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October 9th, 1995
B. OPTICAL ADJUSTMENT (ELECTRICAL)
B.1. General
This procedure adjusts the electrical characteristics of the SBU. The SBU
mechanical adjustments (MTF, scan line, etc.) must be performed before this
procedure. The scanner firmware includes the functions for these
adjustments. The scanner responds to commands from the PC and runs the
adjustment program.
B.2. Tools
B.2.1. Hardware
•
IBM PC-AT or compatible
•
RS-232C Cable (Either Cross or Straight)
•
VIU (Video Interface Unit): G4045901
•
Jig Glass: G4049001
•
White Chart: G4043102
•
Gray Chart
•
Note:
The white and gray charts should be attached to the jig glass with
adhesive tape as shown in the following diagram. Note that the
gray chart should be attached to the glass with its printed (gray)
side in contact with the glass. The white chart should be attached
to the glass with its white side (not the peel off side) contacting the
glass.
•
For the gray chart, use the 9th grayscale from the top (white pat-
tern) of the GS-20 chart.
APPENDIX B. OPTICAL ADJUSTMENT (ELECTRICAL)
B-1
g404x517.wmf
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