unit. The microphone would obviously use the A-Out and Gnd, the camera the V-Out and Gnd, and so I assume the +B provides power to the camera, and LEDs (except when the button is pressed?). A small red led is always on, suggesting power is always available along the +B and -GND to power that.
I assume also that the "receiver" works by sensing the button is pressed (a different resistance in the circuit?) and then it switches on the video display and allows the microphone to on the unit to be heard at the receiver for the 180 seconds that it stays on.
Given the instructions and the limited wires and analogue simplicity, I would say the unit always draws 14W because the camera and microphone and the LEDs are always on and transmitting.
I just don't know how the audio signal is transferred back to the speaker...
On my unit, the green wire is V-Out, yellow is A-Out, red is +B and brown is -GND.
Posted on May 15, 2011
I have three wires coming out of my camera's chip board one looks clear and thicker than the other two ,red and bare how do I hook up a v wireing to this camera
Posted on Feb 10, 2017
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Posted on Jan 02, 2017
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