633. Basic operations3-4-8. Masking the key signalsThese steps are taken to mask the key signals using the mask signal of the box pattern.Press the [KEY] button to light its indicator and display the KEY menu. Refer to “2-1-5. LCD menu area”.Turn [F1] to display the Mask sub menu.KEY 10|Mask |Invert | |Mask | Off| Off| |Manual4:3OnTurn [F2], and select the masking method using the Mask item.Off: The key signals are not masked.Manual: The area that is set using the MaskAdj sub menu is masked.4:3: The signals are masked to the 4:3 aspect ratio.Turn [F3] to set whether to invert the mask signal using the Invert item.On: The mask signal is inverted.Off: The mask signal is not inverted.Turn [F1] to display the MaskAdj sub menu.KEY 11|Left |Top |Bottom |RightMaskAdj | −25.00| 25.00| −25.00| 25.00Turn [F2] to [F5] to set the area to be masked.Operation Parameter Description of setting Setting range Initial valueF2 Left Key left position −50.00 to 50.00 −25.00F3 Top Key top position −50.00 to 50.00 25.00F4 Bottom Key bottom position −50.00 to 50.00 −25.00F5 Right Key right position −50.00 to 50.00 25.00The Left setting cannot exceed the Right setting (and vice versa) and, similarly, the Top setting cannotexceed the Bottom setting (and vice versa). (figure shows the default values)050-50500-50TOP (25)BOTTOM (-25)(25)RIGHT(-25)LEFTArea maskedArea where the key signal iseffectiveVideo signal range
