Stu Mannix Posted October 7, 2011 Share Posted October 7, 2011 Hi, Just a quick question...I have just started to get 'ghosting' on my projected image. It was fine yesterday! Is this a VGA cable problem or other cables crossing over the VGA cable? Link to comment Share on other sites More sharing options...
Shez Posted October 7, 2011 Share Posted October 7, 2011 Ghosting is traditionally caused by signals bouncing up & down the cable due to an impedance discontinuity. Check your connections are tight and make sure someone hasn't crushed the cable anywhere.Hitting auto-adjust can cure all sorts of timing woes too. Link to comment Share on other sites More sharing options...
Stu Mannix Posted October 7, 2011 Author Share Posted October 7, 2011 Thanks Shez. I'll try the auto adjust first. Then change the cable. Just wanted to see if I was on the right track. Link to comment Share on other sites More sharing options...
badweasel Posted October 7, 2011 Share Posted October 7, 2011 Hi Stu, Yes ghosting is a signal path/cable problem. A ghost of the image will show to the right, and the offset is related to the distance at which the signal gets bounced back. Common causes of ghosting are cable joins and mismatching of impedance. This is different from smearing which is due to high frequency attenuation (long or poor cabling). If two cables cross (at 90 degrees) then you will get no interference. Interference can occur when two cables run parallel. Good luck Dave Link to comment Share on other sites More sharing options...
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