Olson Technology LCM-500-550 - Manual (Page 4)

025-000181 REV C Page 4
Table 1. F.C.C. OFFSET FREQUENCIES
4) VIDEO MODULATION ADJUSTMENT
A) Connect a video source of approximately 1v p-p to the video input connector (75
Ω
input Z) on the
rear panel. The video should be of a reasonably bright scene (commercials are usually excellent).
B) Rotate the video modulation control (MOD) slowly clockwise until the video overmodulation light
(O/M) just turns on. The light may blink with differences in average picture level. CAUTION: If the
modulation is set too high, compression or lack of contrast will occur during high intensity scenes.