Roland V-800HD Owner's Manual page 40

Compositing the Video
4.
Output the composited results.
Press the [DSK] button to output the results of compositing. The logo or text fades in. The fade time depends of your setting of
transition time.
fig.DSK-button.eps
5.
Switch the background picture.
You can change the background picture while continuing to display a logo or text unchanged. Use the buttons on the [PST/
EFFECT] side to select the standby video, then use the [AUTO] or [CUT] button or the video fader to change the background
picture.
When you are using external key, DSK cannot be used. When using DSK, be sure to set [Key Mode] to [Self Key].
The settings of a compositing operation for a DSK source will be remembered. Just press the DSK button to make the DSK source appear or
disappear.
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