Polaris Xr-5DC User manual

Model: Xr-5DC
The prime meridianruns from thenorth to southpole through Greenwich,England.
Magnetic North
Represent the directionof the northmagnetic pole fromthe observer's position.The direction a
compass points.
Navigation
The act ofdetermining the courseor heading ofmovement which willlead to theuser's destination.
Navigation Pointer
A quadrant witha arrow keptpointing to thedirection of destination.
Position Fix
The GPS receiver'scomputed position coordinates.
Prime Meridian
The zero meridian,used as areference line fromwhich longitude eastand west ismeasured. It
passes through Greenwich,England.
Time To First Fix(TTFF)
If user hasnot used thisGPS unit forseveral months, thealmanac data forthe satellites maybe out
of date. Theunit is capableof recollecting thisinformation on itsown, but theprocess can take
several minutes. Time to First Fix (TTFF) is the time it takes a GPS receiver to find satellites after
the user firstturns it on(when the GPSreceiver has lostmemory or hasbeen moved over300 miles
from its lastlocation).
VerticalLine
The short linewhich is silk-screenedvertically on theLCD panel symbolizinguser's heading.
Warm Start
Power-on sequence whena receiver alreadyhas valid almanacdata, but mustdownload ephemeris
data for eachof the satellitesused to establisha position fix.
Waypoints
Waypoints are locations saved in user's GPS unit. These are locations user may later want to return
to or review.
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POLARIS USER MANUAL
Instruction Manual

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* Since thedevice is designedonly as partof aid orreference for generaloutdoor activity, not forthe
condition requiring extremelyhigh liability, such as life conservation. It is user's responsibility to
judge the navigationalcapability of thesystem if theproduct is usedfor such purpose.
* Although theunit is meantto be waterproof,user should nottry to immerseit into wateror use itin
rainy environment.
* Do nottry to makeany modification toeither the mechanicsor the circuitrywithout any permission
from our distributor.
* User isrecommended to readthis manual beforeany use ofthis unit. Rememberto keep this
manual in aproper place forfuture reference.
* Information inthis document issubject to changewithout notice. SuperbSound Products Ltd
reserve the rightto change orimprove or modifyits products andmake changes tothe content
without obligation tonotify any personor organization ofsuch changes.
WARNING
Because of longperiod of shipping,the three accompanyingAAA batteries, whichare barely charged
for testing beforeshipping out, andmay discharge toempty when arrived,are not guaranteedto
power on theunit successfully afterbeing installed. Ifthis case doeshappen, you arerecommended
to use theaccompanying adaptor tocharge the batteriesbefore any use.In rare caseyou are
suggested to pressthe RESET buttonif such actof charging failsto turn onthe unit.
CAUTION
Differential GPS (DGPS)
An extension ofthe GPS systemthat uses land-basedradio beacons totransmit position
corrections to GPSreceivers. DGPS reducesthe effect of selective availability, propagation delay,
etc. and canimprove position accuracyto better than10 meters.
Dilution Of Precision (DOP)
A measure ofthe GPS receiver/satellitegeometry. A low DOPvalue indicates betterrelative
geometry and highercorresponding accuracy. The DOPindicators are GDOP(geometric DOP),
PDOP (position DOP),HDOP (horizontal DOP),VDOP (vertical DOP),and TDOP (time clock
offset).
Distance
The length betweentwo waypoints orfrom your currentposition to adestination waypoint. This
length is measuredin great-circle (overthe earth) terms.
Elevation
The distance aboveor below meansea level.
Ephemeris Data
Current satellite positionand timing informationtransmitted as partof the satellitedata message.
A set ofephemeris data isvalid for severalhours.
Greenwich Mean Time (GMT)
The mean solartime for Greenwich,England, which islocated on thePrime Meridian (zero
longitude). Based onthe rotation ofthe earth, GMTis used asthe basis for calculating standard
time throughout mostof the world.
Heading
The direction inwhich user isfacing or traveling.
Home 0
The starting locationwhich user marksas the firstwaypoint when undertakes a navigating travel.
Home Point
Previous location whichuser marks asa certain waypointwhen navigating.
Hot Start
The power-on sequencewhen a GSPreceiver has validalmanac and ephemeris data.
Latitude
A position's distancenorth or southof the equator, measured by degrees from zero to 90. One
minute of latitudeequals one nauticalmile.
Longitude
The distance eastor west ofthe prime meridian(measured in degrees).
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Introduction 3
Main Features 3
Overview 4
LCD Display Description 5
Button Function 7
Operating Polaris 8
Battery Installation 8
The First Use of Polaris 11
In-Depth Use of Polaris 11
Familiar With Polaris 11
Three-Point and Operation 11
GPS Navigation Pointer and Digital Compass 12
Distance 17
Speed 18
Local Time and GMT 18
Battery Status 19
Temperature Display 19
Application 20
Specification 21
Accessories 21
Glossary 22
Table of content

Introduction
Thank you for choosing this unique and exquisite handheld GPS receiver. The Polaris is
designed as an aid for outdoor activities like hunting, camping, hiking or other undertakings
which involve positioning. Equipped with it on travel, you are informed with your current
geographic position, direction leading to your destination, compass, distance passed,
speed, temperature, local and GMT time. Before clutching it in hand when you can't resist
the temptation of ousting, please go through the user manual, and you can go through the
world without getting lost. The user manual will introduce you to the functions and features
of the Polaris, and acquaint you with the procedures of how to use it.
Polaris Main Features
- The Polaris has 12 channels and a built-in GPS patch antenna, making it possible to track
12 satellites simultaneously and offer reliable positioning information.
- Integrated into this compact device is also a magneto-impedance censor, replacing
traditional mechanical compass while allowing the system to combine GPS data with
bearing of the digital compass to guide user in proper direction, either toward his destination
or back to his starting point.
- A large vivid graphic LCD, divided into different data fields, conveys detailed
environmental and geographic information to user on a single glimpse. Five user-buttons
are located on both side respectively,enabling owner to operate with ease.
- A temperature sensor is applied to provide extra and immediate source of information.
In addition, a microcontroller-based charging technique is also employed here to secure
a fast and safe battery recharge process.
- The Polaris is a very mechanically compact design, which makes it waterproof and,
thanks to inner suspensory structure, shockproof too. Another considerate feature is its
multi-portability, user can hold in hand, hang from neck or hook to clothes.
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Glossary
Acquisition Time
The time ittake a GPS receiver to acquire satellite signal and calculate the initialposition.
GPS
The Global PositioningSystem (GPS) is a satellite-based navigation system made up of a network of 24
satellites. GPS satellitescircle the earth twice a day in a very precise orbit andtransmit signal informationto
the earth. GPSreceivers take this information and compares the time a signal was transmitted by a satellite
with the timeit was received. The time differenceindicate how faraway the satellite is. With distance
measurements from afew more satellites, the receiver can determine the user's position. GPS receiver must be
locked on tothe signal of at least three satellites to calculate a 2D position(latitude and longitude)and track
movement. Withfour or moresatellites in view, the receivercan determine theuser's 3D position (latitude,
longitude and altitude).Once the user's position has been determined, the GPS unit can calculate other
information, such asspeed, bearing, track, trip distance, distance to destination.
Almanac Date
Information transmitted byeach satellite on the orbits and state (health) of every satellite inthe GPS
constellation. Almanac dataallows the GPS receiver to rapidly acquire satellites shortly after it is turned on.
Altitude
The elevation ofa certain geographic location.
Azimuth
See compass bearing.
C/A Code (Coarse/AcquisitionCode)
The standard positioningsignal the GPS satellite transmits to the civilian user. It containsthe information the
GPS receiver usesto fix its position
And time, andis accurate to 100 meters or better
CEP
Circular Error Probability,
Cold Start
The power-on sequencewhere the GPS receiver downloads almanac data before establishing a position fix.
Compass Bearing
The direction tothe magnetic north of digital compass.
Coordinates
A set ofnumbers that describes your location on or above the earth. Coordinates are typically based on
latitude/longitude lines ofreference or a global/regional grid projection.
Coordinated Universal Time(UTC)
Replaced Greenwich MeanTime (GMT) as the worldstandard for time in 1986. UTC uses atomic clock
measurements to addor omit leap seconds each year to compensate for changes in therotation of theearth
Current Point
User's current locationwhich will be marked as a waypoint
Deviation Angle
A signed valuewhich depict the degrees user's traveling off desired coursewhen navigating. Ifuser departs
from the desiredcourse to its right side, a negative angle will appear; if userdeparts from thedesired course to
its left side,a positive angle will appear.
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Overview
Figure 1: OuterCase Description ofPolaris
Figure 2: InnerBody Description ofPolaris
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Specifications
GPS Receiver:
Acquisition Time:
L1 band (1575.42MHz),
C/A code, 12-channel
Hot start: <10sec
Warm start: < 40sec
Cold start: <120sec
Update Rate: 1 Hz, continuous
Accuracy:
Antenna:
Physical Size:
Power:
Battery Duration:
Temperature Range:
Position : 10m CEP S/A off
Velocity : 0.1/sec S/A off
Time : 1ms
Built-in patch
131.4mm (H), 61.8mm (W)
28mm (D),
Three 1.5V AAA Batteries
16 hours
00
-15 C to + 70 C
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Specifications

LCD Display Description
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Application Example ofPolaris
Example one Navigating through a short distance (about 180 meter) to a destination with a
difference in latitude and longitude of 0.1minute fromthe starting point.
Procedure:
1. Take the unitoutside in anopen area, press "Power" button to turn on the unit;
2.Calibrate the digital compass (refer to OP8 at page 15), a process which is not necessary if
done before;
3. Mark downyour current location as Home 0 or starting point (refer to OP1at page 9) when the
unit obtain thefirst position fix.(refer to AppendixTTFF);
4.Input the latitude and longitude of the destination (refer to OP5 at page 10): just increase or
decrease the currentvalue by 0.1minute.
5.Move in pointingdirection of theNavigation Pointer.
6.On approaching the destination (10 meter CEP), press "OK" button when the arriving alarm
sounds.
Example Two Navigating through a long distance to a purported destination and on the way
mark down severallocation and calculatethe distance passed.
Procedure:
1.Take the unit outside in an open area, press "Power"button to turnon the unit;
2.Calibrate the digital compass (refer to OP8 at page 15), a process which is not necessary if
done before;
3.Mark down your current location as Home 0 or starting point(Refer to OP1 at page 9) when
the unit obtainthe first positionfix. (refer toAppendix TTFF);
4.Input the latitudeand longitude ofthe destination (referto OP5 atpage 10);
5.Under the guidance of the navigation pointer, move as far as 50 meters from the starting point
and mark downcurrent location asHome 1(refer toOP2 at page9);
6.Continue for another50 meters andmark down Home2;
7.Show the justpassed distance (referto OP8 atpage 15)
Note: latitude and longitude of the destination must differ from that of Home 0 at least
0.02minute or it may cause the Polaris to trigger the arriving alarm without user's moving
which result infailure to stopthe alarm by pressing "OK" button. If such condition do happen,
just walk wayfrom the pointas far as15meter and press "OK" Button.
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Figure 3: LCDData Field Description
POLARIS USER MANUALPOLARIS USER MANUAL
Home Point Icon,acting as awaypoint indicator, showing the total
number of waypoints.When installing thebattery for thefirst time, itis
in zero state,indicating no waypointsaved before.
Current Point Icon,functioning as keyto mark user'scurrent location
as a waypoint,a process whichwill make theHome point iconcount by
1.
Destination Icon, usingas a gatewayto input aspecific destination
(latitude and longitude).
Latitude Data field,after a successfulstart (the firstposition has been
fixed or GPSsignal icon becomestable), always displayuser's
current latitude; beforethat it keepdisplay the latitudeof the last
position fix.When installingbatteries for thefirst time andbefore the
first position fix,thisfield keep showingzero degree.
Longitude Data field,after a successfulstart (the firstposition has been
fixed), always displayuser's current longitude;before that itkeep
display the longitudeof the lastposition fix. Wheninstalling batteries
for the first time and before the first position fix, this field keep
showing zero degree .
GPS signal icon, acting as a position fix indicator. If blinking, means
that the unitis tracking theGPS signal, yetfails to obtainposition fix;
if stable, meansthat the unithas pinpoint currentlocation and obtained
the position fix.
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Of 15 degrees of longitude centered upon a central meridian. This central meridian for a zone is
defined in terms of its position relative to a universal reference, the GMT (Greenwich Prime
Meridian). In otherwords, the centralmedian of eachzone has alongitude divisible by15 degrees.
The number of hours that must be added or subtracted from local civil time in the zone to
Greenwich time dependingon East longitudeand West longitude.
Battery Status Icon
Just below the altitude data field locates the battery status icon. Capacity of batteries in use is
divided into four scales, with icon Signifying full, empty. However it's not necessary for
user to recharge the batteries when batteries status icon is empty. The Polaris incorporates low-
battery shutdown technology in its hardware, at the moment when remaining power can not
sustain the wholesystem, the unitwill automatically turnoff and save all data.
Since Polaris can be power-sourced both from rechargeable type of batteries, such as NiMH/
NiCd and Non-rechargeable type as Alkaline, it's recommended to pay enough notice to the type
of battery. Remember to push the charging switch to lower side when installing non-rechargeable
battery.
To charge, user should make sure rechargeable batteries are in use and charging switch in the
upper side. When batteries is charged to full, Icon. Will keep blinking, system will
automatically reduce charging current to a very low value so that no damages will be caused when
user fail toremove the charging plug fromthe charging port.
Figure 13: charging process Figure14: Thermometer
Thermometer
Figure 14 illustrates the Polaris's thermometer which is divided into two graded bars with
different range of temperature joined at 24 Celsius degree. The left signifies the celsiur scale from
ten below zeroto 24 degreesabove zero whileright signifies from25 to 60degree above zero.
POLARIS USER MANUALPOLARIS USER MANUAL
Navigation pointer,If a specificdestination has beeninput, the arrowof
the pointer willkeep pointing inthe direction leadingto the destination.
When installing batteriesfor the firsttime and failingto input a
destination, navigation pointerremains inactive, astate in whichthe
arrow disappears andthe four axesstay right andstable while centered
data field showsthe user's orientation.
Compass icon-after calibration,the arrow keepspointing to the
geomagnetic north. Wheninstalling batteries forthe first timeand
failing to calibrate,it remains fixedin NW, a character centering in the
ring of navigationpointer.
Thermometer Icon, performingas atmosphere temperatureindicator,
with the leftone showing temperaturefrom -10 to24 degree inCelsius
or 14 to76 degree inFahrenheit, the rightone showing from25 to 60
degree in Celsiusor 77 to140 degree inFahrenheit.
Distance data field,working as anodometer and straightline distance
calculator. Wheninstalling batteries for the time and failing to input a
destination before, itwill not recordthe distance usertravel and remain
showing zero. Onlywhen a certaindestination is inputdoes the
odometer start recordingthe distance thatuser travel, andat
the same timecalculate straight linedistance between startingwaypoint
to destination ,and also straightline distance betweenstarting
waypoint to usercurrent position .
Local time clock,acting as thetype in commonuse, hour,minute and
second of whichcan be setor calibrated accordingto GMT. When
installing batteries forthe first time,it runs fromzero.
Note: When in useor because of low battery shutdown, removing batteries
from the unitfor a shot time will not cause losses of geographic information,
navigational and timingdata,however force the local time clock to stop running
and therefore causea delay of time slot when reinstalling batteries to the unit.
Greenwich Mean Time, after a successful start (the first position has
been fixed), synchronizethe time retrievedfrom GPS satellite
transmitted data whichis in accordancewith the universaltime
coordinate. If GPSsignal fails toreach the unit(or GPS signalicon
start blinking), itstop running andkeep showing thetime, until having
tracked the GPSsignal again.
Speed data field,functioning as speedometer, displaying the instant
speed of theunit after asuccessful start.If GPSsignal fails toreach the
unit (or GPSsignal icon startblinking), the valueof it willfail to
reflect the realspeed of theunit until havingtracked the GPSsignal
again.
Satellite Icon, aftera successful, thenumber of itindicates how many
satellites are beingtracked. As soonas GPS signalis obstructed from
reaching the unit,all the iconwill disappear fromthe display.
Battery icon, performancesas remaining batterypower indicator with
icon signifying fullpower, emptypower.
Altitude data field,after a successfulstart (the firstposition has been
fixed), always displayuser's current altitude;before that itkeep display
the altitude ofthe last positionfix. When installingbatteries for thefirst
time and beforethe first positionfix, this fieldkeeps showing zero.
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Buttons Function
1. Mono Keying
, 'Up' and 'DOWN'button: In busy state(certain icon ofLCD is blinking,waiting for
key-entering) press 'UP'button or 'DOWN' button to increase or decrease digit number. In standby
state (no iconblinking or nokeying for atleast 3 seconds),presses 'UP' or 'Down' button toselect
one of thefive icons showedin the followingdiagram. Selected iconwill be blinking, indicating
that this datafield is beingactivated for datainput.
Figure 4: ACycle of HighLighted Icon in Busy State
-- The SET button is used to activate a data field for a data input. In standby state, pressing the
button for 3seconds will commencedigital compass calibration.
-- The OKbutton is to confirm a data input and quit. Also it can cycle you through data field in
normal state. ( In standby state, pressing and holding the button will start the Courser function in
case of noMIIC included. )
-- Pressing and holding the POWER button will turn the unit On/Off. Pressing and releasing
will also igniteor darken displaybacklight.
2. Dual keying
+ Press and holdthe two buttonssimultaneously for twosecond to shiftmeasurement unit.
+ Press thetwo buttons fortwo seconds totoggle GPS navigation pointer pointing function:
pointing to Point (n-1) (previous point of current point, position of this point has been marked
before) or pointingto Destination.
+ Press the two buttons for two seconds to toggle GPS navigation pointing function:
pointing to Point (n+1) (next point of current point, position of this point has been marked before)
or pointing toDestination.
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OP9---Use "Up"or "DOWN"button to highlightthe distance icon
(refer to S4in figure4), pressand release "SET"button, distance icon will shifted to
, while thedistance will correspondto it.
___ cumulative distance between starting point Home 0 to current point Home N. During
navigation, to show suchdistance just actlike OP9.
Note : Inaccuratedistance will resultif GPS signalis lost duringnavigation.
Speed
With GPSsignal being acquired(GPS signal icon become stable
Instead of blinking)the speed datafield displays theinstant speed relativeto the ground.
Note: the valueof speed willRemain
unchanged at themoment of losingGPS
signal until reacquiringGPS sigal.
Figure 10: Speed Data Field
Timer 1 and Timer 2
Timer 2 displays Greenwich Mean Time or GMT, The value of Timer 2 will stop to run at the
moment of losingGPS signal.
Timer 1 is similar to the type in common use. Hour, minute and seconds of it can be set and
reset.
Op10 ---To set Time 1, press "UP" or " DOWN" button to highlight Timer1 icon (refer to S5 in
figure4), then press and release "SET" button to enter into data field, then us "UP" and
"DOWN" button tochange the digitsof hour,minute and seconds.
Timer 1 can also becalibrated with GMT from Time 2.
Op11 ---to calibrate Time 1, press "UP" or "DOWN" button to highlight Timer 1 icon, then press
"SET"button for threeseconds.
Such process will correct the value of minute and second according to GMT. Hour of it is
derived from offsetting GMT with the longitude of current position. GMT is collected from
NMEA sentence retrieved from the GPS receiver module. Since the world is divided into 24 major
civil time zonesof equal width.Each zone wouldhave an east-westdimension
Figure 11:Timer1 Figure12: Timer 2
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POLARIS USER MANUALPOLARIS USER MANUAL

Operating Polaris
The Polaris unit operates on three AAA batteries , which are located on the back of the
inner body ofthe unit. Alkaline,rechargeable NiCad and NiMH can all be used.Three
AAA NiMH batteries are accompanying the unit together with a adaptor.
If batteries havebeen installed whenarrived, please remove the plastic current-
insulating flake.
Battery Installation
1. Hold the upper side of the unit with one hand. While pressing the two flank buttons
with thumb andindex finger ofanother hand, pull and separate the unit into twoparts,
the upper partwhich is fastenedwith inner body, and thelower part;
2. Use acoin and screw off the metal cover on the back of the inner body, and then insert
the batteries observingproper polarity;
3. Screw on the metal cover, slide the inner body into the outer case until the buckles being
firmly stuck;
The first battery installation powers on the unit without pressing any button as the
screen display somegraphic icon, eitherstatic or dynamic. Since the batteries are barely
charged to activate the device, energy stored in them is not enough for long use. You are
recommended to charge the battery for outdoor use.
However you should press and hold POWER button to turn off the unit before the charge
in order tospeed charge process and not to discharge wastefully.
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8
9
The difference between the two pictures in Figure9 is: the left one depicts the an inactive
Navigation Pointer with the centered characters denoting user's heading (or compass azimuth),
while the rightone depicts an active Navigation Pointer with the centered signed digits calculating
the angle betweenuser's heading andthe direction leadingto destination.
Figure 9: Digital Compass Description
Compass Calibration:
Op8 Hold the uniton horizontal level,press "SET" button forthree seconds, theLatitude
Icon , LongitudeIcon and AltitudeIcon Willstart blinking foras long as15 seconds.
During this process,turn with theunit at anangle of 360degrees, then pressand release "SET"
button and turnin the oppositerotation for another360 degrees, thenpress SET button once to
finish..
Such calibration is a must when using the unit for the first time. It is necessary to calibrate the
compass after traveling a long distance or being surrounded by a different environment. It's also
recommended under circumstanceswhen unexpected factorscause compass failure.
Distance
The Polaris offers three typesof distance:
___ Straight distance between starting point Home 0 to destination. As soon as Starting
Navigation (refer to Basic Navigation), distance betweenthe two waypoints will be calculated
and displayed inthe data fieldjust below theicon.
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POLARIS USER MANUAL

The First Use of Polaris
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N-1 Pointer bearing N+1
Home 0
N Destination
Case 3: Forward-Tracking
Note 4: In the tracking forward state, system will stop Marking function. When userarrives at
Home N, Arriving Icon will blink and arriving alert will start. At this time, all other button will
be disabled, untilpressing 'OK' button to stopit. Once the'OK' is pressed, Home N will increase
to Home(N+1) and the latitude, longitude and altitude windows display the geographic position
of (N+1) ascurrent point, andthe pointer willpoint to (N+2).
Case 4__ Renewed Navigation:. In previous three cases, whenever a new destination is set,
Navigation Pointer will be forced to target the new destination, allowing user to go under the
guidance of thenew bearing.
N-1 N+1
Home 0
N Destination
Pointer bearing
New Destination
Case 4: RenewedNavigation
Digital Compass:
User should calibrate the digital compass before it start to work for the first time to use the
unit. After calibration,the digital compasskeeps working, bearingthe direction of the North. As
you turn around slowly with the Polaris in hand, you will see the Bearing Arrow of Compass
and the Symbol N moving together, showing the directionof the True North as shown infigure
9.
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POLARIS USER MANUAL
2. The battery icon pop up with its three rating signs cycling, signifying a charging
process underway. If the battery icon failsto appear, you should examine battery select
switch which locateson the leftside of the inner body to make sure thatthe switch stay
on the upperside.
3. When batteries are charged to full, a period of about 5 hours, icon will start
blinking. User shouldremove the charging terminal fromthe charging port. If userfails
to remove thecharging terminal from the charging port, theunit will automatically
reduce charging current to a very low value so that no damages will be caused to the
battery.
POLARIS USER MANUAL
ToCharge batteries:
1. Pull theplastic cover fromthe charging port, insert adaptor's mini-USB terminal, then
connect the adaptor'sanother terminal toAC power mainsocket
1. Take the unit outside in an open area where there is no obstruction from a clear view of sky, press
POWER button to turn on the unit. You will see all the icons pop up on the screen for three seconds. After
the shown-all, then all data field will enter into zero state and the local time clock is running on.
2. With the GPS signal icon blinking, the unit is tracking the GPS signal to obtain the first
position fix, a process which will take a bout 2 to 3 minutes before the icon to stabilize.
3. As soon as the first position fix is been made, which is hinted by stable icon , the data field ,
and display respectively the latitude, longitude and altitude of your present standing. Several icons
appear, denoting the total number of satellite being tracked; GMT clock is wakened from the zero state
and synchronized with the time of satellite system.
4. To give a real meaning to local time clock, you should calibrate it with the GMT clock: press UP or
DOWN button to highlight icon , then press SET button for three seconds. After this, local time clock
reflects the hour in user's local area, with its minute and second synchronized with GMT.
5. To activate the digital compass and give you proper explanation of the north, you should calibrate the
compass: Hold the unit on horizontal level, press 'SET' button for three seconds, the Latitude Icon ,
Longitude Icon and Altitude Icon will start blinking for as long as 15 seconds. During this process,
turn with the unit at an angle of 360 degrees, then press and release 'SET' button and turn in the opposite
rotation for another 360 degrees, then press 'SET' button once to finish. Icon become active, with its
arrow kept pointing to the North.
At this moment, you have done all the preparation work. As you walk with the device holding
horizontally in hand and see latitude and longitude changing, speed data field showing the speed of your
movement.
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In-Depth Use of Polaris
So far,however, the unit fails to record the distance your walk covered, and can't mark
down waypoints during this walk. In order to enable it to do the jobs, you should first
establish a track, which requires two points: the starting point or Home 0, and a
destination.
Tomark your current position as Home 0:
Press UP orDOWN button onceto highlight the home point icon , then press
and hold 'SET' button for 3 seconds, the latitude, longitude and altitude of your current
position will be stored.
A destination may be specifically picked out from a map or randomly caught in mind.
If you have no specific destination, you are suggested to input a destination with one
minute difference in latitude and longitude from the starting point, say:
(Starting Point) (Destination)
Toestablish a track without specific destination:
Press UP three times to highlight the Destination Icon , then press the SET
button once to highlight latitude icon , then press OK button to enterdata field. With
starting latitude remaining on display and figure N or W blinking, press OK four times
to highlight the forth digit (the single minute), press UP button to increase the value by
one minute. Press OK button four times to highlight longitude icon , likewise up
change the longitudeby one minute.
Toestablish a track with specific destination:
Press UP three times to highlight the Destination Icon , then press the SET
button once to highlight latitude icon , then press OK button to enter data field. Using
UP or DOWNbutton to change the value you want and confirm by pressing OK button.
Finish the entireinput likewise digitby digit.
After a destination has been input, the navigation pointer is activated with its arrow
pointing to it, signifying that user following this direction will arrive at the destination
ultimately. The straight distancebetween Home 0and the destination also
appears in thedistance data field .
Now you can use the device to mark down waypoints if you talk a walk from the Home 0,
and the unit will measure distance the walk cover symbolized with icon or
.
Tomark your current standing locationas a waypoint
Press UP button twice to highlight the Current Point icon ,then press and
release SET button.
Such operation will causes the home point icon to increase by one .
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Case 2__ Backtracking : In case 1, when user arrive at a certain waypoint Home N, as shown in
the following diagram, circumstance require him to go back to waypoint Home (N-1). Wanting
unit to guideback to thatpoint, he shouldact in thisway:
Op6--- press and hold'DOWN' and 'SET'button for twoseconds
Such dual keying will make the Navigation Pointer point to Home (N-1) from current
location (Point N). Icon will disappear while icon centered on the display will appear, as
shown in theright picture ofFigure 8.
Case 2: Backtracking
Note: In thistrailing back state,system will stopmarking waypoint. Whenuser arrives at
Home (n-1), arriving iconwill blink and arriving alarm will be generated. At this time, all other
button will bedisabled, until pressing'OK'button to stopit. Once the'OK' is pressed,Home (N-1)
will decrease toHome (N-2) and the latitude,longitude and altitude windows display the
geographic position ofHome (N-1) ascurrent point, andthe pointer willpoint to Home(N-2). So
occurs the samestep until, whenarriving at Home0 or incase 3 whenforward-tracking has been
triggered.
Case 3___Forward-Tracking: in case 2, when user arrived at waypoint Home (N-1),
Circumstance require the user go back to Home N again. In order to use the unit to guide him back
to Home N,he should actin this way:
Op7 --- press and hold 'UP' and 'SET' button for two seconds. Such dual keying will force the
Navigation Pointer point to Home N from current location Home (N-1).Icon will
disappear while icon Centered on the display will appear, as shown in the left picture of
Figure 8.
Home 0
N-1 Pointer bearing N+1
NDestination
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‡F
‡I

Tosee the distance you walked from the starting point to current position
Use UP button four times to highlight icon , press SET button once, distance
icon will changeto with thedata below itshowing the straight line distance;
press SET buttontwice, distance icon will change to, with databelow it
showing distance ofzigzag course.
Three Waypoints and their Operations
When using Polaris to mark down certain location, we call this location as a waypoint,
geographic position ofwhich is savedand reviewable forfuture reference.
Polaris features three waypoints on top of its LCD as illustrated by Figure 5: Home Point,
Current Point and Destination. Just immediate below the three waypoint icons are the Latitude,
Longitude and Altitude data field which always display the geographic position of user's current
location, except whenreviewing the waypointssaved before.
In order tomark and savecurrent location asa waypoint, firstuser must use the Home Point icon to
mark down current location as Home 0 or starting point, then enters a proposed destination
through Destination icon,thereafter using Currentpoint icon to mark every location in passing and
save as HomeN.
Figure 5: ThreePoints Date Field
Familiar with
Home Point (Home 0 toHome 999 ):
Total 2000 waypoints can be marked here. Is starting pointor Home 0. To
th st th
is waypoint ofthe second to1000 ; while to is the 1001 to 2000 waypoint you
marked down before.
OP1---Mark Home 0: Highlight the"Home point icon" (refer to S1in Figure4) andthen
press and hold"SET" button for 3seconds, the latitude,longitude and altitudeof your current
position will bestored and displayed.
NOTE : MarkingHome 0 confirms that anew start will be made and all the data saved before
will be deletedcompletely. So occurs the following procedure:
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Figure 8: Navigation Pointer function
Navigation Operation
In light ofthe two functionof the Navigation Pointer, four specific casesare discussed here:
Case 1___Basic Navigation: After marking Home 0 (OP1) and entering a destination (OP5), a
process called Starting Navigation, Navigation Pointer will be triggered and keep pointing in
the direction leading to the destination. Icon centered on the screen will appear too, as showed
in left pictureof figure 8.
Current Point
Pointer bearing Destination
Case 1: BasicNavigation
Note: in this exploration state, system will automatically or manually mark down the
geographic position you passed, with Home (N) counting the waypoints. When user arrives at
Destination, the Arriving Icon will blink and Arriving alarm will be generated, until press 'OK'
button to stopit.
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Current Point:
T UP' or 'DOWN' button to highlightthe
Current Point icon (refer to S2in figure4), press and release 'SET' button. Such operation
will function onlyafter destination hasbeen entered, a state defined as navigation, and causes the
Home N to count by one Home N+1 , say:
There are threeways of markinga waypoint:
_Auto-marking: the unitwill automatically markuser's current locationas waypoint according
to set markinginterval, minimum ofone minute;
_Manual-marking: the operationOP2 is themanual-marking;
_Combined-marking: such settingwill enable boththe Auto-marking andManual-marking to
function simultaneously.
Op3---to set theway of markinglocation, use 'UP' or 'DOWN' button to highlightthe Current
Point icon (refer toS2 in figure1),press and holds'SET' button for 3seconds, then youwill
enter into thesetting mode ofmarking current location.The following figureshows the relevant
procedure.
OP2--- o mark your current location as a waypoint,use '
OP4---To review a certain waypoint marked down and saved before: Highlight Home Point
icon (refer to S1 in Figure4), press and release 'SET' button, then the three digit number
will be blinking, using 'UP' and 'DOWN' button to select the waypoint number you want and the
latitude,longitude,altitude and GMTdata field correspondto the waypoint simultaneously. When
using 'OK' buttonto leave, thelat/long/alt data fieldshow the currentlocation again.
Destined Point: The latitude,longitude and altitude of proposed destination is to be input here.
OP5---T sing'UP' or 'DOWN' button to highlightthe Destination Icon
(refer to S3 in figure 4), press the 'SET' button once to go to the latitude icon ,then press
'OK' button to inputdata. Remember thatevery input mustbe confirmed bypressing 'OK' button.
After the input of latitude and longitude is completed, the Navigation Pointer centered in the
LCD screen willpoint to the proposed destination at the direction you should be heading. And also
the distance betweenstarting point anddestination will bedisplayed in theDistance data field.
GPS Navigation Pointerand Digital Compass
When a proposedDestination is input, ThePolaris can guide youto that point. Also it can guide
you back toyour starting point.To navigate to a destination simply follow the Navigation Pointer.
The Navigation Pointer will always point directly to the Destination, no matter what your
current location mightbe.
Figure 6: Setting Marking Mode
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Working theory about Navigation Pointer:
Figure 7: Navigation Pointer Description
When using the Navigation function, the Polaris required you to hold it rightly before you,
with the Vertical Line in alignment with the direction you face or head. Otherwise it may guide
you to a wrong destination. On the top of the above diagram there is the Vertical Line which
symbolizes the direction you are heading. If a Destination is just input, the Navigation Pointer
will keep pointing to it. Only if you are heading rightly toward the destination, the Navigation
Pointer will point straight up and the arrow will align with the Vertical Line. If only you deviate
from the direction to your destination, a Deviation Angle will occur and be shown in the center of
the ring. Aspecific circumstance isdepicted by theleft picture ofthe
following diagram in which the Destination is targeted. The right picture illustrates another
circumstance in which Home (n-1) (previous waypoint) is targeted and user is going back.
Centered in thering is theDeviation Angle.
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