Adjusting The Screen Distortion; Adjusting The Screen Size - Ikegami HTM-1917R Operation Manual

(7) Adjusting the screen distortion

a) Screen distortion
The SIDE PIN and TRAPEZOID controls are pro-
vided to adjust the screen distortion.
Pressing the EXPAND switch executes these ad-
justments 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 set-
ting.
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.
< NG >
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.
< NG >
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.

(8) Adjusting the screen size

< OK >
< OK >
28
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). In-
dividual data is provided for all formats which can
be input, for the following sizes.
SCAN switch
ASPECT switch
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 pat-
tern, 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
4 : 3 SD
16 : 9 SD/HD
HEIGHT
WIDHT
〈4 ： 3 （UNDER） size〉
* Before proceeding to adjust another SCAN size,
be sure to press the CHANGE PRESET switch now
to store the current data.
NORMAL SCAN
UNDER SCAN
4:3 SCAN
16:9 SCAN
HEIGHT WIDTH
270mm 360mm
203mm 360mm
HEIGHT
WIDHT
〈16 ： 9 （UNDER） size〉