CCTV Camera

what move? body? or pic?

Dave? Dave? what are you doing Dave?

You shouldn't have done that Steve

the body is moving to other corner up and down or left and right.

and sometimes when you control it , it will not stop suddenly it is like there is a delay before it stops. and very often the camera is moving without any command from the operator.

haha, I guess your camera head is using for safty monitor in bank, on street, or ...

you want ot control it, but it was out of control.

its easy. no porblem. I can fit it. check your control part. check given cab. value. check capacitor in it. it must be something wrong with it.

check ternimal socket. dont break wire any more.

enough.

Noise

Noise can come from different places and objects. If the controls for the camera are not properly shielded, false signals from things like variable-frequency-drives or radio transmitters can affect it.

A ground loop is also a source of noise and this can cause strange things to happen. I know, because I've seen a lot strange things myself.

I suppose it is using a stepper with a build in controller to move.

An AC signal on the 2 terminals (step & direction) will cause it to move to one side.

when step is positive direction will be negative therefore movement.

When step is negative direction will be positive = no movement.

You could try an inductor(s) on your connections at the camera end, or shielded cableing. Re-route your cable away from ballasts and motors and power wires. More details are needed for a suggested fix. Another possible cause is button/joystick/whatever from the controller making intermittent contact.

My first thought was "the joystick". Try disconnecting the joystick while it is moving and therefore confirming or ruling out the failure mode.

My first GUESS would be an intermittant cable. Assuming that the camera is the only moving part, I would look for the problem at that end. Is there any way you could look at the control lines with an oscilloscope at the camera end?

Bill

No. I think you all have it wrong.........................secure it tightly on its mounting, it is moving about in the wind!!!!

I think selective disconnection is the fastest way to diagnose the problem. Also, monitor signal @ camera on scope to see if noise explain it. You may have to measure each terminal also relative to earth ground to detect common mode issues if you have isolated scope.

If it has a motion sensor disconnect it. If it has no motion sensor disconnect it.