Instrukcja obsługi Furuno 1722C

Furuno Radar statku 1722C

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MARINE RADAR
MODEL1722/1732/1742/1762
MODEL1722C/1732C/1742C/1762C
C
9-52, Ashihara-cho,
Nishinomiya, Japan
Telephone: 0798-65-2111
Telefax: 0798-65-4200
Your Local Agent/Dealer
All ri
g
hts reserved.
PUB. No. OME-34940
MODEL1722/C SERIES
(
DAMI
)
FIRST EDITION : APR. 2001
D : OCT. 11, 2001
Printed in Japan
i
SAFETY INSTRUCTIONS
WARNING
Do not disassemble or modify the
equipment.
Fire, electrical shock or serious injury can
result.
Immediately turn off the power at the
switchboard if the equipment is emitting
smoke or fire.
Continued use of the equipment can cause
fire or electrical shock. Contact a FURUNO
agent for service.
Keep heater away from equipment.
A heater can melt the equipment's power
cord, which can cause fire or electrical
shock.
Use the proper fuse.
Fuse rating is shown on the equipment.
Use of a wrong fuse can result in damage
to the equipment.
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel
should work inside the
equipment.
CAUTION
A warning label is attached to the equip-
ment. Do not remove the label. If the
label is missing or damaged, contact
a FURUNO agent or dealer about
replacement.
WARNING
To avoid electrical shock, do not
remove cover. No user-serviceable
parts inside.
Name: Warning Label (1)
Type: 86-003-1011-0
Code No.: 100-236-230
WARNING
Radio Frequency
Radiation Hazard
The radar antenna emits electromagnetic
radio frequency (RF) energy which can be
harmful, particularly to your eyes. Never
look directly into the antenna aperture from
a close distance while the radar is in
operation or expose yourself to the trans-
mitting antenna at a close distance.
Distances at which RF radiation levels of
100 and 10 W/m
2
exist are given in the
table below.
Note: If the antenna unit is installed at a
close distance in front of the wheel house,
your administration may require halt of
transmission within a certain sector of
antenna revolution. This is possible - Ask
your FURUNO representative or dealer to
provide this feature.
MODEL Distance to
100 W/m2
point
Distance to
10 W/m2
point
1722 Nil Worst case
0.50 m
1732
1742
1762 0.20 m
Nil Worst case
0.50 m
Nil Worst case
1.00 m
Worst case
3.00 m
No one navigation device should ever be
solely replied upon for the navigation of
a vessel.
Always confirm position against all available
aids to navigation, for safety of vessel and
crew.
CAUTION
ii
TABLE OF CONTENTS
TABLE OF CONTENTS ........................................................................................ii
FOREWORD.......................................................................................................viii
SYSTEM CONFIGURATIONS...............................................................................x
1. OPERATIONAL OVERVIEW.........................................................................1-1
1.1 Operating Controls ....................................................................................................1-2
1.1.1 Display unit controls........................................................................................1-2
1.1.2 Remote controller............................................................................................1-5
1.2 Inserting a Chart Card...............................................................................................1-6
1.3 Turning the Unit On/Off..............................................................................................1-7
1.4 Cursor Pad, Cursor....................................................................................................1-8
1.5 Display Brilliance, Panel Brilliance, Contrast, Hue.....................................................1-9
1.5.1 Display brilliance, panel brilliance....................................................................1-9
1.5.2 Contrast........................................................................................................1-10
1.5.3 Hue (MODEL1722C series)...........................................................................1-10
1.6 Selecting a Display.................................................................................................. 1-11
1.6.1 Display modes .............................................................................................. 1-11
1.6.2 Selecting a display........................................................................................ 1-12
1.6.3 Switching control in combination and overlay screens...................................1-13
1.6.4 Selecting radar source..................................................................................1-14
1.7 Data Boxes.............................................................................................................. 1-15
1.7.1 Showing, hiding data boxes with soft key......................................................1-15
1.7.2 Rearranging data boxes................................................................................1-15
1.7.3 Temporarily erasing a data box .....................................................................1-15
1.8 Function Keys..........................................................................................................1-16
1.8.1 Executing a function......................................................................................1-16
1.9 Simulation Display...................................................................................................1-17
2. RADAR OPERATION....................................................................................2-1
2.1 Radar Display............................................................................................................2-1
2.2 Transmitting, Stand-by...............................................................................................2-2
2.3 Tuning .......................................................................................................................2-2
2.4 Adjusting the Gain.....................................................................................................2-2
2.5 Reducing Sea Clutter.................................................................................................2-4
2.5.1 How the A/C SEA works..................................................................................2-4
2.5.2 Adjusting A/C SEA ..........................................................................................2-4
2.6 Reducing Precipitation Clutter ...................................................................................2-5
2.6.1 Adjusting the A/C RAIN...................................................................................2-5
2.6.2 Adjusting the FTC ...........................................................................................2-6
2.7 Range Scale..............................................................................................................2-7
2.8 Pulselength................................................................................................................2-8
iv
2.25 ARP (option), TTM operation...................................................................................2-34
2.25.1 Activating/deactivating ARP, TTM..................................................................2-35
2.25.2 Acquiring and tracking targets (ARP only).....................................................2-36
2.25.3 Displaying target number (internal, external ARP).........................................2-37
2.25.4 Terminating tracking of ARP targets ..............................................................2-38
2.25.5 Setting vector attributes (ARP)......................................................................2-39
2.25.6 Displaying past position display (ARP)..........................................................2-40
2.25.7 ARP, TTM target data....................................................................................2-41
2.25.8 CPA/TCPA alarm (ARP) ................................................................................2-42
2.25.9 Lost target alarm (ARP).................................................................................2-43
2.26 Interpreting the Radar Display.................................................................................2-44
2.26.1 General.........................................................................................................2-44
2.26.2 False echoes................................................................................................. 2-46
2.26.3 SART (Search and Rescue Transponder).....................................................2-48
2.26.4 Racon (Radar Beacon)..................................................................................2-50
3. PLOTTER OPERATION ................................................................................3-1
3.1 Plotter Displays..........................................................................................................3-1
3.1.1 Full-screen plotter display ...............................................................................3-1
3.1.2 Compass display.............................................................................................3-3
3.1.3 Highway display..............................................................................................3-5
3.1.4 Nav data display..............................................................................................3-6
3.2 Presentation Mode ....................................................................................................3-7
3.2.1 North-up..........................................................................................................3-7
3.2.2 Course-up.......................................................................................................3-8
3.2.3 Auto course-up................................................................................................3-8
3.3 Shifting the Display....................................................................................................3-9
3.4 Chart Scale................................................................................................................3-9
3.5 Chart Cards.............................................................................................................3-10
3.5.1 Chart card overview......................................................................................3-10
3.5.2 Indices and chart enlargement...................................................................... 3-11
3.5.3 FURUNO and NavCharts™..........................................................................3-12
3.5.4 C-MAP cards................................................................................................. 3-14
3.6 Working with Track .................................................................................................. 3-18
3.6.1 Displaying track.............................................................................................3-18
3.6.2 Stopping, restarting plotting of own ship track ...............................................3-19
3.6.3 Changing track color (MODEL1722C series).................................................3-20
3.6.4 Track plotting method and interval for own ship track....................................3-21
3.6.5 Changing own ship track/mark distribution setting.........................................3-22
3.6.6 Erasing track.................................................................................................3-23
3.7 Marks, Lines............................................................................................................ 3-25
3.7.1 Entering a mark.............................................................................................3-25
3.7.2 Changing mark attributes..............................................................................3-25
3.7.3 Selecting line type.........................................................................................3-26
3.7.4 Erasing marks, lines...................................................................................... 3-27
3.8 Waypoints................................................................................................................3-29
3.8.1 Entering waypoints........................................................................................ 3-29
3.8.2 Editing waypoint data....................................................................................3-32
v
3.8.3 Erasing waypoints .........................................................................................3-34
3.8.4 Changing waypoint mark size (FURUNO, NavCharts™) ...............................3-35
3.8.5 Searching waypoints......................................................................................3-36
3.9 Routes.....................................................................................................................3-37
3.9.1 Creating routes..............................................................................................3-37
3.9.2 Connecting routes .........................................................................................3-41
3.9.3 Inserting waypoints........................................................................................3-42
3.9.4 Removing waypoints from a route..................................................................3-44
3.9.5 Erasing routes...............................................................................................3-44
3.10 Navigation................................................................................................................3-45
3.10.1 Navigating to a “quick point” ..........................................................................3-45
3.10.2 Navigating to waypoints.................................................................................3-46
3.10.3 Navigating to ports, port services (NavCharts™ only) ...................................3-47
3.10.4 Following a route...........................................................................................3-49
3.11 Alarms .....................................................................................................................3-53
3.11.1 Audio alarm on/off .........................................................................................3-53
3.11.2 Arrival alarm..................................................................................................3-54
3.11.3 Anchor watch alarm.......................................................................................3-55
3.11.4 XTE (Cross Track Error) alarm ......................................................................3-56
3.11.5 Speed alarm..................................................................................................3-56
3.11.6 Proximity alarm..............................................................................................3-57
3.11.7 Trip alarm ......................................................................................................3-58
3.11.8 Alarm information ..........................................................................................3-59
3.12 Resetting Trip Distance............................................................................................3-60
3.13 Entering the MOB Mark, Setting MOB as Destination ..............................................3-61
4. VIDEO SOUNDER OPERATION...................................................................4-1
4.1 Principle of Operation.................................................................................................4-1
4.2 Sounder Displays.......................................................................................................4-2
4.2.1 Selecting a sounder display.............................................................................4-2
4.2.2 Description of sounder displays.......................................................................4-3
4.2.3 Selecting screen split method in combination displays.....................................4-7
4.3 Automatic Sounder Operation....................................................................................4-8
4.3.1 How the automatic sounder works...................................................................4-8
4.3.2 Types of automatic sounder modes.................................................................4-8
4.3.3 How to enable automatic sounder operation....................................................4-8
4.4 Manual Sounder Operation........................................................................................4-9
4.4.1 Selecting the manual mode .............................................................................4-9
4.4.2 Selecting display range....................................................................................4-9
4.4.3 Adjusting the gain............................................................................................4-9
4.4.4 Range shifting................................................................................................4-10
4.5 Measuring Depth, Time............................................................................................4-11
4.6 Reducing Interference..............................................................................................4-12
4.7 Reducing Low Level Noise.......................................................................................4-13
4.8 Erasing Weak Echoes..............................................................................................4-14
4.9 White Marker (MODEL1722C series).......................................................................4-15
vii
6. DATA TRANSFER.........................................................................................6-1
6.1 Memory Card Operations...........................................................................................6-1
6.1.1 Formatting memory cards................................................................................6-1
6.1.2 Saving data to a memory card.........................................................................6-2
6.1.3 Playing back data from a memory card ...........................................................6-4
6.2 Uploading, Downloading Data ...................................................................................6-5
6.2.1 Setting communication software on the PC.....................................................6-5
6.2.2 Uploading or downloading data.......................................................................6-5
6.3 Loading Waypoint Data from Yeoman........................................................................6-8
6.4 Receiving Data Via Network Equipment ....................................................................6-9
6.5 Outputting Data Through the Network......................................................................6-10
7. MAINTENANCE, TROUBLESHOOTING......................................................7-1
7.1 Preventive Maintenance ............................................................................................7-1
7.2 Replacement of Fuse.................................................................................................7-2
7.3 Replacement of Battery.............................................................................................7-2
7.4 Simple Troubleshooting.............................................................................................7-3
7.4.1 General...........................................................................................................7-3
7.4.2 Radar..............................................................................................................7-4
7.4.3 Plotter..............................................................................................................7-5
7.4.4 Sounder ..........................................................................................................7-6
7.5 Diagnostics................................................................................................................7-7
7.5.1 Memory I/O test...............................................................................................7-7
7.5.2 Test pattern...................................................................................................7-10
7.5.3 Keyboard, remote controller test.................................................................... 7-11
7.6 GPS Status Display.................................................................................................7-12
7.7 Clearing Memories...................................................................................................7-13
7.8 Error Messages.......................................................................................................7-14
APPENDIX ......................................................................................................AP-1
Menu Overview............................................................................................................... AP-1
Geodetic Chart List....................................................................................................... AP-12
World Time Chart.......................................................................................................... AP-13
Icons............................................................................................................................. AP-14
SPECIFICATIONS...........................................................................................SP-1
INDEX............................................................................................................... IN-1
DECLARATION OF CONFORMITY
viii
FOREWORD
A Word to the Owner of the MODEL1722/1722C Series
Marine Radar
FURUNO Electric Company thanks you for purchasing the MODEL1722/1722C
Series Marine Radar. We are confident you will discover why the FURUNO
name has become synonymous with quality and reliability.
For over 50 years FURUNO Electric Company has enjoyed an enviable
reputation for quality and reliability throughout the world. This dedication to
excellence is furthered by our extensive global network of agents and dealers.
Your radar is designed and constructed to meet the rigorous demands of the
marine environment. However, no machine can perform its intended function
unless properly installed and maintained. Please carefully read and follow the
operation and maintenance procedures set forth in this manual.
We would appreciate feedback from you, the end-user, about whether we are
achieving our purposes.
Thank you for considering and purchasing FURUNO.
x
SYSTEM CONFIGURATIONS
All NavNet products incorporate a “network circuit board” to integrate each
NavNet product on board through an optional LAN cable (Ethernet 10BASE-T).
Each NavNet product is assigned an IP address to enable transfer of images
between other NavNet products. For example, video plotter pictures can be
transferred to a radar and vice versa. Pictures received via the NavNet may be
adjusted at the receiving end.
A NavNet system may consist of up to four display units and one ETR. For a
system incorporating three or more products, a “hub” is required to process data.
Single unit NavNet system
Antenna Unit
(ex. MODEL 1722/1722C)
Network sounder
ETR-6/10N
Heading
sensor
External buzzer
PC
Echo sounder
E/S
Navigator
GPS receiver
GP-310B
12-24 VDC
Other NavNet unit
(GD-1700 etc.)
Rectifier*
PR-62
RU-3423
Ship's mains
100/110/220/230 VAC
1φ, 50/60 Hz
*PR-62: MODEL1722/1722C/1732/1732C
RU-3423: MODEL1742/1742C/1762/1762C
Display Unit
RDP-130 (monochrome)
RDP-131 (color)
Remote
Controller
RMC-100
Single-unit NavNet system
xi
Two-unit NavNet system
Antenna Unit GP-310B
Radar data
Plotter data
Two-unit NavNet system
Three-or more unit NavNet system (Max. 4 NavNet capable display units)
Antenna Unit GP-310B
HUB
Network sounder
ETR-6/10N
Sounder data
Radar data Plotter data
Note: The picture disappears
10 seconds after the NavNet
cable is disconnected from a
"sub" NavNet display unit.
Three-or more unit NavNet system
1. OPERATIONAL OVERVIEW
1-2
1.1 Operating Controls
1.1.1 Display unit controls
Overview of display unit controls
The radar systems are mainly operated with controls of the display unit (and
remote controller). Ten keys are labeled and they provide the function shown on
their labels. The five soft keys provide various functions according to current
operating mode. The [ENTER] knob mainly functions to register selections on
the menu and enter alphanumeric data. The cursor pad’s main function is to
move the cursor across the screen. Whenever you operate a key, a single beep
confirms operation. Invalid operation causes the unit to emit three beeps.
Cursor pad
Selects menu items and options;
shifts cursor. Press, release and
press again to change setting
consecutively.
Selects display mode.
Soft keys
Momentary press:
Registers own ship’s
position as a waypoint.
Press three seconds:
Marks man overboard
position.
Opens/closes the main menu.
Displays the soft keys for EBL/VRM.
Radar: Displays the soft keys for adjustment of
gain, A/C SEA, A/C RAIN and FTC.
Sounder: Adjusts gain.
Long press: Turns power on/off.
Momentary press: Opens the
display for adjustment of brilliance,
etc. For radar, switches STBY and TX.
ENTER knob
Push: Registers options on menus.
Rotate: Selects character; adjusts sensitivity
(sounder, radar); chooses menu items and options.
Clears data; erases selected mark.
Opens/closes the alarm menu.
Shows or hides the soft
keys, function keys,
nav data alternately.
Chart slot
Selects a range.
Control panel
1. OPERATIONAL OVERVIEW
1-3
Soft keys
The five soft keys’ functions change according to the operation. Their labels for
their current functions are shown on the screen to the left of the keys. To hide or
show the soft keys, press the [HIDE/SHOW] key. Each press of the key shows
preset soft keys, user function keys or turns off navigation information (at the top
of the screen).
SOFT
KEYS
Display unit
Some soft keys show the current state of the soft key function in reverse video
as shown below.
.250/ 319.9
°
M
.125nm
SP
H-UP
SIGNAL
PROCESS
+
359.9
°
R
0.24nm
RETURN
E. AVG*
OFF
I. REJ
LOW
PULSE
SHORT
E. STR
LOW
Current option
shown in reverse
video
*: Only when MODEL 1833/C series are
used as radar source.
Plotter display
1. OPERATIONAL OVERVIEW
1-6
1.2 Inserting a Chart Card
Your unit reads FURUNO and Nav-Charts™ (NAVIONICS), or C-MAP chart
cards, depending on its specifications. Insert the appropriate chart card for your
area as follows:
1. Open the chart card slot lid.
Chart slot
Display unit
2. Insert desired chart card groove side up.
3. Close the lid to protect the chart drive.
Note 1: Do not insert or remove the chart card while turning power on. This may
cause the equipment to freeze.
Note 2: Do not remove a card while the chart is being drawn. This may cause
the equipment to freeze.
Note 3: A card remover is supplied to ease removal of chart cards. Attach the
card remover to the right-hand side hole on the card and pull to remove
card. You can leave the card remover attached to the card while the
card is in the card slot - push the card remover leftward until it contacts
the recessed area in the card.
Note 4: For multiple display units, do not use the same chart card type in more
than one display unit.
Chart card and card remover
1. OPERATIONAL OVERVIEW
1-7
1.3 Turning the Unit On/Off
Press the [POWER/BRILL] key to turn the unit on. A beep sounds and the
equipment proceeds in the sequence shown below, displaying the product
information screen, startup test results and the chart usage disclaimer, in that
order. The startup test checks the ROM, RAM, internal battery and backup data
for proper operation, displaying the results for each as OK or NG (No Good). If
NG appears, an appropriate message appears on the screen. For any NG, try to
press any key to go to the chart disclaimer screen, then perform the diagnostic
test referring to the paragraph “7.6 Diagnostics.”
RADAR PLOTTER
STATION NAME:
RADAR
FURUNO ELECTRIC CO., LTD.
CHARTS AVAILABLE
FLYBRDG = ANB01004
RADAR = ANB01003
STARTUP TEST
ROM OK
RAM OK
INTERNAL BATTERY OK
BACKUP DATA OK
NO NATIONAL HYDROGRAPHIC
OFFICE HAS VERIFIED THE
INFORMATION IN THIS
COASTLINE DATA CARD AND NONE
ACCEPT LIABILITY FOR THE
ACCURACY OF REPRODUCTION OR
ANY MODIFICATIONS MADE
THEREAFTER. THIS PRODUCT WITH
THIS COASTLINE DATA CARD
DOES NOT REPLACE THE
REQUIREMENT TO USE THE
APPROPRIATE PRODUCTS FOR
NAVIGATION ACCORDING TO
NATIONAL AND INTERNATIONAL
REGULATIONS.
Product information Startup test Chart disclaimer
PROGRAM No. 03591730**
Host Name
Chart List
** = Program version no.
(Two program version numbers.
One for NAVIO and one for C-MAP.)
The magnetron in the antenna unit takes about one minutes and thirty seconds
to warm up before the radar can be operated. The time remaining for warm up of
the magnetron appears at the center of the display, counting down from 1:30 to
0:01.
You may press any key at the chart disclaimer screen to show the last-used
display, or wait several seconds to let the equipment do it for you.
To turn the unit off, press and hold down the [POWER/BRILL] key until the
screen goes dark (approx. 3 sec.). To protect the LCD attach the hard cover.
Note that the network sounder will be turned off approx. three minutes after
turning off the power.
Note: You are asked if you want to start the simulation mode, which provides
simulated operation of the equipment, the first time you turn on the power
(or any time power is applied after a memory reset) the message shown
below is displayed. Push the [ENTER] knob to start the simulation mode,
or press the [CLEAR] key to start normal operation. For further details
about the simulation mode, see the paragraph “1.8 Simulation Display.”
START
SIMULATION MODE?
YES ... PUSH ENTER KNOB
NO ... PUSH CLEAR KEY
TO SKIP.
1. OPERATIONAL OVERVIEW
1-8
1.4 Cursor Pad, Cursor
The cursor pad mainly functions to shift the cursor, for measurement of range
and bearing to a location (radar) and latitude and longitude position (plotter).
Operate the cursor pad to shift the cursor. The cursor moves in the direction of
the arrow or diagonal pressed, on the cursor pad.
For the plotter display, the cursor can be turned off with the CENTER soft key.
This also returns own ship marker to the screen center.
34° 22. 3456'N 272.4°M TRIP NU
080° 22. 3456'E
15.9 nm 99.9 nm
GOTO
CURSOR
MODE
NTH UP
CENTER
MARK
ENTRY
+
Cursor data
L/L position,
Range and
bearing from
own ship to
cursor
Cursor
16.0nm
D. BOX
ON/ OFF
Cursor
Radar display Plotter display
.250/ 319.9
°M
.125nm
SP
H-UP
+
359.9
°
R
0.24nm
RADAR
DISPLY
NAV
FUNC
ZOOM &
D. BOX
SIGNAL
PROC
TARGET
Cursor, cursor data
1. OPERATIONAL OVERVIEW
1-9
1.5 Display Brilliance, Panel Brilliance, Contrast,
Hue
You can adjust display brilliance, panel brilliance, contrast and hue
(MODEL1722C series only) as shown below.
1.5.1 Display brilliance, panel brilliance
1. Press the [POWER/BRILL] key momentarily. A set of soft keys for
adjustment of brilliance, contrast and hue (MODEL1722C series only) appear.
The last-used adjustment window appears. In the example below the display
brilliance adjustment window is shown.
.250/ 319.9
°
M
.125nm
SP
H-UP
.250/ 319.9
°
M
.125nm
SP
H-UP
MODEL1722C series MODEL1722 series
PANEL
BRILL
CONTST
/HUE
RETURN
DISPLAY BRILLIANCE
8
PANEL
BRILL
CONTST
BRILL
CONTST
RETURN
DISPLAY BRILLIANCE
8
Current selection is higtlighted.
DISPLY
BRILL DISPLY
BRILL
RADAR
STBY RADAR
STBY
BRILL
CONTST
Brilliance adjustment soft keys
2. Press the DISPLY BRILL or PANEL BRILL soft key as appropriate. An
adjustment window appears at the bottom of the screen. This window shows
the name of the item selected for adjustment plus current brilliance level, by
bar graph.
DISPLAY BRILLIANCE
8
PANEL BRILLIANCE
8
Display brilliance Panel brilliance
Display brilliance and panel brilliance windows
3. Adjust the [ENTER] knob, clockwise to raise the setting or counterclockwise
to decrease it. You may also use the soft key pressed at step 2, in which
case the item selected is adjusted cyclically, from low to high. Eight levels of
display brilliance and panel brilliance are available.
4. Hit the RETURN soft key to finish.
The display brilliance can be adjusted by pressing the [POWER/BRILL] key.
If the unit is turned on with minimum display brilliance, press the
[POWER/BRILL] key consecutively to adjust the brilliance.
1. OPERATIONAL OVERVIEW
1-10
1.5.2 Contrast
1. Press the [POWER/BRILL] key momentarily.
2. Press the CONTST (monochrome) or CONTST/HUE (color) soft key.
3. For MODEL1722C series, two soft keys appear at the pressing of the
CONTST/HUE soft key: CONTST and HUE. Press the CONTST soft key to
adjust the contrast.
CONTRAST
8
Contrast window
4. Adjust the [ENTER] knob, clockwise to raise the setting or counterclockwise
to decrease it. You may also use the CONTST soft key, in which case the
item selected is adjusted cyclically, from low to high. 16 levels (monochrome)
and 10 levels (color) of contrast are available.
5. Press the RETURN soft key to finish.
1.5.3 Hue (MODEL1722C series)
1. Press the [POWER/BRILL] key momentary.
2. Press the CONTST/HUE soft key.
3. Press the HUE soft key to show the hue setting window.
HUE
▲ DAY
NIGHT
TWILIGHT
MANUAL SET
▼
Hue window
4. Operate the cursor pad or [ENTER] knob to select hue desired, referring to
the table below. MANUAL SET follows the color settings on the RADAR
DISPLAY SETUP for the radar, CHART DETAILS menu for the plotter and
SOUNDER MENU for the sounder.
Day Night Twilight Applicable mode
Characters Black Red Green Plotter, radar, sounder
Radar ring Green* Red Green* Radar
Radar echo Orange Red Yellow Radar
Background White Black Blue Plotter, radar
Landmass Yellow Light Yellow Dim Yellow Radar
*: Red on C-map
5. Hit the RETURN soft key to finish.
Note: When using the overlay screen, the own ship track will be hidden if the
radar background and own ship track are blue and the “MANUAL” hue
setting is used. In this case, set HUE to other position and then return to
“MANUAL” to show the own ship track in black.
1. OPERATIONAL OVERVIEW
1-11
1.6 Selecting a Display
1.6.1 Display modes
If you have a navigator and network sounder connected, four full-screen displays
are available: radar, plotter, and video sounder and navigation data.
(MODEL1722C series have five screens, those mentioned above plus the
overlay screen.) In addition to the full-screen display, you can divide the screen
into half-screen combination displays to show two sets of images (data).
Full screen
(Ex. radar) Combination screen
(Ex. radar + sounder) Overlay screen
(Radar and plotter,
color model only.
Requires L/L data)
Display screens
The table below shows the displays available with each screen type.
Screen type and available display screen
Full screen Combination screen
options Overlay screen options
(Color series only)
Radar, plotter, sounder,
nav data Radar, plotter, echo
sounder, compass,
highway,
compass/highway, nav
data, overlay
Radar + plotter
1. OPERATIONAL OVERVIEW
1-12
1.6.2 Selecting a display
1. Press the [DISP] key to show the full-screen selection window. The icons of
modes not available are marked with “X” mark. PAGE1-PAGE5 are
user-arrangeable displays called “hot pages,” which you can configure as you
like. For further details, see “5.5 Hot Page Setup.”
PAGE1 PAGE2 PAGE3 PAGE4 PAGE5
RADAR PLOT SNDR NAV OVRLY
· TURN KNOB TO SELECT MODE
AND PUSH KNOB TO ENTER.
· PUSH ANY SOFT KEY TO
SELECT IMAGE SOURCE.
Basic display
screens
Hot pages
Full-screen selection window (“overlay” for color model)
2. Rotate the [ENTER] knob to select a basic display screen or a hot page
screen.
3. Push the [ENTER] knob. If you selected a basic display screen, a set of
combination display screens corresponding to the basic display screen that
was selected appear. In the example below, radar combination displays are
shown.
PUSH ENTER KNOB.
Radar combination screen selection window
4. Operate the [ENTER] knob to select the combination screen display desired
and push it to set.
1. OPERATIONAL OVERVIEW
1-14
1.6.4 Selecting radar source
When other network radar is connected to the equipment, you may select an
image source as shown below. This is not necessary when no other network
radar is connected. Select one host name for the source though there are two or
three radar units on the net.
Note: Turn the power off whenever changing the source.
1. Press the [DISP] key.
2. Press any soft key to show the following display.
RADAR SOURCE
RADAR - - -
SOUNDER SOURCE*
SOUNDER-
IP ADDRESS
172.031.003.001
HOST NAME
RADAR - - -
▲
SELECT
SOURCE
EDIT
RETURN
IF THERE IS MORE THAN
ONE NETWORK RADAR OR
ECHO SOUNDER, YOU MAY
SELECT THE IMAGE
SOURCES FOR DISPLAY.
*: Do not change this setting.
Select source menu
3. Use the cursor pad to select RADAR SOURCE and press the EDIT key.
RADAR SOURCE
RADAR - - -
Radar source
Radar source and sounder source windows
4. Use the cursor pad and [ENTER] knob to enter source host name: ◄ or ► to
select position and rotate the [ENTER] knob to select character.
5. Press the [ENTER] soft key or [ENTER] knob.
6. Confirm that the correct host name is entered.
7. Press the [DISP] key to finish.
8. Turn the power off and on again.
Note: Sources names are determined at installation. For example, the source
names for radars in a two radar system might be “RADAR” and
“RADAR1”.
1. OPERATIONAL OVERVIEW
1-15
1.7 Data Boxes
Data boxes, providing navigation data, may be shown on any full-screen display.
Up to six data boxes (two in case of large characters) may be shown, and the
default data boxes are position (in latitude and longitude), course over ground,
speed over ground, trip log and cursor position. The user may choose which
data to display, where to locate it, and show or hide it as desired. In addition,
data boxes may be set independently for each display mode (radar, plotter,
sounder). For how to select data for the data boxes, see paragraph “5.5 Data
Boxes Setup”.
.250/ 319.9
°M
.125nm
SP
H-UP
Data boxes
MODE
NTH UP
NAV
POS
MARK
ENTRY
D.BOX
ON /OFF
TRIP LOG
177nm
POSITION
47
°
58.535'N
122
°
36.496'W
COG
323.6
°
M
SOG
20.0
kt
350.4
°
M
0.000 nm
Plotter display, showing data boxes
1.7.1 Showing, hiding data boxes with soft key
Radar: ZOOM & D. BOX → D. BOX ON/OFF (EBL/VRM data box, cursor data
box also shown/hidden)
Plotter: D. BOX ON/OFF
Sounder: AUTO/D. BOX→D. BOX ON/OFF
1.7.2 Rearranging data boxes
You may select the location for data boxes as follows:
1. Using the cursor pad, move the cursor to the data box you wish to move. As
the cursor enters the box it changes to a hand. Push the [ENTER] knob, and
the hand changes to a fist, meaning the box is correctly selected.
2. Use the cursor pad to drag the data box to the location desired and push the
[ENTER] knob.
1.7.3 Temporarily erasing a data box
You may temporarily erase a data box. Use the cursor pad to place the cursor
inside the data box you wish to erase and press the [CLEAR] key. To redisplay
the box, press the ZOOM & D.BOX soft key D.BOX soft key to display it.
1. OPERATIONAL OVERVIEW
1-16
1.8 Function Keys
The function keys provide for one-touch call up of a desired function. The default
function key settings are as shown in the table below.
Default Setting, Key Label Function
Key Radar Plotter Echosounder
#1 Heading line on/off,
HL Track on/off, TRK TLL output, TLL
#2 Rings on/off, RNG Edit mark/line, EML Clutter, CLT
#3 Echo trail, TRL Ruler, RUL Signal level, SLV
#4 Offcenter, SFT Add new waypoint,
ADD Noise limiter, NL
#5 Radar source, RSR Waypoint
alphanumeric list,
ALP
Picture advance, PA
1.8.1 Executing a function
1. Press the [HIDE/SHOW] key to replace the preset soft key labels with the
function key labels.
34° 22. 3456'N 359.9°
M
TRIP
NU
080° 22. 3456'E
19.9 kt 99.9 nm
BRIDGE
FISH
002WP
Function
keys
T
R
K
E
M
L
R
U
L
A
D
D
A
L
p
Plotter
16.0nm
.250/ 319.9
°M
.125nm
SP
H-UP
Function
keys
TARGET
+
359.9°R
0.24nm
H
L
R
N
G
T
R
L
S
F
T
R
S
R
Radar
Function keys
2. Press function key desired.
Note: Function keys can be individually programmed for the radar, plotter and
sounder displays. For further details see the following:
Radar: paragraph 5.2.3
Plotter: paragraph 5.3.2
1. OPERATIONAL OVERVIEW
1-17
1.9 Simulation Display
The simulation display, for use by service technicians for demonstration
purposes, provides simulated operation to help acquaint you with the many
features your unit has to offer. It allows you to view and control a simulated
plotter, radar and sounder picture, without position-fixing equipment, network
radar or a network sounder. Most controls are operative, thus you may practice
setting destination, enter waypoints, measure range and bearing to a target, etc.
The simulation icon (
S
I
M
) appears when any simulation mode is active.
To start the simulation display;
1. Press the [MENU] key.
2. Press the SYSTEM CONFIGURATION, SYSTEM SETUP and SIMULATION
SETUP soft keys in that order.
SIM
SETUP
EDIT
RETURN
RADAR
LIVE
PLOTTER
LIVE
SOUNDER
LIVE
SPEED
00.0kt
COURSE
000.0°
LATITUDE
45°35.000’N
LONGITUDE
123°00.000’W
START DATE & TIME
00:00 01.APR.01
RADAR SIMULATION DATA
NO
Simulation setup menu
2. Follow appropriate procedure shown below.
Radar
Internally generated echoes
1. Select RADAR, then press the EDIT soft key.
RADAR
▲SIMULATION 1
SIMULATION 2
LIVE
▼
2. Select SIMULATION 1 and press the [ENTER] knob.
3. Press the [MENU] key to close the menu.
1. OPERATIONAL OVERVIEW
1-18
Antenna unit-generated echoes
1. Select RADAR SIMULATION DATA, then press the EDIT soft key.
2. Select YES and push the [ENTER] knob to erase simulation data and get
new data. The message “Now getting demo data. Do not turn off display
unit.” appears while the unit is receiving radar data.
Note: If the network radar could not be found “Radar source is not found.
Cannot get demo data.” appears. Wait one minute after the message
disappears. Actual time may be longer depending on the system
configuration. And if the radar is not active, the message “Radar is not
active. Cannot get demo data.” is displayed. Check that the radar is
plugged in and its signal cable is firmly fastened.
3. Select RADAR, then press the EDIT soft key.
4. Select SIMULATION 2, then press the [ENTER] knob.
5. Press the [MENU] key to close the menu.
Plotter
1. Select PLOTTER, then press the EDIT soft key.
PLOTTER
▲SIMULATION
LIVE
▼
2. Select SIMULATION, then press the [ENTER] knob.
3. Select SPEED and press the EDIT soft key.
4. Enter speed (setting range, 0-99 kt, default speed, 0 kt) with the
alphanumeric keys and push the [ENTER] knob.
5. Select COURSE and press the EDIT key.
6. Select “8 FIGURE” to trace the simulated ship’s track in a figure-eight course,
or enter your own course at DIRECTION. Use the trackball to select digit and
enter value with the alphanumeric keys.
7. Press the ENTER soft key.
8. Select LATITUDE and press the EDIT soft key.
9. Enter latitude (setting range, 85
°
N-85
°
S, default setting, 45
°
35.000’N) and
push the [ENTER] knob.
10. Select LONGITUDE and press the EDIT soft key.
11. Enter longitude (setting range, 180
°
E-180
°
W, default setting, 125
°
00.000’W)
and push the [ENTER] knob.
12. Select START DATE & TIME and push the EDIT soft key.
13. Enter start date and time and push the [ENTER] knob.
14. Press the [MENU] key to close the menu.
1. OPERATIONAL OVERVIEW
1-19
Sounder
1. Select SOUNDER, then press the EDIT soft key.
SOUNDER
▲SIMULATION 1
SIMULATION 2
LIVE
▼
2. Select SIMULATION 1 (internally generated echoes) or SIMULATION 2
(network sounder-generated echoes), then press the [ENTER] knob.
Note 1: If the network sounder could not be found “Sounder source is not
found. Cannot get simulation data.” appears. And if the sounder is
not active, the message “Sounder is not active. Cannot get
simulation data.” is displayed. Check that the sounder is plugged in
and its signal cable is firmly fastened.
Note 2: The gain, shift, range and mode of the SIMULATION 1 mode picture
cannot be adjusted.
3. Press the [MENU] key to close the menu.
2-1
2. RADAR OPERATION
This chapter covers radar operation, including the ARP (Automatic Plotter)
function. ARP requires connection of MODEL1833/1833C series network radar
equipped with the ARP circuit board.
2.1 Radar Display
Cursor
359.9°R
0.18nm
H-UP
. / 319.9
°M
.125nm
SP
TRAIL 30m
02m30s
G1 IN
G2 OUT
ES L
EAV L
IR L
.250
Range/
range ring
interval
Presentation
mode
Alarm icon
Battery icon
Zoom area
Zoom
window
Guard zone 1
Trail time
Trail elapsed time
Guard zone 1
Guard zone 2
Echo stretch
Echo averaging*
Interference rejector
Guard zone 2
VRM2
EBL1
VRM1
EBL2
Range ring
Pulselength
Heading
M: Magnetic
T: True
Heading line
EBL1 range
VRM1 range
Cursor range
and bearing
(Cursor position may
also be shown, in
L/L or Loran C TD.)
EBL2 bearing, VRM2 range
EBL1
27.0°R
VRM1
0 .158nm
EBL2
327.1°R
VRM2
0 .225nm
* = Radar source
Model 1833/1833C
series radar
Own ship vector*
(ARP-equipped model,
true vector mode)
North marker
Radar display
2. RADAR OPERATION
2-2
2.2 Transmitting, Stand-by
1. Turn the power on. The products information appears and is then followed by
the radar screen. You can display the radar screen at once by pressing the
any key.
2. Press the [POWER/BRILL] key momentarily.
3. Press the RADAR STBY soft key to highlight TX on its label.
4. When the radar picture is not required, but you want to keep it in a state of
readiness, press the [POWER/BRILL] key momentarily followed by RADAR
TX soft key.
5. Press the RETURN soft key to finish.
2.3 Tuning
The radar receiver can be tuned automatically or manually, and the default
tuning method is automatic. To adjust manually or switch to automatic tuning, do
the following:
1. Press the [MENU] key to display the main menu.
2. Press the RADAR DISPLAY SETUP soft key.
3. Select TUNING and press the EDIT soft key.
AUTO
MAN
TUNING
Tuning bar
Tuning window
4. Choose MAN or AUTO as appropriate.
5. For manual tuning, adjust the [ENTER] knob until the tuning bar is at its
longest position.
6. Press the RETURN soft key.
7. Press the [MENU] key to close the menu.
Note: If the auto setting does not provide satisfactory tuning, see the installation
manual for how to adjust tuning.
2.4 Adjusting the Gain
The [GAIN] key adjusts the sensitivity of the radar receiver. It works in a manner
similar to the volume control of a broadcast receiver, which amplifies received
signals.
The proper setting is such that the background noise is just visible on the screen.
If your gain setting is too low, weak echoes may be missed. On the other hand
excessive gain yields too much background noise; strong targets may be missed
because of the poor contrast between desired echoes and the background noise
on the display.
2. RADAR OPERATION
2-3
To adjust the receiver gain, transmit on long range, and then do the following:
1. Press the [GAIN] key. The last-used “adjustment window” is displayed. In the
example below, the gain sensitivity adjustment is shown.
.250/ 319.9
°
M
.125nm
SP
H-UP
GAIN
ADJUST
+
359.9
°
R
0.24nm
GAIN
A/C
SEA
A/C
RAIN
FTC
RETURN
GAIN SENSITIVITY
AUTO ROUGH
AUTO MODERATE
AUTO CALM
MAN
0
Item selected for adjustment is highlighted.
Gain adjustment soft keys
2. If the gain sensitivity window is not displayed, press the GAIN soft key to
show it.
GAIN SENSITIVITY
AUTO ROUGH
AUTO MODERATE
AUTO CALM
MAN 0
Gain sensitivity window
3. Press ▲ or ▼ to select AUTO ROUGH, AUTO MODERATE, AUTO CALM,
or MAN (manual) as appropriate. Select an AUTO option according to the
sea state.
4. For manual adjustment, rotate the [ENTER] knob to adjust. The range of
adjustment is 0-100(%).
5. Press the [GAIN] key on the front panel or the RETURN soft key to finish.
2. RADAR OPERATION
2-4
2.5 Reducing Sea Clutter
2.5.1 How the A/C SEA works
Echoes from waves can be troublesome, covering the central part of the display
with random signals known as “sea clutter”. The higher the waves and the higher
the antenna is above the water, the further the clutter will extend. Sea clutter
may affect radar performance because real targets are sometimes hidden by the
echoes of small waves. (See the left-hand figure in the figure below.) When sea
clutter masks the picture, adjust the A/C SEA to reduce the clutter.
The A/C SEA reduces the amplification of echoes at short ranges (where clutter
is the greatest) and progressively increases amplification as the range increases,
so amplification will be normal at those ranges where there is no sea clutter.
A/C SEA adjusted;
sea clutter suppressed
Sea clutter at
screen center
Effect of A/C SEA
2.5.2 Adjusting A/C SEA
A/C SEA should be adjusted so that the clutter is broken up into small dots, and
small targets become distinguishable.
1. Press the [GAIN] key.
2. Press the A/C SEA soft key to show the A/C SEA setting window.
A/C SEA
AUTO ROUGH
AUTO MODERATE
AUTO CALM
MAN
Model 1722/C series radar
A/C SEA
Model 1833/C series radar
00
A/C SEA setting window
3. When the radar source is the Model 1722/C series radar, press ▲ or ▼ to
select AUTO ROUGH, AUTO MODERATE, AUTO CALM, or MAN (manual)
as appropriate. Select an AUTO option according to sea state.
4. For manual adjustment, rotate the [ENTER] knob to adjust while observing
radar echoes. The range of adjustment is 0-100(%). Do not overadjust the
A/C SEA – weak target echoes may be missed.
2. RADAR OPERATION
2-5
5. When the radar source is the Model 1833/C series radar, A/C SEA and
A/C RAIN can be automatically adjusted. Press the A/C AT soft key to select
ON or OFF as appropriate. When turned on, it overrides A/C SEA and A/C
RAIN settings.
6. Press the [GAIN] key on the front panel or RETURN soft key to finish.
2.6 Reducing Precipitation Clutter
The vertical beamwidth of the antenna is designed to see surface targets even
when the ship is rolling. However, by this design the unit will also detect rain
clutter (rain, snow, hail, etc.) in the same manner as normal targets. Precipitation
clutter shows as random dots on the screen.
2.6.1 Adjusting the A/C RAIN
When echoes from precipitation mask solid targets, adjust the A/C RAIN. This
split up these unwanted echoes into a speckled pattern, making recognition of
solid targets easier.
1. Press the [GAIN] key.
2. Press the A/C RAIN soft key to show the A/C RAIN window.
A/C RAIN
0
A/C RAIN setting window
3. Rotate the [ENTER] knob to adjust the A/C RAIN affect. The current level is
shown on the A/C RAIN level bar in the A/C RAIN window, and the range of
adjustment is 0 to 100(%). Do not overadjust the A/C RAIN – weak target
echoes may be missed.
4. Press the [GAIN] key on the front panel or RETURN soft key to finish.
2. RADAR OPERATION
2-6
2.6.2 Adjusting the FTC
To suppress rain clutter from heavy storms or scattered rain clutter, adjust the
FTC. The FTC splits up these unwanted echoes into a speckled pattern, making
recognition of solid targets easier.
Note: In addition to reducing clutter, the FTC can be used in fine weather to
clarify the picture when navigating in confined waters. However, with the
circuit active the receiver is less sensitive. Therefore, turn off the FTC, by
setting it for “0”, when its function is not required.
FTC is available when the radar source is the MODEL1722 series radar.
1. Press the [GAIN] key.
2. Press the FTC soft key to show the FTC window.
FTC
0
FTC setting window
3. Rotate the [ENTER] knob to adjust. The range of adjustment is 0-100(%). Do
not overadjust the FTC – weak target echoes may be missed.
4. Press the [GAIN] key on the front panel or RETURN soft key to finish.
2. RADAR OPERATION
2-7
2.7 Range Scale
The range setting determines the size of the area (in nautical miles) that will
appear on your display. in addition, the range setting will also automatically
adjust the range ring interval so that accurate range measurements may be
made while operating on any range setting.
The range, range ring interval and pulselength appear at the top left-hand corner
of the display.
Press the [RANGE (+ or -)] key to change the range scale.
Range scales (nm, sm)
Range 0.125 0.25 0.5 0.75 1 1.5 2 3 4 6 8 12 16 24 36 48 64
Ring
Interval 0.0625 0.125 0.125 0.25 0.25 0.5 0.5 1 1 2 2 3 4 6 12 12 16
No. of
Rings 2 2 4 3 4 3 4 3 4 3 4 4 4 4 3 4 4
Range scales (km)
Range 0.25 0.5 0.75 1 1.5 2 3 4 6 8 12 16 24 36 48 64
Ring
Interval 0.125 0.25 0.25 0.25 0.5 0.5 1 1 2 2 3 4 6 12 12 16
No. of
Rings 2 2 3 4 3 4 3 4 3 4 4 4 4 3 4 4
Note 1: Maximum range depends on the network radar as shown below.
Model 1722, 1722C: 24 nm
Model 1732, 1732C, 1742, 1742C, 1833, 1833C: 36 nm
Model 1762, 1762C, 1933, 1933C: 48 nm
Model 1943, 1943C: 64 nm
Note 2: You may choose which ranges to use from the RADAR RANGE SETUP
menu. For details see paragraph 5.2.2.
2. RADAR OPERATION
2-8
2.8 Pulselength
The pulselength in use is displayed at the upper left corner of the display.
Appropriate pulselengths are preset to individual range scales. Therefore, you
are not usually required to select them. If you are not satisfied with the current
pulselength setting, however, it is possible to change it for the 1.5 and 3 nm (sm)
ranges (3 and 6 kilometer ranges) as below. Generally, select a longer pulse for
longer detection range and shorter pulse for better range discrimination.
1.5 nm, 1.5 sm, 3 km: Short pulse, medium pulse
3 nm, 3 sm, 6 km: Middle pulse, long pulse
1. Press HIDE/SHOW to show soft the radar soft keys.
2. Set the range to 1.5 or 3 nm, whichever you want to set.
3. Press the SIGNAL PROC. soft key.
1.5/ 319.9
°
M
.500nm
SP
H-UP
SIGNAL
PROCESS
+
359.9
°
R
1.40nm
RETURN
E. AVG
OFF
I. REJ
LOW
PULSE
SHORT
E. STR
LOW
Shown when radar
source is the Model
1833/C series
network radar. Not
shown otherwise.
Signal process soft keys
3. Press the PULSE soft key to select the pulselength setting. SHORT or
MEDIUM for 1.5 nm, 1.5 sm, 3 km and MEDIUM or LONG for 3 nm, 3 sm, 6
km.
4. Press the RETURN soft key to finish.
2. RADAR OPERATION
2-9
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. (When you use the
network radar, input the radar source.)
2.9.1 Selecting a presentation mode
1. Press HIDE/SHOW to show soft the radar soft keys.
2. Press the RADAR DISPLY soft key to show the RADAR DISPLAY soft keys.
.250/ 319.9
°
M
.125nm
SP
H-UP
RADAR
DISPLAY
+
359.9
°
R
0.24nm
SHIFT
HL
OFF
RETURN
MODE
HD UP
RINGS
ON /OFF
RADAR
DISPLAY
+
359.9
°
R
0.24nm
SHIFT
HL
OFF
RETURN
MODE
HD UP
RINGS
MED
MODEL1722C series MODEL1722 series
.250/ 319.9
°
M
.125nm
SP
H-UP
Current
mode
setting
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.
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 MODE soft key to select
presentation mode if necessary. The audio alarm may be silenced with the
[CLEAR] key.
2. RADAR OPERATION
2-10
2.9.2 Description of presentation modes
Head-up (HU)
A display without azimuth stabilization in which the line connecting the center
with the top of the display indicates own ship’s heading. The targets are painted
at their measured distances and in their directions relative to own ship’s heading.
The short line on the bearing scale is the north marker.
Heading Line
North Marker
Head-up presentation mode
Course-up (CU)
The radar picture is stabilized and displayed with the currently selected course at
the top of the screen. As you change heading, the ship’s heading marker moves.
If you select a new course, the picture resets to display the new course at the
top of the display.
Heading Line
North Marker
Course-up presentation mode
2. RADAR OPERATION
2-11
North-up (NU)
In the north-up mode, targets are painted at their measured distances and in
their true (compass) directions from own ship. North is maintained at the top of
the screen. The heading line changes its direction according to the ship’s
heading.
Heading Line
North
North-up presentation mode
True motion (TM)
Fixed radar targets maintain a constant position on the screen, while your own
ship moves across the radar image at the correct speed and heading. A map-like
image is displayed, with all moving vessels traveling in true perspective to each
other and to fixed landmasses. As your ship’s position approaches the edge of
the screen, the radar display is automatically reset to reveal the area ahead of
your ship. You can manually reset your ship’s position at any time by pressing
the RADAR DISPLAY soft key followed by the SHIFT soft key.
Heading Line
North
True motion presentation mode
2. RADAR OPERATION
2-13
2.10.2 Measuring range by cursor
Operate the cursor pad to place the cursor intersection on the inside edge of the
radar target. The range to the target, as well as the bearing, appears to the right
of “+” at the bottom of the display.
.250/ 319.9
°
M
.125nm
SP
H-UP
+ 4.3
°
R
0.240nm
SIGNAL
PROC.
RADAR
DISPLY
NAV
FUNC
TARGET
ZOOM &
D. BOX
Cursor
Target
Bearing and range from own
ship to cursor position
How to measure range and bearing to a target with the cursor
2. RADAR OPERATION
2-14
2.10.3 Measuring range by VRM
1. Press the [EBL/VRM] key to display the EBL/VRM soft keys.
.250/ 319.9
°
M
.125nm
SP
H-UP
EBL
VRM
+
359.9°R
0.240nm
EBL1
ON
VRM1
ON
OFFSET
EBL2
ON
VRM2
ON
EBL/VRM soft keys
2. Press the VRM1 ON (dotted ring VRM) or VRM2 ON (dashed ring VRM) soft
key to select the desired VRM. The selected VRM’s indication, at the bottom
of the screen, is highlighted.
3. Rotate the [ENTER] knob the place the VRM on the inside edge of a radar
target. Read the VRM indication to find range to the target.
4. You may hide the EBL/VRM soft keys by pressing the [EBL/VRM] key.
.250/ 319.9
°
M
.125nm
SP
H-UP
VRM1
(Dotted line)
VRM2
(Dashed line)
VRM1 range
VRM2 range
Active marker is highlighted.
+
359.9°R
0.240nm
EBL
VRM
EBL1
ON
EBL1
---.-°R
VRM1
0.119nm
EBL2
---.-°R
VRM2
0.242nm
VRM1
ON
OFFSET
EBL2
ON
VRM2
ON
How to measure range with the VRM
2. RADAR OPERATION
2-15
2.10.4 Erasing a VRM, VRM indication
Press appropriate VRM soft key and press the [CLEAR] key. The VRM is erased,
and its indication becomes blank.
2.10.5 Erasing EBL/VRM data boxes
Press the EBL or VRM soft key associated with the EBL/VRM data box you wish
to erase. Press the [CLEAR] key once or twice to erase the data box.
2.10.6 Hiding EBL/VRM data boxes
Press the ZOOM & D. BOX and D. BOX ON/OFF soft keys to show or hide the
EBL/VRM data boxes.
2.10.7 Moving EBL/VRM data boxes
When an EBL/VRM data box is obscuring a target that you need to see, you can
move it to another location as shown below. This cannot be done when the
EBL/VRM soft keys are shown.
1. Press the [EBL/VRM] key to erase the EBL/VRM soft keys if shown.
2. Using the cursor pad, place the cursor inside the data box you wish to move.
As the cursor enters the box it changes to a “hand.” Push the [ENTER] knob,
and the hand changes to a fist, meaning the data box is correctly selected.
3. Use the cursor pad to drag the data box to the location desired and push the
[ENTER] knob.
2.11 Measuring the Bearing
There are two ways to measure the bearing to a target: by the cursor, and by the
EBL (Electronic bearing Line).
2.11.1 Measuring bearing by cursor
Use the cursor pad to locate the cursor to the center of the target The bearing to
the target appears in the range and bearing box at the bottom right-hand corner
on the screen, next to the “+” mark.
2.11.2 Measuring bearing by EBL
1. Press the [EBL/VRM] key.
2. Press the EBL1 ON (dotted line EBL) or EBL2 ON (dashed line EBL) soft key
to select the desired EBL. The selected EBL’s indication, at the bottom of the
screen, is highlighted.
3. Rotate the [ENTER] knob to bisect the radar target with the EBL. Read the
EBL indication to find the bearing to the target
4. You may hide the EBL/VRM soft keys by pressing the [EBL/VRM] key.
2. RADAR OPERATION
2-16
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EBL1
(Dotted line)
EBL2
(Dashed line)
EBL2 bearing
Active marker is highlighted.
+
359.9°R
0.24nm
EBL1 bearing
R: Relative
T: True
EBL
VRM
EBL1
330.1°R
VRM1
-.---nm
EBL2
234.1°R
VRM2
-.---nm
EBL1
ON
VRM1
ON
OFFSET
EBL2
ON
VRM2
ON
How to measure bearing with the EBL
Note: Bearing can be shown Relative to ship’s heading (relative) or in reference
to North (True). This setting may be changed by changing the EBL
REFERENCE setting, which is in the RADAR DISPLAY SETUP menu.
See the paragraph “5.2.1 Radar display setup.”
2.11.3 Erasing an EBL, EBL indication
Press appropriate EBL soft key and press the [CLEAR] key. The EBL is erased
and its indication becomes blank.
2.11.4 Erasing EBL/VRM data boxes
Press the EBL or VRM soft key associated with the EBL/VRM data box you wish
to erase. Press the [CLEAR] key once or twice to erase the data box.
2.11.5 Hiding EBL/VRM data boxes
Press the ZOOM & D. BOX and D. BOX ON/OFF soft keys to show or hide the
EBL/VRM data boxes.
2.11.6 Moving EBL/VRM data boxes
When an EBL/VRM data box is obscuring a target that you need to see, you can
move it to another location as shown below. This cannot be done when the
EBL/VRM soft keys are shown.
1. Press the [EBL/VRM] key to erase the EBL/VRM soft keys if appears.
2. Using the cursor pad, place the cursor inside the data box you wish to move.
As the cursor enters the box it changes to a “hand.” Push the [ENTER] knob,
and the hand changes to a fist, meaning the data box is correctly selected.
3. Use the cursor pad to drag the data box to the location desired and push the
[ENTER] knob.
2. RADAR OPERATION
2-17
2.12 Erasing the Heading Line, North Marker
The heading line indicates the ship's heading in all presentation modes. The
heading line is a line from the own ship position to the outer edge of the radar
display area and appears at zero degrees on the bearing scale in head-up
mode; it changes its orientation depending on the ship orientation in north-up,
course-up and true motion modes.
The north marker appears as a short dashed line. In the head-up and course-up
modes the north marker moves around the bearing scale as the ship’s heading
moves.
To temporarily erase the heading line and north marker, press the RADAR
DISPLY soft key followed by the HL OFF soft key. Release the key to redisplay
the markers.
2.13 Reducing Noise
Noise, appearing on the displays as random “speckles,” can be reduced as
follows:
1. Press the [MENU] key to open the menu.
2. Press the RADAR DISPLAY SETUP soft key.
3. Select NOISE REJECTION and press the EDIT soft key.
4. Select OFF, HIGH or LOW as appropriate.
5. Press the ENTER soft key or the [ENTER] knob.
6. Press the [MENU] key to close the menu.
2. RADAR OPERATION
2-18
2.14 Reducing Radar Interference
Radar interference may occur when near another shipborne radar that is
operating in the same frequency band as your radar. Its on-screen appearance
looks like many bright dots either scattered at random or in the form of dotted
lines extending from the center to the edge of the display. Interference effects
are distinguishable from normal echoes because they do not appear in the same
place on successive rotations of the scanner.
Be sure to turn off the interference rejection circuit when no interference exists –
weak targets may be missed.
Radar interference
1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the SIGNAL PROC. soft key.
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RETURN
E. AVG
OFF
I. REJ
LOW
PULSE
SHORT
E. STR
LOW
Shown when radar
source is the Model
1833/C series
network radar. Not
shown otherwise.
Signal process soft keys
3. Press the I. REJ soft key 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 rejecter is on.
2. RADAR OPERATION
2-19
2.15 Zoom
The zoom feature allows you to double the size of the area selected with the
zoom circle, which appears at the bottom right- or left-hand corner on the display.
The zoom feature is available on any range but is inoperative in true motion and
when the display is shifted.
2.15.1 Zooming in on radar targets
1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the ZOOM & D. BOX soft key to show ZOOM & D. BOX soft keys.
3. Press the ZOOM ON/OFF soft key to select ON. A solid circle, called the
“zoom circle,” appears on the display.
4. Use the cursor pad to set the cursor where you want to zoom.
5. Press the CURSOR FLOAT soft key to fix the zoom cursor position. (The
solid circle changes to a dashed one.)
6. To release the cursor, press the CURSOR FLOAT soft key. (The dashed
circle changes to a solid one.) Relocate the zoom cursor, then press the
CURSOR LOCK key.
7. To quit the zoom function, press the ZOOM ON/OFF soft key to select OFF.
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Zoom circle
Zoom window
+
001.0
°
R
0.160nm
ZOOM &
D. BOX
ARPA
TGT ZM
RETURN
ZOOM
ON /OFF
D. BOX
ON/OFF
CURSOR
FLOAT
Requires optional
ARP Board in
1833/1833C series
network radar.
Not shown when
radar source is
otherwise.
Zoom
2.15.2 Zooming ARP, TTM targets
You may zoom in on TTM targets coming into the display. TTM targets can come
from a NAVNET connected RADAR, or from other ARP RADAR that is
outputting the TTM message. Note: TTM stands for Tracked Target Message. It
is a NMEA 0183 data sentence that is an available output from some ARP
capable RADAR. TTM target numbers must be displayed to zoom in on tracked
targets. This can be done by enabling the target ID number option in the ARP
setup menu.
2. RADAR OPERATION
2-20
1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the ZOOM/D.BOX soft key to show ZOOM & D.BOX soft keys.
3. Press the ZOOM soft key to select ZOOM ON.
4. Press the ARP TGT ZM soft key.
SELECT TARGET NO.
▲
▼
1
Target no. selection window
5. Use the [ENTER] knob to select number (1-10) and then push the [ENTER]
knob. If the target does not exist several beep sounds and the zoom function
is cancelled.
To cancel, press the CURSOR LOCK soft key.
Note: The zoom window blends in with the background when the background
color for the radar picture is white. If the window is difficult to see change the
background color.
2.16 Shifting the Picture
Own ship position, or sweep origin, can be displaced manually or automatically
to expand the view field without switching to a larger scale.
2.16.1 Manual shift
The sweep origin can be shifted in any presentation mode to a point specified by
the cursor by up to 60% of the range in use in any direction.
1. Locate the cursor anywhere within the effective radius of the display.
2. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
3. Press the RADAR DISPLY soft key.
4. Press the SHIFT soft key.
5. Press the MANUAL soft key to shift. The heading line shifts to the cursor
location. SHIFT appears at right-hand corner of the display.
6. Press the RETURN soft key to finish.
7. To cancel shift, press the RADAR DISPLY, SHIFT and OFF soft keys in that
order.
2. RADAR OPERATION
2-21
Cursor
Place cursor
where desired. Press the MANUAL soft key.
SHIFT
Shifting the picture manually
2.16.2 Automatic shift
The amount of shift is automatically calculated with speed. The maximum shift
amount is limited to 60% of the range in use. For example, if you set the shift
speed setting for 15 knots and the ship is running at 10 knots, the amount of shift
will be 40%. The formula for determining shift amount is as shown below.
Ship's speed
Shift speed setting
X 0.6 = Amount of shift(%)
Automatic shift mode is only available in the head-up mode.
Setting automatic shift maximum speed
1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the RADAR DISPLY soft key.
3. Press the SHIFT soft key to show the shift soft keys.
4. Press the AUTO S.SPD soft key to display the auto ship speed setting
window.
AUTO SHIP SPEED
15
Auto ship speed setting window
5. Adjust the cursor pad or [ENTER] knob to set the maximum speed of your
vessel and then push the [ENTER] knob or the ENTER soft key to set. The
setting range is 1-999 kt and the default setting is 15 kt.
Automatic shift
Press the AUTO key to automatically shift the sweep origin. To cancel shift,
press the RADAR DISPLAY, SHIFT and OFF soft keys.
2. RADAR OPERATION
2-22
2.17 Using the Offset EBL
The offset EBL can be used to predict a potential collision course, and can also
be used to measure the range and bearing between two targets.
2.17.1 Predicting a collision course
The procedure below may be used to check if a radar target is on a collision
course with your vessel.
1. Press the [EBL/VRM] key to show the EBL/VRM soft keys.
2. Press the EBL1 ON soft key to turn on the EBL1.
3. Press the OFFSET soft key. The origin of EBL1 moves to the cursor position
and an “X” appears at the cursor position.
4. Use the cursor pad to place the cursor on the radar target which looks like it
might be on a collision course with own ship.
5. Push the [ENTER] knob to fix the origin position.
6. After waiting for a few minutes (at least three minutes), rotate the [ENTER]
knob so the EBL bisects the target at the new position. If the target tracks
along the EBL towards the center of the display (your ship’s position), the
target may be on a collision course.
7. To cancel the offset EBL, press the OFFSET soft key.
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Initial target
position
Target tracked
here
+
359.9
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.0.240nm
EBL
VRM
EBL1
ON
VRM1
ON
OFFSET
EBL2
ON
VRM2
ON
EBL1
45.0°R
VRM1
-.---nm
Predicting collision course with the offset EBL
2. RADAR OPERATION
2-25
5. Use the cursor pad to select time desired.
6. Press the ENTER soft key to finish.
2.18.2 Starting echo trails
1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.
2. Press the TARGET and TRAIL soft keys.
3. Press the TRAIL ON/OFF to select ON.
4. Press the RETURN soft key twice to finish.
“TRAIL,” the echo trail time selected and elapsed time appear at the top
right-hand corner of the display. Then, afterglow starts extending from all targets.
Trails are restarted when the range or mode is changed, and zoom or shift is
turned on.
For continuous trails the maximum continuous trail time is 99 minutes and 59
seconds. When the elapsed time clock counts up to that time, the elapsed time
display resets to zero and trail begins again.
To turn off echo trail, press the TRAIL ON/OFF soft key to select OFF at step 3 n
the above procedure.
Note: No echo trails are shown where a tx sector blanking area is set.
2.18.3 Trail brilliance (MODEL1722 series)
Trail brilliance can be selected to high or low as below.
1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.
2. Press the TARGET and TRAIL soft keys.
3. Press the BRILL soft key to select HIGH or LOW.
4. Press the RETURN soft key twice to finish.
2.18.4 Trail gradation (MODEL1722C series)
The echo trails can be shown in single or multiple gradations. Multiple gradation
paints the trails thinner with time, like the afterglow on an analog PPI radar.
1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.
2. Press the TARGET and TRAIL soft keys.
3. Press the GRAD soft key to select SINGLE or MULTI as appropriate.
Multitone Monotone
Multitone and monotone trails
4. Press the RETURN soft key twice to finish.
2. RADAR OPERATION
2-26
2.18.5 Trail color (MODEL1722C series)
The MODEL1722C series may be shown echo trails in blue, yellow, green or
white.
1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.
2. Press the TARGET, TRAIL and TRAIL COLOR soft keys.
TRAIL COLOR
▲BLUE
YELLOW
GREEN
WHITE
▼
Trail color window
3. Use the cursor pad to select the color desired.
4. Press the ENTER soft key.
5. Press the RETURN soft key twice to finish.
2. RADAR OPERATION
2-27
2.19 Echo Stretch
Normally, the reflected echoes from long range targets appear on the display as
weaker and smaller blips even though they are compensated by the radar’s
internal circuitry. The echo stretch function magnifies these small blips in all
ranges. Two types of echo stretch are available: ES LOW which stretches
echoes in bearing direction and ES HIGH which stretches them in both range
and bearing directions.
"LOW" Echo stretch "HIGH" Echo stretch
Bearing
direction Bearing
direction
Range
direction
Echo Stretch OFF
Target
Types of echo stretch
This function magnifies not only targets but also sea clutter and radar
interference. For this reason, be sure sea clutter and radar interference are
properly suppressed before activating the echo stretch.
1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.
2. Press the SIGNAL PROC. soft key.
3. Press the E. STR soft key to select HIGH, LOW or OFF as appropriate.
4. Press the RETURN soft key to finish.
The display shows ES H (High) or ES L (Low) when the echo stretch is on.
2. RADAR OPERATION
2-29
2.21 Outputting TLL Data
Target position data can be output to units of the network and shown on their
plotter screen, with the TTL mark (
X
). This function requires position and
heading data.
1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.
2. Operate the cursor pad to place the cursor on the target whose position you
wish to output.
3. Press the TARGET soft key.
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TARGET
TRAIL
TLL
OUTPUT
ACQ
TARGET
INFO
RETURN
Shown with selection of
1833/C series network
radar equipped with ARP
function as source.
Not shown otherwise.
TARGET soft keys
4. Press the TLL OUTPUT soft key to output target position data.
5. Press the RETURN soft key to finish.
Note: The screen of the TLL recipient may be temporarily interrupted when
receiving TLL from another NavNet display unit. Press any key to restore
normal operation.
2. RADAR OPERATION
2-31
The equipment then searches for targets inside the guard zone to determine the
guard alarm type. If a target is found inside the guard zone the guard zone type
becomes an “Outward guard alarm”, and any target exiting, the guard zone will
trigger an alarm. If no target is found the guard zone type becomes an “Inward
guard alarm”, and any targets entering the guard zone will trigger the alarm. The
guard alarm type is shown as G1(G2) IN or G1(G2) OUT.
Note 1: When the radar range is less than the guard zone range, the audio
alarm sounds and the alarm icon is displayed (red on the color model).
Press the [CLEAR] key to silence the alarm. Press the [ALARM] key and
the message “GUARD1(2) IS OUTSIDE RADAR RANGE” appears.
Reselect appropriate range.
Note 2: If the network radar is set to standby while the guard alarm is active, the
guard alarm is cancelled. The guard alarm is redisplayed when the
radar is set to transmit again.
Note 3: If the network radar is set to standby while the radar picture is not
displayed, the alarm icon appears (red on the color model) and the
alarm sounds. Press the [ALARM] key and the message “STBY MODE
HAS BEEN SELECTED. GUARD/WTCHMN CANCELED.” or
“GUARD/WATCHMAN CANCELED. STBY/TX SELECTED.” appears.
2.22.2 When the alarm is violated…
Any radar target violating the guard zone will flash, the audio alarm sounds, and
the alarm icon appears (red on the color model). Additionally the message
“TARGET ENTERED INTO GUARD1(GUARD2)” or “TARGET LEFT FROM
GUARD1(GUARD2)” is displayed at the bottom of the screen, depending on the
guard zone type. Press the [CLEAR] key to silence the alarm. When this is done,
“G1(G2) ACK” replaces G1(G2) IN(OUT) at the top right corner of the display.
This means the alarm is temporarily deactivated. To reactivate the alarm, press
the SET GUARD1 or SET GUARD2 soft key as appropriate.
2.22.3 Canceling the guard alarm
1. Press the [ALARM] key to show the ALARM menu.
2. Press the ERASE GUARD1 or ERASE GUARD2 soft key as appropriate.
3. Press the RETURN soft key to finish.
2. RADAR OPERATION
2-32
2.23 Watchman
2.23.1 How watchman works
The watchman function periodically transmits radar pulses for one minute to
check for targets in a guard zone. If a target is found in the zone, watchman is
cancelled, the audio alarm sounds and the radar continues transmitting. If no
target is found the radar goes into standby, for the number of minutes selected
on the RADAR DISPLAY SETUP menu. This feature is useful when you do not
need the radar’s function continuously but want to be alerted to radar targets in a
specific area. “WTCH” appears at the top left corner when Watchman is active.
ST-BY
5,10
or
20 min
Tx
1 min
Tx
1 min
Watchman
starts
5,10
or
20 min
ST-BY
**
* Beeps emitted just before radar transmits.
How watchman works
2.23.2 Turning on/off watchman
1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.
2. Press the NAV FUNC soft key.
3. Press the W. MAN ON/OFF soft key to select ON or OFF as appropriate.
4. Press RETURN soft key to finish.
Note: When the watchman is activated and no guard zone is active, the
message “PLEASE SET GUARD ZONE. PRESS ANY KEY TO
CONTINUE.” appears. Press any key and then set a guard zone.
2.23.3 Setting watchman stand-by interval
The watchman standby period interval, that is, the number of minutes the radar
is in standby, can be set to 5, 10 or 20 minutes as follows:
1. Press the [MENU] key.
2. Press the RADAR DISPLAY SETUP soft key.
3. Select WATCHMAN TIME and press the EDIT soft key.
WATCHMAN TIME
5 minutes
10 minutes
20 minutes
Watchman window
4. Select time desired and press the ENTER soft key.
5. Press the [MENU] key to close the menu.
2. RADAR OPERATION
2-33
2.24 Waypoint Marker
A waypoint marker, showing waypoint position output from a navigation device,
may be inscribed on the radar display. You may show or hide this marker as
desired.
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RETURN
W. MAN
ON/OFF
WPT MK
ON /OFF
Waypoint
marker
+
Waypoint marker
1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.
2. Press the NAV FUNC soft key.
3. Press the WPT MK ON/OFF soft key to select ON or OFF as appropriate.
4. Press the RETURN soft key to finish.
2. RADAR OPERATION
2-34
2.25 ARP (option), TTM operation
When the radar source is ARP-equipped Model 1833/C series network radar,
you can manually and automatically acquire and track 10 targets. Once a target
is acquired automatically or manually it is automatically tracked within 0.1 to 32
nm. When the FURUNO heading sensor PG-1000 is connected, RMC sentence
(NMEA) is required for true heading data.
Alternatively, you can display the tracks of other ships by receiving the data
sentence “TTM” through the NETWORK or NMEA port. However, targets cannot
be acquired.
Usage precautions for ARP
WARNING
No one navigational aid should be relied
upon for the safety of vessel and crew.
The navigator has the responsibility to
check all aids available to confirm
position. Electronic aids are not
a substitute for basic navigational
principles and common sense.
• This auto plotter automatically tracks an
automatically or manually acquired radar
target and calculates its course and
speed, indicating them by a vector. Since
the data generated by the auto plotter
are based on what radar targets are
selected, the radar must always be
optimally tuned for use with the auto
plotter, to ensure required targets will not
be lost or unwanted targets such as sea
returns and noise will not be acquired
and tracked.
• A target does not always mean a land-
mass, reef, ships or other surface vessels
but can imply returns from sea surface
and clutter. As the level of clutter changes
with environment, the operator should
properly adjust the A/C SEA, A/C RAIN
and GAIN controls to be sure target
echoes are not eliminated from the
radar screen.
CAUTION
The plotting accuracy and response of
this auto plotter meets IMO standards.
Tracking accuracy is affected by the
following:
• Tracking accuracy is affected by course
change. One to two minutes is required to
restore vectors to full accuracy after an
abrupt course change. (The actual
amount depends on gyrocompass
specifications.)
• The amount of tracking delay is inversely
proportional to the relative speed of the
target. Delay is on the order of 15-30
seconds for high relative speed; 30-60
seconds for low relative speed.
Display accuracy is affected by the
following:
• Echo intensity
• Radar transmission pulsewidth
• Radar bearing error
• Gyrocompass error
• Course change (own ship or target)
2. RADAR OPERATION
2-35
2.25.1 Activating/deactivating ARP, TTM
1. Press the [MENU] key followed by the ARP SETUP soft key to show the ARP
SETUP menu.
ARP TARGET INFO
INTERNAL ARP
CANCEL ALL TARGETS
NO
ARP VECTOR MODE
TRUE
ARP VECTOR TIME
30 minutes
HISTORY INTERVAL
OFF
CPA OFF
TCPA 30 seconds
AUTO ACQUISITION AREA
OFF
TARGET ID NUMBER
OFF
ARP
SETUP
EDIT
RETURN
ARP setup menu
2. Select ARP TARGET INFO, and then press the EDIT soft key to show the
ARP target info window.
ARP TARGET INFO
▲
▼
INTERNAL ARP
EXTERNAL ARP
OFF
ARP target info window
3. Select INTERNAL ARP, EXTERNAL ARP or OFF as appropriate.
INTERNAL ARP: The radar source must be the MODEL1833/C series radar.
Select this item also for a NavNet unit being fed ARP targets.
EXTERNAL ARP: Receive TTM data sentence via NETWORK or NMEA port.
Target tracks are shown but targets cannot be acquired.
OFF: Turns off the ARP or TTM display.
4. Press the ENTER soft key.
5. Press the [MENU] key to close the menu.
2. RADAR OPERATION
2-36
2.25.2 Acquiring and tracking targets (ARP only)
Ten targets may be acquired and tracked manually and automatically. When you
attempt to acquire an eleventh target, the message “ARP FULL – ALREADY
TRACKING 10 TARGETS!” appears for five seconds. To acquire another target,
terminate tracking of an unnecessary target as shown in the paragraph 2.25.4.
Manual acquisition
1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.
2. Press the TARGET soft key.
3. Place the cursor on the target to acquire and press the ACQ soft key.
4. Press the RETURN soft key.
The plot symbol changes its shape according to its status as below. A vector
appears about one minute after acquisition, indicating the target’s motion trend.
At acquisition 1 min. after
acquisition
3 min. after
acquisition
01* 01* 01*
Vector
* = Target number shown when TARGET ID NUMBER is
turned on in the ARP SETUP menu.
Target Number
ARP plot symbols
Automatic acquisition
The ARP can acquire up to ten targets automatically by setting an automatic
acquisition area. When automatic acquisition is selected after acquiring targets
manually, only the remaining capacity for targets may be automatically acquired.
For example, if seven targets have been manually acquired, three targets may
be automatically acquired.
1. Press the [MENU] key to show the main menu.
2. Press the ARP SETUP soft key to show the ARP SETUP menu.
3. Operate the cursor pad to select AUTO ACQUISITION AREA.
4. Press the EDIT soft key to show the automatic acquisition area window.
AUTO ACQ. AREA
▲
▼
OFF
ON
Automatic acquisition area window
5. Select ON.
6. Press the ENTER soft key.
2. RADAR OPERATION
2-37
7. Press the [MENU] key to close the menu. An acquisition area of 2.0 to 2.5
miles in range and ±45º on either side of the heading line in bearing appears.
Note: Targets being tracked in automatic acquisition are continuously
tracked when switching to manual acquisition.
Automatic acquisition area
45° port 45° starboard
2.0 - 2.5 nm
Automatic acquisition area
2.25.3 Displaying target number (internal, external ARP)
Target number can be shown for ARP and TTM targets as below.
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.125nm
SP
H-UP
TARGET
TRAIL
TLL
OUTPUT
ACQ
TARGET
INFO
RETURN
ARP
Target
Number
01
+
359.9°R
0.240nm
ARP target number
1. Press the [MENU] key.
2. Press the ARP SETUP soft key.
3. Select TARGET ID NUMBER.
4. Press the EDIT soft key.
5. Select ON or OFF (default setting) as appropriate.
6. Press the ENTER soft key.
7. Press the [MENU] key to close the menu.
2. RADAR OPERATION
2-38
2.25.4 Terminating tracking of ARP targets
When 10 targets have been acquired, no more targets may be acquired unless
targets are cancelled. If you need to acquire additional targets, you must first
cancel one or more individual targets, or all of the targets, using one of the
procedures below.
Terminating tracking of selected targets
1. Place the cursor on the target to terminate tracking.
2. Press the [CLEAR] key to erase to terminate tracking and erase the target.
Terminating tracking of all targets
1. Press the [MENU] key followed by the ARP SETUP soft key.
2. Select CANCEL ALL TARGETS.
3. Press the EDIT soft key.
CANCEL ALL TARGETS
▲
▼
YES
NO
Cancel all targets window
4. Select YES.
5. Press the ENTER soft key.
6. Press the [MENU] key to close the menu.
2. RADAR OPERATION
2-39
2.25.5 Setting vector attributes (ARP)
What is a vector?
A vector is a line extending from a tracked target which shows estimated speed
and course of the target. The vector tip shows an estimated position of the target
after the selected vector time elapses. It can be useful to extend the vector
length in order to evaluate the risk of collision with any target.
Vector
Vector
Vector reference, vector time
You may reference the vectors to North (True) or ship’s heading (relative) as
desired. Vector time can be set to 30 seconds, 1, 3, 6, 15 or 30 minutes.
1. Press the [MENU] key followed by the ARP SETUP soft key to show the ARP
SETUP menu.
2. Operate the cursor pad to select ARP VECTOR MODE.
3. Press the EDIT soft key to show the vector mode window.
ARP VECTOR MODE
RELATIVE
TRUE
Vector mode window
4. Select TRUE or RELATIVE as appropriate.
5. Press the ENTER soft key.
6. Select ARP VECTOR TIME, and then press the EDIT soft key to show the
ARP vector time window.
ARP VECTOR TIME
▲
▼
30 seconds
1 minute
3 minutes
6 minutes
15 minutes
30 minutes
ARP vector time window
7. Operate the cursor pad to select vector time among 30 sec, 1 min, 3 min, 6
min, 15 min and 30 min.
8. Press the ENTER soft key.
9. Press the [MENU] key to close the menu.
2. RADAR OPERATION
2-40
2.25.6 Displaying past position display (ARP)
This ARP can display time-spaced dots (maximum 10 dots) marking the past
positions of any targets being tracked. You can evaluate a target’s actions by the
spacing between dots. Below are examples of dot spacing and target movement.
(a) Ship turning (b) Ship running
straight
(c) Ship reduced
speed
(d) Ship increased
speed
Past position displays
To turn the past position display on or off:
1. Press the [MENU] key followed by the ARP SETUP soft key.
2. Operate the cursor pad to select HISTORY INTERVAL.
3. Press the EDIT soft key to show the plot interval window.
HISTORY INTERVAL
▲
▼
OFF
30 seconds
1 minutes
3 minutes
6 minutes
History interval window
4. Operate the cursor pad to select plotting interval among 30 sec, 1 min, 3 min
and 6 min, or select OFF to turn off the past position display.
5. Press the ENTER soft key.
6. Press the [MENU] key to close the menu.
2. RADAR OPERATION
2-41
2.25.7 ARP, TTM target data
This ARP calculates motion trends (range, bearing, course, speed, CPA and
TCPA) of all target been tracked. You can show this data for a tracked target as
below. TARGET ID NUMBER, in the ARP SETUP menu, must be turned on to
show ARP target data.
1. Place the cursor on the target whose data you want to see.
2. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.
3. Press the TARGET and TARGET INFO soft keys. The data of the selected
target appears at the bottom left-hand corner of the display. (If an EBL/VRM
data box is displayed the ARP data box will be under it.)
4. Press the RETURN soft key to finish.
5. To erase the ARP target data box, select the corresponding target with the
cursor and press the [CLEAR] key.
.250/ 319.9
°T
.125nm
SP
H-UP
359.9°R
0.240nm
TARGET
TRAIL
TLL
OUTPUT
ACQ
TARGET
INFO
RETURN
ARP
Target
No.01 VECTOR TRUE 15min
CSE 359.9°T SPD 12.5kt
CPA 2nm TCPA 12.35
CPA and TCPA
Course and Speed
Target No., Vector Reference (True), Vector Time
01
Cursor +
+
ARP target data
2. RADAR OPERATION
2-42
2.25.8 CPA/TCPA alarm (ARP)
When the predicted CPA of any target becomes smaller than a preset CPA alarm
range or its predicted TCPA less than a preset TCPA alarm limit, an audio alarm
sounds, which you may silence with the [CLEAR] key. In addition, the target plot
symbol of the offending target changes to a triangle and flashes together with its
vector. Press the [ALARM] key and the message COLLISION ALARM appears.
Press the CLEAR ALARM soft key to acknowledge the alarm. The flashing of the
triangle plot symbol continues until you intentionally terminate tracking of the
target. The ARP continuously monitors the predicted range at the Closest Point
of Approach (CPA) and predicted time to CPA (TCPA) of each target to own ship.
Provided that this feature is used correctly, it will help prevent the risk of collision
by alerting you to threatening targets. It is important that gain, A/C SEA, A/C
RAIN and other radar controls are properly adjusted and the ARP is set up so
that it can track targets effectively.
CPA/TCPA alarm ranges must be set up properly taking into consideration the
size, tonnage, speed, turning performance and other characteristics of own ship.
CAUTION
The CPA/TCPA alarm should never be
relied upon as the sole means for detect-
ing the risk of collision. The navigator is
not relieved of the responsibility to keep
visual lookout for avoiding collisions,
whether or not the radar or other plotting
aid is in use.
Follow the steps shown below to set the CPA/TCPA alarm range:
1. Press the [MENU] key followed by the ARP SETUP soft key.
2. Operate the cursor pad to select CPA.
3. Press the EDIT soft key to show the CPA window.
CPA
▲
▼
OFF
0.5nm
1nm
2nm
3nm
5nm
6nm
CPA window
4. Select a CPA limit desired by the cursor pad.
5. Press the ENTER soft key. The ARP SETUP menu reappears.
6. Press the cursor pad to select TCPA.
7. Press the EDIT soft key to show the TCPA window.
2. RADAR OPERATION
2-44
2.26 Interpreting the Radar Display
2.26.1 General
Minimum and maximum ranges
Minimum range
The minimum range is defined by the shortest distance at which, using a scale of
1.5 or 0.75 nm, a target having an echoing area of 10 m2 is still shown separate
from the point representing the antenna position. It is mainly dependent on the
pulselength, antenna height, and signal processing such as main bang
suppression and digital quantization.
Maximum range
The maximum detecting range of the radar, Rmax, varies considerably
depending on several factors such as the height of the antenna above the
waterline, the height of the target above the sea, the size, shape and material of
the target, and atmospheric conditions.
Under normal atmospheric conditions, the maximum range is equal to the radar
horizon or a little shorter. The radar horizon is longer than the optical one by
about 6% because of the diffraction property of the radar signal. Rmax is given
in the following equation.
Rma
x
= 2.2 x
(
h1 + h2
)
where Rmax: radar horizon (nautical miles)
h1: antenna height (m)
h2: target height (m)
Radar horizon
Optical horizon
Radar horizon
For example, if the height of the antenna above the waterline is 9 meters and the
height of the target is 16 meters, the maximum radar range is;
Rma
x
= 2.2 x
(
9+ 16
)
= 2.2 x
(
3 + 4
)
= 15.4 n
m
It should be noted that the detection range is reduced by precipitation (which
absorbs the radar signal).
2. RADAR OPERATION
2-45
Radar resolution
There are two important factors in radar resolution (discrimination): bearing
resolution and range resolution.
Bearing resolution
Bearing resolution is the ability of the radar to display the
echoes received from two targets, which are at the same range and close
together, as separate targets. Bearing resolution is directly proportional to the
antenna length, and inversely proportional to the radar's wavelength.
Range resolution
Range resolution is the ability to display the echoes received
from two targets, which are on the same bearing and close to each other, as
separate targets.
Bearing accuracy
One of the most important features of the radar is how accurately the bearing of
a target can be measured. The accuracy of bearing measurement basically
depends on the narrowness of the radar beam. However, the bearing is usually
taken relative to the ship’s heading, and thus, proper adjustment of the heading
marker at installation is an important factor in ensuring bearing accuracy. To
minimize error when measuring the bearing of a target, select a range which will
put the target as far out to the edge of the radar screen as possible.
Range measurement
Measurement of the range to a target is also a very important function of the
radar. Generally, there are two means of measuring range: the fixed range rings
and the variable range marker (VRM). The fixed range rings appear on the
screen with a predetermined interval and provide a rough estimate of the range
to a target. The variable range marker’s diameter is increased or decreased so
that the marker touches the inner edge of the target, allowing the operator to
obtain more accurate range measurements.
2. RADAR OPERATION
2-46
2.26.2 False echoes
Occasionally echo signals appear on the screen at positions where there is no
target, or disappear even if there are targets. False target situations may be
recognized, however, if you understand why they are displayed. Typical false
echoes are shown below.
Multiple echoes
Multiple echoes occur when a transmitted pulse returns from a solid object like a
large ship, bridge, or breakwater. A second, a third or more echoes may be
observed on the display at double, triple or other multiples of the actual range of
the target as shown below. Multiple reflection echoes can be reduced and often
removed by decreasing the gain (sensitivity) or properly adjusting the [A/C SEA]
control.
Own ship
Target
True
echo
Multiple
echo
Multiple echoes
Sidelobe echoes
Every time the radar pulse is transmitted, some radiation escapes on each side
of the beam. This stray RF is called sidelobe. If a target exists where it can be
detected by the side lobes as well as the main lobe, the side echoes may be
represented on both sides of the true echo at the same range. Sidelobes appear
usually only on short ranges and from strong targets. They can be reduced
through careful reduction of the gain or proper adjustment of the A/C SEA
control.
Target B
(True)
Target B
(Spurious)
Target A
Sidelobe echoes
2. RADAR OPERATION
2-47
Virtual image
A relatively large target close to your ship may be shown at two positions on the
screen. One of them is the true echo directly reflected by the target and the other
is a false echo which is caused by the mirror effect of a large object on or close
to your ship as shown in the figure below. If your ship comes close to a large
metal bridge, for example, such a false echo may temporarily be seen on the
screen.
True
echo
False
echo
Own
ship
Target ship
Mirror image
of target ship
Virtual image
Shadow sectors
Funnels, stacks, masts, or derricks in the path of the antenna block the radar
beam. If the angle subtended at the antenna is more than a few degrees, a
non-detecting sector or blind spot may be produced. Within this sector, targets
can not be detected.
Radar
antenna
Radar
mast
Shadow sector
Shadow sectors
2. RADAR OPERATION
2-48
2.26.3 SART (Search and Rescue Transponder)
A Search and Rescue Transponder (SART) may be triggered by any X-Band (3
cm) radar within a range of approximately 8 nm. Each radar pulse received
causes it to transmit a response which is swept repetitively across the complete
radar frequency band. When interrogated, it first sweeps rapidly (0.4 µs) through
the band before beginning a relatively slow sweep (7.5 µs) through the band
back to the starting frequency. This process is repeated for a total of twelve
complete cycles. At some point in each sweep, the SART frequency will match
that of the interrogating radar and be within the pass band of the radar receiver.
If the SART is within range, the frequency match during each of the 12 slow
sweeps will produce a response on the radar display, thus a line of 12 dots
equally spaced by about 0.64 nautical miles will be shown.
When the range to the SART is reduced to about 1 nm, the radar display may
show also the 12 responses generated during the fast sweeps. These additional
dot responses, which also are equally spaced by 0.64 nm, will be interspersed
with the original line of 12 dots. They will appear slightly weaker and smaller
than the original dots.
9500 MHz
9200 MHz
Radar antenna
beamwidth
Screen A: When SART
is distant Screen B: When SART
is close
Lines of 12 dots
are displayed in
concentric arcs.
Echo of SART
Position of
SART
Own ship's
position Own ship's
position
SART mark
length Radar receiver
bandwidth
Sweep time
7.5 µs 95 µs
Sweep start High speed sweep signal
Low speed sweep signal
24 NM 1.5 NM
Position of
SART
Echo of
SART
Appearance of SART signal on the radar display
2. RADAR OPERATION
2-49
General procedure for detecting SART response
1. Use the range scale of 6 or 12 nm as the spacing between the SART
responses is about 0.6 nm (1125 m) to distinguish the SART.
2. Turn off the automatic clutter suppression (if applicable).
3. Turn off the Interference Rejector.
General remarks on receiving SART
SART range errors
When responses from only the 12 low frequency sweeps are visible (when the
SART is at a range greater than about 1 nm), the position at which the first dot is
displayed may be as much as 0.64 nm beyond the true position of the SART.
When the range closes so that the fast sweep responses are seen also, the first
of these will be no more than 150 meters beyond the true position.
Radar bandwidth
This is normally matched to the radar pulselength and is usually switched with
the range scale and the associated pulselength. Narrow bandwidths of 3-5 MHz
are used with long pulses on long range and wide bandwidths of 10-25 MHz with
short pulses on short ranges.
Any radar bandwidth of less than 5 MHz will attenuate the SART signal slightly,
so it is preferable to use a medium bandwidth to ensure optimum detection of
the SART.
Radar side lobes
As the SART is approached, sidelobes from the radar antenna may show the
SART responses as a series of arcs or concentric rings. These can be removed
by the use of the [A/C SEA] control although it may be operationally useful to
observe the sidelobes as they may be easier to detect in clutter conditions and
also they will confirm that the SART is near to the ship.
Gain
For maximum range SART detection the normal gain setting for long range
detection should be used, that is, with background noise speckle visible.
3-1
3. PLOTTER OPERATION
3.1 Plotter Displays
You may show the plotter display over the entire screen, in the overlay screen
(MODEL1722C series), or in a combination screen. Press the [DISP] key to
show the screen selection window, and then rotate the [ENTER] knob to select
PLOT, NAV or OVRLY (overlay) as appropriate.
3.1.1 Full-screen plotter display
BRIDGE
FISH
002WP
34° 22. 3456'N 359.9° M TRIP NU
080° 22. 3456'E
19.9 kt 99.9 nm
MODE
NTH UP
NAV
POS
MARK
ENTRY
D. BOX
ON/OFF
16.0nm
S
I
M
Nav data window
(Data changes with NAV soft
key setting and cursor
status. For details see next page.)
Course bar
Functions for
soft keys
Own ship
track
Own ship
marker
Presentation mode
(North-up)
Icon (from left)
North Marker
Chart
Alarm
Battery
Track Hold
Chart Offset
Save
L/L Offset
Battery
Simulation
(See icon
table on
page A-14
for details.) Waypoint name
Waypoint marker
Scale
Trip distance
Full-screen plotter display
Note: The own ship marker blinks when the GP-310B loses the GPS signal. For
the NavNet display units receiving the GPS signal, the message “No GPS
fix!” appears approx. one minute after the signal is lost and is
accompanied by the audio alarm. For the NavNet display unit connected
to the GP-310B, the visual alarm is released soon after loss and the audio
alarm sounds five minutes later.
3. PLOTTER OPERATION
3-2
Nav data window
The data shown in the nav data window depends on the status of the NAV soft
key and the cursor.
359. 9° 359. 9 °
M
79. 9°F NU
19. 9kt 99. 9nm 345 ft
Bearing to Waypoint
Course, Speed
Range
to
Waypoint
Water Temp.,
Depth*
CSE
SOG BRG
RNG TMP
DPT
NAV
S/C
soft key
Presentation
Mode
Own Ship Mark Speed Trip Distance
NAV
POS
soft key
34°24. 3456'N 359. 9°
M
TRIP
NU
124°24. 3456'W 19. 9kt 99. 9nm
CourseLatitude, Longitude
Presentation
Mode
Own ship
position
Own ship
speed and
course
NAV
OFF
soft key
Turns off
nav data
window
* Requires appropriate
sensor.
34°24. 3456'N 359. 9°M
TRIP
NU
124°24. 3456'W 59.9nm 99. 9nm
Bearing to Cursor
Latitude, Longitude
Trip Distance
Presentation
Mode
+
Cursor Mark
Latitude and longitude
of cursor intersection
Range to
Cursor
359. 9°M
TTG
4D02H23M NU
19. 9nm
ETA
1st 13:45
Bearing to WaypointWaypoint Name
Estimated Time of
Arrival
Range to Waypoint
Waypoint Mark
001WPT
Presentation
Mode
NAV
WPT
soft key
Destination
waypoint
data
Time-to-Go
to Destination
359. 9°
M
359. 9°
M
TRIP
NU
19. 9nm 19. 9kt 99. 9nm
CourseBearing to WaypointWaypoint Name
001WPT
Waypoint data
(waypoint selected
with cursor)
Presentation
Mode
SpeedRange to WaypointWaypoint Mark Trip Distance
Contents of nav data window
3. PLOTTER OPERATION
3-3
3.1.2 Compass display
The compass display, displayed at the bottom half of the screen in the
combination display, provides steering information. The compass rose shows
two triangles: the black triangle (hollow on monochrome model) shows the
bearing to destination waypoint and the red (solid on monochrome) triangle,
which moves with ship’s course, shows own ship’s course.
The water temperature and depth graphs, which require appropriate sensors,
show the latest 10 minutes of temperature and depth data. The range of the
depth graph is 50 feet and it is automatically adjusted with depth.
Bearing scale
XTE monitor (See next page for description.)
Depth
graph* Water
temperature
graph*
Time-to-go
to destination Estimated time of
arrival at destination
Ship's course
(red and filled on
color model, filled
on monochrome model)
Destination
waypoint Range to destination waypoint
Speed over ground
* = Requires appropriate
sensor.
Destination
waypoint bearing
(black and filled
on color model,
hollow on mono-
chrome model)
0
50
20
10
BRG
DPT TMP
359.9°M
45.2ft 16.2°F
359.9°M
003WPT
0D 9H 59MTTG 23th23:59
ETA
SOG
10.0
kt
10.0
kt
STW
RNG
99.9nm
N
w
E
Speed through water
CSE
Direction to steer
(green on color model)
Shown (in red on
color model) when
direction to steer
is "left."
Own ship marker
(For color model, black when within XTE range,
yellow when over; flashes when over XTE range
on monochrome model)
Compass display
3. PLOTTER OPERATION
3-4
Reading the XTE (cross-track error) monitor
The XTE monitor, located below the compass rose, shows the amount you are
off course and the direction to steer to return to course. The own ship marker
shows the direction and amount your ship is off course. It is shown in black when
the amount of cross-track error is within the XTE monitor range and yellow when
it is over. (On the monochrome model it flashes when the amount of cross-track
error is more than the XTE monitor range.) An arrow appears at the right or left
side of the XTE monitor and it shows the direction to steer to return to intended
course. (For the color model the arrow is shown in red when you should steer
left, and green when you should steer right.) In the example on the previous
page you would steer right to return to course. To maintain course, steer the
vessel so the own ship marker stays at the center of the XTE monitor.
Soft keys
EDIT XT-LMT: Sets the range for XTE monitor scale. See the procedure below
for how to set.
RESTART NAVGATION TO
CURRENT WAYPOINT.
ARE YOU SURE?
YES ... PUSH ENTER KNOB
NO ... PUSH CLEAR KEY
(Setting the range for the XTE monitor)
1. With the compass (or highway) display shown, press the EDIT XT-LMT soft
key to display the following window.
XTE LIMIT
0 .1nm
XTE range setting window
2. Use the cursor pad to select digit to change. Note that all digits may be
cleared by pressing the [CLEAR] key.
3. Use the [ENTER] knob to set value, or press the CANCEL soft key to cancel.
RESET XTE: Displayed when destination is set, and enables you to restart
navigation. When this soft key is pressed, the following message is displayed.
3. PLOTTER OPERATION
3-5
3.1.3 Highway display
The highway display, displayed at the lower half of the screen in the combination
display, provides a graphic presentation of ship’s track along intended course. It
is useful for monitoring ship’s progress toward a waypoint. The own ship marker
shows relation between ship and intended course. The XTE monitor shows the
direction and amount your vessel is off course – the arrow shows the direction to
steer to return to your course and the numeric the distance you are off course.
Using the figure below as an example, you would steer right 0.009 nm to return
to course. To maintain course, steer the vessel so the own ship marker stays
aligned with the intended course line.
Time-to-go
to destination
Range to
destination waypoint
Estimated time of
arrival at destination
0.9 nm
WPT001
003WPT
0D 9H 59M
TTG 23th23:59
ETA
SOG
10.0kt 10.0 kt
STW
RNG
99.9 nm
Destination
waypoint
Own ship marker
Speed over ground, speed through water
XTE monitor
0.009nm
0.9 nm
XTE range
Intended
course
Destination waypoint
Direction to steer (green on color model)
Shown (in red on color model) when
direction to steer is "left."
Highway display
Soft keys
EDIT XT-LMT: Sets the range for the XTE monitor scale. See the procedure on
the previous page for how to set.
RESET XTE: Displayed when destination is set, and enables you to restart
navigation. See the description on the previous page.
3. PLOTTER OPERATION
3-6
3.1.4 Nav data display
The nav data display provides comprehensive navigation data. The user may
select what data to display and where to display it, on the NAV DATA DISPLAY
SETUP menu. For details see paragraph “5.8 Nav Data Display Setup.”
Appropriate sensors are required. Bars ( - -) appear when corresponding sensor
is not connected.
ETA
TTGTRIP LOG
103
nm
TIMEDATE
FEB 1
0
D
2
H
30
M
1st 1:25
01:27:05
2001
POSITION
34° 34. 5678' N
120° 34. 5678'
W
SOGWPT POSITION
COURSESTW 10.0
kt
RANGEBEARING9.2°
M
TEMPDEPTH
Speed over ground
Position
Water temperature
Range to
waypoint
Course
Bearing to
waypoint
Speed through
water
Waypoint
Position
Depth
Half-screen display
Full-screen display
34° 14. 5678' N
120° 14. 5678'
W
10.0
kt
101.6°
M
0.18
nm
1324.1
ft
18.2 °
C
Nav data displays
3. PLOTTER OPERATION
3-8
3.2.2 Course-up
The destination is at the top of the screen when a destination is set. When no
destination is set, the course or heading is at the top of the screen at the
moment the course-up mode is selected. A filled triangle marks own ship’s
position.
Note: The data sentences GGA and VTG must be output from the NavNet
display unit connected to the GPS navigator in order to correctly orient the own
ship marker in the course-up mode on other NavNet display units.
34° 22. 3456'N 359.9°
M
TRIP
CU
080° 22. 3456'E
19.9 kt 99.9 nm
GO TO
CURSOR
MODE
CSE UP
CENTER
MARK
ENTRY
+
WPT 001
16.0nm
D. BOX
ON/ OFF
Plotter display, course-up mode, destination set
3.2.3 Auto course-up
The course is at the top of screen at the moment the auto course-up mode is
selected. n this mode, the current course is kept at the top of the screen within
22.5 degrees. For example, if your vessel turns for than 22.5 degrees to port or
starboard, the chart display will rotate so that your course is pointing towards the
top of the screen again.. A filled triangle marks own ship’s position.
34° 22. 3456'N 359.9° M TRIP CU
080° 22. 3456'E
19.9 kt 99.9 nm
GOTO
CURSOR
MODE
AT CU
CENTER
MARK
ENTRY
+
16.0 nm
D. BOX
ON/OFF
Plotter display, auto course-up mode
3. PLOTTER OPERATION
3-9
3.3 Shifting the Display
The plotter display can be shifted on the plotter display as below.
1. Press the cursor pad to display the cursor.
2. Locate the cursor at a screen edge and press and hold down the cursor pad.
The screen shifts in the direction opposite of cursor location.
3. To automatically return the cursor to the screen center, press the CENTER
soft key. This also returns own ship marker to the screen center.
3.4 Chart Scale
Chart scale (range) may be selected with the [RANGE -] or [RANGE +] key. The
[-] key expands the chart range; the [+] key shrinks it.
Charts scales
nm 0.125 0.25 0.5 1 2 4 8 16 32 64 128 256 512 1024
km 0.23 0.46 0.93 1.85 3.70 7.41 14.8 29.6 59.3 119 237 474 948 1896
sm 0.144 0.29 0.58 1.15 2.30 4.60 9.21 18.4 36.8 73.7 147 295 589 1178
Note: When the display is expanded or shrunk beyond the range of the chart
card in use the message “NO CHART” appears, along with the appropriate
chart icon. See the illustration on the next page for details.
3. PLOTTER OPERATION
3-11
3.5.2 Indices and chart enlargement
When the [RANGE] key is operated, you will see several frames appear on the
chart. These frames are called indices and they show you what parts of the chart
can be zoomed in on.
Sample chart (Japan) showing indices
When a chart cannot be displayed
A chart will not be displayed in the following conditions:
• When the chart scale is too large or too small.
• When scrolling the chart outside the indices.
• When this happens, select proper chart scale.
Note: Indices can be turned on or off with “Chart border line.” See page 5-13 for
FURUNO and NAVIONICS charts and 5-16 for C-MAP charts.
3. PLOTTER OPERATION
3-12
3.5.3 FURUNO and NavCharts™
Chart symbols
The table below shows FURUNO and NavCharts™ mini chart symbols and their
meanings.
Chart symbols
Symbol Description
Summit
Wreck
Lighthouse
Lighted Buoy
Buoy
Radio Station
Symbol Description
Position of Sounding
Obstruction
Fishing Reef
Platform
Anchorage
Data for aids to navigation
Selected FURUNO and NavCharts™ charts can show buoy and lighthouse data.
Simply place the cursor on the lighthouse or buoy mark.
Place the cursor on
a lighthouse or buoy mark.
Lighthouse mark
NAVAID: /FL 6S 12M
FROM OS 52.38nm 48.0°
Period (ex.: 6 seconds)
Visibility in nautical
mile (ex.: 12 miles)
FL : Flashing
F : Fixed light
F FL : Fixed and Flashing light
MO : Morse code light
Oc : Occulting light
Example of data displayed
Range and bearing
from own ship
Example of buoy, lighthouse data
3. PLOTTER OPERATION
3-14
3.5.4 C-MAP cards
Cursor and data display
Besides its fundamental functions of providing position data, the cursor can also
show caution area, depth area, source of data, etc. on C-map charts. In addition,
you can display information about an icon by placing the cursor on it.
1. Press the cursor pad to turn the cursor on.
2. Use the cursor pad to place the cursor on the position desired.
3. Push the [ENTER] knob to open the Objects window.
Objects
Navigation mark, fixed
Beacon, generic
Light
Light
Depth area
Source of data
Objects window
4. Use the cursor pad to select the item desired.
5. Push the [ENTER] knob to display details for object selected.
Navigation Mark, fixed
Light
Color
White
Height
12.0 Meters
Light characteristic
flashing
Sectorlimit one
64.0 Degrees
Sectorlimit two
138.0 Degrees
Signal group
(3)
Signal period
10.0 Seconds
Example of caution area window
6. Press the RETURN soft key to close the window.
7. Repeat step 4 to 6 to select other item.
8. Press the [MENU] key to close the menu.
3. PLOTTER OPERATION
3-15
Icon data
You may place the cursor on any icon to find information about the selected icon.
1. For example, place the cursor on a lighthouse icon.
Place the cursor on a lighthouse icon.
34° 22. 3456'N 359.9°
M
TRIP
NU
080° 22. 3456'E
19.9 kt 99.9 nm
GO TO
CURSOR
CENTER
+
MARK
ENTRY
16.0nm
D. BOX
ON /OFF
MODE
NTH UP
Lighthouse icon
2. Push the [ENTER] knob to show data. For example, the following window
appears for a lighthouse.
Objects
Lighthouse
Tower
Light
Underwater Lock
Depth contour
Depth contour
Depth area
Source of data
Object windows
3. Use the cursor pad to select the item desired.
4. Push the [ENTER] knob to display detailed information.
3. PLOTTER OPERATION
3-16
Color
white
Height
7. 00 Meters
Light characteristic
occulting
XXXXXXXX
XXXXXXXX
Navigation mark, fixed
Light.
Sample lighthouse data
5. Press the RETURN soft key to close the Objects window.
Tide information
The C-MAP chart card provides for calculation of the tide heights for any date.
Additionally it displays the times of sunrise and sunset.
1. Press the cursor pad to place the cursor on a Tide icon ( T).
2. Push the [ENTER] knob to open the Objects window.
34 24. 3456 N 359.9 NU
124 24. 3456 W 59.9kt 024nm
+
OBJECTS
Tide height
Cartographic area
Source of data
TRETURN
Objects window
3. Use the cursor pad to select “Tide height.”
4. Push the [ENTER] knob to open the TIDE window.
3. PLOTTER OPERATION
3-17
Time: 04:35
Height: 0.45ft
Draught: 0.65ft
01/07/30 +13:30
43° 32.860N
010° 18.022E
Port info
LIVORNO (LEGHORN)
High Water(max)
0.86ft(13:30 L)
Low Water(min)
0.35ft(21:00 L)
Sunrise
07:52L
Sunset
16:53 L
0.86
0.74
0.61
0.48
0.3504812162024
RETURN
DATE
Vertical
Cursor
TRIP
NU
t 99.9 nm
Horizontal
Cursor
Tide window
5. Press the DATE soft key to open the DATE window.
CHANGE DATE
(DAY. MONTH. YEAR)
01. 01. 2001
LIMIT: 31.12.2099
Date window
6. Use ◄ or ► to position the cursor where desired and then rotate the
[ENTER] knob to set. Repeat to enter complete date.
7. Push the [ENTER] knob to show the tidal graph for entered date.
8. Use ◄ or ► to locate the vertical cursor on the hour desired.
9. Use ▲ or ▼ to shift the level cursor to select draught.
10. See the time, height and draught indications below the tide graph for tide
information.
11. Press the RETURN soft key to close the TIDE window.
3. PLOTTER OPERATION
3-18
3.6 Working with Track
Your ship’s track is plotted on the screen using navigation data fed from a
navigation receiver. This section shows you what you can do with track, from
turning it on or off to changing its plotting interval. Own ship’s track is displayed
in the default setting and on the color model it is red.
3.6.1 Displaying track
Own ship track
1. Press the [MENU] key followed by the CHART SETUP and TRACKS &
MARKS CONTROL soft keys to open the TRACK CONTROL menu.
OWN SHIP TRACK DISP
ON
TARGET TRACK DISPLAY
ON
INTERVALTIME
TIME INTERVAL
00m10s
DISTANCE INTERVAL
00.10nm
SHIP’S TRACK STATUS
TRACKING
TRACK: 1234/2000
MARK : 9/6000
OWN SHIP TRACK DISP
ON
OWN SHIP TRACK COLOR
RED
TARGET TRACK DISPLAY
ON
TARGET TRACK COLOR
WHITE
INTERVALTIME
TIME INTERVAL
00m10s
DISTANCE INTERVAL
00.10nm
MEMORY(TRACK & MARK)
2000PTS
(MARK MEMORY)
(6000)POINTS
SHIP’S TRACK STATUS
TRACKING
TRACK: 1234/2000
MARK : 9/6000
MODEL1722 seriesMODEL1722C series
TRACK
CONTROL
EDIT
ERASE
T & M
MARK
SETUP
RETURN
TRACK
RESUME
EDIT
ERASE
T & M
MARK
SETUP
RETURN
TRACK
RESUME
TRACK
CONTROL
MEMORY(TRACK & MARK)
2000PTS
(MARK MEMORY)
(6000)POINTS
Track control menu
2. Use the cursor pad to select OWN SHIP TRACK DISP.
3. Press the EDIT soft key to show the track display window.
4. Use the cursor pad to select ON (default setting) or OFF as appropriate.
5. Press the ENTER soft key.
6. Press the [MENU] key to close the menu.
Note: The number of track and mark points used appears at the SHIP’S TRACK
STATUS window on the TRACK CONTROL menu. Using the figure above
as an example, 1234 points of track and 9 marks have been recorded.
3. PLOTTER OPERATION
3-19
Target track
Target track, NMEA format TTM data sentence (target data fed from an ARP
board-equipped MODEL1833/1833C series network radar), may be turned on or
off as desired. The default setting is ON.
1. Press the [MENU] key followed by the CHART SETUP and TRACKS &
MARKS CONTROL soft keys to open the TRACK CONTROL menu.
2. Use the cursor pad to select TARGET TRACK DISPLAY.
3. Press the EDIT soft key to show the target track display window.
4. Use the cursor pad to select to ON or OFF as appropriate.
5. Press the ENTER soft key.
6. Press the [MENU] key to close the menu.
3.6.2 Stopping, restarting plotting of own ship track
When your boat is at anchor or returning to port you probably won’t need to
record its track. You can stop recording the track, to conserve the track memory,
as follows:
1. Press the [MENU] key followed by the CHART SETUP and TRACKS &
MARKS CONTROL soft keys to open the TRACK CONTROL menu.
SHIP’S TRACK STATUS
NOT TRACKING
TRACK: 1234/2000
MARK : 9/6000
▲
SHIP’S TRACK STATUS
TRACKING
TRACK: 1234/2000
MARK : 9/6000
▲
TRACK
CONTROL
EDIT
ERASE
T & M
MARK
SETUP
RETURN
TRACK
RESUME
EDIT
ERASE
T & M
MARK
SETUP
RETURN
TRACK
HALT
TRACK
CONTROL
TRACK
HALT
TRACK
RESUME
Track is plotted Track not plotted
OWN SHIP TRACK DISP
ON
OWN SHIP TRACK COLOR
RED
TARGET TRACK DISPLAY
ON
TARGET TRACK COLOR
WHITE
INTERVALTIME
TIME INTERVAL
00m10s
DISTANCE INTERVAL
00.10nm
MEMORY(TRACK & MARK)
2000PTS
(MARK MEMORY)
(6000)POINTS
OWN SHIP TRACK DISP
ON
OWN SHIP TRACK COLOR
RED
TARGET TRACK DISPLAY
ON
TARGET TRACK COLOR
WHITE
INTERVALTIME
TIME INTERVAL
00m10s
DISTANCE INTERVAL
00.10nm
MEMORY(TRACK & MARK)
2000PTS
(MARK MEMORY)
(6000)POINTS
Track control menu (MODEL1722C series)
2. Press the TRACK RESUME soft key. The soft key now shows “TRACK
HALT” and the indication “TRACKING” in the SHIP’S TRACK STATUS
window changes to “NOT TRACKING.” In addition, the icon “H” is displayed
at the top of the plotter display and own ship marker becomes a hollow circle.
To restart plotting the track, press the TRACK HALT soft key.
3. Press the [MENU] key to close the menu.
3. PLOTTER OPERATION
3-20
3.6.3 Changing track color (MODEL1722C series)
Track can be displayed in red (default setting), yellow, green, light-blue, purple,
blue and white. It can be useful to change track color on a regular basis to
discriminate between previous day’s track, etc.
Own ship’s track
1. Press the [MENU] key followed by the CHART SETUP and TRACKS &
MARKS CONTROL soft keys to open the TRACK CONTROL menu.
2. Use the cursor pad to select OWN SHIP TRACK COLOR.
3. Press the EDIT soft key to display the track color window.
TRACK COLOR
▲RED
YELLOW
GREEN
LIGHT BLUE
PURPLE
BLUE
WHITE
▼
Own ship track color window
4. Use the cursor pad to select the color desired.
5. Press the ENTER soft key.
6. Press the [MENU] key to close the menu.
Target track
Like own ship’s track, target tracks can be displayed in red (default setting),
yellow, green, light-blue, purple, blue and white.
1. Press the [MENU] key followed by the CHART SETUP and TRACKS &
MARKS CONTROL soft keys to open the TRACK CONTROL menu.
2. Use the cursor pad to select TARGET TRACK COLOR.
3. Press the EDIT soft key to display the track color window.
4. Use the cursor pad to select the color desired.
5. Press the ENTER soft key.
6. Press the [MENU] key to close the menu.
3. PLOTTER OPERATION
3-21
3.6.4 Track plotting method and interval for own ship track
In drawing the own ship track, first the ship’s position fed from a navigation
receiver is stored into the unit’s memory at an interval of time or distance. A
shorter interval provides for better reconstruction of the track, but the storage
time of the track is reduced. When the track memory becomes full, the oldest
track is erased to make room for the latest.
Track plotting method
Track may be plotted by time or distance interval. The default setting is “time.”
1. Press the [MENU] key followed by the CHART SETUP and TRACKS &
MARKS CONTROL soft keys to open the TRACK CONTROL menu.
2. Use the cursor pad to select INTERVAL.
3. Press the EDIT soft key to display the plot window.
INTERVAL
▲ TIME
DISTANCE
▼
Plot window
4. Use the cursor pad to select TIME or DISTANCE as appropriate. Distance is
useful for conserving track memory, since no track is recorded when the boat
is stationary.
5. Press the ENTER soft key.
6. Press the [MENU] key to close the menu.
Track plotting interval
1. Press the [MENU] key followed by the CHART SETUP and TRACKS &
MARKS CONTROL soft keys to open the TRACK CONTROL menu.
2. Use the cursor pad to select TIME INTERVAL or DISTANCE INTERVAL as
appropriate.
3. Press the EDIT soft key to display the time or distance interval window,
depending on what you selected at step 2.
TIME INTERVAL
00m10s
(When selecting TIME INTERVAL.)
DISTANCE INTERVAL
00.10nm
(When selecting DISTANCE INTERVAL.)
Setting range: 0 min 01 sec (continuous) - 99 min 59 sec
Default setting: 10 sec
Setting range: 00.01 nm (continuous) - 99.99 nm (km, sm)
Default setting: 0.1 nm
Interval windows
3. PLOTTER OPERATION
3-23
3.6.6 Erasing track
This paragraph shows you how to erase own ship’s track and target tracks. You
can erase ship’s track three ways: collectively, by color (color model only) and by
area.
Erasing own ship track by area
You can erase own ship’s track by area as below. This function is not available
on the overlay display (MODEL1722C series).
1. Press the [MENU] key followed by the CHART SETUP, TRACKS & MARKS
CONTROL and ERASE T & M soft keys to show the ERASE menu.
ERASE ALL TRACKS
ERASE TRACKS BY AREA
ERASE TARGET TRACKS
ERASE ALL MARKS/LINES
ERASE MARKS BY AREA
ERASE ALL TRACKS
ERASE TRACKS BY AREA
ERASE TRACKS BY COLOR
ERASE TARGET TRACKS
ERASE ALL MARKS/LINES
ERASE MARKS BY AREA
ERASE ERASE
RETURNRETURN
EDIT EDIT
MODEL1722 seriesMODEL1722C series
SHIP’S TRACK STATUS
TRACKING
TRACK: 1234/2000
MARK : 9/6000
SHIP’S TRACK STATUS
TRACKING
TRACK: 1234/2000
MARK : 9/6000
Erase menu
2. Use the cursor pad to select ERASE TRACKS BY AREA and press the EDIT
soft key. The menu is erased and the plotter display appears.
3. Use the cursor pad to place the cursor at the top left of corner which you
want to erase track from.
4. Press the START soft key or the [ENTER] knob.
5. Drag the cursor diagonally to the bottom right corner of the area which you
want to erase track from.
6. Press the END soft key or the [ENTER] knob. You are asked if it is all right to
delete the track.
7. Push the [ENTER] knob to delete the track selected.
8. Press the [MENU] key twice to close the menu.
3. PLOTTER OPERATION
3-24
Erasing own ship track by color (color model)
You may erase own ship’s track by color as follows:
1. Press the [MENU] key followed by the CHART SETUP, TRACKS & MARKS
CONTROL and ERASE T & M soft keys to show the ERASE menu.
2. Use the cursor pad to select ERASE TRACKS BY COLOR and press the
EDIT soft key.
ERASE TRK BY COLOR
▲RED
YELLOW
GREEN
LIGHT BLUE
PURPLE
BLUE
WHITE
▼
Erase track by color window
3. Use the cursor pad to select the color you want to erase and push the
[ENTER] knob or ENTER soft key. You are asked if it is all right to delete the
track.
4. Push the [ENTER] knob to erase track color selected.
5. Press the [MENU] key twice to close the menu.
Erasing all own ship track
1. Press the [MENU] key followed by the CHART SETUP, TRACKS & MARKS
CONTROL and ERASE T & M soft keys to show the ERASE menu.
2. Use the cursor pad to select ERASE ALL TRACKS and press the EDIT soft
key.
3. Push the [ENTER] knob to erase all own ship track.
4. Press the RETURN soft key.
5. Press the [MENU] key to close the menu.
Erasing all target tracks
1. Press the [MENU] key followed by the CHART SETUP, TRACKS & MARKS
CONTROL and ERASE T & M soft keys to show the ERASE menu.
2. Use the cursor pad to select ERASE TARGET TRACKS and press the EDIT
soft key.
3. Push the [ENTER] knob to erase all target tracks.
4. Press the [MENU] key twice to close the menu.
3. PLOTTER OPERATION
3-54
3.11.2 Arrival alarm
The arrival alarm informs you that your boat is approaching a destination
waypoint. The area that defines an arrival zone is that of a circle which you
approach from the outside of the circle. The alarm will be released if your boat
enters the circle. When the arrival alarm is active a dashed circle (red on the
MODEL1722C series) marks the arrival alarm area.
Note: Arrival alarm and anchor watch alarm cannot be set together.
: Alarm area
Own ship
Alarm
range
Destination
waypoint
How the arrival alarm works
1. Press the [ALARM] key to open the alarm menu.
2. Use the cursor pad to select ARRIVAL ALARM.
3. Press the EDIT soft key to show the arrival alarm window.
ARRIVAL ALARM
▲ON 0.010nm
OFF
▼
Arrival alarm window
4. Use the cursor pad to select ON.
5. Use the cursor pad and [ENTER] knob to enter alarm range: Use ◄ or ► to
select digit; rotate the [ENTER] knob to set value. The available arrival alarm
range is 0.001 to 9.999 miles.
6. Press the ENTER soft key or push the [ENTER] knob to register setting.
7. Press the [ALARM] key to close the menu.
4. VIDEO SOUNDER OPERATION
4-3
4.2.2 Description of sounder displays
Single frequency display
Color bar
Soft keys
Variable Range Marker (white)
Depth scale
Tx frequency
Depth
Temp.
scale
(orange)
Water
temp.
graph
Water
temp.
display 114
52
Minute marker
Icons
(alarm, battery,
simulation)
Bottom echo
Zero line
Fish
echo
50k
SHIFT
AUTO/
D. BOX
DISPLY
MODE
FREQ
50 /200
50
30
F
40
SOUNDER
SINGLE
Display mode
0
50
100
150
200
Cross-hair
cursor
0'30"
Time
S
I
M
Indications on the single frequency display
Note 1: The water temperature display requires an appropriate water
temperature sensor. It can be turned on or off with TEMPERATURE
GRAPH on the SOUNDER menu.
Note 2: When using the vertically split plotter/sounder display with dual
frequency or zoom display, the depth scale is not displayed. Further, a
last digit on the depth may be overlapped by the line which splits
screens.
Selecting transmission frequency
The single frequency display shows either the 50 kHz picture or 200 kHz picture.
To select transmission frequency, press the FREQ 50/200 soft key to select “50”
or “200”.

Specyfikacje produktu

Marka: Furuno
Kategoria: Radar statku
Model: 1722C

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