CCTV question

[Norman Dayton]

Several years ago I installed a single camera, monitor and recorder. The
business uses this to verify when there employees show up to work. They
have reported that the recorder is now jumpint when they view the tape. I
have replaced one at a time the camera, monitor, and recorder and the video
still jumps when viewing the recorded tape. Any brilliant ideas?

Norman Dayton

 

[Jackcsg]

Are your Cameras AC or DC Powered?

Jack

 

[petem]

video sync is bad...

try to use the same electrical circuit (breaker) for all the device it will
helps...

 

[robert]

Robert wrote:
I agree it is a sync problem. If the cameras are powered from various
outlets this can cause the problem. Some quads splitters strip the sync off
the incoming signal and re-introduce a new one. If the cameras are being
powered off of various outlets you can sometimes fix this problem by
floating the ground. You use a two prong adapter to plug the ac into.

 

[Norman Dayton]

All devices are powred from the same outlet, there is only a camera,
monitor, and recorder. The recorder was swapped with a newly rebuilt unit
and it made no difference, the camera was replaced and made no difference.
Any other ideas?

 

[robert]

Robert wrote:
Vertical roll or tearing is a sync problem. If all the cameras are located
on the same power supply and you have the problem, then I would look to the
following:
1. The power supply to the cameras is going bad and the power signal is not
clean. Meaning it output is causing the sync problem. This would most
likely cause all the camera inputs to roll but not always.
2. If it is only one camera out of 4 that is rolling, then the camera's sync
would be suspect. Move the camera input to another channel and see if the
problem moves. If this problem moves then it could be the camera. (see
number 4 too)
3. If the cameras are plugged into a quad, you may have a bad sync channel.
Move another camera to this channel and see if the problem follows.
4. Interference from some device that is causing RFI is effecting the
coaxial cable signal. To fix this would mean moving the cable or RFI
source. If the system has been installed for a while and all of a sudden
has problems, ask the customer if any new electric devices were installed
around the date the problem started. This may shorten your search for the
item causing the RFI. To test: Take the camera and a short patch cable.
Then plug it into the head end and see if the problem disappears. If the
problem didn't disappear than see #2