3. ADJUSTMENT
3-9
3.6
Adjusting Echo Sounder Video
When using the E/S interface to connect an echo sounder, adjust the video signal with the
potentiometer R142 on the MAIN Board in the processor unit.
MAIN Board
10P6950
R142
Location of volume register R142
1. Rotate R142 so that the line on it locates at the center position.
2. Set the SOUNDER MENU as below to appear noises on the screen.
GAIN: 10, CLUTTER: 0
3. On the SOUNDER MENU, set E/S INT REJECT to ON.
4. Set GAIN to 0.
5. Adjust R142 so that noises disappear.
6. Return the GAIN setting to 10.
7. After setting GAIN to 10, set CLUTTER to 10.
8. Adjust R142 so that noises disappear.
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