Furuno NAVNET GD-1920C - Manual (Page 41)

2. RADAR OPERATION
2-12
1. If not displayed, press the HIDE/SHOW key to show the radar soft keys.
2. Press the SIGNAL PROC. soft key.
Shown when radar
source is the Model
18x4/19x4 series
radar. Not shown
otherwise.
SIGNAL
PROCESS
RETURN
359.9 ˚R
11.70
nm
+
I. REJ
OFF
E. AVG
OFF
E. STR
OFF
3/
H-UP
1nm
MP
319. 9
°
M
PULSE
MED
SIGNAL PROCESS soft keys
3. Press the I. REJ soft key successively to choose the interference rejection level desired;
LOW, MED, HIGH or OFF.
4. Press the RETURN soft key to finish.
The display shows IR L (Low), IR M (Medium) or IR H (High) when the interference rejector
is on.
2.15 Zoom
The zoom feature allows you to double the size of the area selected with the “zoom
square.” It is available on any range but is inoperative in true motion and when the display
is shifted.
2.15.1 Zooming radar targets
1. If not displayed, press the HIDE/SHOW key to show the radar soft keys.
2. Use the Trackball to set the cursor where you want to zoom.
3. Press the ZOOM & D. BOX soft key to show ZOOM & D. BOX soft keys.
4. Press the ZOOM ON/OFF soft key to select ON. A hollow square, called the “zoom
area,” appears on the display.
5. To release the cursor, press the CURSOR FLOAT soft key. (The hollow square changes
to a dashed one.) To relocate the zoom circle, select location with the Trackball, then
press the CURSOR LOCK key.
6. To quit the zoom function, press the ZOOM ON/OFF soft key to select OFF.