I need help on the problem which i am facing on installation of 6 hikvision cameras using cat 5 STP
Details:
5 Bullet cameras - 12 V DC of which one has 40 m IR other have 20 m
1 Dome - 12 V IR 20 m
All are HD
The cameras are outdoor ones are far apart from DVR. the 40 m IR bullet camera is 110 m from DVR. others are 60, 50, 60 m etc. one bullet and dome is in the office premises itself close to the DVR.
I have used passive video balus for all
Cat 5 STP is used for video and power. Total 3 cables were used for 6 cameras [2 pairs for two bullets in single line, one pair for power]. i used 12 v 20 amp power supply for powering the ameras
The problems i am facing are:
1. Day time i get 3 cameras images clearly. hooking the fourth results in blurred images/distortions in a few cameras. images comes and goes in a few cameras. i initially used 12 v and 10 amps & 12 v and 5 amps powersupply but of no use.
2. i got a 12v 20 amps but with little difference. The problem inceases at night when IR goes on. the camera at 110 [40 m ir] went down and doesn't work even when hooked to 12 v 20 amp PS alone. Other cameras shows more distorted image
I guess its because of a voltage drop but wonders why even it doesn't work with a 20 amp PS. There are no power sources available to most of the bullet cameras
3. Cameras [2 nos] in the office complex [10 m from DVR} works but has a colour band moving continuously in the screen one moving from right to left and other has moving colour band from left to right. is it because of any signal leaking?
Please help me to resolve the issue. please give your valuable suggestions