Casio Watch QW 3135 User Manual

MO0909-EA

Operation Guide 3135 3206

Getting Acquainted

• The watch continues to operate, even when it is not exposed to light.

Leaving the watch in the dark can cause the battery to run down, which will

result in some watch functions being disabled. If the battery goes dead, you

will have to re-configure watch settings after recharging. To ensure normal

watch operation, be sure to keep it exposed to light as much as possible.

Congratulations upon your selection of this CASIO watch. To get the most out

of your purchase, be sure to read this manual carefully.

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.

Battery charges in the light.

Battery discharges in the dark.

Bright light

Solar cell

(Converts light to

electrical power.)

Electrical

energy

Warning!

• 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.

• The Moon phase indicator and tide graph data that appear on the

display of this watch are not intended for navigation purposes. Always

use proper instruments and resources to obtain data for navigation

purposes.

All

functions

enabled

LEVEL 1

LEVEL 2

LEVEL 1

LEVEL 2

LEVEL 3

LEVEL 4

Some

functions

disabled

LEVEL 3

LEVEL 4

Dis-

charge

Charge

Rechargeable battery

• This watch is not an instrument for calculating low tide and high tide

times. The tide graph of this watch is intended to provide a reasonable

approximation of tidal movements only.

• When engaging in mountain climbing or other activities in which losing

your way can create a dangerous or life-threatening situation, always be

sure to use a second compass to confirm 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.

• The actual level at which some functions are disabled depends on the

watch model.

• Frequent display illumination can run down the battery quickly and require

charging. The following guidelines give an idea of the charging time

required to recover from a single illumination operation.

Approximately five minutes exposure to bright sunlight coming in through

a window

Approximately 50 minutes exposure to indoor fluorescent lighting

• Be sure to read “Power Supply” for important information you need to

know when exposing the watch to bright light.

Keep the watch exposed to bright light

The electricity generated by the solar cell of the

watch is stored by a built-in battery. Leaving or

If the display of the watch is blank...

If the display of the watch is blank, it means that the watch’s Power Saving

function has turned off the display to conserve power.

• See “Power Saving” for more information.

Bright light

using the watch where it is not exposed to light

causes the battery to run down. Make sure the

watch is exposed to light as much as possible.

• When you are not wearing the watch on your

wrist, position the face so it is pointed at a

source of bright light.

About This Manual

Solar cell

• Depending on the model of your watch, display

text appears either as dark figures on a light

background (Module 3135), or light figures on a

dark background (Module 3206). All sample

displays in this manual are shown using dark

figures on a light background.

• You should try to keep the watch outside of

your sleeve as much as possible. Charging is

reduced significantly if the face is covered only

partially.

• Button operations are indicated using the

letters shown in the illustration.

(Light)

Module 3135

• Each section of this manual provides you with

the information you need to perform operations

in each mode. Further details and technical

information can be found in the “Reference”

section.

Module 3206

• You can use buttons A, B, and Cto enter a sensor mode directly from

the Timekeeping Mode or from another sensor mode. To enter a sensor

mode from the Tide/Moon Data, Countdown Timer, Stopwatch, World Time,

Alarm, or Data Recall Mode, first enter the Timekeeping Mode and then

press the applicable button.

General Guide

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

between modes.

• In any mode, press Lto illuminate the display.

Timekeeping Mode

Sensor Modes

Stopwatch

Mode

Countdown

Timer Mode

Tide/Moon Data

Mode

Press

Press A.

Press C.

Press B.

Digital

Barometer/

Compass Mode

Thermometer Mode

Altimeter Mode

Data Recall

Mode

World Time Mode

Alarm Mode

Press D.

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Operation Guide 3135 3206

• Any ongoing direction measurement operation is paused temporarily while

To perform magnetic declination correction

1. In the Digital Compass Mode, hold down E

the watch is performing an alert operation (daily alarm, Hourly Time Signal,

countdown timer alarm) or while illumination is turned on (by pressing L).

The measurement operation resumes for its remaining duration after the

operation that caused it to pause is finished.

for about two seconds until the magnetic

declination angle and magnetic declination

angle direction values start to flash on the

display. This is the setting screen.

Magnetic declination

angle direction

• The following table shows the meanings of each of the direction

abbreviations that appear on the display.

2. Use A(+) and C(–) to change the magnetic

declination angle and magnetic declination

angle direction settings.

Direction Meaning Direction Meaning Direction Meaning Direction Meaning

North-

East-

• You can select a value within the range of

W 90° to E 90° with these settings.

• The following explains magnetic declination

angle direction settings.

North

East

NNE

ESE

Northeast

Southeast

ENE

SSE

northeast

East-

southeast

South-

southeast

Magnetic

declination

angle value

South-

West-

South

West

SSW

WNW

SW Southwest WSW

NW Northwest NNW

OFF: No magnetic declination correction

performed. The magnetic declination

angle with this setting is 0°.

southwest

West-

northwest

North-

northwest

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

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

• You can turn off (OFF) magnetic declination correction (which effectively

makes the magnetic declination angle: 0°) by pressing Aand Cat the

same time.

• See “Digital Compass Precautions” for other important information about

taking direction readings.

Digital Compass Precautions

This watch features a built-in magnetic bearing sensor that detects terrestrial

magnetism. This means that north indicated by this watch is magnetic north,

which is somewhat different from true polar north. The magnetic north pole is

located in northern Canada, while the magnetic south pole is in southern

Australia. Note that the difference between magnetic north and true north as

measured with all magnetic compasses tends to be greater as one gets

closer to either of the magnetic poles.You also should remember that some

maps indicate true north (instead of magnetic north), and so you should make

allowances when using such maps with this watch.

• The illustration above, for example, shows the value you should input

and the direction setting you should select when the map shows a

magnetic declination of 1° West.

3. When the setting is the way you want, press Eto exit the setting screen.

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.

Location

• Taking a direction reading when you are near a source of strong magnetism

can cause large errors in 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.)

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

etc.

• Make sure that you do not move the watch while calibration of either

direction is in progress.

• 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 field, for example, calibrate in an open

field.

To perform bidirectional calibration

1. In the Digital Compass Mode, hold down E

for about two seconds until the magnetic

declination angle and magnetic declination

angle direction values start to flash on the

display. This is the setting screen.

2. Press Dto display the bidirectional

calibration screen.

• At this time, the north pointer flashes at the

12 o’clock position to indicate that the watch

is ready to calibrate the first direction.

• Accurate readings also are impossible indoors, especially inside ferro-

concrete structures. This is because the metal framework of such structures

picks up magnetism from appliances, etc.

Storage

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

magnetized. Because of this, you should be sure to store the watch away

from magnets or any other sources of strong magnetism, including:

permanent magnets (magnetic necklaces, etc.) and household appliances

(TVs, personal computers, washing machines, freezers, etc.)

• Whenever you suspect that the watch may have become magnetized,

perform one of the calibration procedures under “Calibrating the Bearing

Sensor”.

3. Place the watch on a level surface facing any direction you want, and

press Cto calibrate the first direction.

• xxx is shown on the display while calibration is being performed. When

calibration is successful, the display will show ^OKand x2x, and the

north pointer flashes at the 6 o’clock position. This means that the watch

is ready for calibration of the second direction.

4. Rotate the watch 180 degrees.

5. Press Cagain to calibrate the second direction.

• xxx is shown on the display while calibration is being performed. When

calibration is successful, the display will show ^OKand the Digital Compass

Mode (showing the angle value) screen.

Calibrating the Bearing Sensor

You should calibrate the bearing sensor whenever you feel that the direction

readings being produced by the watch are off. There are three different

calibration methods available: magnetic declination correction, bidirectional

calibration, and northerly 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.

• If xxx appears and then changes to

(error) on the calibration

screen, it means that there is something wrong with the sensor. When

ERR

You can perform this procedure when the magnetic declination angle is

indicated on the map you are using.

disappears after about one second, try performing the calibration

ERR

again. If

keeps appearing, contact your original dealer or nearest

ERR

Note that you can input the declination angle in degree units only, so you

may need to round off the value specified 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°.

authorized CASIO distributor to have the watch checked.

To perform northerly calibration

1. In the Digital Compass Mode, hold down E

for about two seconds until the magnetic

declination angle and magnetic declination

angle direction values start to flash on the

display. This is the setting screen.

2. Press Dtwice to display the northerly

calibration screen.

• Bidirectional Calibration and Northerly Calibration

Bidirectional calibration and northerly calibration calibrate the accuracy of

the direction 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. With northerly calibration, you

“teach” the watch which way is north (which you have to determine with

another compass or some other means).

• At this time, ^-N-(north) appears on the

display.

3. Place the watch on a level surface, and position it so that its 12 o’clock

position points north (as measured with another compass).

4. Press Cto start the calibration operation.

Important!

• If you want to perform both bidirectional and northerly calibration, be sure

to perform bidirectional calibration first, and then perform northerly

calibration. This is necessary because bidirectional calibration cancels any

existing northerly calibration setting.

•

--- is shown on the display while calibration is being performed. When

calibration is successful, the display will show ^OKand the Digital Compass

Mode (with ° shown as the angle value).

• The more correctly you perform bidirectional calibration, the better the

accuracy of the bearing sensor readouts.You should perform bidirectional

calibration whenever you change environments where you use the bearing

sensor, and whenever you feel that the bearing sensor is producing

incorrect readings.

• If ^---appears and then changes to

(error) on the calibration

ERR

screen, it means that there is something wrong with the sensor. When

disappears after about one second, try performing the calibration

ERR

again. If

keeps appearing, contact your original dealer or nearest

ERR

authorized CASIO distributor to have the watch checked.

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Operation Guide 3135 3206

3. In the Timekeeping, Digital Compass,

Using the Digital Compass While Mountain Climbing or

12 o’clock

position

Barometer/Thermometer, or Altimeter Mode,

press Cto take a compass reading.

• The compass reading information (angle

value, direction indicator, and four pointers

based on the 12 o’clock position of the

watch) will appear on the display after about

two seconds.

• The compass reading information will

remain on the display for only about 20

seconds after you press C. After that it will

disappear. If you want to re-display the

compass reading information, press C

again to take another reading.

Hiking

This section describes three real-life situations where you could use the

watch’s built-in digital compass.

• To set a map and find 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.

North

pointer

• To find the bearing to an objective

• To determine the direction angle to an objective on a map and head in that

direction

Direction angle of

current reading

To set a map and find your current location

4. Rotate the bezel so the “N” (North) indicator on the bezel is aligned with

the north indicator produced by the reading in step 3.

5. To advance to your objective proceed in the direction that 12 o’clock is

pointing.

North indicated

on the map

1. With the watch on your wrist, position it so the

face is horizontal.

2. In the Timekeeping, Digital Compass,

Barometer/Thermometer, or Altimeter Mode,

press Cto take a compass reading.

• The reading will appear on the display after

about two seconds.

Note

• When mountain climbing or hiking, conditions or geographic contours may

make it impossible for you to advance in a straight line. If this happens,

return to step 1 and save a new direction to the objective.

3. Rotate the map without moving the watch so

the northerly direction indicated on the map

matches north as indicated by the watch.

• If the watch is configured to indicate

magnetic north, align the map’s magnetic

north with the watch indication. If the watch

has been configured with a declination to

correct to true north, align the map’s true

north with the watch indication.

Current

location

Barometer/Thermometer

This watch uses a pressure sensor to measure air pressure (barometric

pressure) and a temperature sensor to measure temperature.

• You can calibrate the pressure sensor and the temperature sensor if you

suspect that readings are incorrect.

North indicated by

north pointer

• This will position the map in accordance

with your current location.

To take barometric pressure and temperature readings

Pressure

differential

pointer

Pressing Bin the Timekeeping Mode or in any

of other sensor modes enters the Barometer/

Thermometer Mode and starts barometric

pressure and temperature measurements

automatically .

• It can take up to four or five seconds for the

barometric pressure reading to appear after

you enter the Barometer/Thermometer Mode.

• Barometric pressure is displayed in units of

1hPa (or 0.05 inHg).

4. Determine your location as you check the

geographic contours around you.

Barometric

pressure graph

To find the bearing to an objective

1. Take a compass reading and then set the map

so its northerly indication is aligned with north

as indicated by the watch, and determine your

current location.

• See “To set a map and find your current

location” for information about how to

perform the above step.

2. Set the map so the direction you want to travel

on the map is pointed straight in front of you.

3. With the watch on your wrist, position it so the

face is horizontal.

4. In the Timekeeping, Digital Compass,

Barometer/Thermometer, or Altimeter Mode,

press Cto take a compass reading.

• The reading will appear on the display after

about two seconds.

Objective

Barometric

pressure

Temperature

Current

location

• The displayed barometric pressure value changes to

hPa (or inHg) if

xxxx

a measured barometric pressure falls outside the range of 260 hPa to

1100 hPa (7.65 inHg to 32.45 inHg).The barometric pressure value will

reappear as soon as the measured barometric pressure is within the

allowable range.

12 o’clock

position

• Temperature is displayed in units of 0.1°C (or 0.2°F).

• The displayed temperature value changes to

°C (or °F) if a

xxx x

measured temperature falls outside the range of –10.0°C to 60.0°C (14.0°F

to 140.0°F). The temperature value will reappear as soon as the measured

temperature is within the allowable range.

5. Still holding the map in front of you, turn your

body until north as indicated by the watch and

the northerly direction on the map are aligned.

• In some areas, barometric pressure is expressed in millibars (mb) instead

of hectopascals (hPa). It really makes no difference, because 1hPa = 1mb.

• You can select either hectopascals (hPa) or inchesHg (inHg) as the display

unit for the measured barometric pressure, and Celsius (°C) or Fahrenheit

(°F) as the display unit for the measured temperature value. See “To select

the temperature, barometric pressure, and altitude units”.

• This will position the map relative to your current location, so the bearing to

your objective is straight ahead of you.

To determine the direction angle to an objective on a map and head

in that direction

• See “Barometer and Thermometer Precautions” for important precautions.

Note

• The following procedure is possible only with a

watch that has a rotary bezel.

1. Take a compass reading and then set the map

so its northerly indication is aligned with north

as indicated by the watch, and determine your

current location.

• See “To set a map and find your current

location” for information about how to

perform the above step.

2. As shown in the illustration to the left, change

your position so you (and the 12 o’clock

position of the watch) are pointed in the

direction of objective, while keeping the map

aligned with the readings being produced by

the watch.

Barometric Pressure Graph

Barometric pressure indicates changes in the atmosphere. By monitoring

these changes you can predict the weather with reasonable accuracy.

This watch takes barometric pressure measurements automatically every two

hours (at the top of each even-numbered hour), regardless of its current

mode. Measurement results are used to produce barometric pressure graph

and barometric pressure differential pointer readings.

Objective

Current

location

12 o’clock

position

The barometric pressure graph shows readings of previous measurements for

up to 20 hours.The horizontal axis of the graph represents time, with each dot

standing for two hours. The rightmost dot represents the most recent reading.

The vertical axis of the graph represents barometric pressure, with each dot

standing for the relative difference between its reading and that of the dots

next to it. Each dot represents 1hPa.

The following shows how to interpret the data that appears on the barometric

pressure graph.

• If you find it difficult to perform the above step while keeping everything

aligned, first move into the correct position (12 o’clock position of the

watch pointed at the objective) without worrying about the orientation of

the map. Next, perform step 1 again to set the map.

A rising graph generally means improving weather.

A falling graph generally means deteriorating weather.

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Operation Guide 3135 3206

Note that if there are sudden changes in barometric

When you measure altitude using a reference altitude specified by you

After you specify a reference altitude, the watch uses that value to convert the

current measured barometric pressure value to altitude.

pressure or temperature, the graph line of past

measurements may run off the top or bottom of the display.

The entire graph will become visible once barometric

conditions stabilize.

The following conditions cause the barometric pressure

measurement to be skipped, with the corresponding point on

the barometric pressure graph being left blank.

• When mountain climbing, you can set the

Not visible on

the display.

reference value in accordance with a marker

along the way or altitude information from a

map. After that, the altitude readings

produced by the watch will be more accurate

than they would without a reference altitude.

400

• Barometric reading that is out of range (260 hPa/mb to 1,100 hPa/mb or

7.65 inHg to 32.45 inHg)

• Sensor malfunction

Displaying Your Current Altitude

You can use the procedure described in this section to display your current

altitude. If you leave the watch in the Altimeter Mode, it will update the

displayed altitude value regularly, and indicate reading-to-reading changes in

the altitude graph at the top of the display.

Barometric Pressure Differential Pointer

This pointer indicates the relative difference between the most recent

barometric pressure reading indicated on the barometric pressure graph, and

the current barometric pressure value displayed in the Barometer/

Thermometer Mode.

Important!

• Pressure differential is indicated in the range of 5 hPa, in 1-hPa units.

• The barometric pressure differential pointer is not displayed when the

displayed current barometric value is outside of the allowable measurement

range (260 to 1,100 hPa).

• Barometric pressure is calculated and displayed using hPa as the standard.

The barometric pressure differential also can be read in inHg units as

shown in the illustration.

• The procedure in this section simply displays values indicating your current

altitude, without storing them in watch memory. For information about

recording altitude readings in watch memory, see “Saving Altitude Data”.

To display your current altitude

1. Press Ain the Timekeeping Mode or in any

of the other sensor modes to enter the

Current altitude

Altitude

graph

Altimeter Mode.

Current pressure greater

inHg values

• The watch will start altitude measurement

automatically, and display the result.

• It can take up to four or five seconds for the

altitude reading to appear after you enter

the Altimeter Mode.

than most recent

measured pressure

hPa values

Barometric pressure

differential

2. Leave the watch in the Altimeter Mode if you

want the displayed altitude value and the

altitude graph contents to be updated at

regular intervals.

Current time

•

Readings are taken at five-second intervals for the first three minutes

after you enter the Altimeter Mode. After that, readings are taken at two-

minute intervals.

If you want to restart the altitude measurement operation at any point,

press A.

Pressure differential

examples in the

illustration are indicated

in 3 hPa/0.1 inHg steps.

Current pressure less

than most recent

measured pressure

3. To stop the altitude measurement operation, press Dto exit the Altimeter

Mode.

About Barometric and Temperature Measurements

• Barometric pressure and temperature measurement operations are

performed as soon as you enter the Barometer/Thermometer Mode. After

that, barometric pressure and temperature measurements are taken every

five seconds.

Notes

• Normally, displayed altitude values are based on the watch’s preset

conversion values.You also can specify a reference altitude, if you want.

See “Specifying a Reference Altitude”.

• Altitude is displayed in units of 5 meters (20 feet).

• The measurement range for altitude is –700 to 10,000 meters (–2,300 to

32,800 feet).

• You also can perform a barometric pressure and temperature measurement

at any time by pressing Bin the Barometer/Thermometer Mode.

• The measured altitude may be a negative value in cases where there is a

reference altitude value set or because of certain atmospheric conditions.

• The displayed altitude value changes to xxxx meters (or feet) if a

measured altitude falls outside the measurement range. The altitude value

will be displayed again as soon as the measured altitude is within the

allowable range.

• You can change the measurement unit for displayed altitude values to either

meters (m) or feet (ft). See “To select the temperature, barometric pressure,

and altitude units”.

Altimeter

The watch’s altimeter uses a pressure sensor to detect current air pressure,

which is then used to estimate the current altitude based on ISA (International

Standard Atmosphere) preset values.You also can specify a reference

altitude, which the watch will use to calculate your current altitude based on

the value you specify. Altimeter functions also include storage of

measurement data in memory.

Important!

Saving Altitude Data

• This watch estimates altitude based on air pressure. This means that

altitude readings for the same location may vary if air pressure changes.

• The semiconductor pressure sensor used by the watch for altitude

measurements also is affected by temperature. When taking altitude

measurements, make sure the watch is not subjected to temperature

changes.

The watch automatically keeps track of the high altitude achieved to date.

You also can save altitude readings with the touch of a button.

• You can recall and view altitude data using the Data Recall Mode. For

details, see “Recalling Altitude Data”.

Automatic High Altitude Record

Whenever an altitude measurement in the Altimeter Mode is greater than the

currently stored high altitude value, the watch will replace the old value with

the new measurement automatically, along with the reading date and time.

This feature is always enabled and cannot be turned off.

• If the current reading is the same as the existing high altitude value, the

older value will be retained.

• To avoid the effect of sudden temperature changes during measurement,

keep the watch on your wrist in direct contact with your skin.

• Do not rely upon this watch for altitude measurements or perform button

operations while sky diving, hang gliding, or paragliding, while riding a

gyrocopter, glider, or any other aircraft, or while engaging in any other

activity where there is the chance of sudden altitude changes.

• Do not use this watch for measuring altitude in applications that demand

professional or industrial level precision.

Saving an Altitude Reading

Perform the following procedure whenever you want to save an altitude reading.

• Remember that the air inside of a commercial aircraft is pressurized.

Because of this, the readings produced by this watch will not match the

altitude readings announced or indicated the flight crew.

To save an altitude reading

1. Press

2. Hold down

to enter the Altimeter Mode.

until REC flashes on the display.

How the Altimeter Measures Altitude

The altimeter can measure altitude based on its own preset values, or a

reference altitude specified by you.

• At this time the watch will beep and the

current altitude reading value will be saved

along with the reading date (month - day)

and time.

When you measure altitude based on preset values

Data produced by the watch’s barometric pressure sensor is converted to

approximate altitude based on ISA (International Standard Atmosphere)

conversion values stored in watch memory.

3. REC will stop flashing and the watch will

return to the Altimeter Mode automatically

after data save is complete.

• Memory can store up to 24 altitude records. Storing a new reading while

there are already 24 in memory will delete the oldest record currently in

memory to make room for the new reading.

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Operation Guide 3135 3206

Tide/Moon Data

Specifying a Reference Altitude

In the Tide/Moon Data Mode, you can see the current tide and the current

date’s Moon phase for your Home City.You can specify a date and view tide

and Moon data for that date.

• See “Moon Phase Indicator” for information about the Moon phase indicator

and “Tide Graph” for information about the tide graph.

• All of the operations in this section are performed in the Tide/Moon Data

Mode.

After you specify a reference altitude, the watch adjusts its air-pressure-to-

altitude conversion calculation accordingly. The altitude measurements

produced by this watch are subject to error caused by changes in air

pressure. Because of this, we recommend that you update the reference

altitude whenever one is available during your climb.

To set a reference altitude

1. In the Altimeter Mode, hold down Efor about

two seconds until either OFF or the current

reference altitude value starts to flash. This is

the setting screen.

2. Press A(+) or C(–) to change the current

reference altitude value by 5 meters (or 20 feet).

• You can set the reference altitude within the

range of –10,000 to 10,000 meters (–32,800

to 32,800 feet).

Tide Data

The Tide Graph that appears first when you enter the Tide/Moon Data Mode

shows the data at 6:00 a.m. for your currently selected Home City on the

current date, according to the Timekeeping Mode. From there you can specify

another date or time.

• If the tide data is not correct, check your Timekeeping Mode settings and

correct them if necessary.

• If you feel that the information shown by the Tide Graph is different from

actual tide conditions, you need to adjust the high tide time. See “Adjusting

the High Tide Time” for more information.

• Pressing Aand Cat the same time returns to OFF (no reference

altitude), so the watch performs air pressure to altitude conversions

based on preset data only.

Moon Data

The Moon phase and Moon age information that appears first when you enter

the Tide/Moon Data Mode shows the data at noon for your currently selected

Home City on the current date, according to the Timekeeping Mode. After that

you can specify another date to view data.

3. Press Eto exit the setting screen.

Altitude graph

The altitude graph shows Altimeter Mode

measurement results.

• The vertical axis of the graph represents

altitude, and each dot stands for 10 meters (40

• If the Moon data is not correct, check your Timekeeping Mode settings and

correct them if necessary.

• If the Moon phase indicator shows a phase that is a mirror image of the

actual moon phase in your area, you can use the procedure under

“Reversing the Displayed Moon Phase” to change it.

Altitude

feet).

Time

• The horizontal axis represents time, and the flashing dot in the rightmost

column indicates the latest measurement result. For the first three minutes,

each dot represents five seconds. After that, each dot represents two

minutes.

• An out of range measurement result or a measurement error will cause the

column of dots for that measurement to be blank (skipped).

To view Moon Data for a particular date, or Tide Data for a

particular date and time

1. In the Tide/Moon Data Mode, use A(+) and

C(–) to select the date you want.

Moon age

Moon

phase

•

After you select a date, the watch starts to

calculate Moon and tide data for the date you

selected. The calculation operation takes

about 10 seconds, and is indicated by

Recalling Altitude Data

In the Data Recall Mode, you can recall and view altitude reading records you

stored in the Altimeter Mode, as well as the high altitude record.

movement in the Moon Phase indicator and

the Tide Graph on the display.You can use

and to change to another date while a

calculation operation is in progress.

• All of the operations in this section are performed in the Data Recall Mode.

Data Screens

• After calculation is complete, the Moon

information (Moon age and phase) and tide

information (current tide level and tide

range) will be displayed for the date you

selected.

Current

tide range

Current

tide level

The following explains the contents of each of the screens that appear in the

Data Recall Mode.

Note

• While the altitude record or high altitude screen is displayed, the bottom

part of the display alternates between the measurement date (month and

day) and measurement time, at 1-second intervals.

2. While the Moon information (Moon age and phase) and tide information

(tide level and tide range for the current date) are displayed, you can press

B(+) to advance the displayed tide range by one hour.

• You also can use A(+) and C(–) to change the date.

• Update of the Moon Phase indicator and the Tide Graph is stopped while

any of the following is occurring.

Measurement date

(Month – Day)

Altitude

record

indicator

Alternates at

1-second intervals.

During button operation

While an alarm is sounding

Measurement time

(Hour : Minute)

Altitude

While a countdown beeper is sounding

During display illumination

During a 2-hour barometric pressure reading operation

To view altitude reading records and the high altitude record

1. Enter the Data Recall Mode.

• After about one second a record with MAX on the top will appear. This is

Adjusting the High Tide Time

Use the following procedure to adjust the high tide time within a particular

date.You can find out high tide information for your area from a tide table, the

Internet, or your local newspaper.

the high altitude record.

2. Use A(+) and C(–) to scroll through the other altitude reading records.

To delete all altitude data currently in memory

1. In the Data Recall Mode, hold down Euntil

CLR flashes on the display and the watch

beeps twice.

To adjust the high tide time

1. In the Tide/Moon Data Mode, use A(+) and

C(–) to select the date you want.

• Releasing Eat any time while CLR is

flashing on the display will cancel the delete

operation.

2. Keep Edepressed for two seconds.

• The watch will beep to indicate that all of the

altitude data stored in watch memory (including

readings you stored and the high altitude

value) is deleted.

• After you select a date, the watch starts to

calculate Moon and tide data for the date

you selected. The calculation operation

takes about 10 seconds, and is indicated by

movement in the Moon Phase indicator and

the Tide Graph on the display.You can use

Aand Cto change to another date while

a calculation operation is in progress.

• After calculation is complete, the Moon

information (Moon age and phase) and tide

information (current tide level and tide

range) will be displayed for the date you

selected.

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Operation Guide 3135 3206

2. While the Moon information (Moon age and

phase) and tide information (current tide level

and tide range) are displayed, hold down E

until the hour digits start to flash. This is the

high tide time hour adjustment screen.

3. Use A(+) and C(–) to change the hour

setting.

4. When the hour is the setting you want, press

• This will cause the minute digits to flash.

5. Use A(+) and C(–) to change the minute

setting.

Countdown End Beeper

Hour

The watch beeps each second of the final 10 seconds before a countdown

reaches zero, and at zero. The first five beeps (seconds 10 through 6) are

higher pitched than the final five beeps (seconds 5 through 1). The watch

emits a longer beep to signal when the countdown reaches zero.

Progress Beeper

The progress beeper actually includes two beepers: a reset time beeper and

a reset period beeper.

• Note that the reset time beeper and reset period beeper operate only while

the progress beeper is turned on. For more information, see “To turn the

progress beeper on and off”.

Minute

6. When the minute setting is the way you want,

press Eto exit the adjustment screen and

return to the Tide/Moon Data Mode screen.

• Pressing Aand Cat the same time while the

time adjustment screen is displayed (steps 2

through 5 above) will return the high tide time

to its initial factory default setting.

ResetTime Beeper

The reset time beeper is similar to the countdown end beeper. The watch

beeps each second of the final 10 seconds before the countdown reaches the

reset time.

Reset Period Beeper

The reset period is in the portion of the countdown between the reset time

and zero. While timing is the reset period, the watch will beep four times at the

top of each minute and 10 seconds before the end of the countdown.

• The high tide time setting is not affected by the DST (summer time) setting

of the Timekeeping Mode.

• On some days, there are two high tides. With this watch, you can adjust the

first high tide time only. The second high tide time for that day is adjusted

automatically based on the first high tide time.

Countdown Timer Examples

Countdown start time: 10 minutes; Reset time: 5 minutes

Progress beeper: On

Reset Period

Reversing the Displayed Moon Phase

The left-right (east-west) appearance of the Moon depends on whether the

Moon is north of you (northerly view) or south of you (southerly view) as you

view it.

Start Time

10'00"

Reset Time

5'00"

Reset Period Beeper

Countdown

End Beeper

4'00"

3'00"

2'00" 1'00" 0'10" 0'00"

Reset Time Beeper

You can use the procedure below to reverse the displayed Moon phase so it

matches the actual appearance of the Moon where you are located.

• To determine the viewing direction of the Moon, use a compass to take a

direction reading of the Moon at its meridian passage.

• For information about the Moon phase indicator, see “Moon Phase

Indicator”.

0'10" 0'09" 0'08" 0'07" 0'06" 0'05" 0'04" 0'03" 0'02" 0'01" 0'00"

To configure countdown timer settings

1. While the countdown start time is on the

display in the Countdown Timer Mode, hold

down Euntil the countdown start time setting

starts to flash, which indicates the setting

screen.

To reverse the displayed Moon phase

1. In the Tide/Moon Data Mode, hold down E

until the hour digits start to flash.

2. Press Dtwice.

• If the countdown start time is not displayed,

use the procedure under “To use the

countdown timer” to display it.

2. Press Dto move the flashing in the sequence

shown below to select other settings.

• This will cause the Moon phase indicator to

flash. This is the indicator switching screen.

3. Press Ato toggle the Moon phase indicator

between the southerly view (indicated by

) and northerly view (indicated by

• Northerly view: Moon is north of you.

• Southerly view: Moon is south of you.

Start

Time

Reset

Time

4. When the Moon phase indicator setting is the

way you want, press Eto exit the switching

screen and return to the Tide/Moon Data

Mode screen.

3. When the setting you want to change is flashing, use Aand Cto change

it as described below.

Setting

Screen

Button Operations

Countdown Timer

Start Time

Use A(+) and C(–) to change the setting.

•You can set a start time in the range of 1 to 60

minutes in 1-minute increments.

Seconds

The countdown timer can be set within a range of

one minute to 60 minutes. An alarm sounds when

the timer reaches zero. The press of a button will

start the countdown timer from the currently set

start time, and a progress beeper sounds to keep

you informed of the current status of the

countdown. These features make it possible to

use the watch for yacht racing.

Reset Time

Use A(+) and C(–) to change the setting.

•You can set a reset time in the range of 1 to 5

minutes in 1-minute increments.

4. Press Eto exit the setting screen.

• The reset time setting must be less than the countdown start time setting.

• All of the operations in this section are

performed in the Countdown Timer Mode,

which you enter by pressing D.

To turn the progress beeper on and off

Pressing Bwhile the countdown start time is on the display or while a

countdown timer operation is in progress in the Countdown Timer Mode

Current

time

Minutes

toggles progress beeper operation on (

displayed) and off (

displayed).

Configuring Countdown Timer Settings

The following are the settings you should configure before actually using the

countdown timer.

Countdown start time and reset time

Progress beeper (on/off)

• See “To configure countdown timer settings” for information about setting up

the timer.

• For details about the progress beeper, see “Progress Beeper”.

To use the countdown timer

In the Countdown Timer Mode, press Ato start

the countdown timer.

• The countdown timer measurement operation

continues even if you exit the Countdown Timer

Mode.

• The table below describes button operations

you can perform to control countdown

operations.

Reset Time

You can set a “reset time”, which is a kind of alternate countdown start time

you can recall with the press of a button any time a countdown operation is in

progress.

To do this:

Stop the countdown operation

Do this:

Press A.

Countdown Timer Beeper Operations

Resume a stopped countdown operation

Display the countdown start time

Press Aagain.

While the countdown is

stopped, press C.

The watch beeps at various times during a countdown so you can keep

informed about the countdown status without looking at the display. The

following describes the types of beeper operations the watch performs during

a countdown.

Stop the countdown operation and display the reset Press C.

time

Start the countdown from the displayed reset time Press A.

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Operation Guide 3135 3206

Stopwatch

To set an alarm time

Hours

The stopwatch lets you measure elapsed time,

split times, and two finishes.

• The display range of the stopwatch is 23 hours,

59 minutes, 59.99 seconds.

Alarm on

indicator

1. In the Alarm Mode, use Aand Cto scroll

through the alarm screens until the one whose

time you want to set is displayed.

1/100 second

• The stopwatch continues to run, restarting from

zero after it reaches its limit, until you stop it.

• The stopwatch measurement operation

continues even if you exit the Stopwatch Mode.

• Exiting the Stopwatch Mode while a split time is

frozen on the display clears the split time and

returns to elapsed time measurement.

• All of the operations in this section are

performed in the Stopwatch Mode, which you

enter by pressing D.

AL1

AL2

AL3

SIG

AL5

AL4

On/Off status

2. Hold down Euntil the hour setting of the alarm time start to flash, which

indicates the setting screen.

• This automatically turns on the alarm.

Minutes

Current time

Seconds

3. Press Dto move the flashing between the hour and minute settings.

4. While a setting is flashing, use A(+) and C(–) to change it.

• When setting the alarm time using the 12-hour format, take care to set

the time correctly as a.m. (no indicator) or p.m. (P indicator).

5. Press Eto exit the setting screen.

To measure times with the stopwatch

Elapsed Time

Start

Stop

Re-start

Stop

Clear

Alarm Operation

The alarm sounds in all modes at the preset time for about 10 seconds, or

until you stop it by pressing any button.

Split Time

Start

Split

(SPL displayed)

Split release

Stop

Clear

To test the alarm

In the Alarm Mode, hold down Ato sound the alarm.

Two Finishes

To turn an alarm and the Hourly Time Signal on and off

1. In the Alarm Mode, use Aand Cto select an alarm or the Hourly Time

Signal.

2. When the alarm or the Hourly Time Signal you want is selected, press B

to turn it on (ON) and off (OF).

Start

Split

Stop

Split release

Display time of

second runner.

Clear

First runner Second runner

finishes.

Display time

of first runner.

finishes.

Indicates alarm is ON.

Indicates Hourly Time Signal is ON.

• The alarm on indicator (

) and the Hourly Time Signal on indicator (

)

are shown on the display in all modes while these functions are turned on.

• If any alarm is on, the alarm on indicator is shown on the display in all

modes.

World Time

World Time displays the current time in 33 cities

(29 time zones) around the world.

Current time in the zone

of the selected city code

• If the current time shown for a city is wrong,

check your Home City time settings and make

the necessary changes.

• All of the operations in this section are

performed in the World Time Mode, which you

enter by pressing D.

City code

Illumination

Auto light switch

on indicator

The display of the watch is illuminated using an

EL (electro-luminescent) panel for easy reading

in the dark. The watch’s auto light switch turns on

illumination automatically when you angle the

watch towards your face.

To view the time in another city

In the World Time Mode, use A(east) and C

(west) to scroll through city codes (time zones).

• For full information on city codes, see the “City

Code Table”.

• The auto light switch must be turned on

(indicated by the auto light switch on indicator)

for it to operate.

• See “Illumination Precautions” for other

important information about using illumination.

Timekeeping

Mode time

To toggle a city code time between Standard Time and Daylight

Saving Time

To turn on illumination manually

Press Lin any mode to illuminate the display for about one second.

• The above operation turns on illumination regardless of the current auto

light switch setting.

1. In the World Time Mode, use A(east) and C

DST indicator

(west) to display the city code (time zone)

whose Standard Time/Daylight Saving Time

setting you want to change.

• Illumination is disabled while configuring sensor measurement mode

settings, and during bearing sensor calibration.

2. Hold down Eto toggle between Daylight

Saving Time (DST indicator displayed) and

Standard Time (DST indicator not displayed).

• The DST indicator appears on the display

whenever you display a city code for which

Daylight Saving Time is turned on.

About the Auto Light Switch

Turning on the auto light switch causes illumination to turn on, whenever you

position your wrist as described below in any mode.

Note that this watch features a “Full Auto EL Light”, so the auto light switch

operates only when available light is below a certain level. It does not

illuminate the display under bright light.

• The auto light switch is always disabled, regardless of its on/off setting,

when any one of the following conditions exists.

While an alarm is sounding

• You cannot toggle between Daylight Saving Time and Standard Time if the

displayed city code is ^UTC.

• Note that the DST/Standard Time setting affects only the currently

displayed city code. Other city codes are not affected.

During sensor measurement

While a bearing sensor calibration operation is being performed in the

Digital Compass Mode

During tide data calculation

Alarms

You can set five independent daily alarms. When

an alarm is turned on, the alarm tone sounds

when the alarm time is reached.

Moving the watch to a position that is parallel to the ground and then tilting

it towards you more than 40 degrees causes illumination to turn on.

• Wear the watch on the outside of your wrist.

Alarm number

You also can turn on an Hourly Time Signal,

which will cause the watch to beep twice every

hour on the hour.

• The alarm number (AL1 through AL5)

indicates an alarm screen. SIG is shown when

the Hourly Time Signal screen is on the display.

• When you enter the Alarm Mode, the data you

were viewing when you last exited the mode

Parallel to

More than

ground

40°

Alarm time

(Hour : Minute)

appears first.

• All of the operations in this section are

performed in the Alarm Mode, which you enter

Current time

by pressing D.

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Operation Guide 3135 3206

Warning!

There are two standard methods of expressing altitude: Absolute altitude and

relative altitude. Absolute altitude expresses an absolute height above sea

level. Relative altitude expresses the difference between the height of two

different places.

• Always make sure you are in a safe place whenever you are reading

the display of the watch using the auto light switch. Be especially

careful when running or engaged in any other activity that can result

in accident or injury. Also take care that sudden illumination by the

auto light switch does not startle or distract others around you.

• When you are wearing the watch, make sure that its auto light switch

is turned off before riding on a bicycle or operating a motorcycle or

any other motor vehicle. Sudden and unintended operation of the auto

light switch can create a distraction, which can result in a traffic

accident and serious personal injury.

Height of building 130 m Rooftop at an altitude of

(relative altitude)

230 m above sea level

(absolute altitude)

To turn the auto light switch on and off

In the Timekeeping Mode, hold down Lfor about three seconds to toggle the

auto light switch on (A.EL displayed) and off (A.EL not displayed).

• The auto light switch on indicator (A.EL) is on the display in all modes while

the auto light switch is turned on.

• The auto light switch turns off automatically whenever battery power drops

to Level 4.

Sea Level

Precautions Concerning Simultaneous Measurement of Altitude and

Temperature

Though you can perform altitude and temperature measurements at the same

time, you should remember that each of these measurements requires

different conditions for best results. With temperature measurement, it is best

to remove the watch from your wrist in order to eliminate the effects of body

heat. In the case of altitude measurement, on the other hand, it is better to

leave the watch on your wrist, because doing so keeps the watch at a

constant temperature, which contributes to more accurate altitude

measurements.

• To give altitude measurement priority, leave the watch on your wrist or in

any other location where the temperature of the watch is kept constant.

• To give temperature measurement priority, remove the watch from your

wrist and allow it to hang freely from your bag or in another location where

it is not exposed to direct sunlight. Note that removing the watch from your

wrist can affect pressure sensor readings momentarily.

• Illumination may not turn on right away if you raise the watch to your face

while a barometric pressure or altitude measurement operation is in

progress.

Questions & Answers

Question: What causes incorrect direction readings?

Answer:

• Incorrect bidirectional calibration. Perform bidirectional calibration.

• Nearby source of strong magnetism, such as a household appliance, a

large steel bridge, a steel beam, overhead wires, etc., or an attempt to

perform direction measurement on a train, boat, etc. Move away from large

metal objects and try again. Note that digital compass operation cannot be

performed inside a train, boat, etc.

Question: What causes different direction readings to produce different

results at the same location ?

Answer: Magnetism generated by nearby high-tension wires is interfering with

detection of terrestrial magnetism. Move away from the high-tension

wires and try again.

Power Supply

This watch is equipped with a solar cell and a special rechargeable battery

(secondary battery) that is charged by the electrical power produced by the

solar cell. The illustration shown below shows how you should position the

watch for charging.

Question: Why am I having problems taking direction readings indoors ?

Answer: A TV, personal computer, speakers, or some other object is

interfering with terrestrial magnetism readings. Move away from the

object causing the interference or take the direction reading

outdoors. Indoor direction readings are particularly difficult inside

ferro-concrete structures. Remember that you will not be able to take

direction readings inside of trains, airplanes, etc.

Solar cell

Example: Orient the watch so its face is

pointing at a light source.

• The illustration shows how to position a

watch with a resin band.

• Note that charging efficiency drops when

any part of the solar cell is blocked by

clothing, etc.

Question: How can the barometer be used to predict weather?

Answer: Barometric pressure indicates changes in the atmosphere, and by

monitoring these changes you can predict the weather with

reasonable accuracy. Rising atmospheric pressure indicates good

weather, while falling pressure indicates deteriorating weather

conditions.

• You should try to keep the watch outside

of your sleeve as much as possible.

Charging is reduced significantly if the

face is covered only partially.

Important!

• Storing the watch for long periods in an area where there is no light or

wearing it in such a way that it is blocked from exposure to light can cause

rechargeable battery power to run down. Be sure that the watch is exposed

to bright light whenever possible.

The barometric pressures that you see in the newspaper and on the

TV weather report are measurements corrected to values measured

at 0 m sea level.

Question: How does the altimeter work?

• This watch uses a special rechargeable battery to store power produced by

the solar cell, so regular battery replacement is not required. However, after

very long use, the rechargeable battery may lose its ability to achieve a full

charge. If you experience problems getting the special rechargeable battery

to charge fully, contact your dealer or CASIO distributor about having it

replaced.

Answer: Generally, air pressure and temperature decrease as altitude

increases.This watch bases its altitude measurements on

International Standard Atmosphere (ISA) values stipulated by the

International Civil Aviation Organization (ICAO). These values define

relationships between altitude, air pressure, and temperature.

• Never try to remove or replace the watch’s special battery yourself. Use of

the wrong type of battery can damage the watch.

Altitude

Air Pressure

Temperature

• All data stored in memory is deleted, and the current time and all other

settings return to their initial factory defaults whenever battery power drops

to Level 5 and when you have the battery replaced.

• The Home City setting reverts to the initial default of ^TYO(Tokyo)

whenever the battery power level drops to Level 5 or when you have the

rechargeable battery replaced. If this happens, change the Home City to

the setting you want.

616 hPa

701 hPa

795 hPa

899 hPa

1013 hPa

–11°C

About 8 hPa per 100 m

About 9 hPa per 100 m

4000 m

3500 m

2500 m

1500 m

500 m

–4.5°C

3000 m

2000 m

About 6.5°C

per 1000 m

2°C

8.5°C

15°C

About 10 hPa per 100 m

About 11 hPa per 100 m

1000 m

0 m

About 12 hPa per 100 m

• Turn on the watch’s Power Saving function and keep it in an area normally

exposed to bright light when storing it for long periods. This helps to keep

the rechargeable battery from going dead.

14000 ft

12000 ft

10000 ft

8000 ft

19.03 inHg

22.23 inHg

25.84 inHg

29.92 inHg

16.2°F

30.5°F

44.7°F

59.0°F

About 0.15 inHg per 200 ft

About 0.17 inHg per 200 ft

About 0.192 inHg per 200 ft

About 3.6°F

per 1000 ft

6000 ft

2000 ft

4000 ft

0 ft

About 0.21 inHg per 200 ft

Source: International Civil Aviation Organization

• Note that the following conditions will prevent you from obtaining accurate

altitude readings:

When air pressure changes because of changes in the weather

Extreme temperature changes

When the watch itself is subjected to strong impact

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Operation Guide 3135 3206

Recovery Times

Battery Power Indicators

The table below shows the amount exposure that is required to take the

battery from one level to the next.

The battery power indicator on the display shows you the current status of the

rechargeable battery’s power.

Approximate Exposure Time

Exposure Level

(Brightness)

Level Battery Power

Indicator

Function Status

Level 5 Level 4 Level 3

Level 2

Level 1

4 hours

19 hours

38 hours

All functions enabled.

Outdoor Sunlight

(50,000 lux)

1 hour

4 hours

6 hours

14 hours

68 hours

137 hours

Illumination, beeper, and

sensor operation disabled.

Sunlight Through a

Window (10,000 lux)

Battery power

indicator

l ^l

Daylight Through a

Window on a Cloudy

Day (5,000 lux)

(Charge Soon Alert)

Except for timekeeping and

the C (charge) indicator, all

functions and display

Indoor Fluorescent

Lighting (500 lux)

61 hours

- - - - - - - - - - - - - - - -

l ^l

(Charge Soon Alert) indicators disabled.

• The above exposure time values are all for reference only. Actual required

All functions disabled.

exposure times depend on lighting conditions.

• The flashing LOW indicator at Level 3 tells you that battery power is very

low, and that exposure to bright light for charging is required as soon as

possible.

Reference

• At Level 5, all functions are disabled and settings return to their initial

factory defaults. Once the battery reaches Level 2 (indicated by M indicator)

after falling to Level 5, reconfigure the current time, date, and other

settings.

This section contains more detailed and technical information about watch

operation. It also contains important precautions and notes about the various

features and functions of this watch.

• Display indicators reappear as soon as the battery is charged from Level 5

Moon Phases and Moon Age

to Level 2.

The Moon goes through a regular 29.53-day cycle. During each cycle, the

Moon appears to wax and wane as the relative positioning of the Earth,

Moon, and Sun changes. The greater the angular distance between the Moon

and the Sun,* the more we see illuminated.

• Leaving the watch exposed to direct sunlight or some other very strong light

source can cause the battery power indicator to show a reading temporarily

that is higher than the actual battery level. The correct battery level should

be indicated after a few minutes.

* The angle to the Moon in relation to the direction at which the Sun is visible

from the Earth.

This watch performs a rough calculation of the current Moon age starting

from day 0 of the moon age cycle. Since this watch performs calculations

using integer values only (no fractions), the margin for error of the displayed

Moon age is 1 day.

• Performing multiple sensor, illumination, or

beeper operations during a short period may

cause all of the battery indicators (L, M, H) to

flash on the display. Illumination, alarm,

countdown timer alarm, hourly time signal, and

Moon Phase Indicator

sensor operations will be disabled until battery

power recovers.

After some time, battery power will recover and

battery indicators (L, M, H) will disappear,

indicating that the above functions are enabled

again.

The Moon phase indicator of this watch indicates

the current phase of the Moon as shown below. It

Moon Phase indicator

is based on the view of the left side of the moon

at meridian transit from the northern hemisphere

of the Earth. If the appearance of the Moon

phase indicator is reversed from the actual Moon

as viewed from your location, you can use the

procedure under “To reverse the displayed Moon

phase” to change the indicator.

• Even if battery power is at Level 1 or Level 2, the Digital Compass Mode,

Barometer/Thermometer Mode, or Altimeter Mode sensor may be disabled

if there is not enough voltage available to power it sufficiently. This is

indicated by battery indicators (L, M, H) on the display.

• If battery indicators (L, M, H) appears frequently, it probably means that

remaining battery power is low. Leave the watch in bright light to allow it to

charge.

(part you cannot see)

Charging Precautions

Certain charging conditions can cause the watch to become very hot. Avoid

leaving the watch in the areas described below whenever charging its

rechargeable battery. Also note that allowing the watch to become very hot

can cause its liquid crystal display to black out. The appearance of the LCD

should become normal again when the watch returns to a lower temperature.

Moon phase

(part you can see)

Module 3135

Module 3206

Module

Warning!

Moon

Phase

Indicator

3135

Leaving the watch in bright light to charge its rechargeable battery can

cause it to become quite hot.Take care when handling the watch to

avoid burn injury.The watch can become particularly hot when exposed

to the following conditions for long periods.

• On the dashboard of a car parked in direct sunlight

• Too close to an incandescent lamp

Module

3206

^28.7-29.51.0-2.7 2.8-4.6 4.7-6.4 6.5-8.3 8.4-10.1 10.2-12.0 12.1-13.8

0.0-0.9

Moon Age

• Under direct sunlight

Moon Phase

New Moon

First Quarter (Waxing)

Charging Guide

Module

After a full charge, timekeeping remains enabled for up to about five months.

• The following table shows the amount of time the watch needs to be

exposed to light each day in order to generate enough power for normal

daily operations.

Moon

Phase

Indicator

3135

Module

3206

Exposure Level (Brightness)

Approximate

Exposure Time

Moon Age

13.9-15.7 15.8-17.5 17.6-19.4 19.5-21.2 21.3-23.1 23.2-24.9 25.0-26.8 26.9-28.6

Outdoor Sunlight (50,000 lux)

5 minutes

Moon Phase

Full Moon

Last Quarter (Waning)

Sunlight Through a Window (10,000 lux)

24 minutes

Daylight Through a Window on a Cloudy Day (5,000 lux) 48 minutes

Indoor Fluorescent Lighting (500 lux)

Tidal Movements

Tides are the periodic rise and fall of the water of oceans, seas, bays, and

other bodies of water caused mainly by the gravitational interactions between

the Earth, Moon and Sun. Tides rise and fall about every six hours. The Tide

Graph of this watch indicates tidal movement based on the Moon’s transit

over a meridian and the lunitidal interval. The Tide Graph calculates and

graphically represents current tide conditions in your Home City or a port city

in the vicinity of the Home City based on longitudes, lunar day length, and

lunitidal interval preset in watch memory, and on high tide times specified by

you.

8 hours

• For details about the battery operating time and daily operating conditions,

see the “Power Supply” section of the Specifications.

• Stable operation is promoted by frequent exposure to light.

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Operation Guide 3135 3206

Tide Graph

Button Operation Tone

The Tide Graph graphically represents the current tide condition using one of

three patterns that represent spring tide, intermediate tide, and neap tide, as

shown below.

The button operation tone sounds any time you

press one of the watch’s buttons.You can turn the

button operation tone on or off as desired.

• Even if you turn off the button operation tone,

the alarm, Hourly Time Signal, and Countdown

Timer Mode alarm all operate normally.

Mute indicator

Tide Name

Spring Tide

Graph

Description

Large difference between

high tide and low tide. Occurs

a few days before and after a

New Moon and Full Moon.

To turn the button operation tone on and off

In any mode (except when a setting screen is on

the display), hold down Dto toggle the button

operation tone on ( not displayed) and off (

displayed).

Intermediate Tide

Neap Tide

Medium difference between

high tide and low tide.

Small difference between

high tide and low tide. Occurs

a few days before and after

the first quarter and last

quarter of a half moon.

• Since the Dbutton also is the mode change button, holding it down to turn

the button operation on or off also causes the watch’s current mode to

change.

• The indicator is displayed in all modes when the button operation tone is

turned off.

•

The Tide Graph flashes as shown below to indicate the tide range.

Power Saving

When turned on, Power Saving enters a sleep

state automatically whenever the watch is left for

a certain period in an area where it is dark. The

table below shows how watch functions are

affected by Power Saving.

• There actually are two sleep state levels:

“display sleep” and “function sleep”.

High tide

Low tide

High tide

The segments on either end of the Tide Graph flash during high tide.

Elapsed Time in

Dark

Display

Operation

Lunitidal Interval

Theoretically, high tide is at the Moon’s transit over the meridian and low tide

is about six hours later. Actual high tide occurs somewhat later, due to factors

such as viscosity, friction, and underwater topography. Both the time

differential between the Moon’s transit over the meridian until high tide and

the time differential between the Moon’s transit over the meridian until low tide

are known as the “lunitidal interval”.

60 to 70 minutes

(Display Sleep)

6 or 7 days

(Function Sleep)

Blank, with

Display is off, but all functions are

enabled.

PS flashing

Blank, with

All functions are disabled, but

timekeeping is maintained.

flashing

PS not

• Wearing the watch inside the sleeve of clothing can cause it to enter the

sleep state.

Auto Return Features

• The watch will not enter the sleep state while the digital time is between

6:00 AM and 9:59 PM. If the watch is already in the sleep state when the

digital time reaches 6:00 AM, however, it will remain in the sleep state.

• The watch will not enter the sleep state while it is in the Digital Compass,

Barometer/Thermometer, Altimeter, Countdown Timer, or Stopwatch Mode.

When the watch is left in any mode besides the Countdown Timer and

Stopwatch Mode, it will return to the Timekeeping Mode automatically after

a specific amount of time. Then if left in the dark for the elapsed time

indicated in the table above, the watch will enter the sleep state.

• The watch returns to the Timekeeping Mode automatically if you do not

perform any button operation for two or three minutes in the Tide/Moon

Data, Alarm, Data Recall, Digital Compass, or Barometer/Thermometer

Mode.

• If you do not perform any button operation while in the Altimeter Mode, the

watch returns to the Timekeeping Mode automatically after nine or 10

hours.

• If you leave a screen with flashing digits on the display for two or three

minutes without performing any operation, the watch exits the setting

screen automatically.

To recover from the sleep state

Perform any one of the following operations.

• Move the watch to a well-lit area. It can take up to two seconds for the

display to turn on.

• Press any button.

• Angle the watch towards your face for reading.

Initial Screens

When you enter the World Time or Alarm Mode, the data you were viewing

when you last exited the mode appears first.

Scrolling

The Aand Cbuttons 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.

To turn Power Saving on and off

1. In the Timekeeping Mode, hold down Euntil

the city code starts to flash, which indicates

the setting screen.

2. Press Dnine times until the Power Saving

on/off screen appears.

3. Press Ato toggle Power Saving on (ON) and

off (OFF).

Sensor Malfunction Indicator

Subjecting the watch to strong impact can cause sensor malfunction or

improper contact of internal circuitry. When this happens,

appear on the display and sensor operations will be disabled.

• If ERR appears while a measurement operation is being performed in a

sensor mode, restart the measurement. If ^ERRappears on the display

again, it can mean there is something wrong with the sensor.

• Even if battery power is at Level 1 or Level 2, the Digital Compass Mode,

Barometer/Thermometer Mode, or Altimeter Mode sensor may be disabled

if there is not enough voltage available to power it sufficiently. In this case,

ERR will appear on the display. This does not indicate malfunction, and

sensor operation should resume once battery voltage returns to its normal

level.

ERR

(error) will

4. Press E to exit the setting screen.

• The Power Saving on indicator (PS) is on the

display in all modes while Power Saving is

turned on.

Power Saving on

indicator

Timekeeping

• Resetting the seconds to

while the current count is in the range of 30 to

59 causes the minutes to be increased by 1. In the range of 00 to 29, the

seconds are reset to

without changing the minutes.

• If ^ERRkeeps appearing during measurement, it could mean there is a

problem with the applicable sensor.

• With the 12-hour format, the P (PM) indicator appears on the display for

times in the range of noon to 11:59 p.m. and no indicator appears for times

in the range of midnight to 11:59 a.m.

Whenever you have a sensor malfunction, be sure to take the watch to

your original dealer or nearest authorized CASIO distributor as soon as

possible.

• With the 24-hour format, times are displayed in the range of 0:00 to 23:59,

without any indicator.

• The 12-hour/24-hour timekeeping format you select in the Timekeeping

Mode is applied in all modes.

• The watch’s built-in full automatic calendar makes allowances for different

month lengths and leap years. Once you set the date, there should be no

reason to change it except when battery power drops to Level 5.

• The times for the Timekeeping Mode and all the city codes of the World

Time Mode are calculated in accordance with each city’s UTC offset.

• The UTC offset is a value that indicates the time difference between a

reference point in Greenwich, England and the time zone where a city is

located.

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Operation Guide 3135 3206

• The letters “UTC” is the abbreviation for “Universal Time Coordinated”,

To calibrate the pressure sensor and the temperature sensor

which is the world-wide scientific standard of timekeeping. It is based upon

carefully maintained atomic (cesium) clocks that keep time accurately to

within microseconds. Leap seconds are added or subtracted as necessary

to keep UTC in sync with the Earth’s rotation.

1. Press Bto enter the Barometer/

Thermometer Mode.

2. In the Barometer/Thermometer Mode, hold

down Efor about two seconds until either

OFF or the reference temperature value starts

to flash. This is the setting screen.

• If you want to calibrate the barometric

pressure sensor, press Dto move the

flashing to the middle display area. This is

the pressure sensor calibration screen.

• At this time, OFF or the barometric pressure

Illumination Precautions

• The electro-luminescent panel that provides illumination loses power after

very long use.

• Illumination may be hard to see when viewed under direct sunlight.

• Illumination turns off automatically whenever an alarm sounds.

• The watch may emit an audible sound whenever the display is illuminated.

This is due to vibration of the EL panel used for illumination, and does not

indicate malfunction.

value should be flashing on the display.

3. Use A(+) and C(–) to set the calibration

value in the units shown below.

• Frequent use of illumination runs down the battery.

Temperature

Barometric Pressure

0.1°C (0.2°F)

1 hPa (0.05 inHg)

Auto light switch precautions

• The auto light switch is turned off automatically whenever battery power is

• “OFF” is displayed while the reference

temperature value and barometric pressure

value are zero (0).

at Level 4.

• Wearing the watch on the inside of your wrist, movement of your arm, or

vibration of your arm can cause frequent activation of the auto light switch

and illumination of the display. To avoid running down the battery, turn off

the auto light switch whenever engaging in activities that might cause

frequent illumination of the display.

• Pressing Aand Cat the same time returns to the factory calibration

(OFF).

4. Press Eto return to the Barometer/Thermometer Mode screen.

• Note that wearing the watch under your sleeve while the auto light switch is

turned on can cause frequent illumination of the display and can run down

the battery.

To select the temperature, barometric pressure, and altitude units

1. Enter the Timekeeping Mode.

2. Hold down Euntil the city code starts to

flash, which indicates the setting screen.

3. Use Dto select the setting screen for the unit

you want to change.

• See step 3 under “To set the time and date”

for information about how to scroll through

setting screens.

• Illumination may not turn on if the face of the

watch is more than 15 degrees above or below

parallel. Make sure that the back of your hand

is parallel to the ground.

• Illumination turns off in about one second, even

if you keep the watch pointed towards your

face.

More than 15 degrees

too high

4. Press Ato change the unit setting.

• Each press of Achanges the selected unit setting as shown below.

• Static electricity or magnetic force can interfere with proper operation of the

auto light switch. If illumination does not turn on, try moving the watch back

to the starting position (parallel with the ground) and then tilt it back towards

your face again. If this does not work, drop your arm all the way down so it

hangs at your side, and then bring it back up again.

• Under certain conditions, illumination does not turn on until about one

second after you turn the face of the watch towards you. This does not

necessarily indicate malfunction.

Temperature

Altitude

Barometric Pressure

°C and °F

m and ft

hPa and inHg

5. After the settings are the way you want, press Eto exit the setting screen.

Specifications

Accuracy at normal temperature: 20 seconds a month

Timekeeping: Hour, minute, second, p.m. (P), month, day, day of the week

Time format: 12-hour and 24-hour

• You may notice a very faint clicking sound coming from the watch when it is

shaken back and forth. This sound is caused by mechanical operation of

the auto light switch, and does not indicate a problem with the watch.

Barometer and Thermometer Precautions

Calendar system: Full Auto-calendar pre-programmed from the year

2000 to 2099

Other: 2 display formats (Day of the Week, Barometric Pressure Graph);

Home City code (can be assigned one of 33 city codes); Standard

Time / Daylight Saving Time (summer time)

• The pressure sensor built into this watch measures changes in air

pressure, which you can then apply to your own weather predictions. It is

not intended for use as a precision instrument in official weather prediction

or reporting applications.

• Sudden temperature changes can affect pressure sensor readings.

• Temperature measurements are affected by your body temperature (while

you are wearing the watch), direct sunlight, and moisture. To achieve a

more accurate temperature measurement, remove the watch from your

wrist, place it in a well ventilated location out of direct sunlight, and wipe all

moisture from the case. It takes approximately 20 to 30 minutes for the

case of the watch to reach the actual surrounding temperature.

Digital Compass: 20 seconds continuous measurement; 16 directions;

Angle value 0° to 359°; Four direction pointers; Calibration

(bidirectional, northerly); Magnetic declination correction

Barometer:

Measurement and display range:

260 to 1,100 hPa (or 7.65 to 32.45 inHg)

Display unit: 1 hPa (or 0.05 inHg)

Measurement timing: Daily from midnight, at two hour intervals (12 times

per day); Every five seconds in the Barometer/Thermometer Mode

Other: Calibration; Manual measurement (button operation); Barometric

pressure graph

Pressure Sensor and Temperature Sensor Calibration

The pressure sensor and temperature sensor built into the watch are

calibrated at the factory and normally require no further adjustment. If you

notice serious errors in the pressure readings and temperature readings

produced by the watch, you can calibrate the sensor to correct the errors.

Thermometer:

Measurement and display range: –10.0 to 60.0°C (or 14.0 to 140.0°F)

Important!

Display unit: 0.1°C (or 0.2°F)

• Incorrectly calibrating the barometric pressure sensor can result in incorrect

readings. Before performing the calibration procedure, compare the

readings produced by the watch with those of another reliable and accurate

barometer.

Measurement timing: Every five seconds in the Barometer/Thermometer

Mode

Other: Calibration; Manual measurement (button operation)

Altimeter:

• Incorrectly calibrating the temperature sensor can result in incorrect

readings. Carefully read the following before doing anything.

Compare the readings produced by the watch with those of another

reliable and accurate thermometer.

Measurement range: –700 to 10,000 m (or –2,300 to 32,800 ft.) without

reference altitude

Display range: –10,000 to 10,000 m (or –32,800 to 32,800 ft.)

Negative values can be caused by readings produced based on a

reference altitude or due to atmospheric conditions.

Display unit: 5 m (or 20 ft.)

If adjustment is required, remove the watch from your wrist and wait for 20

or 30 minutes to give the temperature of the watch time to stabilize.

Current Altitude Data: 5-second interval for first 3 minutes followed by 2-

minute interval for next 9 or 10 hours

Altitude Memory Data: 24 altitude records and one high altitude record

Altitude records: Pressing a button records the current altitude value,

along with the date (month-day) of the reading.

High altitude record: Automatically records the highest altitude value

measured in the Altimeter Mode to date, along with the date (month-

day) of the reading.

Other: Reference altitude setting; Altitude graph

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Operation Guide 3135 3206

City Code Table

Bearing Sensor Precision:

City

Code

UTC Offset/

GMT Differential

City

UTC Offset/

Direction: Within 10°

City

Code

GMT Differential

Values are guaranteed for a temperature range of –10°C to 40°C (14°F

to 104°F).

PPG

HNL

ANC

LAX

DEN

CHI

Pago Pago

Honolulu

Anchorage

Los Angeles

Denver

–11

–10

–9

–8

–7

–6

–5

–4

–3

JED

THR

DXB

KBL

KHI

DEL

DAC

RGN

BKK

HKG

SEL

TYO

ADL

SYD

NOU

WLG

Jeddah

Tehran

Dubai

Kabul

Karachi

Delhi

+3.5

+4.5

+5.5

+6.5

North pointer: Within 2 digital segments

Pressure Sensor Precision:

Conditions

Chicago

Altimeter

Barometer

NYC

New York

Dhaka

(Altitude)

CCS*

Caracas

Yangon

Bangkok

Hong Kong

Seoul

Fixed

tempera-

0 to 6000 m

0 to 19680 ft.

(altitude differential × 3%

+ 30 m) m

(altitude differential × 3%

+ 100 ft.) ft.

(pressure differential × 3%

+ 3 hPa) hPa

(pressure differential × 3%

+ 0.0885 inHg) inHg

RIO Rio De Janeiro

Fernando de

–2

FEN

ture

Noronha

RAI

UTC

LON

PAR

BER

ATH

CAI

Praia

–1

–

Tokyo

6000 to 10000 m

19680 to 32800 ft. + 45 m) m

(altitude differential × 3%

Adelaide

Sydney

Noumea

Wellington

+9.5

+10

+11

London

Paris

Berlin

Athens

Cairo

(altitude differential × 3%

+ 150 ft.) ft.

+12

Effect of

variable

tempera-

ture

0 to 6000 m

0 to 19680 ft.

80 m every 10°C

264 ft. every 50°F

120 m every 10°C

396 ft. every 50°F

6 hPa every 10°C

0.177 inHg every 50°F

JRS

Jerusalem

6000 to 10000 m

19680 to 32800 ft.

• Based on data as of December 2008.

• The rules governing global times (GMT differential and UTC offset) and

• Values are guaranteed for a temperature range of –10°C to 40°C (14°F to

104°F).

• Precision is lessened by strong impact to either the watch or the sensor,

and by temperature extremes.

summer time are determined by each individual country.

* In December 2007, Venezuela changed its offset from –4.0 to –4.5. Note

however, that this watch displays an offset of –4.0 (the old offset) for the

CCS (Caracas, Venezuela) city code.

Temperature Sensor Precision:

2°C ( 3.6°F) in range of –10°C to 60°C (14.0°F to 140.0°F)

Tide/Moon Data:

Moon phase indicator for specific date; Tide level for specific date and time

Other: High tide time adjustment; Moon phase reversal

Countdown Timer:

Measuring unit: 1 second

Countdown range: 60 minutes

Setting ranges: Countdown start time (1 to 60 minutes, 1-minute increments);

Reset time (1 to 5 minutes, 1-minute increments)

Other: Progress beeper

Stopwatch:

Measuring unit: 1/100 second

Measuring capacity: 23:59' 59.99''

Measuring modes: Elapsed time, split time, two finishes

Alarms: 5 Daily alarms; Hourly time signal

WorldTime: 33 cities (29 time zones)

Other: Daylight Saving Time/Standard Time

Illumination: EL Backlight (electro-luminescent panel); Auto Light Switch

(Full Auto EL Light operates only in the dark)

Other: Battery power indicator; Power Saving; Low-temperature resistance

(–10°C/14°F); Button operation tone on/off

Power Supply: Solar cell and one rechargeable battery

Approximate battery operating time: 5 months (from full charge to

Level 4) under the following conditions:

• Watch not exposed to light

• Internal timekeeping

• Display on 18 hours per day, sleep state 6 hours per day

• 1 illumination operation (1.5 seconds) per day

• 10 seconds of alarm operation per day

• 10 digital compass operations per week

•

10 hours of altimeter measurement at 2-minutes interval, once per month

• 2 hours of barometric pressure measurement per day

Frequent use of illumination runs down the battery. Particular care is

required when using the auto light switch.

20 months when the watch is left in the sleep state (display off) after a

full charge.

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