Simrad MX510,MX512 User Manual
www.simrad-yachting.com
A brand by Navico - Leader in Marine Electronics
Manual
Simrad MX510 and MX512
Navigation Systems
English
Operator & Installation manual
Simrad MX510 and MX512
Navigation Systems
English
The original language for this document is English. In the event of any discrepancy
between translated versions and the English version of this document, the English
document will be the official version.
Document no: 510 100 2002
Revision: B
Date: May 2010
To the best of our knowledge, the content in this publication was correct at the time of
printing.
As we are continuously improving our products we retain the right to make changes to
the product and the documentation at any time. Updated manuals are available from our
website www.simrad-yachting.com, and are free to download.
© Copyright 2010 by Navico Holding AS.
2 | MX510/MX512 Operator & Installation Manual
IMPORTANT NOTICE!!
THE MX51x IS AN AID TO NAVIGATION ONLY. UNDER NO CIRCUMSTANCES
SHOULD IT BE USED IN LIEU OF AUTHORIZED GOVERNMENT CHARTS. ITS
ACCURACY CAN BE AFFECTED BY MANY FACTORS SUCH AS EQUIPMENT
DEFECTS, ENVIRONMENTAL CONDITIONS, OR IMPROPER OPERATION. THE
USER IS RESPONSIBLE FOR SAFE NAVIGATION OF THE VESSEL. THIS INCLUDES
CONSULTING AUTHORIZED GOVERNMENT CHARTS AND EXERCISING COMMON
PRUDENCE AND NAVIGATIONAL JUDGEMENT AT ALL TIMES.
How To Contact Us?
Contact your local SIMRAD Marine dealer for:
Installation, Service, & Technical Support
•
Sales of Accessories
•
Hardware and Software Upgrades
•
Unlike many other consumer electronics industries which only sell consumer electronic
devices, your marine dealer is often your best advisor for installation and service of your
new GPS receiver. We strongly encourage you to utilize the knowledge and experience
of your sales and service dealer.
Should you need to contact us directly for new sales, upgrades, repair service, or
technical support, we can be reached at the following:
USA Office:
NAVICO TORRANCE
A Division of NAVICO, Inc.
23868 Hawthorne Blvd., Suite 201
Torrance, California 90505-5908
USA
+1-310-791-8213 Telephone
+1-310-791-6108 Fax
Internet:
www.simrad-yachting.com/en/Pro ducts/Professional/ MX-Line/
Product Information
The model and serial number of your instrument are given on the instrument. Enter the
model and serial number in the spaces provided below. Always refer to this information
when you contact your dealer.
MX51_ CDU Serial No.:_________________
Antenna Model: _____________ _ ____
Antenna S/N: __ _ _______________
Europe:
NAVICO UK Ltd.
Contact your dealer.
www.simrad-yachting.com/
Store-locator
MX510/MX512 Operator & Installation Manual | 3
About this manual
Models Covered are:
MX51x GPS/DGPS
MX51x/BR
MX51x/BRIM
MX51x/MUC
This manual covers the operation and installation of both the MX510 and MX512 CDU
models. The keypad operation of these models are identical.
We have attempted to take care and develop manuals which provide in-depth
information. Where possible, we have attempted not only to describe what you see on
the screen, but how to understand and use it as well. Obviously, we can’t teach you how
to navigate, but we can help make your work more thorough and enjoyable. Throughout
the manual, you will find helpful hints about the interaction of various functions. In a
piece of equipment that has the many capabilities, important details can sometimes
become obscured in one or two lines of text. In our effort to ensure you get the most out
of this documentation, and to protect against important details becoming lost, don’t be
surprised if you see the same or similar information more than once.
This manual is organized into two main parts. The first section deals with the operation
while the second section talks about the installation and electrical interface. We start
by describing first the MX51x models covered in this book, then the special front panel
features including the traffic light indicator and USB connector. The sections that follow
detail each primary function as it is presented on the front panel (i.e. NAV, RTE, WPT,
PLOT, ...CFG). The appendices describe important details about special functions and
installation of the MX51x.
We hope you find the manual enjoyable and informative reading. As always, we welcome
your comments on improving our products or manuals. We wouldn’t mind if you wrote
to tell us that we did the job right the first time either. You can find a Reader Comment
Card at the back of the manual.
Related Documents
MX51x Quick Reference Guide (P/N 510 100 2003)
Symbols used in this manual
Important text that requires special attention from the reader is emphasized as follows:
Used to draw the reader’s attention to a comment or some important information.
When necessary, used to warn personnel they should proceed carefully to
prevent risk of injury and/or damage to equipment.
4 | MX510/MX512 Operator & Installation Manual
Blank page
Contents | 5
Contents
1 About GPS Navigation ...................................................... 11
Special notes
.......................................................................11
2 Functional Description
..................................................... 13
CDU Congurations
..............................................................13
Basic CDU conguration
................................................13
MX51x DGPS................................................................13
MX51x/BR
..................................................................13
MX51x/BRIM (Backup Receiver Integrity Monitor)
.............14
MX51x/MUC (Multi Unit Control)
..................................... 14
3 DGPS Beacon System
....................................................... 15
4 Keypad & Display Description
.......................................... 17
Differential GPS Trafc Light Operation:
..................................17
GPS Trafc Light Operation:
..................................................18
The Display:
........................................................................19
+ Virtual Softkeys: .......................................................19
The Function Keys:
...............................................................20
Programmable Keys (F1 to F4) .....................................20
Mark / MOB Key .........................................................20
GOTO .......................................................................21
POWER ON/OFF ........................................................21
CLR (CLEAR) .............................................................21
CURSOR ..................................................................21
ENTER .....................................................................21
DAY/NIGHT View .......................................................21
FUNCTION Keys
...................................................................22
Automatic Identication System (AIS) ..........................22
Navigate ....................................................................22
Dead Reckoning
...........................................................23
NAV1 - The Panorama Screen
........................................23
NAV2 - Basic Steering Information
..................................25
6 | Contents
NAV3 - Expanded Navigation Information ........................25
NAV4 - Sensor Input Navigation
.....................................26
NAV5 - Compass Display Screen
.....................................28
NAV6 - Compass Display Screen
.....................................28
Route ........................................................................28
RTE1 - The Active Route
................................................29
Creating a Route Using the GOTO Key:
............................29
Erasing an Existing Route
..............................................31
Creating a Multi-Waypoint Active Route
...........................32
Insert By Number
.........................................................32
Choose in Bank
............................................................33
Insert New Waypoint
....................................................34
Insert Route
................................................................34
Maneuvering Within the Route
........................................35
ETA Setup
...................................................................37
SOG Based on Arrival Date & Time:
................................37
RTE2 - The Route Bank
.................................................38
Waypoint ...................................................................39
Creating and Editing Waypoints
......................................39
Waypoint Lock/Unlock
...................................................42
Removing Waypoints
.....................................................43
Moving waypoints
.........................................................44
Saving or Restoring Memory Data Using a USB Device
......46
Downloading Waypoints & Routes to Other Devices
...........47
Downloading Waypoints to a Personal Computer
...............49
Uploading Waypoints from Other Devices
........................50
Uploading Waypoints from a Personal Computer
...............51
Mark / MOB ...............................................................52
GOTO ........................................................................52
Plot ...........................................................................54
PLOT 1 - Relative to Boat
...............................................55
Customizing the Display
................................................55
Plot Screen Use Examples
.............................................57
Grid Search
.................................................................57
Man Over Board .........................................................58
Remote MOB
................................................................59
Auxiliary ....................................................................59
Contents | 7
AUX1 - Alarm Log .......................................................59
AUX2 - Speed Graph
.....................................................59
AUX3 - Not Used
..........................................................60
AUX4 - Sun Almanac
.....................................................60
AUX5 - Moon Phases
.....................................................60
AUX6 - Batteries
..........................................................60
AUX7 -Unit Information
.................................................60
AUX 10 - Tide
..............................................................61
Current Tide Display
.....................................................61
AUX 11 - Tide Table Port List
..........................................62
Adding a Port
...............................................................63
Position .....................................................................64
POS1 - Position Display (Large Lat/Long Digits)
................64
User GRID
...................................................................65
POS2 - Position, Altitude, Magnetic Variation, & Time
........65
POS3 - Position & Log
...................................................65
GPS ..........................................................................66
GPS1 - GPS Status Screen
.............................................66
GPS2 - GPS Health Screen
.............................................66
GPS3 - Visible Satellites
................................................67
GPS4 - GPS Position Uncertainty
....................................67
GPS5 - RAIM Status Screen
..........................................67
GPS6 - DGPS STATUS
..................................................69
GPS7 - DGPS Messages
.................................................70
Conguration ..............................................................71
Alarms
................................................................................71
Anchor - Anchor Watch Alarm
................................................71
COG SOG - Course & Speed Filter Settings & Setup
..................71
Compass - External Compass Input & Magnetic Variation Table
.. 72
Datum - Current Position Calculation
......................................73
Depth - NMEA Input Control
..................................................73
DGPS - DGPS Conguration
...................................................74
DGPS Mode:
................................................................ 74
DR - Dead Reckoning
............................................................75
Dual Control - Dual Station Control
.........................................75
GPS - Elevation Mask Control
.................................................76
Initial Pos - Initial Position Entry.............................................77
LAN - Local Area Network
.....................................................77
LAN Output (NMEA 0183 OVER IP)
..........................................78
Language - Language Conguration
........................................78
8 | Contents
Lighting - Display/Keyboard Light, Contrast Control & Set Display Default
Setting ...............................................................................78
Log - Speed Log Input (Pulse or NMEA 0183)
...........................79
Log Pulses - GPS SOG Log Pulse Output
..................................79
LORAN-C Integration
............................................................80
Raytheon:
...................................................................80
Locus:
........................................................................81
Memory
..............................................................................83
Navigation - Navigation Method & Waypoint Pass Criterion Control
8 3
NMEA Out 1 - NMEA 0183 Output Data Control
........................85
Other Special Cases Affecting NMEA 0183 Records:
..................87
Operation - General Setup and Control Settings
.......................88
Organizer - Automated Message Reminders
.............................88
Position - Positioning Reference, Mode, & Alarm Control
............89
Printout (n) - Printer Output Control
........................................90
ROT (Rate of Turn)
...............................................................91
Security
..............................................................................92
Serial I/O
............................................................................92
Time - Mode and Format Control
............................................92
USB - USB Mass Storage Conguration
...................................93
VGA ..................................................................................94
Wind ..................................................................................94
Wpt & Rte Input - Uploading Waypoints into the MX51x
.............95
5 Installation
...................................................................... 97
List of Components
..............................................................97
Installation notes
.................................................................99
General
.......................................................................99
Electronic Connections
..................................................99
Wire Preparation Procedure
......................................... 100
External Power
........................................................... 100
Antenna Installation
.................................................... 101
MX51x Navigator Installation
........................................ 102
Equipment Interfacing
................................................. 103
Mechanical installation drawings
........................................... 115
MX510 Electrical installation drawings
................................... 123
MX512 Electrical installation drawings
................................... 131
6 Technical specications
................................................. 141
Appendix A - Datum List
.................................................... 145
Appendix B - Engineering Mode
......................................... 147
AUX7 - Unit Information & Self Test
...................................... 147
Contents | 9
CDU Cold Start - Clearing Memory to Factory Default ............. 148
GPS - GPS CDU Troubleshooting
........................................... 149
GPS3 - Visible Satellite Information
.............................. 149
GPS4 - GPS Position Uncertainty
.................................. 149
Antenna Reset Tools
...................................................150
Appendix C - Multiple Unit Control (Via LAN)
.................. 151
Dual Control Conguration:
................................................. 151
Turning Master or Slave Units Off
......................................... 152
Backup Receiver Integrity Monitoring (BRIM)
......................... 152
Multiple Unit Control Conguration
................................ 152
Appendix D - Demonstration Mode
.................................... 155
Appendix E - AIS connection for MX512 only
.................... 157
Introduction
.............................................................. 157
Ship-to-Ship Data Exchange
........................................ 157
Coastal Surveillance
................................................... 158
Vessel Trafc Systems
................................................ 158
AIS Communications Scheme
....................................... 159
AIS Message
.............................................................. 160
MX512/AIS the Total Shipboard GPS/DGPS/AIS Solution
.. 162
AIS System Setup
.............................................................. 162
AIS Cong Setup
........................................................ 162
AIS Static ......................................................................... 163
Conguring the AIS Voyage
................................................. 166
AIS Function Key
................................................................ 168
AIS 1 – OWN SHIP DATA
..................................................... 168
AIS 2 - Remote Ship List
..................................................... 170
AIS 3 - RECEIVED (RX) SAFETY MESSAGES........................... 171
AIS 4 - TRANSMIT (TX) SAFETY MESSAGE
............................ 171
AIS 5 - TX Safety List
........................................................ 172
AIS 6 - REGIONAL AREAS
................................................... 173
AIS 7- LONG RANGE (LR) DISPLAY
....................................... 174
AIS 9 – AIS STATUS
........................................................... 176
AIS11 – Security Log
.......................................................... 176
AIS12 - Remote Ship EPFS
.................................................. 176
AIS13 - Remote Ship Data
................................................... 177
PLOT 3 – AIS Plot Screen
.................................................... 177
Automatic Identication System Installation Section
....... 178
Compass Diagram
...................................................... 179
Appendix F - Glossary
....................................................... 185
10 | Contents
Blank page
About GPS Navigation | 11
1 About GPS Navigation
This GPS receiver is a precision navigation instrument utilizing the latest technology
available today to provide optimum performance from the GPS satellite and Beacon
land signals received. As with all other forms of radio signals, the ultimate navigation
result is dependent upon the quality of these signals. Radio signals may, on occasion,
be distorted, jammed, or otherwise incorrect. As a result, your position accuracy may
occasionally be less than that which can normally be expected.
The Navstar Global Positioning System, commonly referred to as GPS, is a satel lite
navigation system developed by the U.S. Department of Defense to provide both military
and civilian users with highly accurate, worldwide, three dimensional navigation and
time. By receiving signals from orbiting GPS satellites, authorized users are able to
continuously navigate with an accuracy on the order of 5 meters 2D RMS or better
A technique referred to as Differential GPS (DGPS), allows users to obtain maximum
accuracy from the GPS system. DGPS requires the use of two GPS receivers. One
receiver, known as the Reference Station, is placed at a surveyed location, the
coordinates of which are precisely known. The purpose of the differential GPS system
is to use the reference station to measure the errors in the GPS signals and to compute
corrections to remove the errors. The corrections are then communicated in real-time
to the navigators, where they are combined with the satellite signals received by the
navigators, thereby improving their navigation or positioning. The geographic validity of
these corrections decreases with distance from the reference station, but the corrections
are valid for navigators hundreds of kilometers from the reference station.
Marine radio beacons operating in the 283.5 to 325.0 KHz frequency range are in
widespread use for direction finding in coastal navigation. Because the beacon system
has been in place and widely used for many years, it provides an effective means for
the transmission of DGPS signals. Depending on their local environment and power
output, their signals may be usable to several hundred miles. Marine beacons provide an
economical means of obtaining DGPS accuracy for coastal navigators. GPS receivers with
built-in beacon receivers are designed to provide low cost reception of DGPS corrections
broadcast (normally free of charge) by coastal authorities.
Special notes
GPS
Never rely solely on any single navigational aid. Always use whatever information is
available, and cross-check information when possible. GPS expected position accuracy is
better than 30 meters (95% of the time) but may be up to 100 meters occasionally. The
derived speed and course readings may be hampered accordingly. The GPS system was
declared operational in 1994; however, the system’s availability and accuracy are subject
to change at the discretion of the US Department of Defense.
DGPS
This GPS receiver’s position accuracy is improved to 1 meter or better for 95% of the time,
subject to the availability, accuracy, and control of the DGPS correction transmission from
the Beacon Station.
The beacon radio signal which carries the DGPS corrections may be hampered by weather
conditions such as heavy rain, snow, and thunder storms. The beacon radio signal may
also be interrupted by powerful radio transmitters operating in long wavelength bands.
Charts and Navigational Aids
Positions obtained from charts are not always as accurate as your navigator (due to
environmental changes, the dates of charts, and datum offsets if the datum differs from
the one in use by the navigator). The position of a floating aid can differ due to tide, set
and drift
Compass Safe Distance
1 meter.
12 | About GPS Navigation
Blank page
Functional description | 13
2 Functional Description
The MX510 and MX512 Navigation CDU models are generally described in this manual as
MX51x Control and Display Unit (CDU). Their general operating features are identical and
will be described in common details in this manual. Specific model number will be called
in areas where they differ from one another.
CDU Congurations
The MX510 and MX512 Navigation System is available in several configurations. Please
refer to the Auxiliary Unit Information section of the manual to view sample screens to
identify your particular model. Described below are the various configurations and their
differences.
Basic CDU conguration
The MX510 has two (2) bidirectional user NMEA ports while the MX512 has nine (9)
bidirectional user NMEA ports. Both models have one (1) high-speed Local Area Network
(LAN) port and two USB ports. The basic GPS navigation model includes the CDU and a
smart GPS antenna
Basic MX510/512 GPS Configuration
MX51x DGPS
The MX51x DGPS model is supplied with a smart DGPS antenna with built-in Beacon
receiver (MX521A B-10 DGPS). The smart DGPS antenna unit can achieve better than 1
meter accuracy in areas with good beacon differential coverage.
Basic MX51x DGPS Configuration
MX51x/BR
The MX51x/BR configuration is a dual-control system where two MX51x (one operating
as a master and the other as a slave) is supplied. Only one MX521A smart DGPS
antenna is required. The antenna unit is connected only to the master unit. The two
MX51x CDUs communicate via the high-speed LAN port.
LAN port must be setup before enabling this feature. The units can be connected
together using an ethernet crossover cable (when connected directly) or through a hub/
switch/router. See section 4 of this manual for setup details.
14 | Functional description
MX51x BR Beacon and Remote Configuration
MX51x/BRIM (Backup Receiver Integrity Monitor)
The MX51x/BRIM is an enhanced Dual-Control configuration wherein two MX51x CDUs
and two MX521A smart DGPS antennas are supplied. The two MX51x units are connected
in dual-control configuration but they operate as independent navigator units with
dedicated antennas. The Integrity Monitoring (IM) feature is a software option that
works in the MX51x CDU hardware.
This configuration allows data to be shared between two remotely separated stations
(i.e. navigator’s station and helmsman’s station), with independent access to various
information fields. The purpose of this configuration is to enable each CDU to calculate
its own position, then check the operational status of the other GPS receiver. The GPS
receiver with the best overall operational status provides the system position. This is a
fully redundant system, with self-recovery capabilities. The Integrity Monitor function
can be set to Automatic switch over or forced to the any of the units for position and
navigation functions.
LAN port must be setup before enabling the IM feature. The units can be connected over
an ethernet crossover cable or through a hub/switch/router. See section 4 of this manual
for setup details.
MX51x/BRIM System Configuration
MX51x/MUC (Multi Unit Control)
The MX51x/MUC is a configuration wherein three or more MX51x units are networked
together using a hub or a router switch. In a MUC network one unit is assigned as a
master unit and the rest are either slaves or repeaters. Slave units are able to display
navigation data and control the master unit remotely while the repeaters can only
display navigation data. A maximum of five MX51x units can be a member of the MUC
network, one master unit, one or two slaves and the rest as repeaters. Please refer to
the installation notes section of this manual for the MUC diagram.
1) In general, this manual will refer to all versions of this product line simply as the
MX51x CDU, CDU or navigator. Where distinction between models is necessary, the
particular model type will be indicated.
2) Four MX Smart antenna models are compatible with the MX51x CDU. They are the
MX421-10 (GPS or DGPS), MX525A (DGPS only), MX521A (GPS or DGPS ) and MX575A
DGPS Compass.
DGPS Beacon System | 15
3 DGPS Beacon System
As Maritime Safety Administrations, Navy, and Coast Guard Organizations realize the
limitations of standard GPS positioning, many have begun installing DGPS Beacon
Stations. While an understanding of this system is not necessary for operating receivers
with internal beacon receivers, you may want to read on to have a better understanding
of how your receiver is capable of achieving the high levels of accuracy made possible by
this network of transmitters.
The DGPS Beacon System is comprised of three segments: the reference station,
Integrity Monitor (IM) equipment located at the beacon site, and the Navigator
equipment located on board the user’s boat or vehicle. The DGPS beacon system design
is illustrated below.
Because of the limited range of the beacon transmitters, typically 150 to 400 km, the
corrections generated by the reference station are always valid for users who can
receive the correction signals and maintain a 5 meter or better accuracy figure.
16 | DGPS Beacon System
Blank page
Keypad & Display Description | 17
4 Keypad & Display Description
The MX510 and MX512 keypad operation and traffic light indications are identical. The Traffic
Lights on the right side of the display will tell you how your navigator is operating.
You need to take care in reading the trafc light indications, as there are overlapping
possibilities between the GPS and DGPS modes. If you are unsure of the current
operating mode, select the CFG function key and scroll down to the DGPS selection. If
the DGPS mode is selected to anything other than Off, then follow the Differential GPS
Trafc Light Operation. If the DGPS mode is selected to Off, then follow the GPS Trafc
Light Operation.
Differential GPS Trafc Light Operation:
Red Flashing
Not tracking satellites (no position update). This is normal for the first 2 minutes or
so when turning the unit on. The very first time you turn the unit on, or if the memory
is reset or lost, this condition is also normal. Allow the receiver to run for at least 20
minutes under these circumstances. If it still does not change to Red Solid, refer to the
troubleshooting section in the page 110 of this manual. An icon similar to the one at left
will be displayed in the upper left corner of screen.
Red/Yellow Solid
Dead Reckoning . When normal GPS or DGPS operation is not available, this LED sequence
is provided to quickly identify the DR navigation mode. A DR indicator is also displayed on
all screens.
Red Solid
Tracking one or more satellites (no position update). This is also normal for the first 2
minutes or so when turning the unit on. The very first time you turn the unit on, allow
the receiver to run for at least 20 minutes after changing to Red Solid to collect an
almanac from the satellites, regardless of whether a position fix has been calculated
or not. This is also a normal indication if the HDOP is greater than 10, if the receiver
is tracking too few satellites, or for other reasons as well. Read the GPS and DGPS
function screens for more information.
18 | Keypad & Display Description
Yellow/Green Solid
GPS position update; DGPS corrections are not being received. You may see this
from time to time during normal operation. It usually occurs when the beacon signal is
not available (either it is being blocked by terrain or a local object or you are out of range
of the transmitter) and/or you are tracking 3, 4, or 5 satellites, and the satellites have
poor geometry relative to your position. The condition will normally go back to green
solid, when it picks up another beacon station. The factory default level for dropping
DGPS corrections is 600 seconds. During this period, your positioning information maybe
less than optimal, and position accuracy may be off by as much as 5 meters. Press the
GPS function key and refer to the DGPS section in this manual for guidance if this light
condition occurs.
Yellow Solid
DGPS position update with poor HDOP value. You may see this from time to time
during normal operation. It usually occurs when you are tracking 3, 4, or 5 satellites, and
the satellites have poor geometry relative to your position. The condition will normally
go back to Green Solid when it picks up another satellite or the geometry of the existing
satellites improves. The factory default level for this indication is with an HDOP of 4 to 10.
During this period, your positioning information is less than optimal, and position accuracy
may be off by as much as 5 to 10 meters. You can press the GPS function key and refer to
the GPS section in this manual for guidance if this light condition occurs.
Green Solid
DGPS position update with HDOP value less than 4. This is the normal operating
condition. Position accuracy is normally better than 3 meters. Keep in mind that position
accuracy is only as good as the corrections received, their age, your distance from the
reference station, and the geometry of the satellites. This is the normal operating condition
and no icon will be displayed.
GPS Trafc Light Operation:
Red Flashing
Not tracking satellites (no position update). This is normal for the first 2 minutes or so
when turning the unit on. The very first time you turn the unit on, or if the memory is reset
or lost, this condition is also normal. Allow the receiver to run for at least 30 minutes under
these circumstances. If it still does not change to Red Solid, refer to the troubleshooting
section in the page 110 of this manual. An icon similar to the one at left will be displayed
in the upper left corner of the screen.
Red/Yellow Solid
Dead Reckoning . When normal GPS or DGPS operation is not available, this LED sequence
is provided to quickly identify the DR navigation mode. A DR indicator is also displayed on
all screens in the upper left hand corner of the display.
Red Solid
Tracking one or more satellites (no position update). This is also normal for the
first 2 minutes or so when turning the unit on. The very first time you turn the unit on,
allow the receiver to run for at least 20 minutes after changing to Red Solid to collect an
almanac from the satellites, regardless of whether a position update has been calculated
or not. This is also a normal indication if the HDOP is greater than 10. The HDOP value
can be read in the GPS function screens.
Yellow Solid
GPS position update has a poor HDOP value. You may see this from time to time
during normal operation. It usually occurs when you are tracking 3, 4, or 5 satellites,
and the satellites have poor geometry relative to your position. If you are patient, the
condition will normally go back to Green Solid when you pick up another satellite or the
geometry of the existing satellites improves. The factory default level for this indication
is with an HDOP of 4 to 10. During this period, your positioning information is less than
optimal, and position accuracy may be off by as much as 10 to 30 meters. You can press
the GPS function key and refer to the GPS section in this manual for guidance if this light
condition occurs.
Keypad & Display Description | 19
Green Solid
GPS position update with HDOP value less than 4. This is the normal operating
condition. Position accuracy is normally between 3 to 5 meters, but can be out as
much as 30 meters. Keep in mind that position accuracy is always only as good as the
geometry of the satellites and the navigation information provided by the satellites. This
is the normal operating condition and no icon will be displayed.
The Display:
The MX51x uses a 6.4” monochrome quarter VGA LCD display. It provides optimum
viewing in virtually all angles and lighting conditions. To change the display contrast or
backlight condition, select the CFG function key and scroll down to the Lighting menu
choice. Refer to the CFG section of the manual for a complete description of menu
options. The
DAY/NIGHT dual function key allows you to quickly change between day
or night time screen viewing.
Information displayed on the screen is normally divided into windows, similar to what
you might see on a normal computer. Each screen has a page number located in the
upper left hand corner (i.e.
). These page numbers are there to help you find
the information you need, and to help us guide you on the rare occasion that you might
request our assistance.
With the exception of a portion of the PLOT and MOB screens which use the UP and
DOWN arrows to zoom in or out, all of the screens require that you press the EDIT (Edit
Mode) function key before you are allowed to change data on the screen. You can use the
cursor key (the big key with the arrows pointing in four directions) to move between edit
fields or menu choices on most screens when in the edit mode. When you are not in the
edit mode, you can use the cursor to scroll between screens (i.e. NAV1, NAV2, NAV3, ...)
or to move up and down on screens (like the menu bar in the CFG screen).
+ Virtual Softkeys:
The Edit key activates or deactivates the virtual softkeys and edit fields within any
screen where editing is appropriate. You will quickly learn that this is an important
operating feature in the unit. Press the EDIT key when you want to start editing a
screen and again when you have finished editing. If after editing you press a function
key and nothing seems to happen, check to make sure you didn’t accidentally alter your
information and press the EDIT key to end editing. Some edit screens provide an Escape
softkey. If you decide for some reason that you don’t want to use the changes you have
made, highlighting the Escape softkey and pressing the ENT key will restore the original
information. However, once you press the EDIT key, all changes are accepted and the
original data is lost.
The virtual softkeys at the bottom of the display are so named because their purpose
changes from one menu (or screen) to the next. All of the screens require that you
press the EDIT (Edit Mode) function key before the virtual softkeys can be accessed.
Then use the LEFT and RIGHT cursor arrows to highlight the desired virtual softkey and
press the ENT key (refer to pg. 21) to choose it. Don’t forget to press the EDIT function
key when you have finished to exit.
20 | Keypad & Display Description
The Function Keys:
The MX51x has 17 function keys. These keys are used to directly access various
navigation, positioning, GPS, configuration and other screens. One function key is
used to mark your present position, and to activate the Man-Over-Board feature when
depressed for a few seconds.
The ten function keys with alphanumeric designations are described in the following
chapters. The MARK/MOB keys and the GOTO keys are described below.
The function keys are also used in the edit mode to enter alphanumeric information for
route and waypoint names.
Programmable Keys (F1 to F4)
These keys are like the memory buttons in car radios. They can be programmed to
quickly bring-up a particular screen that you use all the time. To memorize a particular
screen, all you need to do is first select the desired display using the regular function
keys, then press and hold the F1 (or another F# key) for about 3 seconds until a series
of short beeps is sounded. The function key is now programmed. The next time you
wish to bring up that particular screen, just press the F# key momentarily. You may
reprogram any F# key at will.
Mark / MOB Key
This dual function key when pressed momentarily marks your present position and
stores it at the next available waypoint location in the waypoint bank. A window pops up
on the screen to confirm your key depression, and to tell you where the mark position
is being stored. You can go into the WPT menu and edit the coordinates or description
later. The CDU is also capable of performing this function from a remote contact closure
input via the AUX Cable (MOB/Event) wire. Refer to section 5 - Installation section of this
manual for interface instructions.
When depressed for 3 seconds, this function key activates a number of automatic MOB
functions:
Most obviously, it brings up an
- MOB1 plot screen. This is an automatic scaling
screen which selects the best zoom level to display your present position and the
MOB position. In addition, the MOB position is displayed in the upper left corner, so
that you can quickly read the coordinates to others who may be available to render
assistance. This plot screen also provides the range and bearing back to the MOB
position, as well as your present course over ground.
The MOB position, date and time are stored in the Waypoint Bank for future
reference (e.g. log book entries).
Navigation data output on the NMEA ports (i.e. BWC and BWR), are changed to
reflect the current urgent situation. This way, other interfaced equipment can also
help guide you back to the MOB position. When the MOB condition is canceled via
a MOB screen softkey, the NMEA sentences will automatically revert to the active
route information. Don’t forget to cancel the MOB so your interfaced equipment
will read the correct data!
The MOB function key and remote MOB input are disabled from subsequent
activation, until the MOB Cancel softkey is selected.
Other functions such as Position and Navigate can still be accessed; however, the
screen will revert to the MOB Plot screen after 30 seconds. Bearing and distance
information in these other screens relate to the MOB position, not the next
waypoint in the active route, until MOB is canceled.
To cancel a MOB condition, make sure you are in the MOB Plot screen. Press the EDIT
function key, then press the ENT key to select the Cancel MOB softkey.
The MX51x CDU is also capable of performing the MOB function from a remote switch. If
the switch is pressed for less than 2 seconds, the action is registered as a Mark Position.
If the switch is pressed for 3 seconds, the MOB function is activated. Refer to the
Installation section of this manual for interface instructions.
Keypad & Display Description | 21
GOTO
This function key allows you to quickly create a route from your present position to
waypoint or a route. This single waypoint route can use an existing waypoint from
the Waypoint Bank, or you can quickly create one by either defining the appropriate
coordinates or specifying a range and bearing.
Be careful when you use this selection, as it will erase your current active route when it
creates the new one. Read through the ROUTE and PLOT sections of this manual to find
other ways to use this key within an active route.
POWER ON/OFF
This DUAL function key turns the unit on and off. When depressed momentarily while
the unit is on, you will be prompted to select a YES or NO softkey to confirm your action.
This is known as a software power off.
If the operating program should hang up for any reason, you can also perform a
hardware power off by pressing the power key for about 5 seconds. When the GPS is
turned off using this technique, you can not reapply power for 10 seconds.
An occasion may arise when you need to reset the memory back to the factory default
values. Doing this will cause the CDU to lose all of your dened settings, as well as all
2,000 of your waypoints and routes. If you hold down the “CLR” button when power is
applied for about six seconds, then the memory will be cleared.
CLR (CLEAR)
This function key is probably the least used of all the function keys; however, it can save
you some otherwise frustrating editing time. This key allows you to erase or clear one
character at a time. If you hold it down, it will erase the entire line that the cursor is
currently on.
Holding this button down for 6 seconds will clear the entire memory of the MX51x CDU.
CURSOR
This function key is the most used of all the function keys. When pressing the EDIT key
to activate the virtual softkeys, the LEFT and RIGHT arrow cursor keys are used to scroll
left and right from one softkey to the next. It also allows you to move between function
screen pages (by pressing left or right). In addition, many of the edit fields allow you to use
either the cursor key or the Change softkey to scroll through or select from predetermined
choices.
ENTER
This key is often used just like the EDIT and the CURSOR keys. When pressing the EDIT
key to activate the softkeys, the ENT key is used to select the particular virtual softkey of
user’s choice.
DAY/NIGHT View
Press this key to toggle between night or day view.
When depressed for a few seconds, this dual function key allows you to quickly switch
between two predetermined display lighting conditions, day or night time settings.
You may also control the day/night view using the CFG => Lighting menu.
22 | Keypad & Display Description
FUNCTION Keys
You might have noticed that above and below each primary function key are numbers
and letters. These numbers and letters are used when you are in the edit mode. You will
find that they are most often used in the RTE, WPT, and CFG screens, but they are used
in other screens as well. If you are trying to enter text, simply locate the desired letter
and press the appropriate function key repeatedly until the appropriate letter or number
appears. If you accidentally go past the desired letter, repeat pressing the function
key and the letter will come up again. You can toggle between upper and lower case
characters by pressing the function key for a long period.
You will also find that some screens allow you to input symbols into the text fields. These
symbols are selected through a softkey selection where symbols are allowed. Don’t
forget to press the ‘EDIT’ key to get out of the edit mode.
Another helpful feature on this CDU is that successive depressions on the function key
(when not in the edit mode) allows you to page through all of the screens available for
that particular function. You can accomplish the same thing by selecting a function
and using the left and right arrows on the cursor key (which is sometimes faster). In
addition, the software remembers which screen you used last for each function. Each
time you reenter a function (e.g. you go from PLOT to NAV), you will enter the last
screen you viewed for that function. You can change this setting in the CFG 1 Operation.
Use the associated function key to access the international character desired (i.e. A for
Æ). The international characters supported are:
ABC = Ä, Å, Æ, À, Ç
DEF = É, È
GHI = Í
MNO = Ñ, Ó, Ö
STU = Ú, Ü
Use the CFG key when in the edit mode to cycle through these other optional characters.
‘ “ $ & ! ( ) ? / + - ° . , :
Automatic Identication System (AIS)
This is a special function key used for diplaying AIS related data. TThe AIS feature is a
licensed option in the MX512 model. Contact your dealer or NAVICO to purchase the
AIS license.
When this key is pressed, the message “AIS Not Available on this Version” will be
displayed.
Navigate
There are six NAV screens. NAV1 through NAV3 are primary navigation screens. NAV4,
NAV5, and NAV6 only provides data if appropriate sensors (e.g. wind speed/direction
logs, NMEA compass, etc.) are interfaced and activated on the CDU. The NAV functions
are highly interactive with the RTE1 screen, and a number of CFG menu selections.
The RTE1 screen provides the active route for the NAV screens. It also maintains a
waypoint pass log for you. One other important feature in the RTE1 screen that you
need to be aware of is that the up and down arrow softkeys control which waypoints are
skipped (down arrow) and which are restored (up arrow) for your current route. The ETA
information is configured in the RTE 1 screen. Refer to the Route section of the manual
for a full description.
The following CFG menus directly impact the NAV functions:
COG SOG - sets the filtering time for the displayed values.
•
Datum - sets the reference datum for your present position and waypoints in the
•
active route. WGS84 is the preferred Datum for most navigation calculation including
AIS.
Keypad & Display Description | 23
GPS Offset - sets an offset for calculating the GPS antenna position if you can’t •
physically locate the antenna exactly where you want it (e.g. over the centerline of
the boat).
Navigation - sets a variety of important functions and alarms
•
Rhumb line or Great Circle navigation
Range units: nautical miles, nautical miles and meters (when under 1000 meters),
nautical miles and feet (when under 1000 feet), statute miles, statute miles and
meters (when under 1000 meters), statute miles and feet (when under 1000 feet),
kilometers, or kilometers and meters (when under 1000 meters)
Cross-track error limit and alarm control
Waypoint pass criterion and distance: bisector line, perpendicular line, complex
(combination of bisector line and perpendicular line), distance to waypoint, or
manual
Waypoint Approach distance
Autopilot alarm control
Position - sets to either Lat/Lon or UTM, and some alarm limits. There is an
optional software package available to setup a user grid as well. The option is
explained in the Position, and CFG Position sections of this manual.
Time - sets appropriate offsets, and 12 or 24 hour clock mode.
Various NMEA input controls for sensors (i.e. speed log, wind instruments, etc).
-
You may have figured out by now that you will need to pay close attention to the
configuration screens. The good news is that you probably have to setup the CDU one
time and you can save the configuration data in a USB memory stick (or flash RAM) for
future use. The memory stick will allow you to easily restore or clone another MX51x to
your special configuration.
Dead Reckoning
The MX51x CDU is capable of Dead Reckoning (DR) calculation when appropriate
compass/heading and speed log sensors are connected and activated. Refer to the NAV4
and CFG sections of this document.
When the CDU is in the DR mode a DR icon is displayed in the upper right corner of the
screen.
NAV1 - The Panorama Screen
This screen is designed to give you a unique 3 dimensional look at the active route you
are to follow. It is typically referred to as a runway view because you can see navigation
markers, your course line, the cross-track error lines, and waypoint flags as you pass
them. Take a look at the example below.
If you don’t see the information described in this screen, you will need to create a route
in RTE1 screen first.
The somewhat triangular shape at the bottom center of the screen represents the bow
of the boat. Icons on the screen are always related to this object. The two dash lines
extending from the bottom of the screen towards the center of the screen represent your
cross-track error limits. The dotted line extending from the bow of the boat icon represents
your course line. The course line changes direction at the flags, which represent your
waypoints, and continues through to the end of the active route you entered in RTE1.
Notice that the cross-track error lines end at the first flag. As you pass the flag and start
the next leg of your course, these lines will be redrawn to reflect the course change. Icons
that you see left and right of your course are navigation markers that you define in the
24 | Keypad & Display Description
Waypoint Bank (WPT1) where a symbol is used as the first character of the waypoint
description. The Panorama and Plot screens will automatically place these navigation
markers on the screen as you approach them.
The degree values that you see are your Course Over Ground (COG), as calculated by the
GPS receiver’s position fix to position fix, and Bearing (BRG) from your present position
to the waypoint. The speed value is your Speed Over Ground (SOG) as calculated by the
GPS. The distance value displayed as the Range (RNG) is calculated from your present
position to the waypoint. The Time-To-Go (TTG) is the calculated time it will take you to
reach the waypoint, based on your Waypoint Closure Velocity (see NAV4 description).
To keep the screen from jumping around when you are stopped, the screen freezes the
graphic representation when your speed is under 0.5 Kn in DGPS mode or 2.0 Kn in GPS
mode. Once you get underway, your course details will update appropriately.
You will see a RL or GC symbol in the upper right corner of the display indicating whether
you are navigating under Rhumb Line or Great Circle. This is set in the CFG Navigate
menu.
If you press the EDIT key, the Panorama Display Option screen will allow you to customize
the information presented.
View
• - allows you to adjust the display for a Close (zoomed-in) or a Far (zoomed-out)
representation of your route.
Show Waypoints
• - allows you to turn waypoints which are not part of the active route
on and off.
Show Active Route
• - allows you to turn the course line on or off on the display
(assuming a symbol is entered for the first character of the waypoint name).
Show Off Track Limit
• - allows you to turn the cross-track error limit lines on or off on
the display.
Show Data Window
• - allows you to select between the two NAV 1 display types
depicted at the beginning of this section, one in which the data is displayed in various
parts of the graphic screen, the other in which the data is displayed in a separate
window to the left of the graphic screen.
If you drift outside of your cross-track error limit and you decide not to return to your
original course line, you can reset your course line from your present position to the
waypoint by highlighting the Reset XTE softkey from the display, and pressing the ENT
key.
The Skip Waypoint softkey allows you to skip the waypoint you are presently going to, and
advance to the next waypoint. For example, if you were under way and nearing waypoint
5 and you decide you want to go on to waypoint 6 now, press the EDIT key, highlight the
Skip Waypoint softkey, and press the ENT key. If you make a mistake and you want to go
back (unskip) to waypoint 5, you can do this by the following:
Go into the
1 RTE1 screen.
Press
2 EDIT in the RTE1 screen.
Highlight the
3 Route Control softkey and press ENT.
Highlight the up arrow softkey (fourth from the left) and press
4 ENT once.
Press the
5 EDIT key again.
Refer to the Route section of this manual for more details about skipping and unskipping
waypoints.
Keypad & Display Description | 25
NAV2 - Basic Steering Information
The NAV2 screen provides the bearing (BRG) and range (RNG) to the waypoint you are
approaching in large bold characters. Below these, you will see your actual Course Over
Ground (COG) and Speed Over Ground (SOG). The bottom portion of the screen provides
cross-track error information. Again, if you don’t see the information described here on
your screen, you will need to create a route in RTE1 first (refer to the Route section of the
manual).
In the bottom half of the window, the vertical line in the center represents your course line.
The checkered area on the left and right side of this area represents the out of bounds or
beyond the cross-track error limit area. Whenever the boat is left or right of the course
line, the corresponding checkered area changes to solid black, indicating the side of the
course line that you are on. The number next to the course line is your calculated crosstrack error. The numbers in the lower left and right hand corners indicate the cross-track
limit you set in the CFG1 menu under Navigation. You will notice that the cross-track error
limit lines are slanted, just as they were in the Panorama screen. So if the boat is off to
the right of the course, and the bow is pointing straight up, you are actually traveling away
from the course line. Keep the bow pointed toward the top of the course line, and you
should be able to maintain your course without a lot of drift. The BRG and COG values will
confirm this for you, when executed properly.
From time to time, you might drift off course and decide not to return to your original
course line. If you drift outside of your cross-track error limit, you can reset your course
line from your present position to the waypoint by pressing the EDIT key and selecting
Reset XTE softkey then ENT. This will save your autopilot from having to work hard to get
you back on course. Press the EDIT key again to get back into normal display mode.
In addition, if you decide you want to skip this waypoint, and go on to the next one,
Press the EDIT key, and select the Skip Waypoint softkey then ENT. Press the EDIT key
to exit. If you skip one waypoint manually, and the CDU starts skipping more waypoints
by itself, you probably need to change your Waypoint Pass Criteria in the CFG1 Navigate
menu. Refer to the Route section of this manual for more details about skipping
waypoints.
Just as in NAV1, you will see an RL or GC symbol in the upper right corner of the display
indicating whether you are navigating under Rhumb Line or Great Circle. This is set in
the CFG1 Navigate menu.
NAV3 - Expanded Navigation Information
The NAV3 screen has four windows. The upper left window is a smaller version of NAV2
screen. Please read the previous section for a detailed description of this window. The
two windows below this one indicate the current date, time and the ETA to the end of
your route for the time zone currently entered. The date and time format is set in the
CFG1 Time menu. The ETA and TTG (in the right hand window) are filtered over time,
so allow the filtering to settle when you first make a course or speed change. The filter
time is controlled in the RTE1 ETA Setup screen. The Time-To-Go (TTG) value on the
bottom of the right hand window expands from HH:MM:SS to HHHH:MM:SS when the
time to go is greater than 99:59:59. Also, these values are calculated by using your
Waypoint Closure Velocity (WCV), not your SOG. WCV as described in short detail in the
26 | Keypad & Display Description
NAV4 section which follows.
You will find the right hand window to be a helpful tool. In addition to identifying the
waypoint you are currently approaching, it identifies the waypoint at the end of the next
leg. The really unique feature of this screen is the graphical representation of your
actual course line approach angle relative to the next leg of your course. This approach
angle is continuously updated in real time and will help you setup for course changes.
Reset XTE and Skip Waypoint, described at the end of NAV2 , is also available in NAV3.
NAV4 - Sensor Input Navigation
The NAV4 screen applies the wind instruments, speed log, compass, and depth sounder
inputs from external sensors to your active route, as appropriate. You can setup the
sensors in the CFG1 screen. Section 5 of this manual will guide you through the interfacing
capabilities of the CDU.
Use the following CFG1 menus to set this screen up:
Compass - Sets the input port number, compass type (Gyro, MX575 or Magnetic),
compass deviation table, and the input NMEA 0183 record from which to derive the
compass information. The NMEA 0183 record should be specified by the user, because
several NMEA 0183 records may contain compass information. This provides you the
capability of knowing the compass source exactly. The CDU only accepts NMEA 0183
formatted data for the compass input. Synchro or stepper gyro compasses are not
compatible.
Depth - Sets the input port number, units of measure for depths and tide data, sensor
offset, alarms, and the input NMEA 0183 record from which to derive the depth
information. The NMEA 0183 record should be specified by the user, because several
NMEA 0183 records may contain depth information. This provides you the capability
of knowing the depth source exactly.
Log - Sets the input port number, sensor type (pulse or NMEA 0183), alarms, and a
correction factor (if needed).
Set & Drift - automatically calculated based on GPS derived values.
Wind - Sets the input port number, units of measure, sensor offset, alarms, and the
input NMEA 0183 record from which to derive the wind information. The NMEA 0183
record should be specified by the user, because several NMEA 0183 records may
contain wind information. This provides you the capability of knowing the wind source
exactly.
This screen is divided into four windows. The window on the top left provides details
relating to the True Wind Angle (TWA), True Wind Speed (TWS) and True Wind Direction
(TWD), which are taken from the NMEA 0183 record of MWV or VWR. If the wind
information is given in relative terms, the CDU calculates true values using available GPS
course and speed information to make the necessary adjustments. Refer to the Glossary
for definitions on Apparent/True Wind Angle/Speed/Direction. To the right of the wind
information is your Velocity Made Good (VMG) towards the waypoint. The VMG data is
filtered to show the average speed from the last waypoint to your present position towards
the next waypoint. VMG is calculated from GPS data. The CDU will also use the above
Keypad & Display Description | 27
data to calculate your speed parallel to wind and can output the VPW NMEA 0183 data
sentence to other on-board instruments.
The window below the wind data provides information relating to your course and speed.
You will find the Course Over Ground (COG calculated by the MX421 smart GPS antenna),
Heading (HDG, your NMEA 0183 compass input), and Heading To Steer (HTS) data on
the left side of the window. HTS data is calculated by considering your Heading, minus
COG and adding BRG to the waypoint. In doing so, the software considers any Set to be
included in the HDG value. If there is no Set, your HDG should be equal to COG. Set
and Drift is calculated from GPS and your Speed Log (NMEA 0183 VHW record or Pulse
input) and Compass (NMEA 0183 HDM, HDT, or VHW) input or an operator manual input.
On the right side of the lower left window you will find the Speed Over Ground (SOG,
calculated by MX421 smart GPS antenna), Speed Log (LOG, the NMEA 0183 or pulse
speed input), and the Waypoint Closure Velocity (WCV). WCV reflects the real time
velocity from your present position and course towards the next waypoint. The VMG
and WCV are calculated from GPS data. Refer to the diagram below to see a graphical
representation between VMG and WCV.
Present
Position
SOG 13 Kn
Beginning
Waypoint
Next
Waypoint
Original Course Line
Actual
Course
Line
VMG
Towards
Waypoint
10
Kn
BRG
Effect of
Set & Drift
6297_01B.100
Present
Position
SOG 13 Kn
WCV 9 Kn
Beginning
Waypoint
Next
Waypoint
Original Course Line
BRG
&
RNG
Extended
Course
Line
WCV is based on
Extended Course
Line (COG), SOG,
BRG & RNG to WPT
Effect of Set & Drift
HTS to
counter
Set & Drift
Velocity Made Good:
Distance to
Waypoint Travelled
Waypoint Closure Velocity:
Below this information, you will find your Set and Drift data, which is calculated using GPS
and your compass and speed sensor inputs.
Reset XTE and Skip Waypoint, described at the end of NAV2, is also available in NAV4.
The window on the right displays depth information coming from the depth sounder unit
using the NMEA 0183 record of DPT, DBS, DBT, or DBK. These are setup in the CFG1
Depth screen, refer to the Configuration section of this manual for full details on depth
data.
Below the depth data you will find the next route leg vector, the Range to the waypoint
and Time To Go data, explained in the NAV3 section.
28 | Keypad & Display Description
NAV5 - Compass Display Screen
The NAV5 screen displays the Heading and Rate of Turn values of the MX575 Satellite
Compass (or Gyro) in digital and compass row formats. In addition, it also displays the
position, COG, SOG, BRG, and RNG. This screen can be accessed by pressing the NAV
key repeatedly until you reach the desired NAV screen.
NAV6 - Compass Display Screen
The NAV6 screen displays the Heading and Rate of Turn of the MX575 in large digital and
tape measure style readouts. In addition, it also displays the Set and Drift. This screen
can be accessed by pressing the NAV key repeatedly until you reach the desired NAV
screen.
The NAV1 - NAV5 screens are not active until the antenna is detected.
Route
There are two RTE screens. The NAV functions are highly interactive with the RTE1
screen. The RTE2 screen allows you to create a pool of predetermined routes that you
might use often, so you need only create the route one time. Routes are created from
waypoints. All waypoints are stored in the Waypoint Bank, regardless of which function
is used to create them. Waypoints are either created in the Waypoint Bank (WPT1),
created by the GOTO function, selected from the PLOT screens in conjunction with the
GOTO function, or from New Waypoints that can be defined in the Route Insert menu
(and simultaneously stored in the route and the Waypoint Bank).
We recognize the diverse needs of professional users. We have designed the route
features to be very flexible to meet a wide range of users’ requirements by allowing
up to 2000 waypoints to be stored between all of the routes. You can create up to
99 routes, with any number of waypoints, providing the maximum number of 2000
waypoints between all routes is not exceeded.
The Route (RTE) function serves two purposes:
The RTE1 screen provides all of the current, or active waypoint navigation data to
1
the Navigate and Plot screens and is referred to as the Active Route. Therefore,
whenever you begin a new trip or voyage, you should erase the previous voyage’s
waypoints in this screen, then insert the new waypoints or routes (from RTE2)
for the new voyage. If you want to store the waypoints from the previous active
route for future use, you can copy these waypoints in the order in which they were
entered to the Route Bank in the RTE2 screen. This is described in the RTE2 - The
Route Bank section of this manual. If you do not clear the RTE1 screen (refer to
Erasing an Existing Route section of this manual), the RTE1 screen will grow each
time you add new waypoints to the route. The route function can hold a maximum
of 2,000 waypoints between the routes stored in RTE1 and RTE2.
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