- Published in issue 7/1996 on page 74
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.