Page 8-5
Scan Velocity Modulation Key Points
• The input signal is a differentiated video signal from the VCJ.
• The signal is amplified and applied to the three SVM coils.
• The signal either aids the horizontal deflection signal (increasing horizontal scanning velocity), or
bucks the deflection signal (decreasing scanning velocity).
• The SVM effects scanning velocity at sudden video transition from black to white, or white to black
• The scanning velocity is increased in the black area at a transition, and decreased in the white area
at a transition.
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