1
MODEL1824C/1834C/1934C/
1944C/1954C/1964C GD-1920C
Operator’s Guide
The purpose of this guide is to provide the basic operating procedures for this equipment. For
more detailed information, see the Operator’s Manual.
1: Opens/closes the alarm menu.
2: Clears data; erases selected mark.
3: Opens/closes the main menu.
4: Selects a range.
5: Enter alphanumeric data.
6: Radar: Displays the soft keys for
adjustment of gain, A/C SEA, A/C RAIN.
Sounder: Adjusts gain.
7: Press three seconds: Turns power off.
Momentary press: Turns the power on;
shows soft keys for adjustment of
brilliance and hue; shows RADAR STBY/
TX soft key.
8: Displays the mode selection window.
9: Momentary press:
Registers own ship’s position as a
waypoint.
Press three seconds:
Marks man overboard position.
10: Shows or hides the soft keys, function
keys, nav data.
11: Displays soft keys for EBL/VRM.
12: Soft keys
A: Trackball
Shifts EBL/VRM and cursor;
selects menu items and options.
B: ENTER knob
Push: Registers setting.
Rotate: Adjusts gain, VRM, EBL, etc.;
selects menu items and options. May
also be used to enter alphanumeric data.
C: Chart drive
Turning the Power On/Off
Turning on the power
Press the POWER/BRILL key momentarily.
Turning off the power
Press and hold down the POWER/BRILL
key until the screen goes off (approx. 3 sec.)
Selecting a Display
1. Press the DISP key to show the display
selection window.
2. Rotate the ENTER knob to select a basic
display screen, and then push it.
3. Rotate the ENTER knob to select a
combination display.
4. Push the ENTER knob.
EBL
VRM
GAIN
ABC
1
JKL
4
STU
7
DEF
2
MNO
5
VWX
8
_'#
0
GHI
3
PQR
6
YZ&
9
1
2
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