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(8) Adjusting the screen distortion
a)
Screen distortion
The
SIDE PIN
and
TRAPEZOID
controls are
provided to adjust the screen distortion.
Pressing the
EXPAND
switch executes these
adjustments alternately.
These two preset data can be set differently for
each signal format. In the case of HDTV signal,
different data is set also for 16:9 and HD 4:3 SCAN.
b)
Precautions
As the SIDE PIN and TRAPEZOID settings are
stored as the data for each signal format, do not
perform the following operations during the
setting.
Performing any of the switching below will call the
data in a different format and clear the data you
are now working on.
Switching channels
Changing input signal format
Switching SCAN
Switching ASPECT
c)
Adjustment procedure
①
Input signal
Check the MENU 1 format is set properly to the
signal format to be changed.
For details of the format setting, refer to 4.7(3) in
this manual.
Input a crosshatch signal or select the crosshatch
internal TEST signal.
②
Adjusting TRAPEZOID
Set the EXPAND switch to ON. The TRAPEZOID
adjustment mode is entered. Adjust the trapezoid
as shown in the figure below.
③
Adjusting SIDE PIN
Set the
EXPAND
switch to ON again. The SIDE
PIN adjustment mode is entered. Correct the side
pin distortion as shown in the figure below.
④
Before proceeding with the adjustments and
changes in
②
and
③
for a different format, first
store the changed data and then switch the signal
to a different format.
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<OK>
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<OK>
(9) Adjusting the screen size
a)
Screen size
Set the screen size using HEIGHT and WIDTH.
The following four sizes can be set for these two
data per signal format (three sizes for HDTV).
Individual data is provided for all formats which
can be input, for the following sizes.
SCAN
switch:
NORMAL SCAN
UNDER SCAN
ASPECT
switch:
4:3 SCAN
16:9 SCAN
b)
Precautions
As the HEIGHT and WIDTH settings are stored
as the data for each signal format, do not perform
the following operations during the setting.
Performing any of the switching below will call the
data in a different format and clear the data you
are now working on.
Switching channels
Changing input signal format
Switching SCAN
Switching ASPECT
c)
Adjustment procedure 1
(UNDER SCAN (HD 16:9, SD 4:3/16:9)
Adjust HEIGHT and WIDTH for HDTV 16:9 and
SDTV 4:3/16:9 UNDER SCAN as follows.
①
Input signal
Check the MENU 1 format is set properly to the
signal format to be changed.
For details of the format setting, refer to 4.7(3) in
this manual.
The input signal should be one having a circle
pattern, which can display video on the whole
active screen area.
②
Adjusting HEIGHT and WIDTH
Set the desired aspect using the
ASPECT
switch,
and set UNDER SCAN using the
SCAN
switch.
Set the MARKER switch to ON, and select the
100% marker.
Adjust HEIGHT and WIDTH so that the 100%
marker size becomes the UNDER SCAN size in
the following table.
<UNDER SCAN Sizes>
ASPECT
FORMAT
HEIGHT
WIDTH
4 : 3
SD
270mm
360mm
16 : 9
SD/HD
203mm
360mm
HEIGHT
WIDHT
HEIGHT
WIDHT
〈4:3(UNDER)size〉
〈16:9(UNDER)size〉
* Before proceeding to adjust another SCAN size,
be sure to press the CHANGE PRESET switch
now to store the current data.
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