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 R142
1. Rotate R142 so that the line on it locates at the center position.
2. Set the SOUNDER MENU as below.
GAIN: 10, CLUTTER: 0
3. On the SOUNDER MENU, set E/S INT REJECT to ON.
3. Set GAIN to 0 on the SOUNDER MENU.
4. Adjust R142 so that noises disappear on the echo sounder display.
5. On the SOUNDER MENU, set the GAIN to 10, and then set the CLUTTER to 10.
6. Adjust R142 so that noises disappear on the echo sounder display.
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