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Furuno 1650DF Manuel D’Utilisation

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Observing the picture
1. Press the [POWER] key to turn on the display unit.
2. Press the [SNDR] key to select the sounder display.
3. Press the soft key labeled "MODE/FREQ" to display the follow-
ing message.
MODE/FREQ
   
▲
AUTO (CRUSING)
AUTO (FISHING)
MANUAL
   
▼
Figure 1-8 MODE FREQ selection screen
4. Select "MANUAL" by the arrow key.
5. Press the soft key labeled "RETURN".
6. Press the soft key labeled "GAIN" to display the following mes-
sage.
GAIN
  
▲
HIGH
LOW
  
▼
50
Figure 1-9 GAIN adjustment screen
7. Confirm that Gain is set at 50 (midpoint).
8. Press the soft key labeled "RETURN".
9. Press the soft key labeled "RANGE".
10. Select "15ft" by the [▲] key.
11. Note the depth to the seabed.