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Service Mode
Dynamic Astigmatism (spot shape adjustment)
The spot shape adjustments correct the spot shape in 8 different
areas on the screen for all three colors separately.
The spot shape is adjusted according to the axial axises and the
diagonal axises when using the arrow keys on the RCU.
These adjustments have to be done on a dot pattern (e.g. the
internally generated pattern) with standard line frequency (15 kHz).
The adjustment values are stored in the EEPROM and remain the
same for all frequencies.
Follow the next procedure :
Highlight 'Dyn. Astigmatism' by pushing the control disk up or down
and press ENTER to select.
EXIT returns to the path selection main menu.
Select the source type, selected source or genlock pattern, by
highlighting the color for which the spot shape has to be corrected
and press ENTER .
e.g. when selecting RED under 'on genlocked pattern', the projector
switches to a genlocked pattern.
Press ENTER to continue adjustment.
Increase the contrast level using the Contrast Control to near maxi-
mum. Using that "+" Sharpness Key, defocus the image until the dots
are large and easily visible. Press ENTER to continue to SEL.
SEL : select the adjustment area on the screen where the spot shape
has to be corrected.
Use the arrow keys to select one of the 8 areas. Press ENTER to
continue to ADJ.
ADJ : adjust the spot shape in the axial or diagonal direction when
using the arrow keys for the selected area. Adjust until the spot shape
is circular.
8 - 6
1
4
6
Spot shapes
before dynamic
astigmatism correction
Diagonal
astigmatism correction
(use the
and
arrow key)
Axial
astigmatism correction
(use the
arrow key)
SERVICE MODE
IDENTIFICATION
COPY A BLOCK
DELTE A BLOCK
DELETE ALL BLOCKS
CHANGE PASSWORD
CHANGE LANGUAGE
RUN TIME
SET TO MIDPOSITION
CONVERGENCE MID
DYNAMIC ASTIGMATISM
MORE...
Select with
then <ENTER>
<EXIT> to return.
SEL : select area using arrow keys
ADJ : adjust axial astigmatism
5975188 RETRODATA 808s 040697
2
3
5
7
8
Spot shapes
after dynamic
astigmatism correction
and
or
DYNAMIC ASTIGMATISM
ON SELECTED SOURCE
RED
GREEN
BLUE
ON GENLOCKED PATTERN
RED
GREEN
BLUE
Select pattern or color
with
or
then <ENTER>
<EXIT> to return.
DYNAMIC ASTIGMATISM
First adjust the defocusing
of the image.
using
or
, diagonal
astigmatism using
or
Toggle between SEL and ADJ
with <ENTER>
<ENTER> to continue
<EXIT> to return.
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