Furuno BACK GP-80 - Manual (Page 15)

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Note 1: When PDOP value exceeds 6 in the
3D mode, the position fixing method is
automatically changed to 2D.
Note 2: The "DEMO" icon appears when the
display is in the demonstration mode. To return
to normal mode, turn off the power and turn it
on while pressing and holding down the [NU/
CU ENT] key.
Note 3: Refer to page 10-2 about HDOP and
PDOP.
Turning the power off
Press the [POWER] key.
The next time you turn on the power the unit
starts up with the last used display mode.
1.3 Adjusting Display
Contrast and Brilliance
1) Press the [TONE] key. The display shown
in Figure 1-3 appears.
Figure 1-3 Screen for adjustment of display
contrast and brilliance
2) To adjust contrast, press t or s. Cur-
rent setting and setting range (0–31) are
shown to the right of "s".
3) To adjust brilliance, press ▲ or ▼. Cur-
rent setting and setting range (0–4) are
shown to the right of "▲".
Note: Operate cursor keys within 10 seconds
after pressing the [TONE] key. Otherwise, the
screen for adjustment of contrast and brilliance
will be cleared.
1.4 Selecting the Display
Mode
1) Press the [DISPLAY SEL] key. The dis-
play shown in Figure 1-4 appears.
* Shows currently selected geodetic chart
datum.
Figure 1-4 Screen for selection
of display mode
2) Press the [DISPLAY SEL] key, ▲ or ▼
to select display mode. (When the [DIS-
PLAY SEL] key is pressed, the display
mode changes in sequence shown below.)
Selected display mode appears about 15
seconds later.
Sample displays of each display mode are
shown in the figures on the next several pages.
Plotter 1 Plotter 2 Highway
Navigation Data
Tone:
Brilliance:
[–] [+]
MENU : Escape
8 (0~31)
4 (0~4)
Plotter 1
Plotter 2
Highway
Navigation
Data
Select Display
Plotter 1
MENU : Escape
: Select
(DATUM: WGS-84)*