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Chapter 4—Setup Adjustments
4.4. CRT Focus and H/V Dynamic Focus
The CRT and H/V Focus adjustments are factory-set and do not normally require
adjustment. They should be performed together in a back-and-forth manner to
achieve the best possible overall focus.
To perform the CRT Focus:
1.
From the F
2.
Select G on the remote.
3.
Select the S
4.
Use the up/down arrow keys to obtain the best possible focus in both the
center of the screen and in the overall test pattern.
5.
Repeat the above steps for R and B.
To perform the H/V Dynamic Focus:
1.
From the F
2.
Continue with the S
NOTE: The H/V Dynamic focus is performed on all three (3) colors together
and the colors are not individually selectable.
3.
Use the up/down arrow keys to achieve the best possible focus at the edges
of the screen.
4.
Repeat the CRT Focusing from above, then repeat the H/V Dynamic Focus
again. Several iterations may be needed to achieve the best possible overall
screen focus.
®
4.5. ILA
Sensitivity and Bias
®
ILA
Sensitivity and Bias are preset for the factory-set sources and will not
normally require adjustment. Readjustments may be required due to variations
between the factory and the field environments. When new sources are set up,
®
ILA
Sensitivity and Bias must be set (or copied from another source and
touched-up) for each new source.
The ILA
start with Blue since Blue is a weaker color to observe than Red or Green. The
®
ILA
Sensitivity is the ILA
brightness on the screen. The ILA
to each ILA
from the CRT will cause the ILA
adjustment will put each ILA
incorrectly, the black level will be adversely affected and the ILA
not react properly to incoming light. Perform all ILA
darkened room.
4-22
CRT Focus and H/V Dynamic Focus). This factory-setting does not
normally require readjustment. The F
P
REFERENCES MENU
defocusing.
A
ACTORY
DJUSTMENTS MENU
C
TANDARD
ROSSHATCH
A
ACTORY
DJUSTMENTS MENU
TANDARD
®
Sensitivity and Bias can be adjusted for any color. It is preferable to
®
biasing frequency that affects the resolution and
®
assembly to a "just off" threshold point. The smallest incoming light
®
OCUS
may now be unchecked to prevent accidental
, select CRT F
test pattern.
, select H/V D
C
test pattern from above.
ROSSHATCH
®
bias settings adjust the electrical bias levels
®
assembly to react. When properly set, this
assembly at the threshold of operation. If set
Hughes-JVC Technology Corporation
E
box in the
NABLE
.
OCUS
F
.
YNAMIC
OCUS
®
assembly will
®
Bias adjustments in a
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