Furuno GD-1720C Manual

1
MODEL1724C/1734C
GD-1720C 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) Chooses a range.
(5) Displays the soft keys for EBL/VRM.
(6) Radar: Displays the soft keys for
adjustment of gain, A/C SEA, A/C RAIN
and FTC.
Sounder: Adjusts gain.
(7) Long press: Turns power off.
Momentary press: Turns power on.
Opens the display for adjustment of
brilliance, etc. For radar, switches STBY
and TX.
(8) Chooses a display mode.
(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 alternately.
(11) Soft keys
(A) Cursor pad
Chooses menu items and options;
shifts cursor. Press, release and press
again to change setting consecutively.
(B) ENTER knob
Push: Registers options on menus.
Rotate: Chooses character; adjusts
sensitivity (sounder, radar); chooses
menu items and options.
(C) Chart slot
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 open the display
selection window.
2. Rotate the ENTER knob to choose a
basic display screen, and then push it.
3. Rotate the ENTER knob to choose a
combination display.
4. Push the ENTER knob.
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2
3
4
5
6
7
8
9
11
A
B
C
10
VX
2

2
Transmitting, Stand-by
1. Press the POWER/BRILL key
momentarily to show soft keys.
2. Press the RADAR STBY soft key to
highlight TX on its label.
3. Press the RETURN soft key.
To return to Stand-by mode, press the
RADARTXsoftkeytohighlightSTBYonits
label.
Selecting the Range Scale
Press the RANGE (+ or -) key to change the
range scale.
Adjusting the Gain
1. Press the GAIN key.
2. Press the GAIN soft key.
3. Press the cursor pad to select AUTO
ROUGH, AUTO MODERATE, AUTO
CALM or MAN (manual) as appropriate.
For manual adjustment, rotate the
ENTER knob to adjust, while observing
the radar echo.
4. Press the GAIN key or the RETURN soft
key to finish.
Adjusting the A/C SEA, RAIN
1. Press the GAIN key followed by A/C
SEA or A/C RAIN soft key to open the
appropriate setting window.
2. For A/C SEA, rotate the ENTER knob to
choose the appropriate setting. When
choosing MAN, rotate the ENTER knob
to adjust to suppress sea clutter.
3. For A/C RAIN, rotate the ENTER knob to
adjust.
4. Press the GAIN key or RETURN soft key
to finish.
Measuring the Range by VRM
1. Press the EBL/VRM key followed by
VRM1 ON (dotted ring) or VRM2 ON
(dashed ring) soft key to open the appro-
priate VRM.
2. Rotate the ENTER knob to place the
VRM on the inside edge of a radar
target, and read the VRM indication to
find range.
To erase a VRM, press appropriate VRM
soft key followed by the CLEAR key.
Measuring the Bearing
1. Press the EBL/VRM key followed by
EBL1 ON (dotted line) or EBL2 ON
(dashed line) soft key to open the appro-
priate EBL.
2. Rotate the ENTER knob to bisect the
radar target with the EBL, and read the
EBL indication to find bearing.
To erase an EBL, press appropriate EBL
soft key followed by the CLEAR key.
(1) EBL1 (Dotted line)
(2) EBL2 (Dashed line)
(3) VRM1 (Dotted ring)
(4) VRM2 (Dashed ring)
(5) EBL bearing
(6) VRM range
(7) Active marker is highlighted.
GAIN SENSITIVITY
~AUTO ROUGH
{AUTO MODERATE
{AUTO CALM
{MAN 0
A/C SEA
0
A/C RAIN
0
A/C SEA window A/C RAIN window
AUTO ROUGH
AUTO MODERATE
AUTO CALM
MAN
3
4
5
67
.250/ 319.9
°
M
.125nm
SP
H-UP
+
359.9 ° R
0.240nm
EBL
VRM
EBL1
ON
EBL1
334.3°R
VRM1
0.119nm
EBL2
236.5°R
VRM2
0.242nm
VRM1
ON
OFFSET
EBL2
ON
VRM2
ON
1
2
<RADAR Operation>

3
Changing Chart Scale
Press the RANGE - key (shrinks the scale,
and expands image) or RANGE + key
(expands the scale, and shrinks image).
Entering a Mark
1. Place the cursor where you want a mark
to appear.
2. Press the MARK ENTRY soft key.
Entering a Waypoint at Own
Ship Position
Press the SAVE/MOB key momentarily to
store your position as a waypoint.
Entering a Waypoint with
Cursor
1. Press the MENU key,
WAYPOINTS/ROUTES, WAYPOINTS
and WAYPOINT BY CURSOR soft keys
in order to open the plotter display.
2. Press the cursor pad to place the cur-
sor where you want to enter a waypoint.
3. Press the NEW WAYPOINT soft key.
4. Press the SAVE soft key.
Creating a Route
1. Press the MENU key,
WAYPOINTS/ROUTES, ROUTES soft
keys in order to open the ROUTE menu.
2. Press the NEW ROUTE soft key to open
the new route entry screen.
3. Press the LOCAL LIST or ALPHA LIST
soft key to open the waypoint list.
4. Press the cursor pad to select a way-
point, then press the ADD WPT soft key.
5. Repeat step 4 to complete the route.
6. Press the SAVE soft key to register the
route, and then press the MENU key.
Navigating to Waypoints
1. Press the cursor pad to choose a
waypoint on the plotter display.
2. Press the GO TO WPT soft key.
Setting Arrival Alarm
1. Press the ALARM key.
2. Choose ARRIVAL ALARM.
3. Press the EDIT soft key to open the
arrival alarm window.
4. Press the cursor pad to choose ON.
5. Enter alarm range, and then press the
ENTER soft key or ENTER knob to
register setting.
6. Press the ALARM key to finish.
NEW
WPT
SELECT
MARK
COORD
TYPE
N < - -> S
E < - -> W
SAVE
RETURN
▲
34°44.000'N
135°21.000'W 359.9° 0.00nm
002WPT
00:00 01JAN00
34°44.000'N
135°21.000'W 359.9° 0.00nm
003WPT
00:00 01JAN00
34°44.000'N
135°21.000'W 359.9° 0.00nm
COMMENT
02:36 01JAN01
POSITION
LAT
34°12. 134'N
LON
134°12. 345'W
PROXIMITY ALARM RADIUS
0. 00nm
MARK 001WPT NAME
ROUTE NAME
COMMENT
00 1
NEW
ROUTE
PLOT
LOCAL
LIST
ALPHA
LIST
CONECT
CANCEL
ARRIVAL ALARM
▲
{ON 0.010km
~OFF
▼
<PLOTTER Operation>

4
(1) Soft keys
(2) Display mode
(3) Depth scale
(4) Elapsed time
(5) Variable Range Marker (white)
(6) Minute marker
(7) Zero line
(8) Icons (alarm, battery, simulation)
(9) Color bar
(10) Tempelature scale (orange)
(11) Water temperature graph
(12) Depth
(13) Tx frequency
(14) Bottom echo
(15) Fish echo
(16) Cross-hair cursor
Selecting a sounder mode
1. Press the DISPLY MODE soft key to
open the display mode window.
2. Press the cursor pad or ENTER knob to
choose a display.
3. Press the RETURN soft key to close the
window.
Automatic Sounder Operation
1. Press the AUTO/D.BOX soft key.
2. Press the cursor pad or ENTER knob to
choose CRUISING or FISHING.
3. Press the RETURN soft key.
Manual Sounder Operation
1. Press the AUTO/D.BOX soft key.
2. Choose OFF (MANUAL), and then press
the RETURN soft key.
Adjusting the gain
Press the GAIN key, and then rotate the
ENTER knob or press the cursor pad to ad-
just the gain.
Shifting the basic range
Press the SHIFT soft key, and then rotate
the ENTER knob to adjsut the shift range.
Reducing Low Level Noise
1. Press the MENU key and SOUNDER
MENU soft key in order.
2. Choose CLUTTER, then press the EDIT
soft key to open the clutter window.
3. Press the cursor pad upward or
download.
4. Press the RETURN soft key followed by
the MENU key to close the menu.
Picture Advance Speed
1. Press the MENU key and SOUNDER
MENU soft key in order.
2. Choose PICTURE ADVANCE, and then
press the EDIT soft key to open the
picture advance window.
3. Press the cursor pad to choose speed
desired.
4. Press the RETURN soft key followed by
the MENU key to close the menu.
Activating Sounder Alarms
1. Press the ALARM key to open the
ALARM menu.
2. Press the cursor pad to choose the
alarm among BOTTOM, TEMPERA-
TURE, FISH and FISH (B/L).
3. Press the EDIT soft key.
4. Choose ON (for TEMPERATURE,
WITHIN RANGE or OUT OF RANGE),
and then key in the alarm range.
5. Press the ENTER soft key (or ENTER
key) followed by the ALARM key to
close the menu.
This manual is printed with
soy ink.
<SOUNDER Operation>
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133
52
LF
SHIFT
AUTO/
D. BOX
DISPLY
MODE
FREQ
LF /HF
50
30
F
40
SOUNDER
SINGLE
0
50
100
150
200
0'30"
S
I
M
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PUB. NO. OSE-35550-A
(
0503, HIMA) MODEL 1724C SERIE
S