VS-50XL20U, VS-67XL20U, VS-50XLW20U
Set-up and Installation Manual
34
1.6.3. Signal
adjustment
1.6.3.1. H.POSITION, V.POSITION
Used to adjust the image position to minimize the no signal area on the upper left of the screen
when the image position is incorrect.
[Procedure]
1. Select H.POSITION in the menu 1.
2. Set the maximum value not to display the no signal area on the upper left of the screen.
3. Select V.POSITION in the menu 1.
4. Set the maximum value not to display the no signal area on the upper left of the screen.
1.6.3.2. H.TOTAL, FINE (When ANALOG is input)
Used to adjust H.TOTAL when vertically striped noise or jitter noise appears on the image, or the
whole effective area cannot be displayed after image position adjustment. If the horizontal
position of the image shifts after H.TOTAL adjustment, adjust H.POSITION again.
[Procedure]
1. Select H.TOTAL in the menu 1.
2. Adjust to eliminate the vertically striped noise.
3. Press [ESC] button and select FINE in the menu 1.
4. Adjust to eliminate the jitter noise.
If the jitter noise cannot be improved by H.TOTAL and FINE adjustment, adjust CLOCK RANGE
(chapter 1.6.3.5).
1.6.3.3. CLAMP (When 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.
2. Adjust the clamp pulse start position according to the timing of the input signal.
3. Select CLAMP WIDTH in the menu 1.
4. Adjust the clamp pulse width according to the timing of the input signal.
1.6.3.4. SYNC SELECT (When ANALOG is input)
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.
[Procedure]
1. Select SYNC SELECT in the menu 1.
2. Select
SOG.
