If you try to attenuate a video
signal, there is a point at which
the picture hecomes unstahle
rather than weaker. This happens
because the sync pulse are
attenuated also. and the monitor's
internal picture timing circuits
go into free-running
mode, being unable to detect a
valid input signal. This prohlem
may be solved by applying a
separate sync signal and attenuating
the video component
only.
Downloading of this magazine article is reserved for registered users only.
Discussion (0 comments)