50
Basic operations
Masking the key signals
These steps are taken to mask the key signals using the
mask signal of the box pattern.
1
Press the
KEY1
CKEY
button to light its indicator, and display
the Key menu.
2
Use [F1] to display the Mask sub menu.
3
Use [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 Mask Adjust
sub menu is masked.
4:3
The signals are masked to the 4:3 aspect
ratio.
4
Use [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.
5
Use [F1] to display the Mask Adjust sub menu.
6
Use [F2] to [F5] to set the area to be masked.
Operation/
Parameter
Description of
setting
Setting range/
Initial value
F2/
Left
Key left position
−50.00 to 50.00/
−25.00
F3/
Top
Key top position
−50.00 to 50.00/
25.00
F4/
Bottom
Key bottom position
−50.00 to 50.00/
−25.00
F5/
Right
Key right position
−50.00 to 50.00/
25.00
The Left setting cannot exceed the Right setting (and
vice versa) and, similarly, the Top setting cannot exceed
the Bottom setting (and vice versa).
<Key mask setting> (figure shows the default values)
0
50
-50
50
0
-50
TOP (25)
BOTTOM (-25)
(25)
RIGHT
(-25)
LEFT
Area masked
Area where the key signal is effective
Video signal range
