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Chapter 4—Setup Adjustments
HJT Model 100 User's Guide 4-23
To set the ILA
®
Sensitivity:
1. Under the S
YSTEM
-P
REFERENCES MENU
, verify that the S
HUTTERS ON
H
IDE
box is checked.
2. Use the H
IDE KEY
and hide Red and Green.
3. Toggle the RGB
KEY
to highlight Blue.
4. Access ILA
®
S
ENSITIVITY
A
DJUST
from the M
AINTENANCE MENU
.
5. Use the up/down arrow keys to select an ILA
®
Sensitivity of 11 as indicated
in the screen window. This is the default setting and should be acceptable
for general viewing. A lower number may be preferred for HDTV. A higher
setting results in higher brightness but greater image lag and possibly lower
resolution. The ILA
®
Sensitivity setting depends on the type of viewing
environment. Some trial and error may be needed to get the exact setting for
each environment.
6. Press E
SCAPE
when the setting is complete.
NOTE: Computer graphics require high resolution but typically are not fast
moving—the ILA
®
Sensitivity will typically by set in the range of 11 - 15.
Video sources are typically lower resolution but have more movement—the
ILA
®
Sensitivity is set in the range of 8 - 11.
CAUTION!!!
Changing ILA
®
Sensitivity requires re-
checking and re-adjusting, if necessary, sensitivity offset, threshold
offset, and shading.
To set the ILA
®
Bias:
1. Use the same color from the ILA
®
Sensitivity adjustment
and with the same two (2) colors hidden.
2. Uncheck S
HUTTERS ON
H
IDE
. Hide the selected color.
3. Access ILA
®
B
IAS
A
DJUST
from the M
AINTENANCE MENU
.
Use the up/down arrow keys to decrease the ILA
®
Bias so the brightest area
of the ILA
®
image just extinguishes. Then increase the bias level until the
ILA
®
image just begins to appear on the screen.
NOTE: It is crucial to set the bias level so the selected color just begins to
appear on the screen. Find the spot on the screen where the selected color
first begins to get brighter and use that as the reference point. Adjust the
bias level above and below this point to find the setting where one (1) click
causes an increase in brightness and stop at that point. This insures that the
weakest signal will cause the ILA
®
assembly to respond properly.
Repeat the above ILA
®
Sensitivity and ILA
®
Bias procedures for the remaining
two (2) colors. Save the changes.