JRC J-NAV 500 User manual

INSTRUCTION MANUAL
GPS NAVIGATOR
NWZ-4551
For further information contact :
HEAD OFFICE &
SALES DEPT. Akasaka Twin Tower(MAIN), 17-22, Akasaka 2-chome, Minato-ku,
Tokyo 107-8432 JAPAN
Phone
Fax
Telex
CODE No.7ZPNA0115
MODEL DC-50-NWZ-4551
Made in JAPAN
Mar. 1998 (First Edition)
May. 1998 KP (2500)
: [phone]
: [phone]
: 0242-5420 JRCTOK J
MAIN PLANT
1-1, Shimorenjaku 5-chome, Mitaka-shi,
Tokyo 181-8510 JAPAN
Phone
Fax
Telex
: [phone]
: [phone]
02822-351 JRCMTK J
MODE
MENU
MOB
DIM
CONT
CLR PWR
EVENT
GOTO
OFF OFF
PUSH
GPS NAVIGATOR

GPS Navigator J-NAV500
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General Information
Thank you for purchasing the GPS Navigator J-NAV500. This navigator obtains position data
from a GPS/DGPS receiver and can shows all types of marine navigation displays.
• Before attempting to operate this unit, read this instruction manual thoroughly to correctly and safely
operate this unit in accordance with the warning instructions and operation procedures in this manual.
• Keep this instruction manual in an easily accessible location so that you can refer to it in the event of
a failure or other problem.

GPS Navigator J-NAV500
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Before you begin
Related symbols
In this manual, and on the equipment, there are several labels to call your attention to impor-
tant items that, if not handled correctly, could present danger to yourself or property. The
labels used and their meaning are described below.
Read through the safety instructions and make sure you fully understand them before you
read the rest of the manual.
Indicates a situation which, if not avoided, could result in
death or serious injury and is extremely likely to cause
minor injury or property damage.
Indicates a situation which, if not avoided or handled
correctly, may result in injury or property damage, but not
likely to lead to serious personal injuries.
Symbol examples
Dangerous
voltage
Disassembly
prohibited Prohibition
Remove plug! Instruction
WARNING
CAUTION
Equilateral triangles alert the user to a possible danger (danger or warning) that
may be caused by wrongful operation or misuse of this product.
The symbol inside the triangle graphically represents the actual danger. (The
example on the left warns the user of the danger of electric shock.)
White circles with a 45¡ slash angled downward from upper left to lower right
notifies the user that specific actions are prohibited to prevent possible danger.
The symbol inside the circle is a graphical representation of the actual prohibited
action. (The example on the left notifies the user that disassembly is prohibited.)
Black filled-in circles instruct the user to carry out a specific obligatory action to
prevent possible danger.
The symbol inside the circle is a graphical representation of the actual action to
be carried out. (The example on the left instructs the user to remove the plug from
the outlet.)

GPS Navigator J-NAV500
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Safety Precautions
Do not disassemble or modify this unit. Otherwise, a fire,
an electrical shock, or a failure may occur.
Do not remove or insert the power cable with wet hands.
Otherwise, you may suffer from an electrical shock.
Do not use voltage other than 12 VDC.
Otherwise, a fire, an electrical shock, or a failure may
occur.
Do not fray, damage or modify the power cable. When a
heavy object is placed on the cable or the cable is heated,
pulled,orforciblybent,thecablewillbebrokenresultingin
a fire or an electrical shock.
Donotoperatethisunitwhileyouarealsosteeringtheves-
sel as this may lead to an accident.
Intheeventthatsmokingorburningodorsaredetected,
immediately terminate operation of the set and contact
our company, branch, or local office. Continuing opera-
tion as is may cause a fire or electrical shock. Never
attempt to service the interior of this set.
WARNING

GPS Navigator J-NAV500
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This unit does not automatically assess position informa-
tion.Itistheuser’sresponsibilitytojudgepositionandnavi-
gationalinformation.
Donotdropthisunitintowater. Whenwaterenterstheunit,
a failure may occur.
When removing the power cord, be sure to remove the
power cord terminal correctly. If the power cord is pulled,
thecordmaybedamagedresultinginafireoranelectrical
shock.
When cleaning the surface, do not use any organic
solvent such as thinner or benzine, Otherwise, the
painting on the surface may be damaged.
Forcleaningthesurface,removethedustandgrease
withcleandrycloth.
See “List of Offices” on the back cover of this instruction manual for information on addresses and
telephone numbers of sales departments, subsidiaries, branch offices and service centers of Japan Radio
Co., Ltd.
CAUTION

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Outside View

GPS Navigator J-NAV500
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Contents
General Information .............................................................................. 1
Before you Begin................................................................................... 2
Safety Precautions ................................................................................ 3
Outside View ......................................................................................... 5
Definition of Terms ................................................................................ 8
1. Overview..................................................................................... 10
1.1 Functions ................................................................................................................ 10
1.2 Features .................................................................................................................. 11
1.3 Equipment supplied................................................................................................ 11
1.4 Structure ................................................................................................................. 12
1.5 Equipment connections .......................................................................................... 12
2. Names and Functions of Parts ................................................... 13
2.1 Operation panel ...................................................................................................... 13
2.2 Rear panel............................................................................................................... 15
3. Installation................................................................................... 16
3.1 Display installation ................................................................................................. 16
3.1.1 Choosing the location.................................................................................. 17
3.1.2 Mounting the unit ........................................................................................ 17
3.2 Cable connections .................................................................................................. 19
3.2.1 GPS/DGPS receiver connection ................................................................. 19
3.2.2 Power cable connection .............................................................................. 19
3.2.3 Ground connection ...................................................................................... 21
3.3 EMC Installation & service guidelines................................................................... 22
3.3.1 Installation................................................................................................... 22
3.3.2 Check Before Going to Sea......................................................................... 22
3.3.3 Servicing and Safety ................................................................................... 22
4. Operation .................................................................................... 23
4.1 Overview ................................................................................................................ 23
4.2 Turning the unit on/off............................................................................................ 24
4.3 Selecting display language ..................................................................................... 25
4.4 Switching between Main Display Modes ............................................................... 26
4.5 Main Display Modes .............................................................................................. 28
4.5.1 POSITION display mode ............................................................................ 28
4.5.2 NAVIGATION display mode...................................................................... 32
4.5.3 CDI display mode ....................................................................................... 32
4.5.4 PLOT display mode and setting the plot scale............................................ 33
4.5.5 WAYPOINT display mode.......................................................................... 34
4.5.6 ROUTE display mode ................................................................................. 34
4.5.7 STATUS/SF display mode .......................................................................... 35
4.6 Basic menu selection operations ............................................................................ 37

GPS Navigator J-NAV500
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4.7 Adjusting Contrast and Backlighting ..................................................................... 39
4.8 Setting Alarms (Arrival/Anchor/Off-course/DGPS) .............................................. 39
4.9 Navigation using direct route (GOTO)................................................................... 41
4.10 Navigation according to route plan ........................................................................ 42
4.11 Entering current position as a waypoint [EVENT] ................................................ 43
4.12 Man-Overboard Mode............................................................................................ 44
4.13 Position Display Mode/Position Correction/Geodetic System Correction/
Magnetic Compass Correction ............................................................................... 44
4.14 Setting Navigation Display Modes and Units ........................................................ 46
4.15 Setting CDI range and Display Time Format ......................................................... 47
4.16 Setting Plotting Information ................................................................................... 47
4.17 Entering Waypoints ................................................................................................ 48
4.17.1 Editing Waypoint Lists ................................................................................ 48
4.17.2 Storing waypoints........................................................................................ 50
4.17.3 Erasing, copying and measuring waypoints ................................................ 52
4.17.4 Sorting waypoint list ................................................................................... 54
4.18 Setting Route Plans ................................................................................................ 54
4.18.1 Making a route plan .................................................................................... 55
4.18.2 Editing route plan........................................................................................ 56
4.18.3 Erasing route plans...................................................................................... 57
4.19 Setting GPS information......................................................................................... 58
4.19.1 Setting positioning mode and averaging time ............................................. 58
4.19.2 Initializing GPS/DGPS receiver.................................................................. 59
4.19.3 TD initializing ............................................................................................. 60
4.19.4 Setting DGPS beacon.................................................................................. 61
4.20 Setting Data Output and transmit memory data...................................................... 62
4.21 Displaying the Simulator Mode.............................................................................. 64
4.22 Performing Master Reset........................................................................................ 65
5. Maintenance and Inspection....................................................... 66
6 After-sales Service...................................................................... 67
7. Disposal ...................................................................................... 68
7.1 Disposal of Navigator............................................................................................. 68
7.2 Handling Used Lithium Batteries ........................................................................... 68
8. Specifications.............................................................................. 69
Appendices ......................................................................................... 71
Appendix A Message list .............................................................................................. 71
Appendix B Geodetic system Table .............................................................................. 73
Appendix C NMEA0183 output sentence and data format........................................... 75
Appendix D Waypoint/Route Plan Data In/Output ....................................................... 80
Appendix E Waypoint List............................................................................................ 81
How to address inquiries List of Offices Back Cover

GPS Navigator J-NAV500
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Definition of Terms
GPS satellite GPS stands for “Global Positioning System.” One of several
satellites launched by the US Department of Defense to estab-
lish a military navigational aid system.
DGPS The process of correcting the inaccuracies of GPS position data
from GPS satellites by receiving a beacon receiver (via a bea-
con station) in a base station whose exact position is known.
Position fixing The process of deriving the current location of a vessel using
GPS or DGPS receiver.
2D (two-dimensional) Position fixing using satellites and height information.
3D (three-dimensional) Position fixing using satellites information only from four or
more satellites
HDOP Indicates the accuracy of position fixing. The smaller the num-
ber shows the more accurate the position fixing.
When the satellites are grouped together, HDOP increases and
positionfixing accuracyis poor; whenthe satellites arefar apart,
HDOP decreases and position fixing accuracy is enhanced.
Loran C time difference Information for deriving current position by calculating the time
difference between a master station and secondary station of the
Loran C system. (Information designed for users experienced
in the use of the Loran C navigation system)
TD Time difference. The time difference between a master station
and secondary station of the Loran C system.
Route plan A plan that registers a series of waypoints in a navigational path.
CDI Course Deviation Indicator. Information that indicates the ex-
tent you have strayed from the route of deviation and the direc-
tion to steer.
Arrival alarm An alarm indicating that the vessel has come within the set dis-
tance of a waypoint.
Anchor alarm An alarm indicating that the vessel has deviated more than the
set distance from a waypoint.
Off-course alarm An alarm indicating that the vessel has deviated more than a set
distance from a predetermined course.

GPS Navigator J-NAV500
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Automatic sequencing mode Function that automatically steps from one waypoint to the next
when the arrival perpendicular point has been detected.
Manual sequencing mode The unit sounds the arrival alarm and the operator will manually
press key to step to next leg in the route plan when it is safe to
do so.
Default value Factory set value
NMEA0183 National Marine Electrical Association 0183. Association es-
tablishing international standards for communications between
navigational equipment and the standard established by NMEA.
Master reset A function for clearing all settings and returning to the factory
set values (default values). Two types of master resets are pro-
vided. A soft reset clears all data except for waypoint and route
plan data. A hard reset clears all data.
Initialization It takes up to 20 minutes to GPS position fixing when it is used
for the first time or after a master reset has been performed.
This time can be reduced by entering initialization values such
as estimate position, time and antenna height.

GPS Navigator J-NAV500
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1. Overview
1.1 Functions
Attaching an optional GPS/DGPS receiver (GPS 100 or DGPS 200) makes it possible to turn the GPS
Navigator J-NAV500 into a GPS/DGPS navigational system. This navigational system uses GPS satel-
lites to calculate accurate positions anywhere in the world and under any weather conditions 24 hours
a day. This navigator displays navigational paths to entered waypoints using position data. There are
the following four navigation displays:
• POSITION Displays the latitude and longitude of the current position. It also dis-
plays the bearing and distance to a waypoint, course, speed, etc. and
the Loran C time difference.
• NAVIGATION Displays the bearing and distance to a waypoint, deviation and correct
steering direction to the route, and time to arrival to a destination.
Selections can be made to display the desired information.
• CDI Displays a graphic representation of course deviation. It also displays
correct steering direction, course and speed.
• PLOT Displays a graphic representation of the route line, the tracked line and
waypoints. Waypoints are indicated by symbols or alphabetic charac-
ters.
There is also a [STATUS] display showing status information such as satellite number, beacon fre-
quency and receiving level.
A total of 499 waypoints and 20 route plans can be entered in the navigator. A single press of the
key can turn any current location into a waypoint. Someone should fall overboard, press the
key for an instant graphic representation of that position and the route to return to this position.

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1.2 Features
This navigator is equipped with the following features.
• Large backlit dot matrix liquid crystal display
The large display makes it easy to view the information provided by the many display modes. The
backlit keyboard keys facilitate night operation.
• Graphicrepresentation
The CDI display mode allows you to get the direction to steer at a glance, supports safe navigation
and saves fuel.
The plot display mode displays the symbols registering the route and each waypoint.
• Menu driven easy operation
The display menus facilitate operation by showing what to do next. Menu selections and data
entry are performed with an easy-to-use dial.
• Customize
The great number of features provided makes it possible to customize functions and build your
own navigation system.
• One-touch removal and installation
The display can easily be removed or installed by pressing the button on the rear panel.
• Support for seven display languages is provided.
1.3 Equipment supplied
The table below lists items that are included with your J-NAV500. If an item is missing, contact your
JRC dealer for assistance.
The following optional accessories are also available.
Flush mount kit: MPTG30432
DGPS receiver: DGPS200
GPS receiver: GPS100
24 VDC power supply unit: NBG-121
AC power supply unit: NBG-122
Item Description Q'ty Remarks
Display unit NWZ-4551 1
Bracket MPBX35850 1 Included with the navigator
Power cable CFQ-8410 1 Length 1.8 m, with a fuse (2 A)
Fuse MF60NR-2A 1 Spare fuse (2A)
Tapping screws MPTG30149 1 4 pcs.
Instruction manual DC50-NWZ-4551 1 English

GPS Navigator J-NAV500
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1.4 Structure
The outside view of the display unit is shown below.
Figure 1-1
1.5 Equipment connections
Equipment connections are shown below.
GPS/DGPS receiver
(optional GPS 100 or DGPS 200)
12 VDC power/input Data I/O
(Power cable supplied)
To vessel ground
MODE
MENU
MOB EVENT
GOTO
CONT
DIM CLR
OFF PWR OFF
PUSH
Figure 1-2
MODE
MENU
MOB EVENT
GOTO
CONT
DIM CLR
OFF PWR OFF
PUSH
138
11721
46.5 104
197
46.5
124
74
28 96
UNIT : mm
WEIGHT : Less than 0.9kg

GPS Navigator J-NAV500
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2. Names and Functions of Parts
2.1 Operation panel
The illustration shows the keys on the operation panel and their functions.
Figure 2-1
MODE
MENU
MOB EVENT
GOTO
CONT
DIM CLR
OFF PWR OFF
PUSH
1
2
3
4
5
6
7
98
No. Name Function
• Press this keyin mode exept [MOB ] to selectmain display mode.
• Press this key in the [ Select Mode ] display to return to previous
display mode.
Mode
• Turn to select menu. (Turn dial counterclockwise to scroll down-
ward and turn it clockwise to scroll upward.)
• Selects menu items.
• Sets numeric values when menu items are numeric entry. (The
numbers change faster, when the dial is turned faster.)
• Press the dial to select a menu or to enter a setting.
• When following a route sequence manually, use the dial to step
the next waypoint.
This function is available in the following display modes:
[POSITION]. [NAVIGATION]. [CD] displays
Dial
Down Up
ENT (Press dial)
1
2

GPS Navigator J-NAV500
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No. Name Function
Displays the menus for each display mode.Menu
Use this key to select to destination (see Section 4.9, “Navigation
using direct routes (GOTO).” This key function is available in the
following display modes:
[ POSITION ] , [ NAVIGATION ] , [ CDI ] and [ PLOT ] displays
GOTO
Registersthe current position (buoy or fishing point)as a waypoint.
Thiskeyfunctionisavailable in the following major display modes:
[ POSITION ] , [ NAVIGATION ] , [ CDI ] , [ PLOT ] and [ MOB ]
displays.
Event
Turns on the power.
• Press this key and the key to turn off the power.
• Press this key while holding down the key to perform a
soft reset.
Softreset:Allregistereddataexceptwaypointsand
routeplanaresettothedefaultValues(factory
settings).
Power
• Resets items before the dial was pressed.
• In the Select Mode display, press this key to return to the previous
display.
Clear
Adjusts contrast and brightness of the backlight. This key function
is available in all display modes.
Contrast
Man overboard (position where a person fell overboard). This key
function is available in all display modes. (To return to previous
display mode, press this key for 3 seconds.)
MOB
3
4
5
6
7
8
9

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2.2 Rear panel
Figure 2-2
No. Name Function
Press this button to remove the display unit from the bracket.Release button
Connector for GPS or DGPS receiver (GPS 100 or DGPS 200)
Connects supplied power cable.
(Includes data I/O lines)
GPS/DGPS
DC PWR/DATA
Terminal for connecting to vessel ground.
E terminal
GPS/DGPS
DC PWR/DATA
E
10
11
12
13
10
11
12
13

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3. Installation
3.1 Display installation
Figure 3-1
Make sure that these space requirements are met.
Tabletop
3.1.1 Choosing the location
When choosing a location to mount this unit, please consider the following two criteria for the site.
• The best location to provide ease of operation and viewing of the unit.
• The best location to provide protection from environmental elements. Avoid locations exposed
to direct sunlight and salt spray. Also avoid improperly ventilated locations and places exposed
to high temperatures.
The unit can be screw-mounted on a chart tabletop. Figure 3-1 shows the mount of free space required
around the unit.
CAUTION
Install this unit at least 1 meter away from a magnetic compass. Otherwise, the unit
maycause the compass to indicate unreliably.
UNIT : mm
10
10

GPS Navigator J-NAV500
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3.1.2 Mounting the unit
Wheninstallingthisunitonatabletop,usethedesignatedscrewstosecurethebracket
to a stable wooden surface. Otherwise, the unit could fall and it may cause human
injuryorpropertydamage.
Mount the unit according to the following steps.
(1) Determine the mounting location of the unit and mark the holes of the four screws. Figure 3-2
shows the distance between the holes.
(2) Press the release button to remove the unit from the bracket. (See fig. 3-3)
(3) Secure the bracket to the mounting location with the four supplied tapping screws.
(4) Mount the display unit to the bracket. Make sure that the display unit is firmly attached to the
bracket.
(5) Adjust the unit to the best viewing angle. (See fig. 3-4)
Figure 3-2 Bracket dimensions
84
74.2
CAUTION
Figure 3-3
UNIT : mm

GPS Navigator J-NAV500
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As shown below, an optional flush mount kit can be used to wallmount the navigator. For information
on mounting, refer to the instruction manual supplied with the kit.
Figure 3-4

GPS Navigator J-NAV500
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3.2 Cable connections
The connectors on the rear panel are shown in Figure 2-2.
Whentheequipmentisusedwitha“floating”battery,donottouchthegroundconnec-
tor on this unit and vessel ground simultaneously. Otherwise, you may suffer from a
electrical shock.
WARNING
When the GPS/DGPS receiver has been installed, route the surplus cable from the
receiver at a distance of 30 cm or more from this unit to prevent interference from
occurring in other communication devices.
CAUTION
3.2.1 GPS/DGPS receiver connection
The unit provides with a 12 VDC power supply for a GPS/DGPS receiver (GPS 100 or DGPS 200).
The GPS/DGPS receiver operates when the unit is turned on, and it displays current position and other
GPS status informations received from satellite signals.
Connection procedure:
Connect the GPS/DGPS receiver cable to the GPS/DGPS connector on the rear panel of the unit.
3.2.2 Power cable connection