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1.7.4.6. CLAMP (When S.ANALOG is input)
Adjust it only when the following problem occurs.
Used to adjust clamp pulse position and width according to the timing of input signal, when the
whole image is darkened or horizontal uneven brightness appears on the image.
CLAMP is automatically set to the optimum value when you set CLAMP START=0, CLAMP
WIDTH=0.
[Procedure]
1.
Select CLAMP START in the menu 1 (page 3).
2.
Adjust the clamp pulse start position according to the timing of the input signal.
3.
Select CLAMP WIDTH in the menu 1 (page 3).
4.
Adjust the clamp pulse width according to the timing of the input signal.
1.7.4.7. MASK
Adjust it only when the following problem occurs.
Used to adjust when the upper or lower part of the image is distorted while 3-line signal (sync on
green) or 4-line signal (composite sync) is input.
[Procedure]
1.
Select MASK START in the menu 1 (page 3).
2.
Set the maximum value that resolves the image distortion.
3.
Select MASK END in the menu 1 (page 3).
4.
Set the minimum value that resolves the image distortion.
1.7.4.8. SYNC SELECT (When S.ANALOG is input)
This adjustment is normally unnecessary since it is automatically set in automatic input
signal scanning.
In the case of 5-line input (separate sync), if HD/VD is selected, FINE may be adjusted more
easily. While 5-line (separate sync) or 4-line (composite sync) signal is input with sync on green,
the clamp pulse on the green channel cannot be adjusted. In this case, follow the procedure
below to set sync on green.
•
AUTO： Select to set optimum signal automatically.
•
HD/VD： Select when 5-line signal is input.
•
SOG： Select when sync on green signal is input.
[Procedure]
1.
Select SYNC SELECT in the menu 1 (page 4).
2.
Select AUTO, HD/VD or SOG.
VS-50XL20U, VS-67XL20U, VS-50XLW20U
Set-up and Installation Manual
42
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