Eagle Power II User manual

AccuNav II
INSTALLATION AND OPERATION
INSTRUCTIONS
LITHOIN U.S.A. 988-0129-18 EAGI
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WARNING!
USE THIS GPS RECEIVER ONLY AS AN AID TO NAVIGATION. A
CAREFUL NAVIGATORNEVERRELIESON ONLYONE METHOD TO
OBTAIN POSITION INFORMATION.
CAUTION
This GPS receiver, (like all GPSnavigation equipment) will show the
shortest, most direct pathtoa
waypoint.Itprovidesnavigationdatatothe
waypoint regardlessofobstructions.
Therefore,theprudentnavigatorwill
notonlytake
advantage ofallavailable navigation
toolswhen
travellingto
a
waypoint, but
willalsovisuallychecktomakecertaina
clear,safe
pathto
the
waypoint isalways available.
NOTICE!
Asofthis writing,theDepartmentofDefense(DOD) hasnotdeclaredthe
GPSnavigationsystemoperational.Thesystemisstillin a
testingphase.
Satellitescanbetumedoff
oraccuracycanbedegraded
atwill
bythesystem
operators. RememberthattheAccuNavII,orany
GPSreceiverisonlyas
accurateasthe
systei
it'susing.
Copyright0 1993 Eagle
Electronics
Allrights reserved.
Allfeaturesand specifications subject
tochange without
notice.
Allscreensin thismanualaresimulated.
NOTES:
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TABLE
OFCONTENTS
INSTALLATION 1
POWER CONNECTIONS 2
GPSMODULE INSTALLATION 3
KEYBOARD 6
GPS-HOWITWORKS 7
ACCURACY S
THE
EAGLE GPSMODULE S
GETTING STARTED-INITIALIZATION 9
CHANGE POSITION 10
CHANGEALTITUDE 10
CHANGETIME 10
CHANGEDATE 11
COLD START II
POSITION/NAVIGATION
DISPLAYS 12
SATELLITE INFORMATIONSCREEN 12
POSITION SCREEN 13
STEERINGSCREEN 14
NAVIGATION SCREEN 15
CUSTOMIZESCREENS 15
PLOTTER 16
PLOTTER CURSOR 17
PLOTTING WITH AWAYPOINT 17
PLOTTER MENUS IS
PLOTTER MENU .PAGE1 IS
CLEAR PLOT IS
SETRANGE 19
ICONON/OFF 19
ALARMS 19
GOTO CURSOR 19
CHANGE DISPLAY 20
PLOTTERMENU -PAGE2 20
SELECT UNITSOFMEASURE 20
BACK LIGHTON/OFF 21
GRID LINES 21
PLOTTER UPDATE 22
EVENT MARKER 22
USINGTHEEVENT MARKERWITH THECURSOR 22
ERASING ICONS 23
HELP 23
WINDOWS 24
VIEWING WINDOWS OPTIONS 25
WAYPOINT NAVIGATION 25
HOW
TOSAVEAWAYPOINT 26
QUICKSAVE METHOD 26
VIEWANDSAVE METHOD 26
ENTERNEWWAYPOINT 27
NAMEAWAYPOINT 27
ERASEAWAYPOINT 28
RECALLAWAYPOINT 28
ROUTES 29
CREATING AROUTE 29
NAMEAROUTE 30
WAYPOINT SELECTION 30
FOLLOWINGAROUTE 31
CANCEL NAVIGATION 32
MODIFYINGAROUTE 32
ERASING AROUTE 33
GPSALARMS 33
ARRIVAL ALARM 35
XTE
(CROSS TRACK ERROR)ALARM 35
ANCHOR ALARM 35
CHANGING GPSSETTINGS 35
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TABLEOFCONTENTS (cant.)
SELECT NMENDGPS RECEIVER 36
TRUEANDMAGNETIC POSITION 38
PRESET 39
MANOVERBOARD 39
PCFOFFSET 41
OPSMODULE SELF-TEST '13
GPSSIMULATOR c
SPECIFICATIONS 44
WINDOWS SUMMARY 45
WINDOWS SUMMARY
All ofthewindow groups Usedbythe
ACCUNaVIIareshown onthe
following
pages. Toviewthese groups, simply
press the WINDOWSkey, then re-
peatedpressthedownarrowkey.This
will"cycle" theunitthrough all groups.
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AccuNavIIGPSRECEIVERSPECIFICATIONS
GPSModuleDimensions 2.5"H x4.1Wx7"D
Channels FiveParallel
Fourcontinuousforposition
All satellitesinviewtracked
Updaterate Onesecond
Accuracy Maximum accuracyachievable with
Standard PositioningService
PositionS 25meters CEP
Velocity 0.25 meters/sec RMS
WithoutSAPDOP<6.0
NMEA 0183SENTENCES
RMB Minimum RecommendedSentence, PartB
RMC Minimum RecommendedSentence, PartC
OLL Present Position-Latitude/Longitude
APB AutopilotSteering Data
INTRODUCTION
TheAccuNav
II isahigh quality,widescreen GPSreceiverwithperfor-
mancethatissecondtononein its class. Using menufeaturesand"soft-
key"operation,theAccuNav II isalso oneoftheeasiest-to-use products
Eagle haseverbuilt.The
wide "Ultravision" screen showsthenavigation
and plotter screens with high resolution and detail. The display and
keyboardare also lighted
fornightoperation. Thisunitisalso differential
GPS(DGPS) readyforsuperioraccuracy.
Readthis manualandtakeitwithyou
thefirstfewtimes
youuse your
unit.
Itmakes agreatreferenceifyouneed it.
MOUNTING
Install the AccuNav II in any convenient location, provided there is
clearancebehindtheunitwhenitistiltedforthebestviewing angle.Holes
inthebracketbase allowwoodscrewor
through-bolt mounting.Youmay
needtoplace a
piece
ofplywood onthebackofthin
fiberglass panels
to
securethe
mountinghardware.Makecertainthereisenoughroombehind
theunittoattachthepowerandOPSmodule cables.
Thesmallestholethatwill
pass
onepowerorOPS moduleplug is
oneinch.
Aftertheholeisdrilled, pass theOPScable
connectorupthrough
thehole
first,then pass
the
power
cabledown
through it.
Afterthecables havebeenrouted,filltheholewitha
goodmarine sealing
compound.Offsetthebrackettocoverthe
hole.Routethe
power
andGPS
module cables throughtheslot in thebackofthebracket.
44 1
SLOT
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POWER CONNECTIONS OPSMODULE SELF-TEST
The AccuNav
II works froma twelve-volt batterysystem. Forthebest
results, attachthepowercable
directlytothe battery.Youcanattachthe
powercableto an accessory
orpowerbuss, however you may have
problemswithelectrical interference.
Therefore,it'ssaferto
go
aheadand
attachthe
powercabledirectlyto
the
battery.
Ifthecableistoo
short,splice
#18
gauge
wireonto it.Thepowercablehasfourwires;red,black,green,
andwhite. Red isthepositive lead, blackisnegative orground. Make
certaintoattachthein-line
fuseholdertotheredleadasclosetothe
power
sourceaspossible.For
example, if
you
havetoextendthe
power
cableto
the
battery
or
powerbuss,attach oneendofthefuseholder
directly
tothe
battery
orpower buss.Thiswillprotectboththeunit andthe
power
cable
in theeventofashort. TheAccuNavIIusesa3-ampfuse.
IMPORTANT!
Donot usethis product
withouta
3-ampfusewiredintothe power
cable!
Failure tousea
3-amp
fusewillvoidyourwarranty.
ThisfeatureteststheUPSmodule and returnsa
specialcode.Thiscode
is of interest only totheservice
department. However,the AccuNav II
interpretsthiscodeanddisplaysastatus message.
Thismessageiseither
"MODULEHAS PASSED"or"MODULEHAS FAILED"and shows atthe
bottomofthe
screen. Thecurrentsoftwareversion numberalsoappears
nearthe bottom of the screen. Contact the factory customerservice
department ifthe module fails the self test. Do notattemptto use this
product ifit
failstheselftest.
To usethe self test feature,
pressthe
MENU
keytwicewhile
it'sintheUPS
mode,then press
the
key nexttothe"UPS MOD-
ULE SELF TEST" label. The
screenshownatrightappears.
Toexitfromthisscreen, press
theCLEAR key.
GPSSIMULATOR
Thisfeatureplaces position and navigationdataonallscreens,including
theplotter. Theunit "navigates"aclosed course. Itshows bearing and
distance togo, courseoverground, and otherinformation.Arecurring
message appears,alerting you
thatthesimulatormodeisenabled. Don't
navigate whenthesimulator ison!
Toturnthesimulator
on,press the MENU keytwice,then press thekey
nexttothe"UPSSIMULATOR OFFON" label.Thesimulatormodestarts
immediately.Toturnthesimulatoroff,
either press and holdtheOFF
key
orrepeattheabove steps. Pressthe
keynexttothe"UPSSIMULATOR
OFFON" label.
AccuNavII POWER CONNECTIONS
2 43
TO"P' CONNECTOR
ONACCUNAV II
P CPS SELF TEST
BIT SUMMARY 0000
LOW ORDER RAM FFFF
HIGH ORDER RAM FYFF
PRE PROCESS TEST 0000
PRE PROCESS RAM FEFF
MULTI INTERFACE 0000
LICO TEST 0000
SIGNAL INJS 0000
0FTWARE_VERSION 320
CLEARI
WHITE
WIRE
TO
NMEA
INTERFACE
MODULE HAS PR RED
RED
WIRE
3 amp
FUSE
DOPS
BEACON
RECEIVER
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is the difference between the
location shownonthe present
position display and the posi-
tionshown onthechart.
Usethe
right
andleftarrowkeys
to movethe black box to the
numberthatyou wishto
change
in thelatitude, then enterthe
numbers.
Usethe
upordown arrow keys
Position
Correction
flflr
flFsET:NIooOO.oOO
MOO'
to
changethelatitudefromnorthto
south, if necessary.Pressthe keynext
tothe"ACCEPT" labelwhen
you've entered thedesired latitudeoffset.
Repeat this procedure to
thelongitude. In this
example,
wehaveentered.012
degreesnorthlattitude
and.068
degrees east longitudeasthe
PCFoffset. Thatisthediffer-
ence between thepresentpo-
sitionshownontheunitandour
positionshownby
thechart. In
otherwords,ourposition
shown
on the unit is 0.012 degrees
north and 0.068degrees east
of the position shown on the
Afteryou've entered thedesired offset, press the key nexttothe "PCF
OFFSET OFF ON" label. Thisturns the PCFcorrectionfactorthatyou
enteredon.Toleavethisscreen, pressthe
keynexttothe"EXIT"label.
ThisreturnstheunittothelastusedGPSscreen. Italsoputsyourchanges
into
effect.
Toturnthesechanges off, returntothisscreen and press the
keynextto
the"PCF OFFSETOFFON" label. Remember, Presettingtheunitalso
erasesanyPCFoffset,therebyturning
itoff.
The white and green wires are for a NMEA interface and a DOPS
beacon receiver.TheAccuNavll sendsdatatoanotherelectronic
navi-
gation devicesthroughthewhite wire and receivesdatafromabeacon
receiverthrough the green wire. Ifthewhite and green wires are not
used, tape
theirends sothat
theycannot short.
To connect adevice to the AccuNav's white or green wires, attach a
shielded, twisted pair
cable
fromthedevice's NMEA intput tothewhite
wireon theAccuNav It's powercable.Solder the ground conductor of
thetwisted pair
and theshieldtotheblack wire onthe
power
cable. Do
notconnect theshield totheotherdevice. Seetheotherinstrument's
manual formore wiring instructions.
SeetheNMEA section inthismanual formoreinformation.
GPSMODULE INSTALLATION
TheGPSmodule canbeinstalledonaflat surface or(withthesupplied
adapter) onapole. Mountthemodule in anareathatguaranteesaclear
viewofthe
sky
atalltimes. Inorderforthemodule toreceivethe
signals
fromthesatellites, it must notbe obstructed. An ideal location is on a
cabinroof, ordeck. Thegunhels also makeagood location. Attaching
the pole mounting adapter lets you
installthemodule onaoneinch mast. 17mm
However, forlightning protection, the (11/16")
antenna shoutn't be the highest part
oftheboat.
SurfaceMounting-WithAccess
If you have access underneath the
mounting surface, use the gasket
supplied with theOPS module as a
template. Drill four 5.5 mm (7/32")
holes and one 17 mm (11/16") hole
for the module's cable. Attach the
cabletothemodule and passitdown
through
thehole inthe
gasketandthe
mounting surface. Use 5 mm
screws, flatwashers, and lockwash-
ers tofasten theOPSmodule tothe
mountingsurface. Routethecableto
theAccuNavII.
42 3
IUSE
NUMERIC KEYS
TO CHANGE VALUE
*I
UP="N" DH="S"
Position CorrjoJ
Factor
chart.
5.5mm (7/32")
Hole
(4 places)
GASKET
5MM SCREWS
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SurfaceMounting-WithoutAccess PCFOFFSET
Ifyoudon'thaveaccess tothe backsideofthemounting surface,
use
the "cleats" supplied withtheAccuNav II. (Note:Thisisassuming you
can"snake" themodule's cabletoalocationthatisaccessable. Ahole
willstillneedtobedrilled in themountingsurface for thecable.) Using
thegasket asa
template, markand drill the17mm (11/16") hole forthe
cable. Attach the cable
tothe module and drop the otherend ofthe
cable
through thegasket
and downthehole. Placethe module onthe
gasket. Slide the "cleats" onto each end ofthemodule and(using the
cleatsastemplates) mark fourholesfor5mm(#10) mounting screws.
Drill
theholes,then replacethecleatsonthemoduleandfastenthemto
the mountingsurface with 5mm (#10) screws. Route thecabletothe
AccuNavII.
TheGPS
navigation systemrelies on complexmathematicalcalculations
todetermine yourposition basedonsatellite dataandotherfactors. One
factoristheEarth'sshape. SincetheEarthisnot a
true
sphere,
variations
inthecalculationshavetobemadetoaccommodatedeviations.Tomake
matters morecomplex, noteveryone usesthesame data todetermine
whatthedeviations are.Thesizeandshapeofthe
ellipsoidsthatareused
toapproximate theearth's surface are improvedoften. Thiscanleadto
errorsifyournavigation device usesone ellipsoid,
while
yourchartuses
adifferentone. Thetermusedforthese
ellipsoidsis"Datum."
Toreducetheerrorfactorbetweendatum, thisunit
givesyou
the
capability
tomoveor"offset"the
position shownonthe
displaytomatchtheoneon
the
chart.Theunitwilladd thisoffsettoallpositiondisplaysatalltimes.
Remember, the UPS erroris verydynamic and the PCFoffsetshould
never beused in an attempt to cancel theerror. In general terms this
featureshould only beusedifyourmapindicateswhatthepossibleerror
is.Thisfeatureshould
always beresettozero(0)whenfinishedwiththat
chart.
Forexample, suppose you are stopped atalocationthat isaccurately
marked on a chart. Yourunit shows a longitude position that is .010
degrees less than the one onthechart. Usingthe Positipn Correction
Factor(PCF)Offset
feature,youmaketheunitreadthesameasthe chart.
Ifyou move, the unit will continuously add the change to all position
displays.Thismakes itmoreclosely
matchthe datum used by the
chart.
Forthis reason,you should becarefulwhen
entering
thePCFoffset.This
offset issaved in memory. Itdoesn't changewhen theunitisturned off.
However,aPreset does erasethePCFfactor.
TosetthePCF
factor,
first
press theMENU key,
then pressthe
keynext
to the "CHANGE GPS SET-
Position Correctioid TINGS" label. Nowpress the
Factor key
nexttothe"ADJUST FCF
______________ OFFSET" label. The screen
______________ shownbelowappears.
Now
pressthekeyadjacent to
the"CHANGEOFFSET" label
toenterthecorrectionfactorfor
your location. The screen
shown at the top of the next
pageappears.Remember,
this
'CLEAT"
MARK AND
DRILL FOUR
PLACES
GPS
GASKET
CABLE
LAT OFFSET:
LON OFFSET: IIJ.tAUJ.UJ.U E 0°OO.000'
4 41
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The plotterdisplay automatically shows a .1 mile display in the Man PoleMount
Overboard mode. Yourposition when the Man Overboard key was
pressed
isshownby the"S"withacircleand bythe
waypoint iconwitha
"0"Steertothe
waypointflagtoget
backtothe
position savedwhenthe
Man Overboardkey was pressed.
IMPORTANT!
TheAccuNavIIdoesn'tsavetheManOverboard positioninthe
waypoint
table.However,itdoes savethe
position ontheManOverboardscreen.
TheAccuNavIIalways showsnavigation datatothe
position
shownonthe
ManOverboardscreenwhenevertheManOverboardkeyispressed.To
stop
theunitfrom
navigating
totheManOverboard position,press the
key
next to the "DISABLE MOB" label. This resets the Man Overboard
navigtion.
For
example,supposeyou
are
viewing
thePositionscreen,and
youpress
the Man Overboard key, then press the GPS key. TheAccuNav II first
displaysthenstoresyourpresentposition
ontheMan Overboardscreen,
then
switchesbacktothePositionscreen. If
youpress
theManOverboard
keyagain,itwillstillshownavigation
datatothe
positionyou
wereinwhen
youfirst pressed the Man Overboard key -notyour present position.
Repeated pressing
oftheManOverboard keydoesnot
repeatedly save
yourpresentposition!
Theunit
onlysaves
the
position
thefirsttimetheMan
Overboard keyis pressed.To saveanew Man Overboardpostion. you
mustfirst clearthe old Dosition by Dressing thekey adiacent to the
"DISABLE MOB"label.
You can navigate to a waypoint using the Waypoint Recall feature,
howeverwhen yougobacktotheManOverboard screen,theAccuNavll
stopsnavigatingtotherecalledwaypoint.
Remember,savingthevictimisthe primarygoal. Try
alloptionstorescue
theperson immediately afterthe
accident
happens.Training and educa-
tion are also good accident preventatives.
The Coast Guard has
excellentsafetycourses.Instructall membersonboardyourboat
onsafety
proceduresbeforeleaving
the
dock.Makecertainallonboardknowwhat
todobeforeanyemergencyoccurs.
40
First,threadthe
polemountingadapterontothemountingpoleorratchet
base. Alignthepole mountingadaptersothemodulewillfacethebowof
theboat. Installandtightenthesetscrewinto
thepolemounting adapter
and tighten it securely. This should prevent the GPS module from
unscrewing fromthe pole. Place the gasket onto the pole mounting
adapter. NowattachthecabletotheGPSmodule and passthecable
throughthe gasket, pole mounting adapter, and pole. Set the GPS
module ontop ofthepolemountingadapter and alignthefourthreaded
holesin themodule with theholes
in the pole mountingadapter. Using
thefourstainless steel5mmscrews and lock
washers
supplied
withthe
AccuNav II,attach thepolemountingadapter totheGPSmodule. This
completes theassembly.
POLE
MOUNTING
ADAPTER
Ifthepoleormast you'reusingisn'thollow oriftheholein themiddleof
thepoleistoosmall fortheconnectors, usethecable
mounting adapter
supplied
with
your
unit.Threadthecable
mountingadapter
intotheOPS
pole mounting adapter. Thenthread the pole into the cable mounting
adapter. Routethecabledowntheoutside
ofthepole.
5
SET
SCREW POLE
DULE
CABLE
MOUNT-
ING
ADAPTER
POLE
CABLE
MOUNT-
ING
ADAPTER
POLE
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KEYBOARD PRESET
Thekeyboardhas
keys
arrangedin
twoverticalcolumns plusahorizontal
rowatthebottom.Thekeysintheleftand
rightcolumnsareusedtoenter
numbers, activatethe windowsfeatureand menuselections..Themenu
key
inthebottom
right
comerofthe
keyboardactivatesthefirstmenupage.
Thekeysalong thebottomofthescreen areused toactivatetheevent
markers orman overboard feature, andmake menu selections withthe
arrowkeys.
WINDOWS -Thiskeygivesyou access tothewindows mode, which letsyou
customize
displays.
P05-Press thiskey toshow
thePosition Screen.
PLOT-Thiskeygives access tothePlotter.
NAV
-Pressing
thiskeyshowsthe Navigation Display.
STEER
-Press thiskeytoshow
theSteering Screen.
MENU
-Press thiskey
toshowthe menus and
gain
accesstomostfunctions
WAYPOINT QUICKSAVESPressthis
keytoinstantly save yourpresentposition.
WAYPTSAVE -Pressing thiskey letsyou saveawaypoint.
WAYPTRECALL
-Press thiskey
torecall awaypoint.
ALARM
-Usethiskey
tosettheOPSalarms.
CLEAR -Thiskeyclears menus anderasesentries fromthescreen.
EVENT MARKER -To markalocation onthe plotter screen, use thisfeature.
MAN
OVERBOARD -Pressingthis
keyinstantly
saves
yourpresentpostion and
switchestheunitintoamodethatshows
navigationdatatothelastsavedposition.
ARROWKEYS -Thesekeys areused tomakemenu selectionsandtomove
objects
onthescreen.
ON-TheON key
turnsthe AccuNav IIon.
OFF-PressandHOLD theOffkeytoturntheAccuNav II off..
ThePresetfeaturereturnsallsonarandGPSunitstotheir
original
factory
settings. This resets the unitsof measure, speakervolume, display
contrast,
andmore.Thisdoesn'teraseanywaypoints or
routes, however.
Topreset
theunit,press theMENU key untilthe"PRESET UNIT' label
appears.Pressthe
keynexttothatlabel.Themenuscreendisappearsand
theAccuNavII returnstotheGPS
position
screen.Allunitswillbereturned
totheir
factorysettings.
MAN OVERBOARD
Oneofboating's mostterrifying eventsishaving afriendorfamily member
falloverboard. Thissituationcanbedeadlyonanybodyof
water,
freshor
salt. It's
particularly dangerous atnightorifyou're
outofsightofland.Of
course, thefirst thing to dois remain calmand try all standard safety
measurestotry torescuetheperson.If
youlosesight
ofthe
person, you
canuse
theAccuNavIItohelpstart asearch pattern.
Once
you're
backatthehelmafter
initialrescueeffortshave
failed,press
the AccuNav Ii's M4N OVERBOARD key. The screen shown below
appears.Your position
atthetime
youpressedtheManOverboardkeyis
showninthe
top
leftcornerofthe
display.Beneaththepositionisthetime
that
youpressed
theManOverboardkey.
Atthebottomofthescreen are
the
navigationdata displaysshowingtheDistance
(DTG),Bearing(BRG),
Course(COG),andTimeToGo(TTG) backtothe
postionatthe top
ofthe
display.Using
these
displaysalong
withthe
plotter
inthelower
right
corner
ofthe
displaygivesyou
theinformation
youneedtosteerbacktotheman
overboard position.
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6 39
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The lowerhalf of the screen
showsstatisticsforeachofthe
receiver's five channels. This
includes the satellite number
(PRN), its status (STAT), the
UserDifferential Range Error
(UDRE), Time status (TIME), _______
andifSA(SelectiveAvailablity) CLEAR _________
isonor off. TheUDRE isthe _____
range errorfromyourposition
tothesatellite. Ifthereisan"OK" inthisfield, then
therangeerrortothat
satellite is8metersorless68
percent ofthetime.
GPS-HOW ITWORKS
TheGlobal PositioningSystem (GPS)isthe
best
approach tonavigation
that haseverbeen devised. Conceived bytheDepartment ofDefense
(DOD)
andtheUnitedStatesmilitary,
theGPS
system
isananswertotheir
needs of24hourglobal positioning,365
daysa
year.
Basically,thesystem works byusingaconstellation ofsatellites orbiting
Earth11,000 milesin space.Therewillbe21 satellitesinorbitwhenthe
system
isfullyoperational.Three more satellites willactasspares, fora
totalof24. When allsatellites are in place,atleastfourofthemwillbein
view
nearlyanywhereonEarthtwenty-fourhoursa
day.TheOPSreceiver
requiresatleastthreesatellitestogivea"2D"
fix.(A 2Dfixis
yourposition
inlatitude/longitude. A3Dfixis
your
latitude/longitudeplusaltitude.)
When
itlocksontoatleastfoursatellites, itdisplays a3D fix.
Formore information, readyour
beacon receiver's manual.
SELECTUNITS OF
MEASURE
(SeetheSelect
UnitsofMeasure in thePlotter section ofthismanual.)
TRUEandMAGNETIC POSITION
Trueand
magneticnortharenotalwaysthesame.True
northisthe
top
of
theworld. It'swherealllinesoflongitudeconverge. Magnetic north isthe
locationourcompassespoint. Itliesseveral hundredmilestothesouthof
truenorth, atalocation in Canada.
Chartsareusuallylaidout
according
toaMercatorprojectionthatusestrue
north. Ifyouplot
acourse onachartusing theMercator projection,you'll
eitherhavetoconvert magnetic readingstotrueorusetruereadings.
TheAccuNav II candisplay navigation information inmagnetic ortrue.
Whenit'sturned onforthefirsttime magnetic isused.Toswitch totrue,
presstheMENUkey
while
aGPSscreenisdisplayed.Next,pressthe
key
nexttothe"CHANGEGPSSETTINGS"label. Nowpressthe keynextto
the"SELECTUNITSOF
MEASURE"label.Now
simplypress
the
keynext
tothe"BEARING"label.This
movestheblackbox
from"MAO" to"TRU."
Press thekey nexttothe"EXIT'labelwhen
you're
finished.
Asthe
receiverlocksontoeachsatellite,itcalculates
thedistancefromthe
satellite bymeasuring thelengthoftime
ittakestheradio
signal toreach
it. Each satellitehasan extremelyaccurate clockthattells the receiver
whenthe radio transmission started. Thereceiver compares that time
againstits own clock, thusit knows how long ittook the radio signal
(travelling
atthe
speedof lightl)
toreachit. If
you
knowtimeand
speed,then
youcan
calculate distance.Onceyouhavethisfromthreesatellites,then
thereceiver
candetermine position.
11
15 OK 01< OK OFF
13 OK OK OK OFF
02 OK OK OK ON
ë7 OK OK OK ON
26 BAD OK BAD ON
Ittakes threesatellitesto
determine position.
38 7
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ACCURACY DGPS (DifferentialGPS) BEACON RECEIVERSETUP
You may haveheardtalesofextraordinaryaccuracy
fromGPSreceivers.
TheDOD requiresaccuracyof10to15metersfromthesatellite system.
However, onlythemilitarygets
this precision.Theway the
militarykeeps
usandotherunauthorizedpeople from
using
themore
precisesystem
is
coding.Inotherwords,thedata
comingfromthesatellites isencrypted.
CivilianGPSreceiversuse"C/ACode."It's
accuracyisintentionallyworse
thanthemilitary's "PCode."Inthismanner, civilian usersworldwide can
benefitfromexcellent position fixes. Meanwhile, themilitary keeps the
most accurate systemaway
frompotential enemies. Theoretically, C/A
codecangiveaccurate positionfixes upto15meters.Thisismore than
adequate formost people.
However
(asofthis writing),themilitaryisn'tsatisfiedwithC/A's potential
accuracyin thehands of the world. So, it's degrading it further with
"Selective
Availability" orSA.Thisissmall, random errors intentionally
addedtothesystem so
youraccuracywilltypically
bewithin100meters.
Ofcourse, accuracyalso dependsontheangleofthesatelliteabovethe
horizon,
signal-to-noiseratio,thenumberofsatellites tracked atonetime
(themorethe
better),andotherfactors. Thesmallest rangeson
the
plotter
may
notbeusableiftheSAishigh. Thepresentpositionsymbol canmove
offthescreen even while
you'resittingstill.
Don'tletthisdiscourageyou,however. GPSbynaturehasmuch faster
updates thanother
systems (suchasLoran),and typically
ismuch easier
touse.
Accuracy,evenwithSAonisstill betterthanmost
other
navigation
systems. You've
purchased
oneofthefinest
navigatiorrinstruments
onthe
market
today. Wehope you'll enjoy
itformanyyears tocome.
TheEAGLEEGP-1 GPSModule
ThisGPSreceiver iscurrentlyusedinallEagleGPSreceivers. It's
small,
rugged,andfast.Thefivechanneldesign lets ittrackallsatellites in view
andacquire uptofive satellitesatonetime. Itsends
position information
totheAccuNav II onceeverysecond. By incorporating Rockwell'sGPS
receiver
technologywithEagle'sstate-of-the-artdesign
andmanufactur-
ingcapabilities, Eagle bringstotheconsumer themostadvanced line of
GPSmarine
navigation systemsavailable intheworld.
1'
You'll havetotelltheAccuNav II which beaconreceiver's datatoexpect
and setupthe
parametersforthatdata.Todothis, firstpress theMENU
key,
then
pressthekeynexttothe
"CHANGEGPSSETTINGS" label.Now
press the key nextto the "SELECT NMEA" label. Thescreen on the
previouspageappears. Pressthe
key
nexttothe
desired beaconreceiver.
The beacon receiver is selected, now you'll need to set it up forthe
frequency
andbitrateofthe stationyou'll beusing in your
area.
Repeattheabovesteps
to
getthe
NMEAscreenasshownonthe
previous
page.Now press
the
keynexttothe
"SETUPBEACON"label.Thescreen
shown below
appears.
The station frequency and bit
rateareshown onthe
rightside
of the screen. Press the key
adjacent tothe"INC FREQ"to
increase thestation frequency
orthe"DEC
FREQ"todecrease
it. Do thesame
forthebitrate.
Whenthestation
frequencyand
bit rate are adjusted to their
proper settings, press thekey
nextto the "EXIT" label. The
AccuNav II returns to the last used GPS screen. The letters "DGPS"
appearnexttothe "POSITION" on allscreens thatshowyour present
position, showing thatthebeaconreceiver isworking.
Toviewthestatusofthebeacon
signal,pressthe
MENUkeyuntilthefourth
menupageappears. Now
press
thekeyadjacent tothe
"DIFFERENTIAL
GPSSTATUS"label. Ifthebeacon receiver is receiving datafromthe
transmitterand isconnected properlytotheAccuNav II,a
screensimilar
to the one shown at right ap-
pears.
Thispageshowsthestation ID
number, its frequency
and bit
rate,the"health" ofthestation
(0 = best, 5 = worst), signal
strength (the higher
the num-
ber,thebetter),andthe
signal-
to-noiseratio(SNR).Thehigh-
ertheSNRnumber,thebetter.
pcn
8 37
fl15 OK OK OK OFF
fl13 OK OK OK OFF
tJ02 OK OK OK ON
It27 OK OK OK ON
26 BAD OK BAD OH
ah1
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SELECTNMEA
TheAccuNavIIsendsdataoutthewhitewireonthe
powercableaccording
tostandardssetby theNMEA(National MarineElectronicsAssociation).
This allows the AccuNav II to send position, depth, and navigation
informationto"listener"units, suchas
charting
instruments,autopilots,
and
othermarineinstruments.TheAccuNav IIusesthe
following NMEAdata
protocols: NMEA0180and0183.NMEA0180sendssteering information
only.It'suseful mainlyforautopilots.NMEA 0183 sends depth,position,
steering,speed, and more. Inordertousethisfeature,thewhitewire on
thepower cablemust beconnectedtotheNMEA data
input
ontheother
instrument.Seetheinstallationsectioninthefrontofthismanualforwiring
connection information.
The AccuNav II also has the
capabilitytoreceivedifferential
data froma beacon receiver.
Thisgivestheunitmuch better
accuracy
thannormal. Howev-
er, beforepurchasing and in-
stalling
abeacon
receiver,
make
certaintherearetransmitters in
the
area
you
wishtouse.Pres-
ently,
the AccuNav IIcan use
the Magnavox MRB-2A or
?NMEA 0180
F'MAGNAUOD0P3
SETUP BEAC0N
StarLink MX-50R. Please notethattheAccuNav II doesn't sendNMEA
0183 datawhentheMagnavoxMRB-2A beacon receiverisactivated.
NMEA SETUP
Once
you
connectthe
wiring properly,
theAccuNavIImust
betoldwhich
NMEA data formatto use. Consult the owner's manual of the other
equipment to seewhich format it needs. Thenset the AccuNavII as
follows:
First,press
theMENUkey.
Next,press
the
keynexttothe"CHANGEGPS
SETTINGS" label.Nowpress thekeynexttothe
"SELECT NMEA"label,
Thescreen shownabove appears.
GETTING STARTED
Initialization -PowerOn
Inorderforthe
AccuNav
IItolockontothe
satellites, itmustfirstfindthem.
If
yousimply
turntheunitonandwait,
theunitwillfindthesatellitesbyitself
in15minutesorless.Thisiscalled"ColdStart."If
you
letitfindthe
satellites,
thetimedisplay willprobablybewrong,since itwillbeshowing UTCtime
orthetimeatGreenwich,England.However,allother
navigationdisplays,
includingthepositiondisplaywillbecorrect.(You
cansetthetimetoyour
localtime.)Tospeedup thesatelliteacquisitionprocess, you caninitialize
theAccuNavII or "tellit where it is" the firsttime it's turned on. This
initialization process isusuallydoneonly onceandrequiresthe
following
data:
1. Present
position inlatitude/longitude
2. Elevation above sealevel (altitude)
3.Today'sdate and time
Theunit
usuallyonly
takesafewminutesorlessto
findthesatellitesonce
it'sbeen initialized bytheuser.
Afterthe
powercable andGPSantennamoduleareinstalled,press
theON
key,then press
theMENU key.Now
pressthekeynexttothe"CHANGE
GPSSETTINGS" label.Finally,press thekeynexttothe"SET LAT,LON,
ALT,TIME,DATE"label.Thescreen shownbelow appears next.
ThisistheGPSsetupscreen.
The settings now in use are
shownatthe
top
ofthe
display.
If
you're using
the unitforthe
first time, these settingsare
probablywrongforyourposi-
tionandtime.To
change any
of
the numbers on this display,
simplypress
the
keynexttothe
arrow with thedesired label.
For example, to change the
local
time, press
the
key
nextto
the"CHANGE TIME"label.
LATITUDE N 36°08.852'
LONGITUDE 14 9E°SO.484'
ALTITUDE 1696
LOCAL TINE 10:17:23 PM
LOCAL DATE 1/03'1992_
ELATHAHGEAL
UANGETIMr
DATE
Thedataformat
currently
inuseshowsat
the
top
ofthescreen. Pressthe
key nextto the desired data output. Now press theCLEAR key. The
AccuNav IIwill return tothelastused GPSscreen andsend NMEA data
outthewhite wire onthe
powercable.
Note:If
youdon'tusethe"cold stari'feature,
then
you
willhavetochange
allofthe
settings
onthispagetotheircorrect
values. Inother
words, you
can'tsimply enter
yourpresentpositionandhavetheunitfindthecorrect
values by itself.
36 9
ENTLY
USING:
INMEA
OFF'MAGNAVOX
rHFIEA 0183'SlIqRLINK DOPS
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CHANGEPOSITION ARRIVALALARM
Useacharttodetermine your position ifyou don'tknow it. Thelatitude!
longitude that you
enterdoesn't havetobeextremely accurate.Typically,
if youentera position withinone degree of your present position, the
AccuNavII should quickly findyouractual latitudeflongitude.To change
yourpresentposition,first pressthe keynexttothe"CHANGELAT"label.
Thescreen shown belowappears.Usethedown
arrowkey to
change the
"N"to"5", if necessary. Next,
simply
enteryourpresent lati-
tudeusing thenumberedkeys.
Noticethatthe
positionentered
is in degrees, minutes, and
hundredths of a minute. (Not _____________________________
seconds!) Ifyou make amis-
take, press theleftorright ar-
rowkeys tomovetothenum-
berin the latitude that needs _________________________
changThAft rthelatitudeas LccEPT
nexttothe "ACCEPT'label.
Nowpress thekeynext tothe
"CHANGE LON" label. The black box will be next to the"E" on the
longitude. Again, usetheupordownarrow keys
toswitchthe"E"to"W"
or west longitude, if necessary. Now enter the longitude using the
numbered keys. Becertaintoenterazero "0"asthefirst numberinthe
longitudeifit'sless
than100
degrees!Afteryou've
enteredthelast
number,
press thekeynexttothe"ACCEPT'label.
CHANGE ALTITUDE
Toenter
yourpresent altitude,pressthekey nexttothe"CHANGEALT"
label.TheAccuNavIIneedstoknow
your
elevationabovesealevel.(Not
yourheight
abovethe
ground.)Again, anapproximation isusuallysuffi-
cient.Usethe numberedkeystoenteryouraltitude data. Press the up
arrowkeyifyour altitudeisbelowsealevel. For
example, supposeyou're
in Death Valley andthe
spotyou'restanding inis35feetbelowsealevel.
Youwouldneedtoenterthe numbers"35",then
presstheuparrowkey
to
change
itto-35feet.Pressthekey nexttothe"ACCEPT" labelwhen
you're
done.
CHANGE TIME
Tochange thelocaltime(thetimeatyourposition), pressthekey nextto
the
"CHANGETIME"label.Thescreenshown atthe
top
ofthenext
page
appears.
Thearrival alarm soundsatonewhen
yourpositioniswithin thealarm's
radiusofa
waypoint.For example,
thealarmsoundsif
youcomewithin .1
mile
of
arecalledwaypointifthearrivalalarm'ssettingis.1 mile.Thealarm
is
adjustable from.01 to9.9 miles.
XTEALARM
TheXTE (cross trackerror)alarm soundsatonewhen
yourcross track
erroris greater than thealarm's setting. Changing the XTE alarm also
changes
theXTE range onthe
steering screen. Thealarm isadjustable
from0.0to9.9miles.
ANCHORALARM
Theanchoralarmsoundsatonewhenthe
presentpositionmovesoutside
a
preset
radius.For
example,ifyousettheanchoralarmto.1nauticalmile
(600feet), then thealarm will soundifyou
movemorethan600feetfrom
thelocationwhere
you
setthealarm.It's
adjustable
from0.01 to9.9miles.
CHANGING GPSSETTINGS
TheAccuNavIImustbeinitializedwhenit'sturnedonforthefirsttime. This
isdescribedatthe
beginningoftheGPSsectioninthismanual. However,
ifyouwishtochangeonly
oneof
the
parameters (suchastime),
usethe menu features in the
"CHANGE SETUP" menu. To
dothis, press the MENU key,
then press the keynext tothe
"CF-lANGE GPSSETTINGS"la-
bel.
Finally,press
the
key
next
to the "SET LAT, LON, ALT,
TIME,
DATE'label.Thescreen
shownbelow
appears.
LATITUDE N 36°08.852'
LONGITUDE U 95°5O.484'
ALTITUDE 1696
LOCAL TIME 3:27:16 AM
LOCAL DATE 8'03'2032
..
'CHANGELATRZflW"ZLT
==
aGE LONJINEM
frE
DATE
Using themenus onthisandfollowing menu pages,youcan change the
Initial Position,Time-Date-Time Offset, orAltitude without
affecting any
otherinitialization setting.Allofthese menusworkidenticallytotheones
described intheinitializationsectionatthe
beginningoftheGPSsection.
Afteryoumake a
change, theunitreturnstotheGPSorplotter
screen.
Youmay needtore-initializetheunitif
youmovea longdistance(over
100
miles)withtheunitoff. Inthisexampleyou
wouldneedtoenteranewinitial
position to helptheAccuNav IIfindthecorrect satellites quicker.
10 35
LATITUDE N 36008.852?
LONGITUDE U 96050.484?
ALTITUDE 1696
LOCAL TIME 10:17:23 PM
LOCAL DATE 1'03'1993
IUE ICKEYSIP
TO CHANGE LJALUE
fl UP="N" DN="S"
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blackboxmovesoverthenum-
bers on theright side. In the
exampleshownatthetopofthe
nextpage, the arrival alarm is
selected.
Nowpress thekeynexttothe
"CHANGE LIMIT" label. The
screen shown below appears.
The
currentalarmvalueshows
inawindow
onthescreen which
to.2mile,pressthe0
key,then
the2
key, then press the0key
again. When thedesired value
has been entered, press the
keynexttothe
"ACCEPT' label.
The
unitreturnstotheALARMS
screenas
shownbelow. Notice
that the alarm has automati-
cally
been
turnedon. Ifanalarm
isoff,and youadjust it,theunit
automatically turns iton.
Now
youcan
change any
other
alarm orpress the key nextto
the "EXIT" label to leave the
alarm menu.
You can return to this alarm
screen
at
anytime
toadjustany
alarm,
turnone
off,
or
allofthem
on, as desired. Each alarm
works
andadjustsindepentlyof
theothers.
Adescriptionofeach
alarm follows.
Usethenumber keys toenter
the time. Press the up arrow
key to change thetime from
AM to PM orthe downarrow
keytochange fromPM toAM.
Pressthekeynexttothe"AC-
CEPT" labelwhen you're
fin-
ished.
CHANGE DATE
To enter today's date, press
thekeynexttothe"CHANGE
the key nexttothelabelthat
youneed tochange. Ifevery-
thingis correct, pressthekey
nextto the "EXIT"label. The
unitwill switch
tothe position
screen and start
searching for
thesatellites currently
inview.
Itshouldfindthesatellites and
showaposition in afewmin-
utes.
COLDSTART
WhentheAccuNav IIisturned
thereceiver.
ARRIVAL_ON OFF
<TE
p
NCH0 flF4 Itlil
I H
IT CHANGE LI1Ij
is labled "OLDVALUE"
LATITUDE
LONGITUDE N 36*08.852'
W 95°5O.484'
ALTITUDE 1696
LOCAL TIME 10:17:23
LOCAL DATE 1/03/1993
L41
WNUMERIC KEYS
TO CHANSE VALUE
'AM"DN'PM"
Usethenumberedkeystochange
thealarm's setting,then
press
the
key
nexttothe"ACCEPT"labeltoenterit. For
example,
tosetthearrivalalarm
E>IT IaISACcEPT.
DATE"label.Thescreen shown belowappears.Enterthedate
using
the
numberedkeys. When you're finished, press
thekey"ACCEPT" label.
The
numbersatthetop ofthescreenshouldbecorrect.
If
theyaren't,press
1USE NUMERIC KEYS TO
ICHANGE VALUE. USE
I RIGHT ARROW TO
PA
rnLuro.lr
020
EPT
LATITUDE
LONGITUDE N 36°O8.862'
1.l 9S°5O.484'
ALTITUDE 1696
TIME 10:17:23
DATE 1/03/1993
TMERIC
KEYS
CUALUE
Remember, ifyouneed toset ___________
analarmtoless thanone (1),enterazero first.Forexample, tosetthe
arrival alarm to .5miles, pressthe following numberkeys: 0 50.
I ACEPT
onforthefirsttime "out ofthebox", itautomatically sends
a"cold start"
messagetotheGPSreceiver.Youalsocansendacoldstart
message to
Iftheunitcan'tlockontothesatellites usingthedatayou've
given
it, orif
ithastrouble
findingthe
satellites,perhapsitisusing
the
wrong data.This
canhappen ifyou'veentered the wrong databyaccident. Forexample,
givenit
east
longitude insteadofwest. Orif
you've
moveda
long
distance
withtheunit
turnedoff.
Tosendacoldstart
messagetothereceiver,press
theMENU key.Now
pressthe
keynexttothe"CHANGEGPSSETTINGS"label.Finally,press
thekeynext
tothe"GPS "COLD"START"label.Theunit
willbeginacold
start
technique tofindtheavailablesatellites. It
should lockontothem in
15minutesorless.Remember,whenitdoes,your
localtimeand possibly
34 11
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date displaywillprobablybewrong. Usethemethod shown abovetoset ERASINGAROUTE
thetime and datetotheir proper local settings. Oncethis isdone, an
internal clockwillkeep thecorrecttime, evenwhentheunitisturnedoff.
The GPSsystem updates this clockwhenthe unit is lockedon to the
satellites.
POSITION/NAVIGATION DISPLAYS
TheAccuNavIIhasa
positionscreen, navigationscreen, plotter,steering
indicator, and a satellite information screen. Thesedisplays were de-
signed
toshowthemost
importantdata. However,youcancustomize all
ofthem(except thesatellite positionscreen) tosome extent
throughthe
"Change Display"featureonthefirstGPSmenuscreen. (Thereareother
screens thatcanbecustomized byusing theWindows feature. Seethe
Windows section formore detail.) Tocustomize these screens, seethe
"Customize" section.
IMPORTANT!
Ifthedatashown in
digital numbersonanyscreenonthisunitis
flashing,
thenitmeans thatdataisinvalid.Donot relyonthatdata ifitisflashing.
Forexample, iftheposition display isflashing,thentheunithaslostthe
satellitesand
hasn'tre-aquired them. Thepositionthatisflashing isyour
lastknownposition,notyourpresentposition!Donot
navigate
withthisunit
untilyou have foundthereasontheunithaslostthesatellites!
Eachofthe
following screensisavailable by
first
pressing theMENUkey,
then pressing the key next to the desired screen label. A detailed
description ofeachscreen follows.(Press theMENU keytwicetoseethe
SatelliteInformationmenu.)
SATELLITEINFORMATION SCREEN
Thesatellite information screenshowstechnicaldataabouteachsatellite
inview.TheAccuNav
IIhasafivechannelGPSreceiver. Dataoneach
channel isshown atthe
topof
thedisplay. Thechannels
are __________________________________
numberedone
through
fiveon
theleftside ofthescreen. Ev-
ery
satelliteintheconstellation
hasa number assigned to it,
calledthePRN.ThePRNisthe
first number in the channel's
row.TR1C stands for"track." If
theAccuNavII istracking the
satellite,thena"T"isplacedin
thiscolumn. If
theAccuNavllis
Tocreatearoute,firstpresstheMENU key. Next, press thekey nextto
the
"More"label.Now
press
the
keynexttothe"ROUTEPLANNING"
label.
Routenumberone appears on the right sideofthe screen. Thelistof
waypoints used in the route are shown beneath the route numberand
name. Ifyou wishto erase adifferent route, press thekeynexttothe
"÷RTE"or"-RTE"labels tocycle
throughtheavailable routes.
Afteryou've
selectedthedesired route,
press
the
keynexttothe"ERASE
RTE"label.Thiserasesthe
routefrom memory.Finally,pressthekeynext
tothe"EXIT" label. ThisreturnsyoutotheGPSdisplay.
GPSALARMS
TheAccuNavIIhasthreeOPS
alarms. Oneisanarrivalalarm
that sounds when you come
withina preset distance to a
waypoint. Thenextis across
track erroralarm that sounds
whenyou
moveoffcoursemore
than thealarm'ssetting. The
lastalarmisananchoralarm. It
sounds whenyou move out-
side ofa presetradius. All of
thesealarms are setidentically.
IU
AL ON 0.10
>TE
: ON 0.50
Toadjust aGPS
alarm,
press
theALARM key.Thescreen shown above
appears.
Toturnanyalarm on, pressthekeynexttothedesired alarm's
labeluntil theblack boxmovesto"ON", asthescreen belowshows.To
change
analarm's setting,press the
keynexttothe
desiredalarmuntilthe
c
TE.50
"IN 2.1fl
.
.rii—s :iau &i
13 T 600:31101 35
12 1 s 1 270132401 29
'O'2 rT 1tjjofl
24 1 T 250?3030t 42
14 1 T I 19°i ?4°T 35
HOOP 1.69 13 02 06 24
GOOP 3.87
POOP 3.33
TOOP 1.98
UDOP 2.87 _____________
12 33
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IMPORTANT!
Turningthearrival alarm off preventstheAccuNavll fromsequencingto
thenextwaypoint intheroute.This,ineffect,turnstherouteoff.
However,
theunitwillstill show navigationdatatothecurrent
waypoint intheroute
atthetimethearrival alarm wasturned off.
CANCEL NAVIGATION
To stopthe AccuNav II from navigatingto waypoint or navigating toa
waypoint inaroute, press theMENUkeytwice. Nowpressthe keynext
tothe"CANCEL NAVIGATION"label.This
stops
allnavigation.
NOTE:
Canceling navigation does not erase the route or anywaypoints from
memory.It merelystops
theAccuNav IIfromnavigating.
MODIFYINGAROUTE
Anypart
ofaroutecanbe
changedatanytime. For example,suppose you
havearouteconsisting ofwaypointsnumber 1,2,and3andyouwishto
changewaypoint numberatowaypoint
number5.Simplypressthe MENU
key,then press the
key nexttothe"More" label. Next,pressthe keynext
tothe"Route Planning" label. Finally, pressthekeynexttothe"Recall
Route"label. Route number one appearsontheright
side ofthescreen.
Thelistof
waypointsusedintherouteareshownbeneaththeroutenumber
and name.
Using the down arrow key,
movetheblackboxto
waypoint
number 3. Nowpress the key
next to the"CHANGE" label.
Use the numbered keys to
change the waypoint from3to
5. Next, press the key nextto
the "ACCEPT" label. You've
changedthe waypointfrom
3
to
5.Finally,pressthe
keynextto
the"EXIT" labeland you're
fin-
ished.
.OUTE it 1
tJSIEL. NAME: JPiYS COLJE
— PIE
RSE
!1 BUOY1
2 BUOY2
SANDY PT
i
Remember,anypadoftheroutecanbechanged atanytime.
searching
forthesatellite,thena"S"appears.ELVistheelevation(height)
ofthesatellite abovethehorizonfromyourposition.AZMistheazimuth
ordirection ofthesatellite from
yourposition. For
example, iftheazimuth
ofasatelliteis180degrees,thenitisduesouth.SNRisthe
signal-to-noise
ratio.Thistells
you
howstrong thesatellite's signalis.The
higherthe
SNR
number,thebetter.
Thesatellitesthatarevisibleinthe
sky
from
your
position
areshowninthe
lower
rightcornerofthescreen underthe"VISIBLE SATS" heading.
Inthelower
leftcornerofthescreen aretheDOPS
displays.Theseshow
you
the"DilutionOfPrecision"(DOP)forthe horizontal(1-IDOP),geometric
(GDOP),position(PDOP),
time
(TDOP),andvertical(VDOP). TheGDOP
isthecombination valueofHDOP, VDOP, and TDOP.Thesmaller the
GDOP's
numberis,thebetter.TheGPSreceiverselectssatellitesbased
onGDOP,therefore
italwaystriestousesatellites thathavegood DOP
values. These
depend ontheazimuth andelevationofthesatellite, and
anyground based obstructions.
Remember,thesmallerthenumber-thebetteronalloftheDOPs.
POSITIONSCREEN
Theposition screen automaticallyappears aftertheAccuNavIIisinitial-
izedor
you
canviewthisscreenat
any
time
bypressingthePUS key.The
positiondisplayshowsyourpresentposition,course overground(COG),
crosstrackerror(XTE), bearing (BRG),andlocal time.
Your present position displays nearthe topofthescreen in latitude!
longitude coordinates. Thisis
minute. For example, on this
page,
the
presentpositionis31
degrees,
8.642minuteslatitude
and 82 degrees, 50.853 min-
utes longitude. Below the
presentposition
ontheleftside
is the Bearing to Waypoint
(BRG) display. This is ex-
pressed in degreestrue or
magnetic, depending on the _____________
mode theAccuNavIIis in.To
the right ofthe Bearing is the
CourseOver Ground (COG)
display.
32 13
shown in minutes, and thousandths ofa
UU
N 36°08.856'
U 95°50.496'
jOM287OM
2:S:32 PMHIL 0101 mi
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Atthebottomofthescreen are theLocalTime and Cross Track Error pressthe
key
nexttothe"CHANGE"labelandenterthewaypointnumber
Displays. Pleasenotethat youmust recall awaypoint tousethe Bearing
andCrossTrackErrordisplays.
STEERING SCREEN
The steering screen shows a pictorial view of your boat and course
travelled.ThisiscalledaCourseDeviationIndicatororCDI. Italsoshows
DistanceToGo(DTG), SpeedOverGround(SOG), BearingtoWaypoint
(BRG),andCourseOverGround (COG).PresstheSTEERkeytoviewthis
screen.
Yourpresentposition
isshownbythe
arrow.Thearrowshowsthedirection
the boat isheading relative to ________________________________
the waypoint. In theory, ifyou _______
steertheboatwith thearrow _____ _______
always pointing towards the
waypoint,then you
willarriveat ___________________________
the waypoint. The solid line ____________________________
extendingfromthe arrowisyour ______________ _____________
trackorpath you've taken. To
travel
directly
to
awaypoint,try ____________________________
tokeepthearrow onthecenter
line.Thewaypoint isdepicted
byaboxatthetopoftheCDI ___________________________
display. As youapproachthe
waypoint,thearrowandtheboxwillmove
closertogether. If you
travel
past
the
waypoint, thewaypoint's boxwill movetothebottom ofthe display.
The numbers on thetop left side ofthe screen are distance markers,
showingtheremainingdistancetotherecalledwaypoint. Ifthenumbers
haveablackbox
surroundingthem,thenthedistancemarkersisshowing
thedistanceFAST the waypoint. In otherwords, ifthenumbers are
surrounded by ablack
box,then you
have
passedthe waypointandneed
toturnaround.
Thenumbers immediately belowtheCDIaretheCDIrangeinmiles.This
givesyouanideaofhowfaroffcourse youare.Forexample, ifthearrow
ishalfway between thecourse line and theoutside left line andtheCDI
range is0.5
miles,then
your
crosstrackerroristothe
left0.25miles.The
CDIrange isthesame astheCDIalarm setting. Seethe
sectiononGFS
alarmstochange theCDI range.
Usingthedigital displays atthebottom ofthe screenwiththegraphical
forthesecondwaypointintheroute.Continueenteringthe
waypoints
until
allofthe
waypoints havebeenentered fortheroute.Thenpress
thekey
nexttothe"EXIT" label.Thissavesyourroute inmemory.
IMPORTANT!
You mustselect waypointsintheorder
they
aretobeusedintheroute.In
other
words, supposeyou
wantaroutethatconsistsof
waypointnumbers
1,3,and 5.However,youwishtotravel to3first,
then1,andfinally 5.In
thiscase,youmustselectwaypoint3,1,and 5inthatorderwhen making
theroute.
FOLLOWING AROUTE
Tofollowaroute, press the MENU key, thenpressthekey nexttothe
"More"label.Next,press thekeynexttothe"RoutePlanning" label.
Finally,
press
thekeynexttothe"Recall Route"label. Thescreen shownbelow
appears.Routenumber oneappears ontherightside ofthescreen.The
listof
waypointsusedintherouteareshownbeneaththeroutenumberand
name. Ifyou wishto recall a
different route, press the key
nextto the "÷RTE" or "-RTE"
labelsto
cyclethroughtheavail-
ableroutes.
Afteryou've selected the de-
sired
route,
you'll
noticeablack
box surrounding the first
waypoint in the route. Thisis
the
startingwaypointbox.If you
wish
tostart
theroute
usingthe
first
waypoint inthe
route,sim-
ROUTE * I
+ RTE WflME: JAYS COVE
— WJPQI.1
—RTE 2BUOY2
Sb%ZZ 3 BUOY 3
VERSE
plypressthekeynexttothe"START RTE"label.
However,ifyou
wishto
starttheroute using adifferentwaypoint,simplyusethedownarrowkey
tomovetheblackboxtothedesiredwaypoint number.Thenpress thekey
nexttothe"STARTRTE'label.
Tofollowaroute backwards,
pressthe keynexttothe"REVERSE"label.
Forexample, suppose youhavethreewaypoints in aroute and they're
numbered 3,6, and 2. Ifyoutravelforward
through
theroute, theunitwill
show
navigation
datato
waypointnumber3
first,
then
6,and
finally
2.If
you
travelbackwardthroughthe
route,theunitwillstartwith
waypointnumber
2first,then6,andend withwaypoint number
3. Nomatterifyoutravel
forwardorreverse
throughtheroute,whenyoureach the last
waypointin
the route,thearrival alarm soundsuntil youturnitoff.
14 31
flu' ________
'in
___ 22.02
278° 4 298° N
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Thismenulets you selecttheroutenumber, nametheroute,andchoose
the
waypoints usedin theroute.
Name
aRoute
Toassign anametoa
route, pressthekey nexttothe"-i-RTE"or"-RTE"
labeltomove through the listofroutes.When thedesired routenumber
appearsin thewindowatthe top
ofthe
screen,pressthedownarrowkey
untiltheblackboxmovestothe"NAME"position.Nowpress
the
keynext
tothe"CHANGE" label. Thescreenshown below appears.
Usethekeys on both sides of
the
screentoenterthe waypoint
name. For
example,tonamea
route
"REEF1",press thenum-
ber"4"keyrepeatedlyuntilthe
letter"R"appears in the win-
dow.Next, press the right ar-
row
key
tomovetheblack box
tothenextletter
position.Now
press
the
"1"key. Theletter"E"
appearsonthescreen. Repeat
this process until the entire
name hasbeen written on thescreen. Now press the keynexttothe
"ACCEPT" or"ENTER" label.TheAccuNav II returnstotheroutemenu.
Youcannow enterthe
waypoints used intheroute.
WaypointSelection
Ifyou've nameda
route,
theblackbox
shouldbeonthe"0"atthe
top
ofthe
screen. Ifnot, movetheblack boxtothe"0" usingtheupordownarrow
keys.Nowpressthekeynexttothe
"CHANGE" label.Thescreenshown
belowappears
Nowpressthe numbered key
ofthe
waypoint youwishtogo
to first in the route. For ex-
ample, if you want waypoint
number8tobefirst,
press
the
8
key. If you've named the
waypoint, itshows intheblank
spacetothe right
ofthe
waypoint
number. Next, press thekey
next to the "ACCEPT" label.
Thecursorshouldnowbe on
thesecondwaypointline.Again,
USE
NUMERIC
KEYS TO
CHANGE
UALUE
RTE# 6
NAME REEF1
..P
0
0
U
EXIT =iACCEP)
displayatthe
toplet youaccu-
rately steer the boat to a
waypoint.
NAVIGATION SCREEN
Use the navigation screen
when you're navigating to a
waypoint. It showsyour Dis-
tanceToGo(DTG),Bearingto
Waypoint (BRG), Local
Time,
Speed Over Ground (SOG),
Course OverGround (COG),
and CrossTrackError
(XTE).To
c a9*Ho5 Mifli
rwqi
4ivr
2:68:19 PHIHIL 021 MI
waypoint, then press the NAV key. A screen similar totheone above
appears.
CUSTOMIZESCREENS
The
digitaldisplaysonthebottomhalfofthePositionand
Steeringscreens,
plus
allthe
displaysonthe Navigationscreen canbechangedasdesired.
Toshow howthisisdone, we'llusethePosition screen asanexample.
Tocustomizethe Position
Screen,
menuscreen appears. Press the
DISPLAY' label. Thd unit re-
turns to the Position Screen
with a black box around the
Bearing (BRO) label.
The black box identifies the
Bearing box as "ready for
change."Tochange theBear-
ing display, press the up or ____________________________
downarrow keys toselect the
display
thatyouwantto show
insidethebox.
Inthisexample,we
changed
the
BearingdisplaytoDIG(DistanceToGo)
bypressing theuparrow keytwice.
h850
...'.
278 MI
-,•I
22.0MPH
usethenavigation screen, firstrecalla
first
press
theMENU
key.ThefirstGPS
key nexttothe "CHANGE POSITION
N 36°08.925'
U 95°50.386'
rr
850 4 197* H
2:69:15 PM1L 0.08 MI
30 15
NORMAL DISPLAY DISPLAY READY FORCHANGE
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Tochange another
digital dis-
play,press the leftorright ar-
rowkey. Thelabelinthenext
digital display
boxchanges as
youpressthe
arrowkey.Again,
press
the
upordownarrowkey
tochange the
display.
The digital displays available
foruseare:
BRG
Bearing
SOG
DTG
DESTWPT
POSITION Altitude
Route Name
Waypoint Name
TimeToGo
CrossTrackError
Timeatyourlocation
CourseOverGround
When youhavethe
displayarranged asdesired, press theCLEAR key.
This"locks"the
display.Everytime youswitchtothisdisplay,itwillappear
asyoudesigned it, unlessyou preset theunit
PLOTFER
Theplotter letsyousee
yourcourse
and directionoftravelonthescreen.
If you'verecalled awaypoint, the plotter shows yourstarting location,
presentposition, anddestination. However, youdonot have torecalla
waypoint tousetheplotter.
Theplotter alsocanshow
grid linesonthe display.These grid linesshow
latitudeand longitude linesthatcanhelpyouvisulizeyourposition orthe
location ofotherobjects.
Tousethe
plotter, simplypressthePLOTkey.Ascreensimilar totheone
atthe
topofthenext page appears.
The
flashing
crossisyourpresentposition.Thesolid line isyourtrack,or
path youhavejust
traveled.Thelargesquare isa
compassrosemarked
Nowpressthekeynexttothe
"÷WPT"or"-WPT" labeluntil
the desired waypoint number
appearsonthescreen.Whenit
does,simplypressthe
key
next
to the "GO TO WYAPOINT"
label.TheAccuNavIIreturnsto
thelastusedsonar,navigation,
orplotterscreen,showing
navi-
gationdatatothe
waypointyou
recalled.
*WPT
1NAME LJERO BROS
H 36009.869'
8IL0H hi 95037fl'
I....
jOT8(MILES) 12S
BRO (MAO) 86°
TUflT
I8EWPT#
ROUTES
Aroute
givesyouthe abilitytonavigateto
severalwaypointswithouthaving
tore-program
theunitafter
arrivingateach one.Arouteconsistsoftwoor
more
waypoints. Whenyou
travellona
route, theAccuNavIIfirstshows
navigation informationtothefirstwaypoint in theroute.When youreach
thefirstwaypoint,(signalledbythe
ArrivalAlarm),theAccuNav IIautomati-
callysequencestothenextwaypoint. Navigationinformationisshownto
this
waypoint andtheprocessrepeats.When you
reachthelastwaypoint
ina
route, thearrival alarm sounds untilyouturnitoff.
Therearefour
stepsrequiredtocreateand followaroute.First,you
must
createandname theroute. Next,selectthe
waypoints usedin theroute.
Thendeterminethe
startingwaypoint.Next,
tellthe
unitto
follow
theroute.
Finally,
theunitwill
askyou
if
you
wishtoruntherouteforwardorbackward.
After these steps are completed, the AccuNav II will start showing
navigation datatothefirstwaypointontheroute.
CREATING AROUTE
Tocreatea
route,
first
pressthe
MENU key . Next, press the
key nextto the "More" label.
Nowpress thekeynexttothe
"ROUTE PLANNING"label.
Finally, pressthekey nextto
the"SAVE/EDIT ROUTE" la-
bel.Thescreen shownatrightS
appears.
IQUTE# 1
—RTE
TE
TE
HG
NAME:
..
uc::::E:E
::::::g:::EEEFE-:SE:
::::::g:::E:E:E:EEEEE::
.....9...................
=l——— •ia
N 36°08856'
U 95°50.496'
.
27.8MIIH 287° M
PMHIL 0.01 MI
SpeedOverGround
DistanceToGo
DestinationWaypoint
Present Position
MAUIBATIOH Ih1FO
ALT
RTENAME
WPTNAME
110
XTE
LOCAL TIME
COG
16 29
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