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Adjustment Procedures
[A/D Pre-Amplification Circuit]
1. A/D Convertor
Measuring
---
instrument
Test point
---
EXT trigger
---
Measurement
---
range
Input signal
shown in the Table 1, 2
Input terminal
COMPUTER IN terminal
Model
SD200U
XD200U
Table 1
No.
Pattern
01
White 100%
Table 2
Adjustment purpose
To set amplitude of a video signal to be entered to A/D converter.
Symptom when
Incorrectly displayed white portions.
incorrectly adjusted
* Enter the adjustment command in capital alphanumeric letters.
1. Connect this PROJECTOR with a personal computer (with Microsoft
Windows
2. Start Microsoft
3. Start the communication program [Hyper Terminal] in Microsoft
95/98/Me to open the window. (For setting, refer to Hyper Terminal setting on
P.2)
RGB
4. Supply a signal (White 100%, No. 01).
5. Enter [00 ~ 5] (A/D adjustment command) to the Hyper Terminal window and
Signal
automatic adjustment will start.
SVGA
6. The return command [00 ~ 5111] is displayed on the Hyper Terminal Window
XGA
after the adjustment. The last 3 figures of the return command indicate the
result of adjustment and each figure corresponds to R, G, and B. in order. The
figure, 1 means that the adjustment has been successful. The figure, 0 means
that the adjustment has been failed caused by faults on PCBs, wrong signals or
wrong input selection.
95/98/Me Operating System). (Refer to the figure on P.1)
Windows
95/98/Me in the personal computer.
- 3 -
Windows
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