Sony DVS-9000 User Manual page 658

To combine the video images after applying a shadow
Use the Combiner function to select channel 1 + channel 2 and channel 3 +
channel 4, then turn [Ch 1 Shadow] and [Ch 3 Shadow] on.
To apply a shadow after combining the video images
Use the Combiner function to select channel 1 + channel 2 + channel 3 +
channel 4, then turn [Ch 1 + Ch 2 Shadow] on.
658
Global Effect Operations
Knob Parameter Adjustment
1 Luminance Luminance
2 Saturation Saturation
3 Hue Hue
Ch1
Ch2
Ch3
Ch4
Ch1
Ch3
Ch2
Ch4
Setting values
0.00 to 100.00
0.00 to 100.00
359.99 to 0.00