Quote:
Originally Posted by Ed in Tx
Definitely looks like 60 Hz AC related. I notice a band of the interference takes about 17 seconds to go up the screen and start over at the bottom.
|
Yes.
The noise burst creeps upward because the field rate was changed to accommodate NTSC compatible color television.
NTSC sends about 59.94 frames/second, but our utilities still use 60.00, the motion is a result of the difference
(1) over (60.00 - 59.94) = 16.666.... seconds.