NV3000 - Image Jumping at Night

[faisalalvi 0]

Hi...

 

I have a weird situation here with a Windows Based DVR with AVER NV3000 card. At night time the image for all four channel starts to jump or roll as you may call it... but during day time everything works like a charm! I have Q-See IR dome cameras.

 

Any ideas what could be going on here?

 

Thanks in advance.

 

Faisal.

[CCTVguru1 0]

Hi...

 

I have a weird situation here with a Windows Based DVR with AVER NV3000 card. At night time the image for all four channel starts to jump or roll as you may call it... but during day time everything works like a charm! I have Q-See IR dome cameras.

 

Any ideas what could be going on here?

 

Thanks in advance.

 

Faisal.

 

it is most likely the sync pulse is too weak from the camera rather than the DVR. It may only be one camera but it can upset some DVR's on other inputs.

I have seen this before.

 

In theory, the sync pulse should not change based on light conditions but the AGC in some cameras seems to affect this

[C. P. 0]

Hmmm, sounds like a voltage problem. The LEDs at night can suck up a lot of amps. Maybe try to bump up your amps if it is a 12volt (at least 1 to 1.5) or check your power cable.

[todoenred 0]

Hmmm, sounds like a voltage problem. The LEDs at night can suck up a lot of amps. Maybe try to bump up your amps if it is a 12volt (at least 1 to 1.5) or check your power cable.

I agree, check power supply and spec. of cameras.

Regards