MO0912-EB
Operation Guide 3022
Getting Acquainted
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 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.
Keep the watch exposed to bright light
Bright light
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• 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
cause some watch functions to be 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.
Battery charges in the light. Battery discharges in the dark.
Solar cell
(Converts light to
electrical power.)
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Solar cell
Charge
Rechargeable battery
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Bright light
The electricity generated by the solar cell of the
watch is stored by a built-in battery. Leaving or
using the watch where it is not exposed to light
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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.
• 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.
Electrical
energy
All
LEVEL 1
functions
LEVEL 2
enabled
LEVEL 3
LEVEL 4
charge
Dis-
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
Some
functions
disabled
• 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.
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.
• 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.
• 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.
About This Manual
(Light)
Warning!
• 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.
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.
Stopwatch
Mode
▲
Data Recall
Mode
Press C.
▲
Timekeeping Mode
▲
Countdown
Timer Mode
Alarm Mode
▲
▲
Timekeeping
Use the Timekeeping Mode to set and view the current time and date.
• In the Timekeeping Mode, each press of A toggles the display between
the timekeeping screen and the barometric pressure graph screen.
Timekeeping Screen Barometric Pressure
Month – Day
Day of
week
PM indicator Seconds
Hour : Minutes
Press A.
▲
▲
Graph Screen
Barometric
pressure graph
Hour : Minutes
• You can use buttons B and D to enter a sensor mode directly from the
Timekeeping Mode or from another sensor mode. To enter a sensor mode
from the Data Recall, Stopwatch, Countdown Timer, or Alarm Mode, first
enter the Timekeeping Mode and then press the applicable button.
Sensor Modes
Press B.
Thermometer Mode
▲
Barometer/
Press D.
▲
Altimeter Mode
▲
Press C.
To set the time and date
1. In the Timekeeping Mode, hold down A until the seconds start to flash,
which indicates the setting screen.
2. Press C to move the flashing in the sequence shown below to select the
other settings.
Seconds
Barometric
Pressure Unit
Hour
Minutes
Altitude Unit
• The following steps explain how to configure timekeeping settings only.
12/24-Hour
Format
Temperature
Unit
Powe r
Saving
Ye a r
Month
Day
1
Operation Guide 3022
3. When the timekeeping setting you want to change is flashing, use B and/
or D to change it as described below.
Screen
12H
4. Press A to exit the setting screen.
Note
• You also need to enter the Timekeeping Mode in order to configure the
following settings.
Power saving on/off (“To turn Power Saving on and off”)
Temperature, barometric pressure, and altitude units (“To select the
temperature, barometric pressure, and altitude units”)
• The year can be set in the range of 2000 to 2099. The day of the week is
calculated automatically in accordance with the date you set.
To do this:
Reset the seconds to
Change the hour or minutes
Toggle between 12-hour (12H)
and 24-hour (
Change the year, month, or day
) timekeeping.
24H
00
Do this:
Press D
.
Use D (+) and B (–).
Press D
.
Use D (+) and B (–).
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
Barometric
pressure graph
Barometric
pressure
differential pointer
• The displayed barometric pressure value changes to
a measured barometric pressure falls outside the range of 260 hPa to
1,100 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.
• 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 reappear as soon as the measured
temperature is within the allowable range.
• 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”.
• See “Barometer and Thermometer Precautions” for impor tant precautions.
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.
The barometric pressure graph shows readings of previous measurements for
up to 30 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.
Barometric
pressure
Temperature
Pressing B in the Timekeeping Mode or
Altimeter Mode 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).
hPa (or inHg) if
xxxx
A rising graph generally means improving weather.
Note that if there are sudden changes in weather 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.
• Barometric reading that is out of range (260 hPa to 1,100 hPa or 7.65 inHg
to 32.45 inHg)
• Sensor malfunction
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.
• 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.
Current pressure
greater than most
recent measured
pressure
Current pressure
less than most
recent measured
pressure
About Barometric and Temperature Measurements
• Barometric pressure and temperature measurement operations are
performed as soon as you enter the Barometer/Thermometer Mode. After
that, they are taken at five-second intervals.
• You also can perform a barometric pressure and temperature measurement
at any time by pressing B in the Barometer/Thermometer Mode.
inHg
values
hPa
values
Barometric pressure
differential pointer
Not visible on
the display.
Pressure
differential
examples in the
illustration are
indicated in 3 hPa/
0.1 inHg steps.
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. You can configure an altimeter alarm that sounds
whenever the measured altitude reaches a value you preset. Altimeter
functions also include storage of measurement data in memory.
Important!
• 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.
• 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.
• 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.
A falling graph generally means deteriorating weather.
2
Operation Guide 3022
How the Altimeter Measures Altitude
The altimeter can measure altitude based on its own preset values, or a
reference altitude specified by you.
When you measure altitude based on preset values
Data produced by the watch’s barometric pressure sensor is conver ted to
approximate altitude based on ISA (International Standard Atmosphere)
conversion values stored in watch memory.
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.
• To determine the height of a tall building, for
example, specify zero for the reference
altitude value while you are on the ground
floor. Then when you go to a higher floor, the
altitude displayed by the watch will indicate
the height from the ground floor. Note 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 that, the altitude readings
produced by the watch will be more accurate
than they would without a reference altitude.
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.
You can select either of the two altitude measurement types described below.
SHORT: Readings at five-second intervals for one hour
LONG: Readings at five-second intervals for the first three minutes followed
by two-minute intervals for approximately nine or 10 hours
• For information about configuring settings for the altitude reading interval
and duration, see “To select the altitude measurement type”.
Important!
• 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 “Altitude Records”.
A
400
B
To display your current altitude
Altitude graph
Current altitude
Timekeeping
Altitude alarm on
indicator
Altitude Graph Screen
Altitude alarm value
differential
Altitude
differential
pointer
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).
• 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
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”.
Mode time
Current altitude
Altitude Alarm
Differential Screen
1. Press D in the Timekeeping Mode or
Barometer/Thermometer Mode to enter the
Altimeter Mode.
• 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.
2. If you want the altitude value and altitude
graph to be updated in accordance with the
altitude measurement type (interval and
duration) you have selected, leave the watch
in the Altimeter Mode.
• In the Altimeter Mode, press A to toggle
the display between the Altitude Graph
screen and the Altitude Alarm Differential
screen.
• For details about the altitude alarm
differential, see "Altitude Alarm".
• If you want to restart the altitude
measurement operation at any point, press
D.
3. To stop the altitude measurement operation,
press C to exit the Altimeter Mode.
xxxxx meters (or feet) if a
To select the altitude measurement type
Altitude measurement type
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4. Press D to toggle the altitude measurement type setting between SHORT
and LONG.
• SHORT: Readings at five-second intervals for one hour
• LONG : Readings at five-second intervals for the first three minutes
followed by two-minute intervals for approximately nine or 10 hours
thereafter
5. Press A to exit the setting screen.
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 (hour, minutes) and altitude: Up to 40
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.
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1. In the Altimeter Mode, hold down A.
This will cause SET to appear on the display.
•
2. Release A and wait for four or five more
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seconds until either
reference altitude value (if set) starts to flash.
This is the setting screen.
3. Press C twice to display the current altitude
measurement type setting.
• This will cause either SHORT or LONG to
flash on the display.
OFF or the current
To store an altitude record in memory
In the Altimeter Mode, hold down D for about
one second until the watch beeps twice. This
indicates that a record of the altitude reading 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 40 records. If there are 40 records
already in memory, storing another one deletes
the oldest record automatically to make room
for the new one.
To view altitude record data
1. Use C to enter the Data Recall Mode.
2. Use D and B to cycle through the altitude record screens in the
sequence shown below.
Maximum Data
Recording date
(Year Month – Day)
▲
Recording time
(Hour : Minutes)
• The maximum altitude record appears first. After that, each press of D or
B scrolls through records in sequence.
• If an error occurs while altitude data is being stored in memory or if there is
no altitude data in memory,
value on the corresponding altitude record screen.
Deleting All Altitude Record Data
Use the following procedure to delete all altitude record data, including the
maximum altitude record. Note that deletion of individual altitude records is
not supported.
Altitude
Press D.
▲
Press B.
xxxx is shown for the measured altitude
x
▲
Oldest Data
Newest Data
▲
▲
▲
To delete all altitude record data
1. In the Data Recall Mode, press A.
• This will cause CLEAR to appear on the display, letting you know that
data is about to be deleted.
2. Keep A depressed for about three more seconds, until CLEAR starts to
flash. You can release A at this time.
• CLEAR will continue to flash after all of the data is deleted. After that, the
display will change to “xxxx”, which indicates that there is no data in
memory.
3
Operation Guide 3022
Other Altimeter Mode Features
This section explains other features and settings that are available in the
Altimeter Mode. Note that all of the information in this section applies to all
types of Altimeter Mode measurements, unless specifically indicated
otherwise.
Specifying a Reference Altitude
After you specify a reference altitude, the watch adjusts its air-pressure-toaltitude 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
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3. Press D (+) or B (–) 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).
• Pressing B and D at the same time returns to
altitude), so the watch performs air pressure to altitude conversions
based on preset data only.
4. Press A to exit the setting screen.
Altitude graph
Time Altitude
• 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).
Altitude Differential Pointer
While a measurement operation is being performed in the Altimeter Mode, the
altitude differential pointer indicates the difference between the current
altitude and the last measured altitude.
Current altitude
greater than most
recent measured
altitude
1. In the Altimeter Mode, hold down A.
• This will cause SET to appear on the
display.
2. Release A and wait for four or five more
seconds until either
reference altitude value (if set) starts to flash.
This is the setting screen.
OFF or the current
OFF (no reference
The altitude graph shows Altimeter Mode
measurement results.
• The vertical axis of the graph represents
altitude, and each dot stands for 10 meters (40
feet).
Foot
values
Meter
values
To set the altitude alarm
Altitude alarm value
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4. Press D (+) or B (–) to change the current altitude alarm value by 5
meters (or 20 feet).
• You can set the altitude alarm value within the range of –10,000 to
10,000 meters (–32,800 to 32,800 feet).
Pressing B and D at the same time resets the altitude alarm value to O.
•
5. Press A to exit the setting screen.
1. In the Altimeter Mode, hold down A.
• This will cause SET to appear on the
display.
2. Release A and wait for four or five more
seconds until either
reference altitude value (if set) starts to flash.
This is the setting screen.
3. Press C once to display the altitude alarm
setting.
OFF or the current
To turn the altitude alarm on and off
Altitude alarm on indicator
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On/Off status
4. Press L to toggle the altitude alarm on (
5. Press A to exit the setting screen.
• An altitude alarm on indicator appears on the Altimeter Mode’s Altitude
Graph screen or Altitude Alarm Differential screen while the altitude alarm
is turned on. This indicator does not appear on any other screen or in any
other mode.
1. In the Altimeter Mode, hold down A.
• This will cause SET to appear on the
display.
2. Release A and wait for four or five more
seconds until either
reference altitude value (if set) starts to flash.
This is the setting screen.
3. Press C once to display the altitude alarm
setting.
OFF or the current
ON) and off (OFF).
Stopwatch
1/100 second
Hours
Minutes
Seconds
Timekeeping
Mode time
To measure times with the stopwatch
Elapsed Time
DD D D B
Start Stop Re-start Stop Clear
J
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 C.
JJ
J
Current altitude less
than most recent
measured altitude
Altitude differential pointer
• Altitude differential is indicated in the range of ±25 meters, in 5-meter units.
• Altitude is calculated and displayed using meters as the standard. Altitude
also can be read in feet units as shown in the illustration.
Altitude Alarm
The altitude alarm sounds for about five seconds when the current altitude
matches a preset value during an altitude measurement operation. You can
press any button to stop the alarm after it starts to sound.
The altitude alarm sounds only while the Altimeter Mode’s Altitude Graph
screen or Altitude Alarm Differential screen is on the display. It does not
sound while the watch is in another mode or while another Altimeter Mode
screen is on the display.
Example
If you set the altitude alarm at 130 meters, it sounds when you pass the 130meter mark on your way up and on your way back down.
Altitude differential
examples in the
illustration are
indicated in 10-meter/
33-foot steps.
Split Time
DB B D B
Start Split Split release Stop Clear
JJ J
(
SPL displayed)
J
Two Finishes
DB D B B
JJ J
J
Start Split Stop Split release Clear
First runner
finishes.
Display time
of first runner.
Second runner
finishes.
Display time of
second runner.
4
Operation Guide 3022
Countdown Timer
Mode indicator
Hours
Minutes
• If the countdown start time is not displayed, use the procedure under “To
2. Press C to move the flashing between the hour and minute settings.
3. Use D (+) and B (–) to change the flashing item.
• To set the starting value of the countdown time to 24 hours, set
4. Press A to exit the setting screen.
Seconds
Timekeeping
Mode time
use the countdown timer” to display it.
OH .
To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.
• When the end of the countdown is reached, the alarm sounds for five
seconds or until you stop it by pressing any button. The countdown time is
reset to its starting value automatically when the alarm sounds.
• Press D while a countdown operation is in progress to pause it. Press D
again to resume the countdown.
• To stop a countdown operation completely, first pause it (by pressing D)
and then press B. This retur ns the countdown time to its starting value.
You can set the countdown timer within a range
of one minute to 24 hours. An alarm sounds
when the countdown reaches zero.
• All of the operations in this section are
performed in the Countdown Timer Mode,
which you enter by pressing C.
To set the countdown start time
1. While the countdown start time is on the
display in the Countdown Timer Mode, hold
down A until the hour setting of the
countdown start time starts to flash, which
indicates the setting screen.
Alarms
Mode indicator
Alarm number
Timekeeping
Mode time
Alarm time
(Hour : Minutes)
To set an alarm time
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Alarm on
indicator
2. Hold down A until the hour setting of the alarm time starts to flash, which
3. Press C to move the flashing between the hour and minute settings.
4. While a setting is flashing, use D (+) and B (–) to change it.
5. Press A to exit the setting screen.
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.
Hourly time signal
on indicator
indicates the setting screen.
• This turns on the alarm automatically.
• 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).
To test the alarm
In the Alarm Mode, hold down D to sound the alarm.
To turn an alarm and the Hourly Time Signal on and off
1. In the Alarm Mode, use D and B to select an alarm or the Hourly Time
Signal.
2. When the alarm or the Hourly Time Signal you want to is selected, press
A to turn it on and off.
Indicates alarm is ON.
Indicates Hourly Time Signal is ON.
• The alarm 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.
You can set five independent daily alarms. When
an alarm is turned on, the alarm tone sounds
when the alarm time is reached.
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 (
indicates an alarm screen.
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
appears first.
• All of the operations in this section are
performed in the Alarm Mode, which you enter
by pressing C.
1. In the Alarm Mode, use D and B to scroll
through the alarm screens until the one whose
time you want to set is displayed.
ALx1 through ALx5 )
is shown when
D
B
ALx2
ALx5
ALx3
ALx4
ALx1
) and the Hourly Time Signal on indicator ( )
Illumination
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.
• The auto light switch must be turned on
Auto light switch on
indicator
(indicated by the auto light switch on indicator)
for it to operate.
• See “Illumination Precautions” for other
important information about using illumination.
To turn on illumination manually
Press L in any mode to illuminate the display for about one second.
• The above operation turns on illumination regardless of the current auto
light switch setting.
• Illumination is disabled while the Barometer/Thermometer or Altimeter
Mode setting screen is on the display.
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.
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.
Parallel to
ground
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 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.
More than
40
°
To turn the auto light switch on and off
In the Timekeeping Mode, hold down L for 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.
• 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.
• 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
During sensor measurement
While the Barometer/Thermometer or Altimeter Mode setting screen is
displayed
Questions & Answers
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.
5
Operation Guide 3022
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.
Altitude Air Pressure Temperature
616 hPa
4000 m
3500 m
3000 m
2500 m
2000 m
1500 m
1000 m
500 m
0 m
14000 ft
12000 ft
10000 ft
8000 ft
6000 ft
4000 ft
2000 ft
0 ft
Source: International Civil Aviation Organization
• 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
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)
701 hPa
795 hPa
899 hPa
19.03 inHg
22.23 inHg
25.84 inHg
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
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
–11°C
–4.5°C
About 6.5°C
per 1000 m
2°C
8.5°C
15°C1013 hPa
16.2°F
30.5°F
About 3.6°F
per 1000 ft
44.7°F
59.0°F29.92 inHg
Rooftop at an altitude of
230 m above sea level
(absolute altitude)
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.
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 affect pressure sensor readings momentarily.
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.
Example: Orient the watch so its face is
• The illustration shows how to position a
• Note that charging efficiency drops when
• You should try to keep the watch outside
pointing at a light source.
watch with a resin band.
any part of the solar cell is blocked by
clothing, etc.
of your sleeve as much as possible.
Charging is reduced significantly if the
face is covered only partially.
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 exposed
to bright light whenever possible.
• 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.
• Never try to remove or replace the watch’s special battery yourself. Use of
the wrong type of battery can damage 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 5 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.
Battery Power Indicator and Recover Indicator
The battery power indicator on the display shows you the current status of the
rechargeable battery’s power.
Battery power
indicator
Level
1
2
3
Battery Power
Indicator
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Function Status
All functions enabled.
All functions enabled.
Illumination, beeper, and
sensor operation disabled.
(Charge Soon Alert)
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5
• The flashing indicator at Level 3 and the flashing CHG indicator at
Level 4 tell you that battery power is very low and that exposure to bright
light for charging is required as soon as possible.
• At Level 5, all functions are disabled and settings return to their initial
factory defaults. Once the battery is charged to Level 2 after falling to
Level 5, reconfigure the current time, date, and other settings.
• Display indicators reappear as soon as the battery is charged from Level 4
to Level 2.
• 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.
Recover indicator
• Even if battery power is at Level 1 or Level 2, the 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 RECOV on the
display.
• If RECOV appears frequently, it probably means that remaining battery
power is low. Leave the watch in bright light to allow it to charge.
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.
Warning!
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
• Under direct sunlight
• Performing multiple sensor, illumination, or
beeper operations during a short period may
cause RECOV to appear on the display.
Illumination, alarm, countdown timer alarm,
Hourly Time Signal, and sensor operations will
be disabled until battery power recovers.
After some time, battery power will recover and
RECOV will disappear, indicating that the
above functions are enabled again.
Except for timekeeping and
the CHG indicator, all
functions and display
indicators are disabled.
All functions disabled.
6
Operation Guide 3022
Charging Guide
After a full charge, timekeeping remains enabled for up to about seven 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.
Exposure Level (Brightness)
Outdoor Sunlight (50,000 lux)
Sunlight Through a Window (10,000 lux)
Daylight Through a Window on a Cloudy Day (5,000 lux)
Indoor Fluorescent Lighting (500 lux)
• Since these are the specs, we can include all the technical details.
• 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 hours of altimeter measurements, once per month
• Stable operation is promoted by frequent exposure to light.
Recovery Times
The table below shows the amount exposure that is required to take the
battery from one level to the next.
Exposure Level
(Brightness)
Outdoor Sunlight
(50,000 lux)
Sunlight Through a
Window (10,000 lux)
Daylight Through a
Window on a Cloudy
Day (5,000 lux)
Indoor Fluorescent
Lighting (500 lux)
• The above exposure time values are all for reference only. Actual required
exposure times depend on lighting conditions.
Approximate Exposure Time
Level 5 Level 4 Level 3 Level 2 Level 1
2 hours 19 hours 6 hours
5 hours 96 hours 27 hours
9 hours 194 hours 54 hours
97 hours - - - - - - - - - - - - - - - -
▲
Approximate
Exposure Time
5 minutes
24 minutes
48 minutes
8 hours
▲
Reference
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.
Auto Return Features
• The watch returns to the Timekeeping Mode automatically if you do not
perform any button operation for two or three minutes in the Data Recall,
Alarm, 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
(altitude measurement type : LONG) or after one hour (altitude
measurement type : SHORT).
• 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.
Scrolling
The B and D buttons are used on the setting screen to scroll through data
on the display. In most cases, holding down these buttons during a scroll
operation scrolls through the data at high speed.
Sensor Malfunction Indicator
Subjecting the watch to strong impact can cause sensor malfunction or
improper contact of internal circuitry. When this happens,
on the display and sensor operations will be disabled.
Barometric
Pressure
Measurement
• If appears while a measurement operation is being performed in a
sensor mode, restart the measurement. If
again, it can mean there is something wrong with the sensor.
Altitude
Measurement
appears on the display
will appear
• Even if battery power is at Level 1 or Level 2, the Barometer/Thermometer
Mode or Altimeter Mode sensor may be disabled if there is not enough
voltage available to power it sufficiently. In this case,
the display. This does not indicate malfunction, and sensor operation should
resume once battery voltage returns to its normal level.
• If
Button Operation Tone
keeps appearing during measurement, it could mean there is a
problem with the applicable sensor.
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.
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.
• The following tones are not affected when you
turn off the button operation tone.
Alarm
Hourly Time Signal
Countdown Timer Mode alarm
Altitude alarm
Altitude storage confirmation tone
will appear on
To turn the button operation tone on and off
In any mode (except when a setting screen is on the display), hold down C
▲
to toggle the button operation tone on (
displayed).
• Since the C button 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.
Power Saving
Elapsed Time in
Dark
60 to 70 minutes
(Display Sleep)
6 or 7 days
(Function Sleep)
• Wearing the watch inside the sleeve of clothing can cause it to enter the
sleep state.
• 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 in the sleep state already 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 Altimeter,
Countdown Timer, or Stopwatch Mode.
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”.
Display
Blank, with
PS flashing
Blank, with
flashing
PS not
not displayed) and off (
Operation
Display is off, but all functions are
enabled.
All functions are disabled, but
timekeeping is maintained.
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.
To turn Power Saving on and off
Power saving on
indicator
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1. In the Timekeeping Mode, hold down A until
the seconds start to flash, which indicates the
setting screen.
2. Press C seven times until the Power Saving
on/off screen appears.
3. Press D to toggle Power Saving on (
OFF).
off (
4. Press A to exit the setting screen.
• The Power Saving on indicator (PS) is on the
display in all modes while Power Saving is
turned on.
ON) and
7
Operation Guide 3022
Timekeeping
• 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
• 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 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.
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.
• Frequent use of illumination runs down the battery.
Auto light switch precautions
• 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.
• 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.
More than 15 degrees
too high
• 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.
• 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
• The pressure sensor built into this watch measures changes in air
pressure, which you can then apply to your own weather predictions.
However, 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.
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 temperature readings produced by the watch, you
can calibrate the sensor to correct the errors.
Important!
• Calibrating the barometric pressure sensor incorrectly 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.
• Calibrating the temperature sensor incorrectly 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.
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.
00
without changing the minutes.
• 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.
To calibrate the pressure sensor and the temperature sensor
1. Press B to enter the Barometer/
Thermometer Mode.
2. In the Barometer/Thermometer Mode, hold
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4. Use the D (+) and B (–) buttons to set the calibration value in the units
shown below.
Temperature 0.1°C (0.2°F)
Barometric Pressure 1 hPa (0.05 inHg)
• Pressing B and D at the same time returns to the factory calibration
(OFF).
5. Press A to return to the Barometer/Thermometer Mode screen.
down A.
This will cause SET to appear on the display.
•
3. Release A and wait for four or five more
seconds until either
reference temperature value (if set) starts to
flash. This is the setting screen.
• If you want to calibrate the barometric
pressure sensor, press C to move the
flashing to the upper display area. This is
the pressure sensor calibration screen.
•
At this time,
value should be flashing on the
OFF or the current
OFF
or the barometric pressure
display
.
To select the temperature, barometric pressure, and altitude units
1. Enter the Timekeeping Mode.
2. Hold down A until the seconds start to flash,
which indicates the setting screen.
3. Use C to select the setting screen for the unit
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4. Press D to change the unit setting.
• Each press of D changes the selected unit setting as shown below.
Temperature
Altitude m and ft
Barometric Pressure hPa and inHg
5. After the settings are the way you want, press A to exit the setting screen.
you want to change.
• See step 2 under “To set the time and date”
for information about how to scroll through
setting screens.
°
C and °F
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