Strange moving bars on image (Hikvision analogue CCTV system)

[G1ose]

Hi all,

I've had my Hikvision system up and running for a while now however recently I've had a few strange issues.
First is a strange banding on the screen I've attached a few pictures. It seems to happen on 2 of the cameras and they move around.

Second is one of my cameras randomly keeps dropping off, restarting hasn't helped, I've played around unplugging etc and then it will appear for a while before going again. Any ideas what might be causing?

Any help greatly appreciated

 

[fullboogie]

Between the picture quality problem and the dropping off, I'd suspect a power problem or connector (outside) problem. Can you pull one down and set it up inside with a new cable to compare? Have you looked at the power consumption on the direct interface (monitor) to see if the problem cameras show a power problem compared to the others?

 

[Phil]

Hi all,

I've had my Hikvision system up and running for a while now however recently I've had a few strange issues.
First is a strange banding on the screen I've attached a few pictures. It seems to happen on 2 of the cameras and they move around.

Second is one of my cameras randomly keeps dropping off, restarting hasn't helped, I've played around unplugging etc and then it will appear for a while before going again. Any ideas what might be causing?

Any help greatly appreciated

Is this an analogue system?
Uses co-ax cables?

If so, they are hum bars.
A ground loop isolator will solve the problem:

(Even) More technical explanation here:

 

[G1ose]

Thanks for hr replies.

It's a HD system run through Ethernet cables with video and power baluns at each end.

Not checked on the direct interface, I'll have a play tomorrow and see what I can find. Is there anyway of being able to access the full interface remotely rather than directly?

Thanks again

 

[fullboogie]

The power consumption menu is only on the NVR direct interface.

 

[Phil]

What is the model number of your DVR please?

 

[G1ose]

Thanks for the replies.
I have the DVR-208U-K1 running V3.5.36 build 180329

I can't however (my bad ) find the power consumption information, where does this live in the software?

 

[G1ose]

bump any help on the power consumption info would be greatly received.

 

[Phil]

I'm not sure that it's applicable, as you have a DVR, not an NVR.
DVRs are for analogue / co-ax cameras.
NVRs are for network cameras.
NVRs provide power over the network cable using POE, hence they can show the power that the cameras are drawing.

 

[G1ose]

Thanks for the reply

In which case I'm back to point 0 in understanding what could be the problem here. Any new ideas?

 

[Phil]

Installation/cabling; bring the camera(s) close to the DVR on temporary short cables to prove this.