Furuno color video plotter GD1720C - Manual (Page 38)

2. RADAR OPERATION
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2.9 Presentation Mode
This unit provides four radar presentation modes: head-up, course-up, north-up and true
motion.
Heading data is required for modes other than head-up.
2.9.1 Selecting a presentation mode
1. If not displayed, press the HIDE/SHOW key to show the radar soft keys.
2. Press the RADAR DISPLY soft key to show the RADAR DISPLAY soft keys.
3. Press the MODE soft key. Each pressing of the key changes the presentation mode and
the presentation mode indication in the sequence of North-up, True Motion, Head-up,
and Course-up.
Function Indicator on display Soft key label
North-up N-UP NTH UP
True Motion TR-M TRUE M
Head-up H-UP HD UP
Course-up C-UP CSE UP
4. Press the RETURN soft key to finish.
Note:
When heading data is lost, the presentation mode automatically goes to head-up, the
heading indication at the screen top shows “- - -.- ° ” and the audio alarm sounds. Press the
ALARM key to acknowledge the alarm. The message “HEADING DATA MISSING” appears.
Restore compass signal to show heading indication. Use the CLEAR key presentation
mode if necessary. The audio alarm may be silenced with the CLEAR key.