Furuno CI-80 - Manual (Page 23)

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OPERATION
Basic Operating Procedure
Turning on the system
1. Turn on the transceiver unit.
2. Turn on the display unit.
3. Adjust brilliance of display.
The display unit conducts a check of the system, displaying the
results about 40 seconds after turning on the power.
Figure 20 Display unit and transceiver unit
Selecting operating mode
Press the MODE key to select operating mode among water
tracking, ground tracking, or automatic selection. Selected
mode appears at top right corner on the display.
N: Nav
Figure 21 Location of operating mode indication on echo
display