Casio 3439 User Manual

MO1503-EA

Operation Guide 3439

ENGLISH

Congratulations upon your selection of this CASIO watch.

Applications

The built-in sensors of this watch measure direction, barometric pressure, temperature and altitude. Measured values are then shown on the display. Such features make this watch useful when hiking, mountain climbing, or when engaging in other such outdoor activities.

• The measurement functions built into this watch are not intended for taking measurements that

require professional or industrial precision. Values produced by this watch should be considered as reasonable representations only.

•

When engaging in mountain climbing or other activities in which losing your way can create a dangerous or life-threatening situation, always use a second compass to conﬁ rm direction readings.

• Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss

suffered by you or any third party arising through the use of this product or its malfunction.

Warning !

E-1

Important!

• The watch’s Altimeter Mode calculates and displays relative altitude based on barometric pressure

readings produced by its pressure sensor. This means that readings taken at different times at the same location may produce different altitude values due to changes in barometric pressure. Also note that the value displayed by the watch may be different from the actual elevation and/or sea level elevation indicated for the area where you are located.

• When using the altimeter of this watch for mountain climbing or other activities, it is highly

recommended that you check a map, local altitude indications, or some other source for your current correct altitude and regularly calibrate the altimeter with the latest information. For more information, see “To specify a reference altitude value” (page E-47).

• Whenever you use the digital compass of this watch for serious trekking, mountain climbing, or other

activities, be sure always to take along another compass to conﬁ rm readings. If the readings produced by the digital compass of this watch are different from those of the other compass, perform bidirectional calibration of the digital compass to ensure more accurate readings.

• Direction readings and digital compass calibration will not be possible if the watch is in the vicinity of a

permanent magnet (magnetic accessory, etc.), metal objects, high-voltage wires, aerial wires, or electrical household appliances (TV, computer, cellphone, etc.)

E-2

Things to check before using the watch

1. Check the Home City and the daylight saving time (DST) setting.

Use the procedure under “To conﬁ gure Home City and summer time settings” (page E-14) to conﬁ gure your Home City and daylight saving time settings.

Important!

• World Time Mode and Sunrise/Sunset Mode data depend on correct Home City, time, and date settings

in the Timekeeping Mode. Make sure you conﬁ gure these settings correctly.

2. Set the current time.

See “Conﬁ guring Current Time and Date Settings” (page E-16).

The watch is now ready for use.

E-4

About This Manual

• Depending on the model of your watch, digital display text appears

either as dark ﬁ gures on a light background, or light ﬁ gures on a dark background. All examples in this manual are shown using dark ﬁ gures on a light background.

• Button operations are indicated using the letters shown in the

illustration.

• Note that the product illustrations in this manual are intended for

reference only, and so the actual product may appear somewhat different than depicted by an illustration.

Contents

About This Manual …………………………………………………………………………………………… E-3

Things to check before using the watch ………………………………………………………………… E-4

Mode Reference Guide ……………………………………………………………………………………… E-9

Timekeeping ………………………………………………………………………………………………… E-13

Conﬁ guring Home City Settings ………………………………………………………………………… E-14

To conﬁ gure Home City and summer time settings ……………………………………………… E-14

Conﬁ guring Current Time and Date Settings ………………………………………………………… E-16

To change the current time and date settings …………………………………………………… E-16

Taking Direction Readings ……………………………………………………………………………… E-19

To take a direction reading ………………………………………………………………………… E-19 To perform bidirectional calibration ………………………………………………………………… E-23 To perform magnetic declination correction ……………………………………………………… E-24 To store a direction angle reading in Bearing Memory ………………………………………… E-25

Specifying Temperature, Barometric Pressure, and Altitude Display Units …………………… E-29

To specify temperature, barometric pressure, and altitude display units ……………………… E-29

Taking Barometric Pressure and Temperature Readings ………………………………………… E-31

To take barometric pressure and temperature readings ………………………………………… E-31 To enable or disable the barometric pressure change alert …………………………………… E-37 To calibrate the pressure sensor and the temperature sensor ………………………………… E-38

E-3

E-5

Using the Altimeter Mode ………………………………………………………………………………… E-40

To select the altitude screen format ……………………………………………………………… E-42 To select the altitude auto reading interval ……………………………………………………… E-43 To take altitude readings …………………………………………………………………………… E-45 To specify a reference altitude value ……………………………………………………………… E-47 To specify the altitude differential start point ……………………………………………………… E-48 To use the altitude differential value ……………………………………………………………… E-49 To save a reading manually ………………………………………………………………………… E-50 To start trek log value updating …………………………………………………………………… E-53 To stop trek log value updating …………………………………………………………………… E-53

Viewing Altitude Records ………………………………………………………………………………… E-58

To view altitude records …………………………………………………………………………… E-58 To delete all manually saved data ………………………………………………………………… E-62 To delete data in a speciﬁ c memory area ………………………………………………………… E-62

Looking up Sunrise and Sunset Times ………………………………………………………………… E-64

To enter the Sunrise/Sunset Mode ………………………………………………………………… E-64 To view the sunrise/sunset time for a particular date …………………………………………… E-65 To look up the sunrise and sunset times for a speciﬁ c location ………………………………… E-66

Using the Stopwatch ……………………………………………………………………………………… E-68

To enter the Stopwatch Mode ……………………………………………………………………… E-68 To perform an elapsed time operation …………………………………………………………… E-68 To pause at a split time ……………………………………………………………………………… E-68 To measure two ﬁ nishes …………………………………………………………………………… E-69

E-6

Using the Countdown Timer ……………………………………………………………………………… E-70

To enter the Countdown Timer Mode ……………………………………………………………… E-70 To specify the countdown start time ……………………………………………………………… E-70 To perform a countdown timer operation ………………………………………………………… E-71 To stop the alarm …………………………………………………………………………………… E-71

Using the Alarm …………………………………………………………………………………………… E-72

To enter the Alarm Mode …………………………………………………………………………… E-72 To set an alarm time ………………………………………………………………………………… E-73 To turn an alarm and the Hourly Time Signal on and off………………………………………… E-74 To stop the alarm …………………………………………………………………………………… E-75

Checking the Current Time in a Different Time Zone ………………………………………………… E-76

To enter the World Time Mode …………………………………………………………………… E-76 To view the time in another time zone …………………………………………………………… E-76 To specify standard time or daylight saving time (DST) for a city ……………………………… E-77

Illumination ………………………………………………………………………………………………… E-78

To turn on illumination manually …………………………………………………………………… E-78 To change the illumination duration ……………………………………………………………… E-78 To turn the auto light switch on and off …………………………………………………………… E-80

Button Operation Tone …………………………………………………………………………………… E-82

To turn the button operation tone on and off ……………………………………………………… E-82

E-7

Operation Guide 3439

Low Battery Indication …………………………………………………………………………………… E-83

Troubleshooting …………………………………………………………………………………………… E-84

Speciﬁ cations ……………………………………………………………………………………………… E-89

E-8

Selecting a Mode

• The illustration below shows which buttons you need to press to navigate between modes.

• To return to the Timekeeping Mode from any other mode, hold down D for about two seconds.

Timekeeping Mode

Stopwatch Mode

Data Recall

Mode

Sunrise/Sunset

Mode

Mode Reference Guide

Your watch has 10 “modes”. The mode you should select depends on what you want to do.

To do this: Enter this mode: See:

• View the current date in the Home City

• Conﬁ gure Home City and daylight saving time (DST) settings

• Conﬁ gure time and date settings

Determine your current bearing or the direction from your current location to a destination

• View the barometric pressure and temperature at your current location

• View a graph of barometric pressure readings

• View the altitude at your current location

• Determine the altitude differential between two locations (reference

point and current location)

• Record an altitude reading with the reading time and date

View the sunrise and sunset times for a speciﬁ c date Sunrise/Sunset Mode E-64

Recall records created in the Altimeter Mode Data Recall Mode E-58

Use the stopwatch to measure elapsed time Stopwatch Mode E-68

Use the countdown timer Countdown Timer Mode E-70

Set an alarm time Alarm Mode E-72

View the current time in one of 48 cities (31 time zones) around the globe World Time Mode E-76

• You can use buttons A,B, and C to enter a sensor mode directly from the Timekeeping Mode or

from another sensor mode. To enter a sensor mode from the Sunrise/Sunset, Data Recall, Alarm, Stopwatch, Countdown Timer or World Time, ﬁ rst enter the Timekeeping Mode and then press the applicable button.

Sensor Modes

Barometer/

Digital Compass Mode

Barometer/

Thermometer Mode

Timekeeping Mode E-13

Digital Compass Mode E-19

Barometer/Thermometer Mode

Altimeter Mode E-40

Altimeter Mode

E-31

E-9

World Time

Countdown

Countdown Timer Mode

Timer Mode

E-10

General Functions (All Modes)

The functions and operations described in this section can be used in all of the modes.

Direct Timekeeping Mode Access

• To enter the Timekeeping Mode from any other mode, hold down D for about two seconds.

Auto Return Features

• The watch will automatically return to the Timekeeping Mode if you do not perform any button operation

for a particular amount of time in each mode.

Mode Name Approximate Elapsed Time

Sunrise/Sunset, Data Recall, Alarm, Digital Compass 3 minutes

Altimeter 1 hour minimum

Barometer/Thermometer 1 hour

Setting screen (digital setting ﬂ ashing) 3 minutes

• If you leave a screen with ﬂ ashing digits on the display for two or three minutes without performing any

operation, the watch exits the setting screen automatically.

Initial Screens

When you enter the Data Recall, Alarm, World Time, or Digital Compass Mode, the data you were viewing when you last exited the mode appears ﬁ rst.

Scrolling

TheA and C buttons are used on the setting screen to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed.

E-12

Alarm Mode

World Time

Mode

12 hours maximum

Conﬁ guring Home City Settings

There are two Home City settings: actually selecting the Home City and selecting either standard time or daylight saving time (DST).

To conﬁ gure Home City and summer time settings

City code

PM indicator

indicator

Hour :

Hour : Minutes

Minutes

DST indicator

1. In the Timekeeping Mode, hold down E for at least two seconds.

SET Hold

First, the upper display. After that, the currently selected city code and city name will scroll across the upper display. Keep E depressed until the scrolling starts.

• The watch will exi t the setting m ode automatic ally if you do not

perform a ny operation fo r about two o r three minutes.

• For detail s about city c odes, see the “ City Code Table” at t he back

of this manual.

2. Use A (East) and C (West) to scroll through the available city codes.

• Keep scrolling u ntil the city c ode you want to sele ct as your Home

City is displayed.

will ﬂ ash on the display, and

CITY

will be displayed in

3. Press D to display the DST setting screen.

PressA to toggle the DST setting between Daylight Saving Time (ON) and standard time (

• Note that you c annot switch be tween stan dard time and dayl ight

saving time (D ST) while U TC is selected a s your Home Cit y.

OFF

Timekeeping

Use the Timekeeping Mode (

• Each press of E in the Timekeeping Mode will change screen contents as shown below.

Day of the Week/Date Screen Month/Day Screen Barometric Pressure

Day of week

Hour :

Minutes

indicator

5. After all of the settings are the way you want, press E twice to exit the setting screen.

• Daylight Savi ng Time is turn ed on when the DST indi cator is on the di splay.

Note

• After you sp ecify a cit y code, the watch will u se UTC* off sets in the World T ime Mode to cal culate

the current ti me for other tim e zones based o n the current tim e in your Home Ci ty.

* Coordinated Universal Time, the world-wide scientiﬁ c standard of timekeeping.

The reference point for UTC is Greenwich, England.

TIME

) to set and view the current time and date.

Day

Seconds

Month Day

Graph Screen

Barometric pressure graph

E-11

E-13

E-14

Seconds

E-15

Operation Guide 3439

Conﬁ guring Current Time and Date Settings

You can use the procedure below to adjust the Timekeeping Mode time and date settings if they are off.

To change the current time and date settings

City code

PM indicator

indicator

Hour :

Hour : Minutes

Minutes

E-16

Note

• For inform ation about s electing a Ho me City and c onﬁ guring the D ST setting , see “Conﬁ gu ring

Home Cit y Setting s” (page E-14).

• While the 12- hour format i s selected for ti mekeeping, a P (P M) indicator will a ppear for time s from

noon to 11:59 p.m. No indi cator appear s for times from m idnight to 11:59 a.m. With 24 -hour format, time is displaye d from 0:00 to 2 3:59, witho ut any P (PM) indicator.

• The watch’s built- in full automat ic calendar ma kes allowances fo r different mo nth lengths an d leap

years. Once y ou set the date, the re should be no reas on to change it exce pt after you have the watch’s battery re placed.

• The day of the we ek changes auto matically as t he date and/or ye ar changes. Ma ke sure that your

date and year settings are correct.

• Refer to the page s shown below f or more inform ation on Tim ekeeping Mod e settings.

- Button operation tone on/off: “To turn the button operation tone on and off” (page E-82)

- Illumination duration setting: “To change the illumination duration” (page E-78)

- Changing the temperature, barometric pressure, and altitude display units (for a city code other

TYO

than

): “To specify temperature, barometric pressure, and altitude display units” (page E-29)

1. In the Timekeeping Mode, hold down E for at least two seconds.

SET Hold

First, the upper display. After that, the currently selected city code and city name will scroll across the upper display. Keep E depressed until the scrolling starts.

will ﬂ ash on the display, and

CITY

will be displayed in

2. Press D to move the ﬂ ashing in the sequence shown below to select the other settings.

City Code DST

Thermometer/Barometer/ Altitude display unit

• The follow ing steps explai n how to conﬁ gure ti mekeeping se ttings onl y.

3. When the timekeeping setting you want to change is ﬂ ashing, use A and/or C to change it as described below.

Screen To do this: Do this:

4. After all of the settings are the way you want, press E twice to exit the setting screen.

12/24-Hour Format

Illumination Duration

Change the city code Use A (East) and C (West).

Toggle between Daylight Saving Time (ON) and Standard Time (

Toggle between 12-hour ( timekeeping.

Reset the seconds to (If the current seconds count is between 30 and 59, one is added to the minute count).

Change the hour or minutes

Change the year, month, or day

Seconds Hour Minutes Year

Button Operation Tone

OFF

12H

) and 24-hour (

24H

)

PressA.

UseA (+) and C (–).

Day Month

E-17

Taking Direction Readings

You can use the Digital Compass Mode to determine the direction of north, and to check your bearing to a destination.

• For information about what you can do to improve digital compass reading accuracy, see “Calibrating

the Bearing Sensor” (page E-22) and “Digital Compass Precautions” (page E-27).

To take a direction reading

1. Make sure the watch is in the Timekeeping Mode or any one of the sensor modes.

• The senso r modes are: Digit al Compass M ode, Baromete r/Therm ometer Mode, a nd Altimeter

Mode.

2. Place the watch on a ﬂ at surface. If you are wearing the watch, make sure that your wrist is horizontal (in relation to the horizon).

3. Point the 12 o’clock position of the watch in the direction whose reading you want to take.

4. Press C to start.

• COMP will appear in th e upper display to ind icate that a digita l compass ope ration is in prog ress.

• About one s econd afte r you press C, pointers (thre e graphic segme nts for nort h, one graphic

segment ea ch for south, ea st, and west) will ap pear on the disp lay to indicate nor th, south, e ast, and west. Dire ction will als o be indicated by litera l direction indi cators and by a direct ion angle.

E-18

Objective Bearing Indication

Bearing to objective: Northwest

N: North E: East W: West S: South

Note

• If the four po inters (north, s outh, east, we st) and the directi on indicating l etters do not a ppear

on the display w hen you press C, it could mea n that the watch is disp laying bearing m emory informati on. If this happ ens, press E to delete the cur rent bearing me mory conte nts. For more informati on, see “Usi ng Bearing Me mory” (pa ge E-25).

• To return to the Time keeping Mod e, press D.

Pressing D will return to th e Timekeepi ng Mode even is a readi ng operation i s in progress.

E-20

Calibrating the Bearing Sensor

You should calibrate the bearing sensor whenever you feel that the direction readings being produced by the watch are off. You can use any one of two different bearing sensor calibration methods: bidirectional calibration or magnetic declination correction.

Bidirectional Calibration

•

Bidirectional calibration calibrates the bearing sensor in relation to magnetic north. Use bidirectional calibration when you want to take readings within an area exposed to magnetic force. This type of calibration should be used if the watch becomes magnetized for any reason.

Important!

• To ensure correct direction readings by this watch, be sure to perform bidirectional calibration before

using it. The watch may produce incorrect direction readings if you do not perform bidirectional calibration.

Magnetic Declination Correction

•

With magnetic declination correction, you input a magnetic declination angle (difference between magnetic north and true north), which allows the watch to indicate true north. You can perform this procedure when the magnetic declination angle is indicated on the map you are using. Note that you can input the declination angle in whole degree units only, so you may need to round off the value speciﬁ ed on the map. If your map indicates the declination angle as 7.4°, you should input 7°. In the case of 7.6° input 8°, for 7.5° you can input 7° or 8°.

Precautions about bidirectional calibration

• You can use any two opposing directions for bidirectional calibration. You must, however, make sure

that they are 180 degrees opposite each other. Remember that if you perform the procedure incorrectly, you will get wrong bearing sensor readings.

• Do not move the watch while calibration of either direction is in progress.

E-22

North

Bearing angle to objective

Meaning

315°

0°

E-19

Important!

• If the digital display contents start to ﬂ ash after you perform a reading operation, it means that abnormal

magnetism has been detected. Move away from any potential source of strong magnetism and try taking a reading again. If the problem occurs when you try again, continue to keep away from the source of strong magnetism, perform bidirectional calibration, and then try taking a reading again. For more information, refer to “To perform bidirectional calibration” (page E-23) and “Location” (page E-27).

Digital Compass Readings

• When you press Cto start digital compass reading operation,

display to indicate that a digital compass operation is in progress.

• After the ﬁ rst reading is obtained, the watch will continue to take digital compass readings automatically

each second for up to 60 seconds. After that, the reading operation will stop automatically.

• The direction indicator and angle value will show

complete.

• The auto light switch is disabled during the 60 seconds that digital compass readings are being taken.

• The margin of error for the angle value and the direction indicator is ±11 degrees while the watch is

horizontal (in relation to the horizon). If the indicated direction is northwest (NW) and 315 degrees, for example, the actual direction can be anywhere from 304 to 326 degrees.

• Note that taking a direction reading while the watch is not horizontal (in relation to the horizon) can

result in large direction reading error.

•

You can calibrate the bearing sensor if you suspect the direction reading is incorrect.

• Any ongoing direction reading operation is paused temporarily while the watch is performing an alert

operation (daily alarm, Hourly Time Signal, countdown timer alarm) or while illumination is turned on (by pressingL). The direction reading operation resumes for its remaining duration after the operation that caused it to pause is ﬁ nished.

• See “Digital Compass Precautions” (page E-27) for important information about taking direction readings.

• You should perform bidirectional calibration in an environment that is the same as that where you plan

to be taking direction readings. If you plan to take direction readings in an open ﬁ eld, for example, calibrate in an open ﬁ eld.

To perform bidirectional calibration

1. In the Digital Compass Mode, hold down E for at least two seconds. First, scroll across the upper display. Keep E depressed until

CALIBRATION

• At this time, t he north poi nter ﬂ ashes at the 12 o’cloc k position

and the displ ay will show -1- to in dicate that the watch is re ady to calibrate the ﬁ rst direction.

2. Place the watch on a level surface facing any direction you want, and pressC to calibrate the ﬁ rst direction.

• - - - is shown on t he display while ca libration is be ing perform ed.

When calib ration is succe ssful, Tu rn 1 80 ° will appe ar on the display and th ree graphic segm ents ( After abo ut one second , CALIBRATION - 2- will scroll acros s the upper display.

• If ERR-1 appears on the display, press C again to restar t the

direction re ading operatio n.

- - -

SET Hold

will ﬂ ash on the display. After that,

starts scrolling.

COMP

will initially appear on the

to indicate that digital compass readings are

CALIBRATION

) will ﬂ ash at 6 o’clock .

E-21

will

3. Rotate the watch 180 degrees.

4. Press C again to calibrate the second direction.

• - - - is shown on t he display while ca libration is be ing perform ed.

When calib ration is succe ssful, the dis play will show OK and th en change to the D igital Com pass Mode scre en.

E-23

Operation Guide 3439

To perform magnetic declination correction

Magnetic declination angle

Magnetic declination angle direction value (E, W, or OFF)

direction value (E, W, or OFF)

Magnetic declination

Magnetic declination angle value

angle value

E-24

• You can press C at any time whil e the Bearing M emory sc reen is displayed, to s tart a new

60- second dire ction reading op eration. Do ing so will display t he direction a ngle for the direc tion that the 12 o’clock po sition of the watch i s pointed. The di rection angle o f the current readin g will disappear f rom the display af ter the 60 -second direction rea ding operatio n is complete.

• During the ﬁ rst 60 seco nds after you di splay the Beari ng Memor y screen or durin g a 60- second

direction re ading operatio n you triggered by p ressing C while the Be aring Memo ry screen is o n the display, the direc tion stored in me mory is indi cated by a Bearing M emory po inter.

• Pressing E while the Be aring Memo ry screen is dis played will clear t he reading current ly in

Bearing M emory and s tart a new 6 0-sec ond direction re ading operati on.

Setting a map and ﬁ nding your current location

Having an idea of your current location is important when mountain climbing or hiking. To do this, you need to “set the map”, which means to align the map so the directions indicated on it are aligned with the actual directions of your location. Basically what you are doing is aligning north on the map with north as indicated by the watch.

• Note that map reading skills and experience are required to determine your current location and

destination on a map.

1. In the Digital Compass Mode, hold down E for at least two seconds.

SET Hold

First, scroll across the upper display. Keep E depressed until

CALIBRATION

2. Press D.

• DEC 0° will appear on the di splay and then th e current magnet ic

declinatio n angle sett ing will ﬂ ash on the d isplay.

3. Use A (East) and C (West) to change the settings.

•

The follow ing explains mag netic declina tion angle dire ction settings.

OFF

E W

• You can select a valu e within the rang e of W 90° to E 9 0° with

these set tings.

• You can turn off (OFF) m agnetic declin ation correc tion by pressin g

• The illustra tion, for examp le, shows the valu e you should inp ut

and the direct ion settin g you should sel ect when the ma p shows a magnetic de clination of 1° West .

4. When the setting is the way you want, press E to exit the setting screen.

will ﬂ ash on the display. After that,

starts scrolling.

: No magnetic declination correction performed. The magnetic

declination angle with this setting is 0°.

: When magnetic north is to the east (east declination)

: When magnetic north is to the west (west declination)

and C at the same ti me.

CALIBRATION

will

Using Bearing Memory

Bearing

Bearing memory

memory direction

direction angle value

angle value

Direction

Direction angle of

angle of current

current reading

reading

2. During the 60 seconds that digital compass readings are being taken, press

Digital Compass Precautions Magnetic North and True North

Location

• Taking a direction reading when you are near a source of strong magnetism can cause large errors in

• Accurate readings are also impossible indoors, especially inside ferroconcrete structures. This is

• Accurate direction readings are impossible while in a train, boat, air plane, etc.

12 o’clock position

North pointer

Pointer to bearing

Pointer to bearing in bearing memory

in bearing memory

Bearing Memory

Screen

reading in Bearing Memory.

• The Beari ng Memor y direction ang le ﬂ ashes for abo ut one secon d as it is stored in Be aring

Memor y. After that, the B earing Mem ory screen (wh ich shows the be aring memor y direction angle and pointer) wil l appear, and a new 60 -second direction re ading operati on will start .

True north

Magnetic north

Earth

readings. Because of this, you should avoid taking direction readings while in the vicinity of the following types of objects: permanent magnets (magnetic necklaces, etc.), concentrations of metal (metal doors, lockers, etc.), high tension wires, aerial wires, household appliances (TVs, personal computers, washing machines, freezers, etc.)

because the metal framework of such structures picks up magnetism from appliances, etc.

Bearing Memory lets you temporarily store and display a direction reading so you can use it as a reference as you take subsequent digital compass readings. The Bearing Memory screen displays the direction angle for the stored reading, along with a pointer that indicates the stored reading. When you take digital compass readings while the Bearing Memory screen is displayed, the direction angle of the current digital compass reading (as read from the 12 o’clock position of the watch) and the stored Bearing Memory direction reading will both be shown.

To store a direction angle reading in Bearing Memory

1. Press C to start a digital compass reading operation (page E-19).

• This will ta ke an initial readi ng and then take rea dings every

second for 6 0 seconds.

• If a bearing me mory direc tion angle valu e is already displaye d, it

means that t here is a reading alre ady stored in Bea ring Memor y. If this happens, press E to clear the Be aring Memo ry reading and exit the bearing memory screen before performing the above step.

to store the current

The northerly direction can be expressed either as magnetic north or true north, which are different from each other. Also, it is important to keep in mind that magnetic north moves over time.

• Magnetic north is the north that is indicated by the needle of a compass.

• True north, which is the location of the North Pole of the Earth’s axis, is the

north that is normally indicated on maps.

• The difference between magnetic north and true north is called the

“declination”. The closer you get to the North Pole, the greater the declination angle.

E-25

E-26

Storage

• The precision of the bearing sensor may deteriorate if the watch becomes magnetized. Because of

this, you should store the watch away from magnets or any other sources of strong magnetism, including: permanent magnets (magnetic necklaces, etc.), concentrations of metal (metal doors, lockers, etc.), and household appliances (TVs, personal computers, washing machines, freezers, etc.)

• Whenever you suspect that the watch may have become magnetized, perform the procedure under “To

perform bidirectional calibration” (page E-23).

E-28

3. Perform the operations below to specify the display units you want.

To specify this unit: Press this key: To toggle between these settings:

Altitude

Barometric Pressure

Temperature

(meters) and ft (feet)

hPa

(hectopascals) and

°C

(Celsius) and °F (Fahrenheit)

inHg

(inches of mercury)

4. After all of the settings are the way you want, press E twice to exit the setting screen.

E-27

Specifying Temperature, Barometric Pressure, and Altitude Display Units

Use the procedure below to specify the temperature, barometric pressure, and altitude display units to be used in the Barometer/Thermometer Mode and the Altimeter Mode.

Important!

TYO

• When

To specify temperature, barometric pressure, and altitude display units

(Tokyo) is selected as the Home City, the altitude unit is set automatically to meters (m), the barometric pressure unit to hectopascals ( settings cannot be changed.

hPa

), and the temperature unit to Celsius (°C). These

1. In the Timekeeping Mode, hold down E for at least two seconds.

SET Hold

First, the upper display. After that, the currently selected city code and city name will scroll across the upper display. Keep E depressed until the scrolling starts.

2. Press D as many times as necessary until display.

• See the seq uence in step 2 of th e procedure und er “To change the

current time a nd date settin gs” (page E-16) for informati on about how to scroll thro ugh setting sc reens.

will ﬂ ash on the display, and

CITY

UNIT

will be displayed in

appears on the

E-29

Taking Barometric Pressure and Temperature Readings

This watch uses a pressure sensor to measure air pressure (barometric pressure) and a temperature sensor to measure temperature.

To take barometric pressure and temperature readings

Barometric

Barometric pressure graph

pressure graph

Barometric

Barometric pressure

pressure

Temperature

While in the Timekeeping Mode or in any of the sensor modes, press to take barometric pressure and temperature readings.

• BARO will appea r on the display, indicat ing that barome tric

pressure and te mperature readin g are in progress. T he results will appear o n the display af ter about one se cond.

• After you pre ss B, the watch will ta ke readings every ﬁ ve s econds

for the ﬁ rst thre e minutes, and t hen every two m inutes after t hat.

Note

• Press D to return to the T imekeeping M ode.

Pressure

Pressure differential

differential pointer

pointer

• The watch will ret urn to the Timeke eping Mode au tomatically if y ou

do not perf orm any operati on for about 1 ho ur after enter ing the Barometer/Thermometer Mode.

E-30

E-31

+ 8 hidden pages