IDK MSD-5401 User Manual page 60

[IN1 POSITION]
H: 0 V:
↓ ESC key: Returns to the previous screen.
2. To set the input video position (pixel position) using commands:
@SNP: Set input position
@GNP: Get input position
▲▼keys: Set the vertical position of IN1.
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MSD-54 SERIES User's Guide