Lowrance 12, GlobalNav 12 Installation And Operation Instructions Manual

INSTALLATION AND

OPERATION INSTRUCTIONS

GlobalNav 12

TM

Copyright © 1998 Lowrance Electronics , Inc.
All rights reserved.

GlobalNav™ 12 is a trademark of Lowrance Electronics, Inc.
Lowrance® is a registered trademark of Lowrance Electronics, Inc.

W ARNING!
USE THIS UNIT ONLY AS AN AID T O NA VIGA TION. A CAREFUL NA VI­GATOR NEVER RELIES ON ONLY ONE METHOD TO OBTAIN POSI­TION INFORMATION.

Never use this product while operating a vehic le.

CAUTION

When showing navigation data to a position (w aypoint), this unit will show
the shortest, most direct path to the waypoint. It provides navigation data
to the wa ypoint regardless of obstructions. Therefore , the prudent naviga­tor will not only take advantage of all a vailable na vigation tools when trav­elling to a waypoint, but will also visually check to make certain a clear,
safe path to the waypoint is alwa ys available.

The operating and storage temperature f or your unit is from -4 degrees to
+167 degrees F ahrenheit (-20 to +75 degrees Celsius). Extended storage
temperatures higher or lower than specified will cause the liquid crystal
display to fail. Neither this type of failure nor its consequences are cov­ered by the warranty. F or more inf ormation, consult the factory customer
service department.

All features and specifications subject to change without notice.
Lowrance Electronics may find it necessar y to change or end our poli-

cies, regulations, and special off ers at any time. We reserve the right to do
so without notice.

All screens in this manual are simulated.

INTRODUCTION ............................................................................................................... 1

S/A - What is it? .......................................................................................................... 2

Don’t Get Lost ............................................................................................................. 2

GETTING STARTED ......................................................................................................... 3

Power .................................................................................................................... 3

BATTERIES................................................................................................................. 3

Battery Installation................................................................................................ 3

NiMH Battery ........................................................................................................ 3

External Antenna ........................................................................................................ 4

OPERATION .................................................................................................................... 4

Keyboard .................................................................................................................... 4

Menus .................................................................................................................... 4

Turning Power On ....................................................................................................... 5

Satellite Status Screen ............................................................................................... 5

Finding Y our Position................................................................................................... 6

Auto Search.......................................................................................................... 6

Quick Initialization ................................................................................................ 7

Full Initialization .................................................................................................... 7

Position Acquisition .............................................................................................. 8

POSITION/NAVIGATION SCREENS ......................................................................... 8

STATUS ................................................................................................................ 8

NAVIGATION ........................................................................................................ 8

PLOTTER ............................................................................................................. 8

WINDOWS ............................................................................................................ 8

Navigation Screens .............................................................................................. 9

Course Deviation Indicator (CDI)................................................................. 10

Plotter ................................................................................................................. 11

Cursor .......................................................................................................... 12

Plotter Options ............................................................................................. 12

Update Options ............................................................................................ 12

Plotter Orientation ........................................................................................ 13

Plot Trails...................................................................................................... 14

Clear Trail .................................................................................................. 14

Range Rings/Grid Lines............................................................................... 14

GRIDS .......................................................................................................... 14

ICONS .......................................................................................................... 15

Place Icon - Present Position ................................................................... 15

Place Icon - Cursor Position..................................................................... 16

Icon Options ............................................................................................. 16

WINDOWS.......................................................................................................... 17

Reprogram Boxes ............................................................................................... 22

RESET GROUPS ............................................................................................... 22

WAYPOINTS....................................................................................................... 23

Waypoint Menu ............................................................................................ 23

Saving Your Present Position as a Waypoint (Quick Save Method) ............ 23

Saving The Cursor Position as a Waypoint ................................................. 24

Saving Your Present Position as a Waypoint (Select Number Method) ...... 24

Selecting a Waypoint ................................................................................... 25

Waypoint Number ........................................................................................ 25

Waypoint List................................................................................................ 25

Nearest Waypoint......................................................................................... 25

Editing a Waypoint ....................................................................................... 25

Edit Name ................................................................................................. 26

Edit Position.............................................................................................. 26

Edit Icon.................................................................................................... 26

WAYPOINT NAVIGATION ......................................................................................... 27

Navigating to a cursor location........................................................................... 27

Navigating to a Waypoint using the Plotter ........................................................ 28

OTHER WAYPOINT OPTIONS .......................................................................... 28

Move a Waypoint.......................................................................................... 28

DISTANCE BETWEEN WAYPOINTS .......................................................... 29

Project a Waypoint ....................................................................................... 30

Position Averaging ....................................................................................... 31

Delete a Waypoint ........................................................................................ 31

Delete All Waypoints .................................................................................... 31

ROUTES .................................................................................................................. 31

Create a Route ................................................................................................... 32

Delete a Waypoint .............................................................................................. 33

Waypoint Detail................................................................................................... 33

Following a Route............................................................................................... 34

Delete a Route.................................................................................................... 35

CANCEL NAVIGATION ............................................................................................. 35

Navigation Notes....................................................................................................... 35

SYSTEM SETUP ...................................................................................................... 35

Backlight ............................................................................................................. 35

Contrast .............................................................................................................. 36

Units of Measure ................................................................................................ 36

NMEA / DGPS .................................................................................................... 36

NMEA Output ..................................................................................................... 37

Configure NMEA Output .................................................................................... 37

DGPS.................................................................................................................. 37

Serial Communication Setup.............................................................................. 39

Reset Options..................................................................................................... 39

Reset Groups ..................................................................................................... 39

System Info ......................................................................................................... 40

GPS SETUP ............................................................................................................. 40

Position Format .................................................................................................. 40

DATUM................................................................................................................ 41

PCF (Position Correction Factor) ....................................................................... 41

POSITION PINNING .......................................................................................... 42

ALARMS .................................................................................................................. 43

MESSAGES.............................................................................................................. 44

SUNRISE/SET MOONRISE/SET CALCULATOR.................................................... 44

SIMULATOR.............................................................................................................. 45

DEFINITION OF TERMS/ABBREVIATIONS ............................................................ 46

1

INTRODUCTION

Welcome to the e xciting world of GPS! Whether y ou’re a first-time user or
a professional navigator, you’ll find the GlobalNav 12 is a full-featured
GPS receiver at a price that was impossible just a few years ago. The
Rockwell® receiver built inside has 12 channels that will track all of the
satellites that are in view of your location. It’ s acquisition time and tracking
ability are second to none in its class.

The Global P ositioning System (GPS) was developed b y the United States
Department of Defense as a 24-hour a day, 365 days a year global navi­gation system for the military. Civilian availability was added with less
accuracy using the same satellites. Twenty-four satellites orbit the Earth.
Three of these satellites are spares, unused until needed. The rest virtu­ally guarantee that at least four satellites are in vie w of anyplace on Earth
at all times.

The system requires three satellites in order to determine a position. This
is called a 2D fix. It takes four satellites to determine both position and
elev ation, (your height abo v e sea le v el - also called altitude.) called a 3D
fix.

Remember, the unit must have a clear view of the satellites in order to
receiver their signals. Unlike radio or television, GPS works at very high
frequencies. The signals can be blocked easily by trees, buildings, even
your body. Fortunately, they do travel through glass and plastic, so your
receiver will work in the car , if it has a clear vie w of the satellites through
the windshield or side windows. Let someone else drive if you use it in a
car or other vehicle.

Never use this GPS receiver while operating a vehicle!

The first time you use this unit, walk outside and turn it on in your back­yard, an open field or park. Once it locks onto the satellites, you can ex­periment with it around buildings and trees. This will give you some idea
of its sensitivity to blockage .

Like most GPS receivers, this unit doesn’t have a compass or any other
navigation aid built inside . It relies solely on the signals from the satellites
to calculate a position. Speed, direction of travel, and distance are all
calculated from position information. Theref ore, in order f or it to determine
direction of travel, you must be moving and the faster, the better. This is
not to say that it w on’t work at walking speeds - it will. There will simply be
more “wandering” of the data sho wn on the displa y.

2

S/A - What is it?

Another factor that greatly influences the receiver’s ability to determine
position is SA. The United States government intentionally degrades the
satellites signal for civilian users. They introduce small errors into the
satellite’s signals that makes the GPS receiver less accurate. These er­rors are called selective av ailability , or SA. Ho w bad is it? They guarantee
that the position reported by a GPS receiver that meets their specifica­tions is within 100 meters horizontally and 150 meters vertically 95% of
the time. (The position can be better than that or worse than that the other
5% of the time.) In other words, the position shown on your receiver is
within 100 meters of your actual position, 95% of the time. That’ s over 300
feet! Not e xactly pinpoint accuracy, but then fe w people need positioning
accuracy greater than this. However, if you do want better performance,
(and who doesn’t?) many manufacturers (including Eagle) sell a DGPS
receiver that attaches to your GPS receiv er . The DGPS system transmits
correction signals that nullify the effects of SA. The DGPS receiver takes
signals from these land-based transmitters and gives them to the GPS
receiver which then uses them to show a more accurate position. The
ironic part is the federal government implemented SA and is also operat­ing many DGPS transmitters. (You can use the signals from all of the
Coast Guard DGPS stations for free, b y the wa y.) The downside to this is
it requires another piece of electronic gear (the DGPS receiver) which
usually isn’t small enough to carry with you, but will work nicely on a
vehicle. And you ha ve to be close enough to a station to receive the DGPS
signals.

Don’t Get Lost

Generally, you find that using your GPS receiver without DGPS is both
easy and amazingly accurate. It’s easily the most accurate method of
electronic navigation available to the general public today. Remember,
however that this receiver is only a tool. Always have another method of
navigation available, such as a chart or map and a compass. It’s a good
idea to carry spare batteries with you, especially if you’re venturing into
unknown territory .

Also remember that this unit will always show navigation information in
the shortest line from your present position to a waypoint, regardless of
terrain! It only calculates position, it can’t know what’s between you and
your camp , for example . It’ s up to y ou to safely navigate around obstacles ,
no matter how you’re using this product.

3

GETTING STARTED
P ower

The Expedition operates from four AA batteries, or one DURACELL®
NiMH rechargeable battery, or from 5 to 16 volts DC using the external
power cable. If the power cable is used, the Expedition automatically
switches to it if the e xternal power is greater than the battery voltage. If for
any reason the e xternal power fails, the unit automatically s witches to the
batteries.

BATTERIES

The unit requires four AA batteries. We recommend you use alkaline bat­teries for the best trade-off between battery life and cost. However, you
can use nickel-cadmium (ni-cad), or lithium batteries. You can also use
rechargeable alkaline batteries such as RayO V ac® Rene wals®. With the
exception of lithium, none of the abov e batteries will last as long as stan­dard alkaline batteries. We recommend DURACELL® brand, but others
will work. Do not use “heavy-duty” batteries or any type other than the
ones listed above. Do not mix different types of batteries. (For example,
don’t use both alkaline and ni-cad batteries at the same time.)

Battery Installation

First turn the unit so that its back is facing
you. Push the two tabs to the left and re­move the battery cov er as shown at right.
Install the batteries according to this dia­gram. (There’s a decal in the battery com­partment showing the correct polarity,
also.) Replace the battery compartment
cover and the unit is ready for use.

NiMH Battery

The DURACELL® DR-121 nickel-metal
hydride (NiMH) battery replaces the four
standard batteries. It is sold as an acces­sory , model BR-1 which includes a charger
custom designed for the DR-121. The bat­tery never needs to be remov ed from the
unit, since the charger connects to the
GPS receiver and charges the DR-121. You can even use the receiver
while the battery is charging!

To install the NiMH battery, remove the battery cover and place the bat­tery into the compartment as shown on the next page. It will only fit one
way, so if it’s difficult to install, simply turn it over and drop it into place.

4

Replace the compartment cover and follow
the charging instructions included with the
BR-1.

(Note: The DR-121 is the only battery that
can be recharged in this unit! Using the ex­ternal power cable alone does not charge the
battery! You must use a charger supplied by
Eagle in order to charge the battery . Also, this
charger will only charge a DR-121. It will not
charge any other type of battery , including ni­cads or rechargeable alkallines.)

External Antenna

Although this GPS receiver is e xtremely sen-
sitive, it can be used in locations where the
built-in antenna simply cannot receive signals from enough satellites. A
second connector on the back of the unit is f or an external antenna. The
Eagle model EA-2 antenna plugs directly into this connector. Other an-
tennas may work. If you use an antenna other than Eagle, it will need to
be a passive antenna. This unit does not supply po w er to the antenna.

OPERATION
Keyboar d

There are 12 keys on the k eyboard. Y ou na vi­gate through the menus, adjust the chart’s
cursor , and enter data using the arrow keys .
The five major modes of operation are ac­cessed using the PAGES key. Press the
MENU ke y to select or adjust a feature from
a list. The Z-IN and Z-OUT k e ys zoom-in or
zoom-out the view on the plotter screen. The
ENT and EXIT keys are used to enter or
clear data or screens. Save and edit way­points using the WPT key. The PWR key
turns the unit on and off. Pressing it once while the unit is operating turns
on the screen’s backlight. To prevent an accidental shutdown, you must
hold the PWR key do wn for a few seconds in order to turn the unit off.

Menus

Most of the unit’ s features are f ound on “menus’. You can view the menus
by pressing the MENU key. This product has “Intelligent Menus”. There
are many menus that pertain to only the plotter, for example. When you
press the MENU key and the plotter is sho wing, menu items for the plotter

P AGES WPT

MENU EXIT

ZOUT

ZIN ENT

PWR

5

show in addition to the normal menus. If the na vigation screen is showing,
and you press the MENU key, plotter menu items won’t show on the list.
This helps you find the item you need without scrolling through unneces­sary menus.

Turning Power On

T o turn the unit on, simply press the PWR k ey . A screen
similar to the one at right appears. Read the message
on the screen, then press the EXIT key to erase it or
wait a few seconds and it automatically clears. The
screen shown below appears ne xt.

Satellite Status Screen

This screen appears each time you turn the unit on. It
shows a graphical view of the satellites that are in vie w .
Each satellite is shown on the circular chart relative to
your position. The point in the center of the chart is
directly overhead. The small inner ring represents 45°
above the horizon and the large ring represents the
horizon. North is at the top of the screen. You can use
this to see which satellites are obstructed by obstacles
in your immediate area if you hold the unit f acing north.

The GPS receiver is tracking satellites that are sur­rounded by a blac k box. If the satellite number is not surrounded by a bo x,
then the receiver hasn’t lock ed onto that satellite and it isn’t being used to
solve the position.

Beneath the graph are the bar graphs, one for each satellite in view. Al­though the unit has twelve channels, it dedicates one channel per visib le
satellite. Therefore, if only six satellites are visible, only six bar charts
show at the bottom of the screen. The higher the bar on the graph, the
better the unit is receiving the signals from the satellite.

The number in the upper left corner is the “expected horizontal position
error” or e xpected error from a benchmark location. In other w ords, if the
expected error sho ws 50 feet, then the position sho wn by the unit is esti­mated to be within 50 feet of the actual location. How ev er , this n umber is
only valid if you’re using DGPS or if S/A is turned off. Due to S/A, the
accuracy can only be less than 100 meters, 95% of the time, per U.S.
gover nment specifications. Although the expected error is not accurate
unless you hav e a DGPS receiv er, it does give y ou an indicator of the fix

6

quality the unit currently has. The smaller the e xpected error number , the
better (and more accurate) the fix is.

If the expected error is flashing, then the unit has not locked onto the
satellites, and the number shown is not v alid.

A battery level indicator on the lower right side of the
screen shows the approximately how much life is in
the batteries. This runs from “F” (fully charged) to “E”
(expired).

A light bulb indicator at the top right corner of the screen
appears when the backlights are on.

You can press the EXIT key anytime to erase this
screen. This automatically s witches the unit to the last­used navigation, plotter , or windo w group screen.

Finding Y our Position
Auto Sear ch

To lock onto the satellites, the GPS receiver needs to know it’s current
position, local time, and date. (Elev ation (altitude) is also used in the equa­tion, but it’ s rarely required to determine a position.) It needs this data so
that it can calculate which satellites should be in view . It then searches for
only those satellites. When your GPS receiver is turned on for the first
time, it doesn’t know what your position or elevation (altitude) is. It does
know the current UTC time and date since these were progr ammed into it
at the factory and an internal clock keeps the time while the unit is turned
off. It begins searching for the satellites using the above data that it ac­quired the last time it was turned on. This probably was at the Eagle f ac­tory . Since it’ s almost certain that you’re not at the Eagle f actory , it’ s prob­ably looking f or the wrong satellites. If it doesn’t find the satellites it’s look­ing for after five minutes, it switches to the Quick Initiailization screen.
This lets you enter your location from a list of states and countries. If you
simply press the EXIT key while the Quick Initialization screen is show­ing, after a fe w min utes the unit begins to search f or an y satellite. This is
called “A uto Search”. Due to advanced technology, the auto search time
has shrunk to about five minutes, so the longest time you should ever
hav e to wait is ten minutes from the time you turn the unit on until it locks
onto the satellites and shows a position. Once the unit locks onto the
satellites, it should take less than a minute to find your position the next
time it’s turned on, provided you ha ven’t mo ved more than appro ximately
100 miles from the last location it was used.

7

Quick Initialization

If you don’t want to wait for the Auto Search, then you can speed up the
initialization process by using the “Quic k Initialization” f eature. To do this,
first turn the unit on, then press the MENU key. The screen shown at right
appears. Now press the down arrow key until the “GPS SETUP” label is
highlighted. Press the right arrow key . The “INIT GPS”
(Initialize GPS) label is highlighted. Press the right
arrow ke y .The Quick Initialization label is highlighted.
Press the right arrow key. The screen at right ap­pears. All of the states in America are listed, along
with most of the countries in the world. Using the up
or down arrow keys, highlight the state or country
that is closest to your location, then press the right
arrow ke y . The unit returns to the initialize GPS menu.
Press the EXIT key three more times to erase the
menus. The unit returns to the satellite status screen.

Using the quick initialization method loads a position that’ s close to yours
into the GPS receiver . It should now hav e position, time, and date, thereby
giving it the data it needs to determine which satellites are in view . Once
the satellites are known, the receiver searches for only those satellites,
making a lock much f aster than an auto search method.

Full Initialization

There are occasions when you will want or need to manually initializ e the
unit by entering the position, elevation, time, and date. To do this, press
the MENU key, Now press the down arrow key until the “GPS SETUP”
label is highlighted. Press the right arrow key. The “INIT GPS” (Initialize
GPS) label is highlighted. Press the right arrow key. Now highlight the
“FULL INIT” label and press the right arrow key. The
screen at right appears.

This is the full initialization screen. The position, alti­tude, time, and date the GPS receiver is currently us­ing to find the satellites shows at the bottom of the
screen. To update these settings to the current values,
simply highlight the desired label using the up or down
arrow keys, then press the right arrow key. The posi­tion label (see at the top of the next page) was se­lected in this example.

To change a number in the position, highlight it using the right arrow key,
then use the up or down arrow k ey to change its v alue. The left arro w key
acts as a backspace. When the position is correct, press the ENT key.

8

The unit returns to the full initialization screen.
Repeat this for each of the other settings until they’re

correct for your location and time. Note: The position
doesn’t have to be very accurate. If you enter a posi­tion within one degree of your actual location, the unit
will be able to acquire the proper satellites.

Press the EXIT key to er ase the full initialization menu.
The unit will use the data you entered to find the satel­lites that are currently in view. The receiver should lock onto them and
show a position within a fe w minutes .

Position Acquisition

When the receiver loc ks onto and calculates a position, it shows the mes­sage “Position Acquired” on the screen. All position and navigation data
flashes until the unit acquires a position.

Do not rely on any data that is

flashing!

When the numbers are flashing, they represent the last known

values when the unit lost it’s lock on the satellites.
(Note: The altitude data may still flash even if the unit shows a “Position

Acquired” message and all other data is not flashing. The unit must be
locked onto at least f our satellites to determine altitude. It only takes three
satellites to determine position. You can navigate with this unit if the alti­tude is flashing, simply ignore the altitude display until it quits flashing.)

REMEMBER, DO NOT NAVIGATE WITH THIS UNIT UNTIL THE

NUMBERS STOP FLASHING!

POSITION/NA VIGA TION SCREENS

This unit has four modes: status, plotter , na vigation, and window groups .
Use the PAGES and arrow ke ys to s witch betw een the diff erent screens .
The four screens that show b y def ault are sho wn belo w.

STATUS NA VIGATION PLOTTER WINDOWS

9

To change modes, simply press the PAGES key. A
screen similar to the one at right appears. Use the up
or down arrow keys to change modes. (The windows
mode is shown as “GRP” (groups); group “A” is the first
windows group .)

Press the right arrow ke y while the above menu is show­ing to switch between diff erent versions of each mode.
When the desired screen appears, press the EXIT ke y
to erase the menu.

Navigation Screens

There are two different na vigation screens. Nav screen number one shows
a graphical view of your trip, Nav screen number 2 shows all navigation
details in large digital numbers. You can also customize both navigation
screens to show data other than the def ault. See the “Programming Box es”
section for more inf ormation.

Nav Screen #1

This screen has a compass rose that shows not only
your direction of travel, but also the direction to a re­called waypoint. The navigation screen looks like the
one at right when you’ re

not

navigating to a waypoint.
Your position is shown by an arrow in the center of the
screen. Your trail history, or path you’ve taken is de­picted by the line e xtending from the arrow. The arrow
pointing down at the top of the compass rose indicates
the current track (direction of travel) you are taking.
This is also shown in the “TRK” (trac k) box in the upper
right corner of the screen. On the example shown at
right, the track is 355°. The current g round speed (GS) shows in the bo x
in the lower left corner of this screen.

When navigating to a waypoint, Nav screen number
one looks like the one at right. Bearing to the destina­tion waypoint is in the bo x in the upper left corner. Bear­ing is also shown by the large arrow pointing up to­wards the compass, abov e the present position arrow .
Distance from the present position to the waypoint (DIS)
shows beneath the compass on the lower left side of
the screen.

Lines on either side of the present position show the
current cross track error range . Cross track error is the

10

distance you are off-course to the side of the desired
course line. The course line is an imaginary line drawn
from your position when you started navigating to the
destination waypoint. It’s shown on the screen as a
vertical dotted line. The def ault for the cross track error
range is 0.25 mile. F or example, if the present position
symbol touches the right cross track error line, then
you are .25 mile to the right of the desired course. You
need to steer left to return to the desired course. The
cross track error is also shown in the “XTK” box. Be­neath this box is the course (CRS) box showing the
direction from your starting position to the waypoint.
Remember , a course is a proposed path from the start­ing position to the destination. Track is your actual di­rection of trav el.

A circle depicting your destination (wa ypoint) appears
on the screen as you approach the wa ypoint as shown
on the screen at right.

Nav Screen #2

This navigation screen shows all navigation informa­tion in large digital numbers. To view this screen, press
the PAGES key, then press the up arrow key until the
“NA V1” label is highlighted. While it’s highlighted, press
the right arrow key. The screen shown at right appears.
Press the EXIT key to er ase the menu.

This screen is composed of eight digital boxes. Track
(TRK) and ground speed (GS) are all that show if y ou’re
not navigating to a wa ypoint. If you are na vigating to a
waypoint, then bearing (BRG), distance to waypoint
(DIS), estimated time en route (ETE), course (CRS), cross track error
(XTK), and the CDI also operate. See below f or more information on the
CDI.

Course Deviation Indicator (CDI)

Once navigation to a waypoint is established, the CDI shows your dis­tance to the left or right of the desired course. The ver­tical line in the box shows both the direction you must
steer to get back on course and the distance to the
course line. For e xample, if y ou’ re tr av elling straight to­wards the destination, from the start, then the line stays

11

in the center . If you drift off course to the left, the line moves to the

right

.
This signifies that you need to steer to the right to get back on course.
This is called “chasing the needle”. If you steer towards the line (needle),
you’ll always be heading in the correct direction to get back on course.

The CDI’s r ange shows in the upper right corner of the CDI box. You can
adjust the range by selecting the “ALARMS/CDI” label on the main menu.
The default is 0.25 mile. This is also shown by the dots at the far left and
right side of the CDI. If the line is on either of these dots, then you are 0.25
mile off course. Remember, if the line mo v es to the left, then y ou are too
far to the right of the desired course line and vice-versa. On the CDI shown
above , the w e are almost 0.125 mile to the left of the desired course.

Plotter

The plotter shows your course and trac k from a “birds-eye” vie w . If you’ re
navigating to a wa ypoint, the plotter shows your starting location, present
position, course line, and destination. You don’t hav e to navigate to a way­point, howe v er, to use the plotter .

Using the plotter is as simple as pressing the PAGES key, then highlight­ing “PLOT 1”. A screen similar to the one below appears. The diamond
flashing in the center of the screen is your present position. The solid line
extending from the diamond is your plot trail, or path you’ve taken. The
plotter’s range shows in the lower left corner of the screen. In this ex­ample, the plotter’ s range is tw o miles from the left edge of the screen to
the right.

There are three different plotter screens a vailab le. To view the other plot­ter screens, press the PAGES key, highlight the PLOT label, and press
the right arrow ke y. Press the EXIT ke y to erase the menu. Plot-2 (shown
at right) has navigation data added at the bottom of the screen, beneath
the plotter . The data includes bearing to wa ypoint (BRG), distance to way­point (DIS), ground speed (GS), and track (TRK).

PLOT-1 PLOT-2 PLOT-3

12

Plot-3 (see at the top of the next page) is similar to
plot-2. The major difference is the steering arrow and
waypoint inf ormation at the bottom of the screen. When
you navigate to a waypoint, the waypoint’s name and
number show at the bottom of this screen. The steer­ing arrow alwa ys points in the direction to the waypoint.

The Z-IN and Z-OUT ke ys zoom-in and out all plotters
to enlarge or reduce their cover age area. The av ailable
ranges are: 0.1, 0.15, 0.2, 0.3, 0.4, 0.6, 0.8, 1, 1.5, 2, 3,
4, 5, 6, 8, 10, 15, 20, 30, 40, 60, 80, 100, 150, 200, 300, 400, 600, 800,
1000, 1500, and 2000 miles. Pressing both the Z-IN and Z-OUT centers
the cursor’ s position on the plotter screen.

Cursor

Pressing an arrow key turns on two dotted lines that
intersect at the present position symbol. These lines
are called a “cursor” and have a variety of uses.

To turn the cursor on, simply press the arrow key in the
direction you want the cursor to move. This lets you
view areas on the plotter that are away from your
present position. The cursor’s latitude and longitude
show at the top of plot-1’s screen. The zoom-in and
zoom-out keys work from the cursor’s position when
it’ s active - not the present position. You can zoom in on
any detail, anywhere . The cursor can also place icons and waypoints.

Press the EXIT ke y to er ase the cursor.

Plotter Options

This unit lets you customize the plotter using the plot­ter options menu. To use this menu, press the MENU
key, then highlight the “Plotter Options” label. The screen
at right appears.

Update Options

By default, the plotter places a dot on the screen e very
3 seconds to create the plot trail. You can change this
time from once per second to once ever y thirty min­utes. The plot trail can also be updated by distance
instead of by time. The distance update r ate can be set from 0.01 to once
ev ery 10 miles.

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From the Plotter Options menu, choose Update Options to change the
update rate or type. Select the option that you wish to change , use the left
or right arrow keys to adjust it, then press the EXIT key to erase the
menu.

Plotter Orientation

Normally , the plotter shows north at the top of the screen. This is the wa y
most maps and charts are printed. This is fine if you’re travelling north­ward. Waypoints on the plotter’s left side should also be to your left, and
so on. Howe ver , if you trav el any other direction, the plotter doesn’t line up
with your view of the world.

To solve the problem, this unit has a track-up mode that orients the top of
the display to your trac k, or direction of tra vel. It rotates the plotter as you
turn. Thus, what you see on the left side of the plotter should alw ays be on
your left. The unit also has a course-up mode that loc ks the course to the
top of the display.

On the example screens shown belo w , w e’ re trav elling southward (about
150°). In the north-up view, the present position indicator appears to mo ve
toward the low er right corner of the screen. The anchor icon sho wn on the
right side of the screen is actually on our left. North is always at the top of
this screen.

In the track-up view, the present position symbol (which has changed to
an arrow) moves straight toward the top of the display. As you can see,
the anchor icon is now shown in its proper orientation - to the left. A “N”
shows to help see which direction north is when the track-up mode is on.
Remember, in the track-up mode, the screen rotates as you change di­rection. It always k eeps your direction of trav el (track) headed tow ards the
top of the screen.

TRACK-UP MODENORTH-UP MODE COURSE-UP MODE

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GRIDS

RINGS BOTH

The course-up mode locks the top of the screen into the original bearing
to the waypoint when navigation was first started. (See the navigation
section for more inf ormation on course, trac k, and wa ypoint na vigation.)

To select a plotter orientation, highlight the “ROTATE” label on the “Plotter
Options” menu. Press the right or left arrow keys until the desired mode
appears. Press the EXIT key to erase the men u.

PLOT TRAILS

The line extending from the present position is your
plot trail, or path you’ve taken. The unit automatically
sav es the current plot trail in memory when you turn it
off.

Clear Trail

To erase the current plot trail from the screen, select
Clear Trail from the Plotter Options menu. A message
appears, asking if y ou really want to erase the plot trail.
Follow the instructions on the screen. When the trail is
erased, the unit returns to the plotter screen.

Record T rail

T o stop the plot tr ail from recording on the plotter screen, select “RECORD”
from the plotter options menu, then press the left arrow key. To start re­cording the trail again, repeat the abov e steps, then press the right arrow
key .

Range Rings/Grid Lines

The plotter screen can be customized with rings that are 1/4 of the range
and/or grids that divide the plotter into equal segments of latitude and
longitude. F rom the Plotter Options menu, choose either Range Rings or
Grid and press the right arrow key to turn it on. A sample screen of each
type shows below.