Image Not Clear

[safe_observation]

1. video connections 's problem

2. you can swap the cams -- you said you have two, right?

3. after swaping, if the same problem., it is the cam faulty -- ask the supplier to replace it

)

[cycop]

could it be due to faulty power supply too?

[barooga]

1. video connections 's problem

2. you can swap the cams -- you said you have two, right?

3. after swaping, if the same problem., it is the cam faulty -- ask the supplier to replace it

)

If you swap the camera and still have same problem, how is it the camera??

[safe_observation]

lol., i mean swap the two cams -- you said one cam was fine, the other is not good.

so you can use the fine cam's power supply and video cable to the other

then you can check how it goes

[DownUnderCamMan]

Maybe induced voltage on the coax cable!

Is the cable run with mains cables or near to them?

Maybe you need to re-route your cable run!

[cctvdownunder]

Maybe induced voltage on the coax cable!

Is the cable run with mains cables or near to them?

Maybe you need to re-route your cable run!

It could be a lot of things, however it is most likely a difference in ground potential, the best test is to use another camera or portable output device like a mini DVD player adn see if the problem persists, if not then it is not a cable fault, make sure though that the camera housing or bracket is not mounted without an earth, IE on bare metal.

Then if the problem does persist, try to re crimp the connectors, if it still exists and is 24VAC then change the wires around on the transformer...(so long as it is a power pack that supports this type of connection), then if it is not a Phase issue start looking for interference in the line, you could use a riser bond or simply re-route the cable, but before doing this, let old mate win his 10quid and try the humbug.

[satsuma01]

have you tried it directly into the monitor?

[secboy]

hi,

I have horizontal lines which looks like distortions on my CCTV video what could be wrong?

how do i enhance the signal for BNC cable?

Try the new cam directly plugged into the monitor without anything between.

If its still a problem then try the cam powered from the same power source as the monitor

If its still a problem then try the cam on a short flying lead directly into the monitor

If its still a problem it is almost certainly the new camera

if the 1st step showed no fault then something between the two is the cause

if step two cured it then there is a earth loop problem which should be cured by humbug or run power to it from the same point as the monitor and any recording equipment.

If step 3 cured it then the coax is faulty or picking up interference along its route

Hope that helps? Paul.

[v2comp]

It could be a lot of things, however it is most likely a difference in ground potential, the best test is to use another camera or portable output device like a mini DVD player adn see if the problem persists, if not then it is not a cable fault, make sure though that the camera housing or bracket is not mounted without an earth, IE on bare metal.

Then if the problem does persist, try to re crimp the connectors, if it still exists and is 24VAC then change the wires around on the transformer...(so long as it is a power pack that supports this type of connection), then if it is not a Phase issue start looking for interference in the line, you could use a riser bond or simply re-route the cable, but before doing this, let old mate win his 10quid and try the humbug.

Sorry for that question, could someone tell me more about humbug? What is humbug and how does it work?

Thank you.

[breff]

Sorry for that question, could someone tell me more about humbug? What is humbug and how does it work?

Thank you.

Its correct name is a 'ground loop isolator' it compensates for differences in earth or ground between equipment.