cctv video signal loss... help pls

[legendryrama 0]

hi ,

i have a 700tvl 1/3" DIS camera via utp cat5 and passive baluns(25feet) . power source 12v dc 1amp.

connected directly to a monitor for realtime montoring.

 

i get video signal losses every now and then. once signal lost , i have to disconnect and reconnect my BNC rca adapter from the monitor.

 

some times the video loss is during the night and day vision changing.(i mean IR ON/OFF). some times even during voltage fluctuations.

 

IS this a ground loop problem?

help pls....

 

i have attached a sample video of the problem

4MCLtCte37E

[aibudo 0]

Could be that the 12V supply that you are using just isn't up to the load. Much more current required when the IR's are turned on.

[legendryrama 0]

But the camera is on even during the signal losses... if voltage not enough the camera should turn off no??

[milkisbad 0]

Could be bad Balun or loose connection. Are you running the power through the Cat5 also? You can double up on the wiring for the power or increase to 1.5 - 2 amp power.

 

"i get video signal losses every now and then. once signal lost , i have to disconnect and reconnect my BNC rca adapter from the monitor."

 

If this fixes the problem (without you turning off the power) could be bad bnc to rca adapter/ balun connection.

[legendryrama 0]

Hi,

I use 3 pairs for power and 1 pair for video (cat 5).

i'll replace the bnc rca adaptor and see..

 

thanks 4 ur reply

[legendryrama 0]

i replaced the rca adapter but of no use still.. the problem continues.. have asked the dealer to check the camera

[tomcctv 187]

Hi. Power supply is too small as aibudo says.

 

 

With low power you camera will still stay on I.e your IR but then not enough power to run camera

 

1amp is not enough for a IR camera