Lowrance AirMap User manual

INSTALLATION AND
OPERATION INSTRUCTIONS
AirMapTM
VERSION 3.3

Copyright © 1996, 1997 Lowrance Avionics
All rights reserved.
Lowrance®is a registered trademark of Lowrance Electronics, Inc.
IMS SmartMap™ is a trademark of Lowrance Electronics, Inc.
Jeppesen®is a registered trademark of Jeppesen Sanderson, Inc.
WARNING!
USETHISMAPPINGUNITONLYASANAIDTONAVIGATION.ACARE-
FUL NAVIGATOR NEVER RELIES ON ONLY ONE METHOD TO OB-
TAIN POSITION INFORMATION.
Never use this product while operating a vehicle.
The background map built into this unit is not intended for navigation and
its accuracy has not been verified.This map is derived from U.S.govern-
ment sources which rely on ground and aerial surveys and satellite data.
Since there can be inaccuracies in the data used to create the maps and
in the map’s resolution, plus position inaccuracies in the navigation sys-
tem, use caution when using this product.
CAUTION
Whenshowingnavigationdata toaposition (waypoint),this unitwillshow
the shortest, most direct path to the waypoint.It provides navigation data
tothe waypoint regardlessofobstructions.Therefore,theprudentnaviga-
torwill notonlytakeadvantageof allavailable navigationtools when trav-
elling to a waypoint, but will also visually check to make certain a clear,
safe path to the waypoint is always available.
Thestoragetemperatureforyourunit isfrom-4 degrees to+167degrees
Fahrenheit(-20to +75degreesCelsius).Extendedstoragetemperatures
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 war-
ranty.For more information, consult the factory customer service depart-
ment.
All features and specifications subject to change without notice.
All screens in this manual are simulated. Many were taken with an IMS
SmartMap™ loaded into one of the cartridge slots.

INTRODUCTION .......................................................................................................... 1
INSTALLATION ............................................................................................................. 2
BATTERY INSTALLATION............................................................................................ 3
EXTERNAL POWER .................................................................................................... 4
ANTENNA..................................................................................................................... 5
REMOTE ANTENNA MOUNT...................................................................................... 5
MAP CARTRIDGE INSTALLATION ............................................................................. 6
REMOVING MAP CARTRIDGE ................................................................................... 7
YOKE MOUNT .............................................................................................................. 8
KEYBOARD .................................................................................................................. 9
OPERATION ................................................................................................................. 10
TURNING POWER ON ................................................................................................ 10
MENUS ......................................................................................................................... 10
FINDING YOUR POSITION.......................................................................................... 10
COLD START ............................................................................................................... 10
INITIALIZATION ........................................................................................................... 11
ENTER BY MAP........................................................................................................... 11
ENTER MANUALLY...................................................................................................... 13
POSITION/NAVIGATION DISPLAYS ........................................................................... 14
NAVIGATION SCREENS ............................................................................................. 15
CDI INDICATOR ........................................................................................................... 16
MAPPING SCREENS .................................................................................................. 17
AUTOZOOM ................................................................................................................. 19
MAP CURSOR ............................................................................................................. 20
MAP SYMBOLS ........................................................................................................... 21
OBSTRUCTIONS ......................................................................................................... 21
AIRSPACE .................................................................................................................... 23
AIR MAP OPTIONS ..................................................................................................... 24
MAP ORIENTATION ..................................................................................................... 25
EARTH MAP OPTIONS ............................................................................................... 26
C-MAP OPTIONS......................................................................................................... 28
PLOTTER OPTIONS .................................................................................................... 29
ICONS .......................................................................................................................... 31
WINDOWS.................................................................................................................... 33
REPROGRAM WINDOW GROUPS............................................................................. 33
SATELLITE INFORMATION SCREEN......................................................................... 35
DUAL MAPPING........................................................................................................... 37
CLOCK ......................................................................................................................... 37
TIMERS ........................................................................................................................ 39
REPROGRAM BOXES................................................................................................. 40
DATABASES ................................................................................................................. 42
SAVING PRESENT POSITION AS A WAYPOINT (QUICK SAVE)............................. 46
SAVING CURSOR POSITION AS A WAYPOINT........................................................ 47
SAVING PRESENT POSITION AS A WAYPOINT (SELECT WAYPOINT #).............. 47
SAVING CURSOR POSITION AS A WAYPOINT (SELECT WAYPOINT #) ............... 47
EDIT WAYPOINT LAT/LON .......................................................................................... 48
WAYPOINT NAMES ..................................................................................................... 48
WAYPOINT ICONS ...................................................................................................... 49
DELETE A WAYPOINT ................................................................................................ 49
MOVE A WAYPOINT .................................................................................................... 50
DISTANCE BETWEEN WAYPOINTS........................................................................... 50
WAYPOINT OPTIONS.................................................................................................. 51
ROUTES ....................................................................................................................... 51
SELECT WAYPOINTS - WAYPOINT LIST................................................................... 52
SELECT WAYPOINTS - FROM MAP........................................................................... 53

FINISHING THE ROUTE.............................................................................................. 53
FOLLOWING A ROUTE ............................................................................................... 54
DELETE A ROUTE....................................................................................................... 55
NAVIGATION ................................................................................................................ 55
NAVIGATE TO A DATABASE LOCATION .................................................................... 55
NAVIGATE TO CURSOR POSITION ........................................................................... 56
NAVIGATE TO A WAYPOINT USING THE MAP ......................................................... 56
“NEAREST” .................................................................................................................. 57
CANCEL NAVIGATION ................................................................................................ 58
SYSTEM SETUP.......................................................................................................... 58
TRACK HOLDING ........................................................................................................ 58
GPS CORRECTIONS .................................................................................................. 59
DATUM.......................................................................................................................... 59
PCF (POSITION CORRECTION FACTOR) ................................................................. 60
UNITS OF MEASURE .................................................................................................. 61
POSITION FORMAT .................................................................................................... 61
NMEA/DGPS ................................................................................................................ 62
SERIAL COMMUNICATION SETUP............................................................................ 65
RESET OPTIONS ........................................................................................................ 65
RESET GROUPS ......................................................................................................... 65
SYSTEM INFO ............................................................................................................. 65
NAME INPUT ............................................................................................................... 66
GPS SETUP ................................................................................................................. 66
GPS UPDATE RATE/BATTERY SAVE......................................................................... 67
POSITION PINNING .................................................................................................... 67
EXECUTE GPS SELF-TEST ....................................................................................... 67
EXECUTE GPS COLD START .................................................................................... 68
ALARMS ....................................................................................................................... 69
MESSAGES.................................................................................................................. 70
BACKLIGHT ................................................................................................................. 71
CONTRAST .................................................................................................................. 72
SPEAKER ON/OFF ...................................................................................................... 72
SIMULATOR ................................................................................................................. 72
E6B COMPUTER ......................................................................................................... 74
BATTERIES .................................................................................................................. 76
DEFINITION OF TERMS/ABBREVIATIONS ............................................................... 76
JEPPESEN UPGRADE................................................................................................ 77
WINDOW BOXES......................................................................................................... 78
WINDOW GROUPS ..................................................................................................... 80
UPS RETURN POLICY ................................................................................................ 82
WARRANTY ................................................................................................................. 84
DATABASE LICENSE AGREEMENT........................................................................... 85
DATABASES LIMITED WARRANTY ............................................................................ 86
HOW TO OBTAIN SERVICE - INTERNATIONAL .......................... INSIDE BACK COVER
HOW TO OBTAIN SERVICE - U.S.A. ONLY ................................................BACK COVER

1
INTRODUCTION
Thank you for purchasing a Lowrance Avionics AirMap™.With its large
LCD screen, easy to use menus, and outstanding performance, we think
you’ll be happy with your AirMap for many years.No other handheld GPS
receiver on the market today has the AirMap’s combination of 12 channel
receiver, Jeppesen®database with obstacles (U.S.only), ground and hy-
drographic mapping cartridge capability, and programmable screens in a
handheldunit.
Like most GPS receivers, your AirMap doesn’t have a compass or any
other navigation aid built into it. It relies solely on the signals from the
satellitesto determineits position.Speed, directionoftravel, anddistance
are all calculated from position information. Therefore, in order for it to
determine the direction you’re travelling, you must be moving, and the
faster - the better.This is not to say the unit won’t work at walking speeds
- it will. But the faster you travel, the easier it is for the unit to determine
your direction.
GPS works from satellites that transmit information to the world at very
high frequencies.One disadvantage to this frequency is that it’s “line-of-
sight”. In other words, the signals don’t bounce around like your local
radio or television. If you don’t have a clear view of the sky, or if you’re
inside a metal building, the unit probably won’t be able to pick up the
signals from the satellites.This is common among all GPS receivers. We
have found that using this product inside an aircraft is usually sufficiently
close to the windows and windshield that it works well. However, the in-
cluded remote antenna bracket and cable (model PA-2) lets you mount
the removable antenna on top of the dash, in case it’s required.
Another factor that influences the GPS’position and navigation capabili-
ties is called selective availability or SA.This is small errors purposefully
injected into the transmitted signal from the satellites. The government
does this to degrade the system’s accuracy to civilian and foreign users.
Evenwith SA,GPS is themost accurate navigationsystem everinvented
on such a large scale. The Government’s accuracy specification is 100
meters horizontally and 150 meters vertically 95% of the time. In other
words, the position shown on your AirMap could be up to 100 meters in
any direction from your actual position, and the altitude could be plus or
minus 150 meters from what’s shown on the screen, 95% of the time.
One way around the S/A problem is to purchase a DGPS receiver and
connect it to your AirMap. A DGPS receiver (commonly called a beacon
receiver), picksup correction signalsbroadcastfrom ground stations.The

2
INSTALLATION
The AirMap operates from six AA batteries or from 6 to 35 volts DC.The
cigarette lighter adapter included with your unit plugs into virtually any
aircraft’selectricalsystem.The AirMapautomaticallyswitchesto external
power when it’s plugged into the unit (provided that the external power
has a higher voltage than the batteries.) If, for any reason, the external
power fails, the unit will automatically switch to the batteries.The AirMap
does not require batteries when external power is in use, however they
make a good backup in case of power failure. A rechargeable battery
pack, (optional)hasanickle-metalhydridebatteryandcharger built into a
pack that’s almost identical to the alkaline battery pack that slides onto
the bottom of the AirMap.
An external antenna kit supplied with the unit allows the removable an-
tenna to be mounted on a suction cup bracket up to four feet away from
the GPS receiver.
SUCTION CUP
AND BRACKET
NiMH BATTERY
AirMap takes these corrections and applies them to the position and alti-
tude screens, giving you much better accuracy. Even with S/A on, and
withouta DGPSreceiver,yourAirMapgivesyououtstandingposition and
navigationinformation.
Pleasesit down with theunitand thismanualandfamiliarizeyourself with
them before using this unit in the “real world”.A simulator is built in, which
lets you practice with the receiver.

3
BATTERY INSTALLATION
TheAirMap requiressixAA batteries.We recommendDURACELL®alka-
line batteries, but other brands will work. You can use lithium batteries
which will last longer than alkaline batteries (but cost more) or recharge-
ableni-cad batteries (won’t last aslongas standard alkalines).Recharge-
able alkaline batteries such as RayOVac®Renewals®will also work .
Do not use heavy-duty batteries or any battery 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.)
To install the batteries, first turn the AirMap so that it is facing you. Now
grasp the bottom part of the case and push it to the right until it comes
completely off the unit.The bottom
part of the case holds the batteries.
Next, push the batteryholderoutthe
bottom of the battery cover as
shown below. Install each battery
withthe negativeend(-)against the
spring.The positive end (+) of each
battery should be firmly against the
metal plate. When all six batteries
areinstalled,slidethebatteryholder
into the battery cover.
Ifthebatteryholderstickswhenslid-
ing into the battery cover, apply a
thin film of petroleum jelly to the“O”
rings on the battery holder.

4
IMPORTANT!
There are arrows molded into the bottom of the battery cover and battery
holder.Make certain the arrows are properly aligned! Otherwise, the bat-
tery holder won’t slide all the way into the cover and the battery pack
won’t slide onto the unit.
Slide the battery pack onto the unit and the AirMap is ready for use.
EXTERNAL POWER
Instead of batteries, the AirMap can operate on 6 to 35 volts DC from an
external power source.To use external power, an adapter cable is sup-
pliedwith yourunitthat willpluginto yourvehicle’scigarettelighter.To use
this cable, simply plug one end into the AirMap and the other end into the
cigarette lighter. A rubber plug is supplied with your AirMap to cover the
external power jack on the side of the unit when it’s not in use.
Youcanleavethe batterypackonwhen using externalpower, nodamage
to the batteries or the unit will occur. However, if you remove the battery
pack from the AirMap, we recommend that the battery contact cover be
placedonto thebattery pack asshownbelow.Thiswill preventthebattery
pack contacts from shorting against metal objects.
A separate cover is provided for the bottom of the AirMap.

5
Remote Antenna Mount
Theremoteantennakit lets youmountthe
AirMap'santennauptofour feetaway.The
suctioncup mountcanbe installedonvir-
tually any flat surface.
Firstpress thesuctioncup intothehole in
the bottom of the bracket. Next, remove
theantennafrom the AirMapandslidethe
suction cup bracket over the antenna as
shown at right. Press the antenna cable
ANTENNA
Your AirMap has a removable antenna that folds over the display when
the unit is not in use. This prevents damage to the display. To open the
antenna, simply lift on an edge and raise it to the desired position.The
antennais aquickrelease design,simplifyingits removaland installation.
To remove the antenna, push the antenna to the right (1), while simulta-
neously moving the antenna up (2), until it clears the AirMap's right side
(3). To replace the antenna, reverse the above steps. Make certain to
alignthe antenna withtheAirMapuntil the antennaslidesintoplace tothe
left by itself. When it does, the antenna has mated with the connector
inside the unit and it’s ready for use.
1. 2. 3.

6
MAP CARTRIDGE INSTALLATION
The AirMap uses Jeppesen®, IMS Smart-
Map™ and WorldMap™, and C-Map™ car-
tridges,allofwhicharepackagedinacartridge
housing specifically designed for Lowrance
mapping products.
The IMS SmartMap™ cartridges contain digi-
tized data of over 120,000 bodies of water.
Nearly allinlandwaterways-publicandprivate
lakes, rivers,andstreams, pluscoastal United
States waters up to 25 miles out are included.
There are also state and U.S.interstate high-
ways androutes, citiesandtowns.Theseinland mappingcartridges cover
the entire continental United States in 64 highly detailed cartridges.The
WorldMap™ cartridges cover all other areas of the world, showing more
detail than the background map, but not as much as the SmartMap™
areas.
LEI IMS
TEXAS
NORTH
AMERICAS
DATABASE
LEI IMS
AMERICAS
DATABASE
AMERICA’S
DATABASE
over the suction cup bracket and onto the an-
tenna.This locks the bracket onto the bracket
with a friction fit. Press the other end of the
cable firmly onto the AirMap's left antenna
mountingbracket.Moistenthesuctioncup and
press it onto any clean, smooth surface.The
unit is now ready for use.

7
To install a cartridge into the AirMap, first make certain the unit is turned
off. Never install or remove a cartridge with the unit turned on!You
can damage your unit if you install or remove a cartridge with the unit
turned on.Next, pry the cover off the back of the unit.Place the cartridge
into either slot with it’s label facing you as shown at the bottom of the
previous page.Now slide the cartridge towards the top until it stops.Re-
place the cover.
TheC-Mapcartridgescovermostoftheworldwithdetailedviewsofcoastal
and some inland waters.Over 600 cartridges are available.
TheJeppesen® database cartridgecontainsthelocation ofVOR’s,NDB’s,
intersections, and airports.It also has airport information such as runway
length and widths, frequencies, fuel availablity, and more. These car-
tridges can be updated every 28 days. See page 80 for Jeppesen data-
base update information.
REMOVING A CARTRIDGE
If you have difficulty removing a cartridge, use the back cover as a re-
moval tool. Simply press one side of the cover against the ridge on the
cartridge and gently push towards the bottom of the unit. Don’t use a
corner of the cover - it could damage it.
IMPORTANT!
If you unplug the Jeppesen cartridge and turn the AirMap on, or if you
swap your Jeppesen cartridge for a newer one, all routes are erased! No
waypoints will be erased - only routes. Make certain to write down any
stored routes before swapping cartridges.

8
YOKE MOUNTING
Included with your AirMap is a yoke mounting bracket. It secures to the
yoke’s shaft with a clamp. Follow the instructions included with the yoke
mount to assemble and attach it to your aircraft.The AirMap attaches to
the yoke mount with hook and loop material which is already attached to
the back of your unit. Simply press the AirMap onto the hook and loop
material that’s on the yoke mount.
Make certain to push the antenna back as far as it will go.It needs to be
as parallel to the ground as possible in order to receive signals from the
satellites.See the drawings below for a typical installation.
Whenthe AirMapisattachedto theyoke mounting bracket,it can operate
frombatteriesorthe externalpowercord.To usetheexternalpower cord,
simply plug one end into the power connector on the right side of the
AirMap and the other end into the aircraft’s cigarette lighter.

9
KEYBOARD
The keyboard has twelve keys. The arrow keys are tied to most of the
features, letting you easily move the mapping cursor, navigate through
the menus, make selections from menus, and other tasks.
TheWPT key lets you create, save, and recall waypoints and routes.The
PAGES keyswitchestheunit between thethree major displays:windows,
navigation, and mapping.To select different features, or to modify func-
tions,presstheMENUkey.TheZ-OUTandZ-INkeyszoom-outandzoom-
inyourviewon themappingscreen.The ENTandEXIT keysletyouenter
or erase selections.The ENT key works the same as the right arrow key
for selecting features.In other words, you can use the ENT key instead of
the right arrow key to select a menu or enter data.The PWR key turns
both the AirMap and its lights on and off.
Note:To prevent an accidental power shutdown, you must hold the PWR
key down for a few seconds in order to turn the unit off.
PAGES
MENU
Z-OUT Z-IN ENT PWR
EXIT
WPT

10
OPERATION
Turning Power On
To turn the AirMap on, simply press the
PWR key. A screen similar to the one at
right appears. The database cartridge’s
name and expiration date appears at the
bottom of this screen.Press the EXIT key
to erase it. A warning message appears
next, press the EXIT key to erase it, also.
MENUS
Most of the adjustments and features are
found on“menus”.PressingtheMENU key
lets you view the menus.Different menus
items are added or subtracted to the ba-
sic list, depending on which mode (map-
ping, navigation, or windows) the unit is
in.Thisgivesyouthefeaturesthatare spe-
cific to the mode you are in, but also has
items that are used on all modes.
Toerasethe mainmenu, simply pressthe
EXIT key.
FindingYour Position
Cold Start
When it’s turned on for the very first time, the GPS receiver doesn’t know
where it is, nor what the local time or date is. If you tell it your position,
time, and date, the unit will take less time to lock-on to the satellites and
give you a fix or position.
However, if you don’t want to push buttons at this time, that’s fine. The
AirMap will lock onto the satellites and give you a position without any
input from you.This is called a “cold-start”.It simply means that the unit is
searching without your help for the satellites that are in orbit.A cold-start
can take up to 5 minutes to acquire enough satellite data to determine
your position, although it typically takes less time than that.
Oncethe GPSreceiver locks onto the satellitesandfinds your position,it
stores the satellite data in its memory.The next time you use the unit, it
should take less time to lock on.

11
Oncethe AirMap lockson tothesatellitesand finds your position,itstores
the satellite data in its memory.The next time you use the unit, it should
take much less time to lock on.
Touse your AirMap, firsttakeit outside, awayfromhangers and buildings.
You need a clear view of the sky.
Open the antenna and adjust it so that it is parallel with the ground.Press
the PWR key. Read the message on the screen, then press the EXIT key
to erase the message.A screen similar to the one at right appears.
This is Map 3.Your present position is shown
as a cross surrounded by a diamond. As you
wait for the AirMap to find your position, you’ll
see numbers flashing on the display.Anytime
you see flashing numbers, it means the Air-
Map does not have a position! Do not rely on
any data that is flashing! When the numbers
stopflashing, the unithaslocked ontothesat-
ellites and the position is good.
That’sallyouhave todo to findyourposition.The timedisplay maynot be
correct when the cold start method is used.See the manual initialization
section for details on changing the time.
FindingYour Position
Initialization
A cold-start as described above can take up to 5 minutes to find your
position.There is another method to initialize the AirMap that may let it
acquire the satellites faster. Manually entering your position, local time
and date will help the GPS receiver determine which satellites are avail-
able andlockon tothem faster.Thereare twowaysto inputyour position.
You can locate your position on the receiver’s map or enter your latitude
and longitude. Remember, once the receiver finds its position, it stores
the position into memory. The receiver won’t
have to initialized the next time you it on.
Enter by Map
To show the receiver your approximate loca-
tionon itsmap,first presstheMENU key, then
the up or down arrow keys until the “GPS
SETUP”menuis highlighted asshown atright.
Now press the right arrow key. The screen
shown at the top of the next page appears.

12
Using the down arrow key, highlight the “Ini-
tialize GPS Receiver” menu, then press the
right arrow key. The screen shown below ap-
pears next.
Thisis theGPS initialization screen.The posi-
tion, altitude, time, and date the GPS receiver
iscurrently using tofindthe satellites isshown
at the bottom of this screen. Changing these
valuestoyourlocalpositionandtimewillspeed
the position lock.
Tochangetheposition,highlightthe“EDITLAT/
LON label, then press the right arrow key. A
screensimilarto theoneatrightappears.With
the “INPUT FROM MAP” label highlighted,
press the right arrow key. The screen below
appears.
The mapping screen appears with two lines
thatintersect atthecenter.Theselines are the
cursor.Using the arrow keys, move the cursor
to your present position.You can use the Z-IN
and Z-OUT keys to zoom in or out to find your
area on the map. Once you have the cursor
close to your location, simply press the ENT
key.The unitreturnstothe GPS SETUPmenu
with your local latitude and longitude showing
in the box at the bottom of the screen.

13
Enter Manually
To change the position by manually entering
thelatitudeandlongitude,presstheMENUkey,
then highlight the “GPS SETUP” label and
press the right arrow key. Now press right ar-
row key again while the “EDIT LAT/LON” box
is highlighted. The screen shown at right ap-
pears.Highlightthe“INPUTMANUALLY”label
and press the right arrow key. The screen
shown below appears.
Ifyourlatitudeis south,press the upor downarrowkey tochangeit.Ifit is
north,pressthe rightarrowkey tohighlightthefirst number inthelatitude.
Now press the up arrow key to increase the
number or the down arrow key to decrease it.
Once the first number in the latitude is set,
press the right arrow key once to move to the
next number in the latitude.
Keep pressing thearrowkeysuntilthe latitude
and longitude are set to your local position.
(Note:This position does not have to be very
accurate.If you can get it within one degree of
your actual position, that will be fine.) When it’s set, press the ENT key.
The AirMap accepts your entry and returns to the GPS setup menu.
Now change the local time and date if they’re incorrect on this screen by
highlighting the appropriate label and pressing the right arrow key.(Don’t
worry about altitude.)When everything is acceptable, press the EXIT key
to return to a mode screen. The AirMap will instantly use the data you
entered to find the satellites in the sky. (The
unit knows which satellites will be available at
theposition,date,andtimeyou entered.There-
fore, it will only look for those satellites, mak-
ing the search time much shorter than a cold
start which looks for all of the satellites until it
finds three.)
Once the AirMap finds and locks on to three
satellites, it stops flashing the numbers on the
display. (Note: Altitude will still flash until the
unit locks on to the fourth satellite. It takes four satellites to determine
altitude.)

14
WINDOWS
(Group A)
MAPPING
(Map 1)
NAVIGATION
(Nav 1)
IMPORTANT!
If the data shown in digital numbers on any screen is flashing, it means
thatdataisinvalid.DONOTRELYONANYNUMBERSTHATAREFLASH-
ING! Usually, this happens when the GPS receiver has lost its lock on the
satellites.The data that is flashing was the last known when the unit lost
itsnavigationalcapability.
DO NOT NAVIGATEWITHTHIS UNIT UNTILTHE DATA STOPS
FLASHING!
POSITION/NAVIGATION DISPLAYS
The AirMap has navigation, mapping, and windows group modes.These
screens were designed to show data that is used most often.Many of the
navigation, mapping, and windows screens can be customized to show
dataotherthantheoneschosenby thefactory.SeetheReprogramGroups
section for more details.
The three default displays are shown below. To
change displays, simply press the PAGES key. A
screen similar to the one at right appears. Now
presstheupor downarrowkeys tochangemodes.
(The windows display is shown as "Groups". For
example, Group A is the first windows group on
the PAGES menu.) Press the right arrow key to
see more screens on each mode. When the de-
sired screen appears, press the EXIT key to clear
the menu.
Note:For a list of abbreviations used on the displays, see the back of this
manual.

15
Navigation Screens
Therearetwonavigationscreens.Navscreennumberone showsagraphi-
cal view of your trip, the other screen shows all navigation details in large
digital numbers.
Nav Screen #1
This screen is dominated by a compass rose.
Your track (direction of travel) is indicated by
an arrow pointing down toward the compass
rose at the top center of the screen. Track is
alsoshownin theupperrightcornerof thedis-
play under the “TRK” label. In the example
screen shown at right, the track is 7°.The line
extendingbehindthearrowinthecentershows
your track history.
Your speed over ground or Ground Speed is shown at the bottom of this
screen.In this example, the ground speed is 140 knots.The screen looks
like this when you’re not navigating to a waypoint. (See page 58 for infor-
mation on waypoint navigation.) If you navigate to a waypoint, the screen
looks like the one below.
The bearing to the destination waypoint is
shown in the upper left corner of the screen.
Bearingis also shown by the largearrowpoint-
ing up to the compass.
The numbers on either side of the center ar-
row show the cross track error range.In other
words, (using the screen at right as an ex-
ample) if the arrow crosses the dark band on
either side, you are one mile to the left or right
of the desired course.
A circle depicting your destination appears on
the screen as you approach the waypoint, as
shownhere.
The digital boxes at the bottom of the screen
show (from left to right) your distance to go to
the destination (DIS), estimated time en route
(ETE),groundspeed(GS),andcourse (CRS).
Course (CRS) is the bearing from your start-
ing location to your destination. (Remember,

16
course has nothing to do with your present position, except for your start-
ing location.) It’s shown as a dotted line on the NAV 1 display. This is
shown as a reminder so that if you deviate from your original course, you
can easily return to it. (A “course” is a proposed path over the ground. A
“track” is your actual path over ground.)
All of the digital boxes on this screen are programmable. See the “Pro-
gramming”section for more information.
Nav Screen #2
The navigation screen shows navigation information in large digital num-
bers.To view this screen, press the PAGES key, then press the up arrow
key until the black box surrounds the “NAV 1” label. Now press the right
arrow key.A screen similar to the one below appears.Press the EXIT key
to erase the menu.
This screen is composed of eight digital dis-
play boxes,includingtrack(TRK),and ground
speed (GS).The destination shows in the up-
per left corner. Other boxes show navigation
data when a waypoint is recalled, including
bearing to the waypoint (BRG), distance to
waypoint (DIS), and estimated time en route
(ETE).TheCDI is acoursedeviationindicator,
showingyour distance tothe leftor rightof the
desiredcourse.
You can reprogram all of the digital boxes on the NAV 2 screen.See the
"Programming" section for more information.
COURSE DEVIATION INDICATOR (CDI)
TheCDIshowsyourdistancetotheleftor right
of the desired course to a waypoint. (In order
touse theCDI,youmustfirst recalla waypoint
or route. See the Navigation section for more
details.) The arrow in the center of the box
shows the direction to the destination. For example, if you’re travelling
straight towards the waypoint, the arrow points straight up. If you turn to
the right, the arrow points to the left, showing that the destination is to
your left.