sounds as though back light compensation is turned on, turn it off and see if that helps.

Edited April 10, 200818 yr by satsuma01

1. Turn off AGC (dip switch)

2. Adjust Iris level potentiometer on camera pcb

3. Make sure cable is terminated into 75ohm

Is on the back of the monitor the termination switch set to High Z?

If you ask me AGC shouldnt be available on cams, it may enhance the signal strength on a night but any noise gets enhanced as well, if a picture is rubbish on a night then get some lighting

If you ask me AGC shouldnt be available on cams, it may enhance the signal strength on a night but any noise gets enhanced as well, if a picture is rubbish on a night then get some lighting

What alot of people don't realise either that a camera with agc on amplifies the noise in a picture as you rightly say, but since each pixel is changing with respect to its neighbour, video compression reduces hence a larger file size on a dvr than the same camera looking at a daytime image