Jaws
LIFE MEMBER
- Sep 26, 2008
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- C class, Chieftain
- Exp
- since 2006 ( I think ! )
I have two cameras on the back of the van.. One wide angle and one with a 16mm focal length lens which gives ABOUT the same view as an interior mirror would give ( back of the van has a garage in the way for a 'normal' mirror )
Both cameras go to a 7" split screen monitor on the dash
After about a year installing the long range unit, I started getting light, travelling up the screen, interference lines which only occur when the engine is running
So far I have tried ( in order of attempts )
Swapping the feeds to the monitor but the lines moved as well, so nowt to do with the monitor ( I did think it unlikely but it WAS the easiest thing to try ! )
Re-wiring the voltage feed to a different point
Tapping the camera in case it was vibration causing it
Again altering the 12v feed, this time sharing the feed from the other camera
and yesterday, spent 2 hours running new pucka low loss coaxial cable from front to back
Then tried a blocking diode and a couple of caps on the 12v feed and also a cap and L ladder filter on the video feed
Nothing has made the slightest difference ! ( actually, not quite true.. Replacing the coax has resulted in a much better picture over all when stationary but seems to have enhanced the interference by the same amount when the engine is running )
I have now ordered a replacement camera ( ones with a 16mm lens at a reasonable price are few and far between ! ) as that is really the only thing left....
But I would be interested to hear others thoughts and ideas on this problem .....
Both cameras go to a 7" split screen monitor on the dash
After about a year installing the long range unit, I started getting light, travelling up the screen, interference lines which only occur when the engine is running
So far I have tried ( in order of attempts )
Swapping the feeds to the monitor but the lines moved as well, so nowt to do with the monitor ( I did think it unlikely but it WAS the easiest thing to try ! )
Re-wiring the voltage feed to a different point
Tapping the camera in case it was vibration causing it
Again altering the 12v feed, this time sharing the feed from the other camera
and yesterday, spent 2 hours running new pucka low loss coaxial cable from front to back
Then tried a blocking diode and a couple of caps on the 12v feed and also a cap and L ladder filter on the video feed
Nothing has made the slightest difference ! ( actually, not quite true.. Replacing the coax has resulted in a much better picture over all when stationary but seems to have enhanced the interference by the same amount when the engine is running )
I have now ordered a replacement camera ( ones with a 16mm lens at a reasonable price are few and far between ! ) as that is really the only thing left....
But I would be interested to hear others thoughts and ideas on this problem .....