CASIO PRG60-1A - Owner's Manual Immediate Download

Operation Guide 2767

MO0307-EB

Getting Acquainted

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

of your purchase, be sure to carefully read this manual and keep it on hand

for later reference when necessary.

Expose the watch to bright light to charge its battery before using it.

You can use this watch even as its battery is being charged by exposure to

bright light.

· Be sure to read "Battery" of this manual for important

information you need to know when exposing the watch to bright

light.

Applications

The built-in sensors of this watch measure direction, altitude, barometric

pressure, and temperature. 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.

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.

· 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.

· CASIO COMPUTER CO., LTD. assumes no responsibility for any loss,

or any claims by third parties that may arise through the use of this

watch.

If the digital display of the watch is blank...

If the SLEEP indicator is on the display (either

flashing or steady), it means that the display is

blank because the watch's Power Saving function

has turned off the display to conserve power.

Power Saving automatically turns off the display

and enters a sleep state whenever the watch is

left for a certain period where it is dark.

· The initial factory default setting is Power Saving on.

· The watch recovers from the sleep state if you move it to a well-lit area*, if

you press any button, or if you angle the watch towards your face for

reading.

*It can take up to two seconds for the display to turn on.

· See "Power Saving Function" for more information.

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About This Manual

· Button operations are indicated using the

letters shown in the illustration.

· 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.

· Most of the display examples in this manual

show only the digital display, without the analog

hands, as shown in the lower illustration.

(Light)

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Digital Compass Mode

Press C.

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Barometer/

Thermometer Mode

Press B.

· From the Timekeeping Mode or another sensor mode, you can use buttons

B, C, or E to directly enter the mode assigned to it. From any other

mode, you must go to the Timekeeping Mode first.

General Guide

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

between modes.

· In any mode, press L to illuminate the display.

Press D.

Data Recall Mode

Alarm Mode

Sensor Modes

Timekeeping Mode

L D

Altimeter Mode

Press D.

Press E.

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Stopwatch Mode

Hand Setting Mode

Hold down

Timekeeping

This watch features separate digital and analog

timekeeping. The procedures for setting the

digital time and analog time are different.

· Whenever you need to adjust both the digital

and the analog time settings, make sure you

adjust the digital setting first.

Digital Time and Date

Use the Timekeeping Mode to set and view a

digital display of the current time and date. When

setting the digital time, you can also configure

settings for the 12/24-hour format and the Power

Saving function.

Hour : Minutes

PM indicator

Seconds

Month Day

Day of week

Year

Seconds

Hour

Minutes

Day

Month

12/24-Hour

Format

Power Saving

on/off

Day of

week

To set the digital time and date

1. In the Timekeeping Mode, hold down A until the seconds start to flash,

which indicates the setting screen.

2. Press D to move the flashing in the sequence shown below to select other

settings.

4. Press A to exit the setting screen.

· Resetting the seconds only (without changing the hour or minute setting)

causes the analog minute hand setting to be adjusted automatically.

· See "Power Saving Function" for details about configuring Power Saving

settings.

Setting

Seconds

Hour, Minutes

12/24-Hour

format

Year, Month,

Day

Day of week

Power Saving

on/off

Button Operations

Press E to reset the seconds to

00.

Use E (+) to change the setting.

Use E to toggle between 12-hour (

12H)

and 24-hour (

24H) timekeeping.

Use E (+) to change the setting.

Press E to toggle Power Saving on (

ON)

and off (

OFF).

Screen

3. When the setting you want to change is flashing, use E to change it as

described below.

Operation Guide 2767

Note

· Resetting the seconds to 00 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

00 without changing the minutes.

· 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.

· 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 year can be set in the range of 2000 to 2039.

· The watch's built-in full automatic calendar automatically 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

Setting the Analog Time

Perform the procedure below when the time indicated by the analog hands

does not match the time of the digital display.

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Digital Compass

A built-in bearing sensor detects magnetic north. The watch uses this data to

display an angle value and four pointers indicating north, south, east, and

west. Direction readings are performed in the Digital Compass Mode.

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

incorrect.

To enter and exit the Digital Compass Mode

1. While in the Timekeeping, Barometer/Thermometer, or Altimeter Mode,

press C to enter the Digital Compass Mode.

· At this time, the watch immediately starts a Digital Compass operation.

After the first reading is obtained, the watch continues to take direction

readings automatically each second, for up to 20 seconds.

2. Press D to return to the Timekeeping Mode.

To take a direction reading

1. Enter the Digital Compass Mode.

2. Place the watch on a flat surface or (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 you want to measure.

4. Press C to start a Digital Compass

measurement operation.

· After direction measurement is complete, an

angle value appears on the display. The angle

value indicates the clockwise angle formed

between magnetic north (which is 0 degrees)

and the direction that the 12 o'clock position of

the watch is pointing.

· Also, four pointers appear to indicate magnetic

north, south, east, and west.

· After the first reading is obtained, the watch

continues to take direction readings

automatically each second, for up to 20

seconds.

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Angle value (in degrees)

Magnetic north pointer

12 o'clock

position

WNW

WSW

SSW

SSE

ESE

ENE

NNE

NNW

Note

· Note that taking a measurement

while the watch is not horizontal

(in relation to the horizon) can

result in large measurement

error.

· Any ongoing direction measurement operation is temporarily paused while

the watch is performing an alert operation (alarm or hourly time signal) or

while the watch's backlight is turned on (by pressing L). The measurement

operation resumes for its remaining duration after the operation that caused

the pause is finished.

· See "Digital Compass Precautions" for other important information about

taking direction readings.

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 temperature sensor and the pressure sensor if you

suspect that readings are incorrect.

To take barometric pressure and temperature readings

Pressing B in the the Timekeeping Mode or in any of the other sensor

modes enters the Barometer/Thermometer Mode and automatically starts

taking barometric pressure and temperature measurements.

llllllll

Press B to

toggle between

screens.

History Graph and

Barometric Pressure

History graph

Temperature

Barometric

pressure

Temperature and

Barometric Pressure

· 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).

· The displayed barometric pressure value changes toxxxx hPa (or inHg) if

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 be

displayed again as soon as the measured barometric pressure is within the

allowable range.

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

· The displayed temperature value changes to xx. x °C (or °F) if a

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 be displayed again as soon as the

measured temperature is within the allowable range.

· Some countries refer to the barometric pressure unit hecto-pascal (hPa) as

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

· See "Barometer and Thermometer Precautions" for important precautions.

Barometric Pressure History Graph

Barometric pressure indicates changes in the atmosphere. By monitoring

these changes you can predict the weather with reasonable accuracy.

The barometric pressure history graph contains points that show you the

changes in barometric pressure readings taken by the watch for up to the last

18 hours. The time line along the bottom of the graph runs from left to right,

which means that the rightmost point on the graph is the latest reading. The

relative positions of the points on the graph indicate whether barometric

pressure is rising, falling, or holding relatively steady.

· Though you can configure the watch to display barometric pressure in units

of hPa or inHg, the history graph always uses hPa. This means that the

points plotted on the history graph are based on

±3hPa changes in

barometric pressure.

· No point is plotted on the graph whenever a measurement operation fails

due to sensor malfunction, low battery power, or any other reason.

Relatively steady (within

±3hPa)

Rising (rise greater than 3hPa)

Falling (fall greater than 3hPa)

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

pressure history graph.

A rising graph generally means improving weather.

A falling graph generally means deteriorating weather.

To adjust the analog time

1. In the Timekeeping Mode, press D four times

to enter the Hand Setting Mode.

2. Hold down A until the current digital time

starts to flash, which indicates the analog time

setting screen.

3. Press E to advance the analog time setting by

20 seconds.

· Holding down E advances the analog time setting at high speed.

· If you need to advance the analog time setting a long way, hold down

E until the time starts advancing at high speed, and then press B.

This locks the high-speed hand movement, so you can release the two

buttons. High-speed hand movement continues until you press any

button. It will also stop automatically after the time advances 12 hours

or if an alarm starts to sound.

4. Press A to exit the setting screen.

· To return to the Timekeeping Mode, press D.

· During measurement the watch displays an angle value and four direction

pointers of the first reading, which change dynamically when the watch is

moved. After measurement is complete, the angle value and four direction

pointers are frozen in accordance with the last measurement.

· The indicator flashes on the display while a measurement is in progress.

Operation Guide 2767

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 for the first three minutes.

· The indicator to the left of "BAROMETER" on the display flashes while a

measurement is in progress.

· The barometer automatically takes measurements every three hours

(starting from midnight), regardless of what mode you are in. The results of

these measurements are used for plotting points on the barometric

pressure history graph.

· You can also perform a barometric pressure and temperature measurement

at any time by pressing B in the Barometer/Thermometer Mode.

Barometer and Thermometer Precautions

· 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 off

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

case of the watch to reach the actual surrounding temperature.

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

unit for the measured barometric pressure. See "Changing the Barometric

Pressure and Temperature Units" for details.

· You can select either Celsius (°C) or Fahrenheit (°F) as the display unit for

the measured temperature value. See "Changing the Barometric Pressure

and Temperature Units" for details.

Altimeter

A built-in altimeter uses a pressure sensor to detect the current air pressure,

which is then used to estimate the current altitude. The watch is pre-

programmed with ISA (International Standard Atmosphere) preset values,

which are used to convert air pressure readings to altitude values. If you

preset a reference altitude, the watch will also calculate the current relative

altitude based on your preset value. Memory is also provided for the storage

of altimeter data.

Important!

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

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

· This watch employs a semiconductor pressure sensor, which is affected by

temperature changes. Make sure that the watch is not being exposed to

temperature changes while you are taking altitude measurements.

· To avoid the effect of sudden temperature changes on measurement, wear

the watch so it is in direct contact with your wrist during measurement.

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

operations while engaging in sports where there are sudden altitude

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

gyrocopter, glider, or any other aircraft.

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

professional or industrial level precision.

· 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 by the flight crew.

How the Altimeter Works

With the Preset Values (No Reference Altitude)

· The watch measures the air pressure at your current location and uses the

built-in ISA values to convert it to the equivalent altitude.

With a Reference Altitude

· If you set a reference altitude, the watch

uses that value when calculating altitude

based on air pressure.

· To determine the height of a tall building,

set the reference altitude to 0 on the

ground floor. Note, however, that you may

not be able to get a good reading if the

building is pressurized or air-conditioned.

· When mountain climbing, you can set the

reference value in accordance with a

marker along the way or altitude

information from a map. After you do this,

the altitude readings produced by the

watch will be more accurate than they

would without a reference altitude.

400

To take an altitude reading

Pressing E in the Timekeeping Mode or in any

of the other sensor modes enters the Altimeter

Mode and automatically starts altitude

measurement.

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

altitude reading to appear after you enter the

Altimeter Mode.

· The Altimeter Mode screen also displays the

current temperature. See "Barometer/

Thermometer" for more information.

· During the first three minutes after entering the

Altimeter Mode, the

indicator flashes on the

display and measurements are taken every five

seconds. After that, the

indicator stops

flashing and remains on the display as

measurements are taken every two minutes.

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Altitude

Temperature

Setting a Reference Altitude

After you set 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 A for about

two seconds until the watch beeps and the

display goes blank. About four or five seconds

after that, OFF or the current reference

altitude value (if set) will flash on the display.

· If OFF or the current reference altitude

value does not appear at this time, press A

to return to the Altimeter Mode screen, and

perform step 1 again.

2. Press E (+) or B () to change the current

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

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Altitude Records

Storing altitude data in memory creates an altitude record. If a reading is

greater than all of the other altitude readings currently stored in memory, it is

stored in the maximum altitude record. The following describes the contents

of each type of record.

Recording date (year, month, day), time, and altitude: Up to 41 records

Maximum altitude (including recording date and time): 1 record

· The maximum altitude record shows information about the altitude record

that has the greatest altitude value. The maximum altitude record is

updated any time a reading produces an altitude that is greater than that of

the current maximum altitude record.

· Pressing E causes the measurement operation to restart from the

beginning of the cycle described above.

· 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).

· 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 xxxxx 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 unit of measurement for the displayed altitude values

between meters (m) and feet (ft). See "To change the altitude unit".

· You can set the reference altitude within the range of 10,000 to 10,000

meters (32,800 to 32,800 feet).

· Pressing E and B at the same time returns to OFF(no reference

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

based on preset data only.

3. Press A to exit the setting screen.

To store an altitude record in memory

In the Altimeter Mode, hold down E for about

one second until the watch beeps. This indicates

that a record of the altitude reading (date, time,

and altitude) has been stored in memory.

· You can recall data in memory using the Data

Recall Mode.

· Note that there is enough memory to store a

total of 41 records. If there are already 41

records in memory, storing another one

automatically deletes the oldest record to make

room for the new one.

Operation Guide 2767

To view altitude record data

1. Use D to enter the Data Recall Mode.

· The message RECALL appears for about one second, followed by

maximum altitude record.

2. Press E to cycle through the altitude record screens in the sequence

shown below.

· The maximum altitude record appears first. After that, each press of E

scrolls through records in sequence, starting from the oldest record.

· For each record, the lower part of the display alternates at one-second

intervals between the recording time and altitude value.

· If an error occurs while altitude data is being stored in memory or if there is

no altitude data in memory,

xxxx is shown for the measured altitude

value on the corresponding altitude record screen.

Maximum Data

One

second

Alternates at

1-second

intervals.

Press E.

Oldest Data

Newest Data

Altitude

Recording date

(Year, Month Day)

Recording time

(Hour : Minutes)

Data Recall Mode

Deleting the Maximum Altitude Record Data

Use the following procedure when you want to delete the data in the

maximum altitude record. Note that you can delete maximum altitude record

data only. You cannot delete the data of any of the other altitude records.

To delete the maximum altitude record data

1. Use the procedure under "To view altitude record data" to display the

maximum altitude record.

· The maximum altitude record is the one with MAX next to both the time

and altitude values.

2. Hold down A for about two seconds. This will delete the data.

Alarm

After you set (and turn on) the daily alarm, the

alarm tone sounds when the alarm time is

reached. You can also turn on an Hourly Time

Signal that causes the watch to beep twice every

hour on the hour.

· All of the operations in this section are

performed in the Alarm Mode, which you enter

by pressing D.

Alarm time (Hour : Minutes)

Alarm on indicator

Hourly time signal on

indicator

To set the alarm time

1. In the Alarm Mode, hold down A until the

hour setting of the alarm time starts to flash,

which indicates the setting screen.

· This automatically turns on the alarm.

2. Press D to move the flashing between the

hour and minute settings.

3. While a setting is flashing, use E to increase

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).

4. Press A to exit the setting screen.

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

In the Alarm Mode, press E to cycle through the settings shown below.

· 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.

Alarm Off

Signal Off

Alarm On

Signal Off

Alarm Off

Signal On

Alarm On

Signal On

Alarm On Indicator / Hourly Time Signal On Indicator

Stopwatch

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.

· 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.

Hours Minutes

Seconds

1/100 second

To measure times with the stopwatch

First runner

finishes.

Display time

of first runner.

Display time of

second runner.

Elapsed Time

Start

Stop

Re-start

Stop

Clear

Split Time

Start

Split

Split release

Stop

Clear

(SPL displayed)

Two Finishes

Start

Split

Stop

Split release

Clear

Second runner

finishes.

Backlight

The backlight uses an EL (electro-luminescent)

panel that causes the entire display to glow for

easy reading in the dark. The watch's auto light

switch automatically turns on the backlight when

you angle the watch towards your face.

· The auto light switch must be turned on

(indicated by the auto light switch on indicator)

for it to operate.

· See "Backlight Precautions" for other important

information about using the backlight.

To turn on the backlight manually

Press L in any mode to illuminate the display for about two seconds.

· Backlight operation is disabled during the bearing sensor calibration

procedure.

· The above operation turns on the backlight regardless of the current auto

light switch setting.

Auto light switch on

indicator

Alarm Operation

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

until you stop it by pressing any button.

To test the alarm

In the Alarm Mode, hold down E to sound the alarm.

About the Auto Light Switch

Turning on the auto light switch causes the backlight to turn on for about two

seconds, 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 turn on

the backlight under bright light.

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

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

· Wear the watch on the outside of your left wrist.

Parallel to

ground

More than

Operation Guide 2767

Warning!

· 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 surprise 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.

To turn the auto light switch on and off

In the Timekeeping Mode, hold down B for about two seconds to toggle the

auto light switch on (

displayed) or off (

not displayed).

· If you are in the Timekeeping Mode when you press B, the watch will go

directly into the Barometer/Thermometer Mode. Keep B depressed until

the auto light switch turns on or off. After that, you can return to the

Timekeeping Mode by pressing D.

· The auto light switch on indicator ( ) is on the display in all modes while

the auto light switch is turned on.

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

when any one of the following conditions exists.

While a direction measurement operation is being performed in the

Digital Compass Mode

While a bearing sensor calibration operation is being performed in the

Digital Compass Mode

While the Hand Setting Mode setting screen is on the display

· The backlight may not light 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.

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.

0 ft

2000 ft

4000 ft

6000 ft

8000 ft

10000 ft

12000 ft

14000 ft

25.84 inHg

22.23 inHg

19.03 inHg

44.7

°F

30.5

°F

16.2

°F

59.0

°F

29.92 inHg

About 3.6

°F

per 1000 ft

About 0.15 inHg per 200 ft

About 0.17 inHg per 200 ft

About 0.192 inHg per 200 ft

About 0.21 inHg per 200 ft

Source: International Civil Aviation Organization

0 m

500 m

1000 m

1500 m

2000 m

2500 m

3000 m

3500 m

4000 m

899 hPa

795 hPa

701 hPa

616 hPa

8.5

°C

4.5

°C

1013 hPa

About 6.5

°C

per 1000 m

About 8 hPa per 100 m

About 9 hPa per 100 m

About 10 hPa per 100 m

About 11 hPa per 100 m

About 12 hPa per 100 m

Altitude

Air Pressure

Temperature

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.

Height of building 130 m

(Relative altitude)

Rooftop at an altitude of

230 m above sea level

(Altitude above sea

level)

Sea

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.

The following describes what you should do to give priority to either altitude or

temperature.

· 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 momentarily affect pressure sensor readings.

Question: How does the barometer work?

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.

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.

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

readings:

When air pressure changes because of changes in the weather

Extreme temperature changes

When the watch itself is subjected to strong impact

Question: How does the altimeter work?

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.

Battery

This watch is equipped with a solar cell and a

rechargeable battery (secondary battery) that is

charged by the electrical power produced by the

solar cell. The illustration shown nearby shows

how you should position the watch for charging.

Example: Orient the watch so its face is pointing

at a light source.

· Note that charging efficiency

drops when any part of the solar

cell is blocked by clothing, etc.

· The illustration shows how to

position a watch with a resin band.

Solar cell

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 normally

exposed to bright light whenever possible.

· This watch employs a solar cell that converts light into electricity, which

charges a built-in rechargeable battery. Normally, the rechargeable battery

should not need replacement, but after very long use over a number of

years, the rechargeable battery may lose its ability to achieve a full charge.

If you experience problems getting the rechargeable battery to a full charge,

contact your dealer or CASIO distributor about having the rechargeable

battery replaced.

· The rechargeable battery should be replaced with a CASIO-specified

CTL1616 battery only. Other rechargeable batteries can cause damage to

the watch.

· 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 4 and when you have the battery replaced.

· 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.