MO0405-EA
Operation Guide 2872
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 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 “Power Supply” of this manual for important
information you need to know when exposing the watch to bright
light.
Applications
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.
About This Manual
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.
Sensor
If the digital display of the watch is blank...
If the PS indicator is on the display (either
flashing or steady), it means that the watch’s
Power Saving function has turned it off 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 will recover 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” for more information.
• 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.
(Light)
*
*
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.
Sensor Modes
Stopwatch
Mode
Timekeeping Mode
▲
▲
Digital
Compass Mode
Press D.
Press E.
Altimeter Mode
Barometer/
Thermometer Mode
▲
▲
Data Recall Mode
▲
Press C.
▲
Press B.
▲
Countdown
Timer Mode
• You can use buttons B, D, and E to directly enter a sensor mode from
the Timekeeping Mode or from another sensor mode. To enter a sensor
mode from the Stopwatch, Countdown Timer, Data Recall, or Alarm Mode,
first enter the Timekeeping Mode and then press the applicable button.
Alarm Mode
▲
▲
Press C.
Timekeeping
Use the Timekeeping Mode to view the current
time and date. You also need to enter the
Timekeeping Mode to configure timekeeping
settings, as well as the display illumination
duration and Power Saving setting.
• In the Timekeeping Mode, press A to toggle
between the month–day and the day of the
week–day at the top of the display.
Month – Day
Press A.
Day
PM indicator
3. When the timekeeping setting you want to change is flashing, use D and/
or B to change it as described below.
• The following steps explain how to configure timekeeping settings only.
Screen
To do this:
Reset the seconds to 00
Do this:
Press D.
Change the hour or minutes
Use D (+) and B (–).
Toggle between 12-hour (12H)
and 24-hour (24H) timekeeping
Change the year, month, or day
Press D.
Press D (+) and B (–).
Seconds
Hour : Minutes
4. After the settings are the way you want, press A to exit the setting screen.
Day of week
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 other
settings.
Seconds
Power
Saving
Hour
Day
Minutes
Month
12/24-Hour
Format
Year
Note
• For information about specifying how long the display remains illuminated,
see “To specify the illumination duration”.
• For details about configuring settings for the Power Saving feature, see
“Power Saving”.
• 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.
1
Operation Guide 2872
Barometer/Thermometer
• 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 day of the week is
calculated automatically in accordance with the date you set.
• 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 4.
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 E in the the Timekeeping or in any of
other sensor modes enters the Barometer/
Thermometer Mode and automatically starts
taking barometric pressure and temperature
measurements.
• 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).
Barometric
Barometric
pressure
pressure
indicators
• The displayed barometric pressure value changes to xxxx 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 xxx °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.
• In some areas, barometric pressure is expressed in millibars (mb) instead
of hecto-pascals (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
change the barometric pressure and temperature units”.
• See “Barometer and Thermometer Precautions” for important precautions.
Temperature
Digital Compass
A built-in bearing sensor detects magnetic north and indicates one of 16
directions on the display. 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
12 o’clock position
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Timekeeping
Mode time
1. While in the Timekeeping or in any of the other
sensor modes, press B to enter the Digital
Compass Mode.
• At this time, the watch immediately starts a
Digital Compass operation. After about two
seconds, letters appear on the display to
indicate the direction that the 12 o’clock
position of the watch is pointing.
2. Press C to return to the Timekeeping Mode.
To take a direction reading
Magnetic north pointer
12 o’clock position
Direction
indicator
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Angle value (in degrees)
WN
W NW NNW
N
0°
NN
W SW WSW
SS
W
270°
E NE ENE
S
E
ES
E SE SSE
180°
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 B to start a Digital Compass
measurement operation.
• After about two seconds, the direction that the
12 o’clock position of the watch is pointing
appears on the display.
• 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.
90°
• During measurement, the watch displays an angle value, a direction
indicator, and four direction pointers, which change dynamically when the
watch is moved. After measurement is complete, the angle value,
direction indicator, and four direction pointers are frozen in accordance
with the last measurement.
• The indicator flashes on the display while a measurement is in progress.
Note
• Note that taking a measurement
while the watch is not horizontal
(in relation to the horizon) can
result in large measurement error.
• The margin of error for the angle value is ±11 degrees. If the indicated
direction is northwest (NW) and 315 degrees, for example, the actual
direction can be anywhere from 304 to 326 degrees.
• Any ongoing direction measurement operation is temporarily paused while
the watch is performing an alert operation (daily alarm, Hourly Time Signal,
countdown timer alarm) 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 it to pause is finished.
• The following table shows the meanings of each of the direction
abbreviations that appear on the display.
Direction Meaning
N
North
E
East
S
South
W
West
Direction
Meaning Direction Meaning Direction Meaning
NorthEastENE
NE
Northeast
northeast
northeast
EastSouthESE
SE
Southeast
SSE
southeast
southeast
SouthWestSSW
SW Southwest WSW
southwest
southwest
WestNorthWNW
NW Northwest NNW
northwest
northwest
NNE
• See “Digital Compass Precautions” for other important imformation about
taking direction readings.
Barometric Pressure Indicators
The watch’s barometric pressure indicators graphically show you whether the
barometric pressure for up to the last 15 hours has been rising, holding
steady, or falling. Since changes in barometric pressure signal changes in the
atmosphere, you can predict upcoming weather with reasonable accuracy by
looking at the current tendency of barometric pressure.
The barometric pressure indicator display area of the watch has three lines:
top, middle, and bottom. The location of each indicator tells you whether
barometric pressure is rising, steady, or falling.
Rise greater than 3hPa from previous
reading
Within ±2hPa of previous reading
Fall greater than 3hPa from previous
reading
How to Interpret Barometric Pressure Indicators
• The rightmost indicator is the newest indicator, the leftmost indicator is the
oldest indicator.
Rising pressure generally means improving weather.
Falling pressure generally means deteriorating weather.
• The locations of the indicators, not their pattern, indicates barometric
pressure tendencies.
• A series of multiple indicators in the top line of the barometric pressure
indicator display area indicates a series of rising pressure readings. It does
not indicate steady pressure at a high level.
• A series of multiple indicators in the bottom line of the barometric pressure
indicator display area indicates a series of falling pressure readings. It does
not indicate steady pressure at a low level.
• A movement of indicators from the top line to the
middle line does not indicate falling pressure, and
a movement of indicators from the bottom line to
the middle line does not indicate rising pressure. A
move to the middle line indicates that the current
pressure measurement is relatively unchanged
(within ±2hPa) from the previous measurement.
Rising pressure is not indicated until an indicator
appears in the top line, and falling pressure is not
indicated until an indicator appears in the bottom line.
• Steady pressure is indicated by a series of indicators in the middle line.
Notes
• Though you can configure the watch to display barometric pressure in units
of hPa or inHg, the barometric pressure indicator positions are always
determined based on ±3 hPa changes in barometric pressure.
• No indicator is plotted if a measurement operation cannot be performed
due to sensor malfunction, low battery power, because of the watch is in
the function sleep state, or any other reason.
2
Operation Guide 2872
About Barometric and Temperature Measurements
To take an altitude reading
Altitude indicator
Temperature
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• 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.
• 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 positioning indicators in the barometric
pressure indicator display area.
• You can also perform a barometric pressure and temperature measurement
at any time by pressing E in the Barometer/Thermometer Mode.
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Altitude
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 all
moisture from the case. It takes approximately 20 to 30 minutes for the
case of the watch to reach the actual surrounding temperature.
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 preprogrammed 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.
• Pressing D 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”.
Altitude Indicator
In the Altimeter Mode, the altitude indicator shows the current altitude reading
in meters (m). As shown in the illustration below, the altitude indicator is
divided into two zones: one for 0 to 999 meters, and one for 1000 to 10,000
meters.
Though you can specify either meters or feet for the watch’s altitude
measurements, the altitude indicator always shows altitude in meters.
1000+ meter zone
0-999 meter zone
The above altitude indicator indicates an altitude of approximately 4,340 meters.
• The 0-999 meter zone starts from the 12 o'clock position (0 meters), and
indicates altitudes in 20-meter units.
• The 1000+ meter zone indicates altitudes in 1000-meter units.
Setting a Reference Altitude
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.
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.
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B
A
400
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To set a reference altitude
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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 be without a reference altitude.
Timekeeping Mode
time
Pressing D 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 disappears
as measurements are taken every two minutes.
1. In the Altimeter Mode, hold down A until
OFF (flashing) appears or until the display
goes blank. This is the setting screen.
• If the display goes blank, it means there is a
reference altitude value. Release A and
wait for four or five seconds until the value
appears.
2. 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 D 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.
3
Operation Guide 2872
Altitude Records
To measure times with the stopwatch
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 (month, day), time (hour, minutes), altitude, and altitude
indicator: Up to 41 records
Maximum altitude (including recording date and time) and altitude indicator:
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.
Elapsed Time
E
JE
Start
Stop
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 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.
E
Re-start
J
Split Time
E
JA
JA
Start
Split
Split release
(SPL displayed)
Two Finishes
E
JA
JE
Start
Split
Stop
First runner
Second runner
finishes.
finishes.
Display time
of first runner.
Minute
indicator
Seconds
indicator
1. Use C to enter the Data Recall Mode.
2. Press D to cycle through the altitude record screens in the sequence
shown below.
Oldest Data
▲
Seconds
indicator
On
Off
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Recording time
(Hour : Minutes)
• The maximum altitude record appears first. After that, each press of D
scrolls through records in sequence, starting from the oldest record.
• If an error occurs while altitude data is being stored in memory or if there is
no altitude data in memory, xxxxx is shown for the measured altitude
value on the corresponding altitude record screen.
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 the recording
time.
2. Hold down A until xxxxx appears in place of the maximum altitude
value. This indicates that the data is deleted.
Seconds indicator
Minute indicator
1/100
second
Seconds
Minutes
JA
Clear
A
Split release
Display time of
second runner.
JA
Clear
J
The minute and seconds indicators graphically
indicate elapsed time values in the Stopwatch
Mode. The seconds indicator acts like the second
hand of an analog stopwatch, and moves on the
display to indicate the seconds count. The minute
indicator acts like the minute hand of an analog
stopwatch, and moves on the display to indicate
the minute count.
• You can use the following procedure to turn
display of the minute and seconds indicators
on and off.
1. With the Stopwatch Mode cleared to all zeros,
hold down A until the seconds indicator
starts flashing. This is the setting screen.
2. Press D to toggle display of the minute and
seconds indicators on (indicated when the
minute indicator is displayed) and off (minute
indicator not displayed).
3. When the setting is the way you want, press
A to exit the setting screen.
Countdown Timer
Seconds indicator You can set a countdown timer start time in the
Minute indicator
range of one minute to 60 minutes. An alarm
sounds when the countdown reaches zero. An
auto-repeat feature causes the countdown to
restart automatically when the end of a
countdown is reached, and a progress beeper
signals the progress of the countdown.
• All of the operations in this section are
performed in the Countdown Timer Mode,
which you enter by pressing C.
Seconds
Minutes
Timekeeping
Mode time
Configuring the Countdown Timer
Stopwatch
Hours
E
Stop
J
To turn display of the Stopwatch Mode minute and seconds
indicators on and off
Minute indicator
▲
▲
Press D.
Newest Data
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Recording date
(Month – Day)
Altitude
JA
Clear
Minute and Seconds Indicators
To view altitude record data
Maximum Data
Altitude indicator
E
Stop
J
Timekeeping
Mode time
The stopwatch lets you measure elapsed time,
split times, and two finishes. Display of the minute
and seconds indicators can be turned on or off.
• The display range of the stopwatch is 9 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.
The following are the settings you should configure before actually using the
countdown timer.
• Countdown start time
• Auto-repeat on/off
• Progress beeper on/off
• Minute, seconds indicator display on/off
Countdown start time
You can set a countdown start time in the range of one minute to 60 minutes,
in one-minute increments.
Auto-repeat
Whenever zero is reached, the watch beeps and auto-repeat automatically
restarts the countdown from the countdown start time you set. Turning off
auto-repeat causes the countdown to stop and the countdown start time to
appear on the display when the end of the countdown is reached.
Progress Beeper
When the progress beeper is turned on, the watch beeps at minute 10, 5, 4,
3, 2, and 1, of the countdown, and at second 50, 40, 30, 20, 10, 5, 4, 3, 2,
and 1 of the final minute of the countdown.
Minute and Seconds Indicators
The minute and seconds indicators graphically indicate the Countdown Timer
Mode minutes and seconds as they are counted down. You can turn display of
these indicators on or off.
4
Operation Guide 2872
To configure countdown timer settings
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Start
Time
Minute indicator
Seconds
indicator
On
Off
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To set an alarm time
1. While the countdown start time is on the
display in the Countdown Timer Mode, hold
down A until the minute setting of the
countdown start time starts to flash, which
indicates the setting screen.
• If the countdown start time is not displayed,
use the procedure under “To use the
countdown timer” to display it.
2. Press C to move the flashing in the sequence
shown below to select other settings.
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Auto-repeat indicator
Auto-repeat
on/off
Minute, seconds
indicators on/off
3. Perform the following operations, depending
on which setting is currently selected on the
display.
• While the minute setting is flashing, use D
(+) or B (–) to change it.
• While the auto-repeat on/off setting (ON or
OFF) is flashing on the display, press D to
toggle auto-repeat on (ON) and off (OFF).
• While the seconds indicator is flashing,
press D to toggle display of the minute and
seconds indicators on (indicated when the
minute indicator is displayed) and off
(minute indicator not displayed).
4. Press A to exit the setting screen.
• The auto-repeat indicator ( ) appears on the
display while auto-repeat is turned on.
To turn the progress beeper on and off
Pressing A while the countdown start time is on
the display or while a countdown timer operation
is in progress in the Countdown Timer Mode
toggles progress beeper operation on (
displayed) and off ( not displayed).
Progress beeper on indicator
To use the countdown timer
Minute indicator
Seconds
indicator
Press E while in the Countdown Timer Mode to
start the countdown timer.
• When display of the minute and seconds
indicators is turned on, the indicators show the
remaining countdown time (minutes and
seconds). The seconds and minute indicators
are positioned at 12 o’clock when the current
countdown time is 60 minutes.
• When the countdown reaches zero, the alarm sounds for five seconds or
until you stop it by pressing any button.
• Press E while a countdown operation is in progress to pause it. Press E
again to resume the countdown.
• The countdown timer operation continues even if you exit the Countdown
Timer Mode.
• To completely stop a countdown operation, first pause it (by pressing E),
and then press A. This returns the countdown time to its starting value.
• Frequent use of auto-repeat and the alarm can run down battery power.
Alarms
Alarm on indicator
Hourly time signal on
indicator
Alarm number
Timekeeping
Mode time
Alarm time
(Hour : Minutes)
You can set five independent daily alarms. When
an alarm is turned on, the alarm tone sounds
when the alarm time is reached.
You can also turn on an Hourly Time Signal,
which will cause the watch to beep twice every
hour on the hour.
• The alarm number (ALx1 through
ALx5 ) indicates an alarm screen. :00 is
shown for the alarm time 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
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 to scroll through
the alarm screens until the one whose time
you want to set is displayed.
AL x1
AL x2
AL x3
:00
AL x5
AL x4
2. Hold down A until the hour setting of the alarm time start to flash, which
indicates the setting screen.
• This automatically turns on the alarm.
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.
• 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 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.
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 to select an alarm or the Hourly Time Signal.
2. When the alarm or the Hourly Time Signal you want to is selected, press
E to turn it on and off.
Indicates alarm is ON.
Indicates Hourly Time Signal is ON.
) and the Hourly Time Signal on indicator ( )
• 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.
Backlight
Auto light switch on
indicator
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.
• You can specify 1.5 seconds or 2.5 seconds as
the illumination duration.
• 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.
• The above operation turns on the backlight regardless of the current auto
light switch setting.
• The backlight is disabled while you are performing a bearing sensor
calibration operation in the Digital Compass Mode.
About the Auto Light Switch
Turning on the auto light switch causes the backlight 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 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 wrist.
Parallel to
ground
More than
40°
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.
5
Operation Guide 2872
To turn the auto light switch on and off
In any mode except while a setting is flashing on the display, hold down L for
about two seconds to toggle the auto light switch on (
displayed) and off
(
not displayed).
• 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 turns off automatically whenever battery power drops
to Level 3.
• 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.
• 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
While a direction measurement operation is being performed or while a
bearing sensor calibration operation in the Digital Compass Mode
To specify the illumination duration
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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 B to toggle the illumination duration
setting between 2.5 seconds ( ) and 1.5
seconds ( ).
3. After the setting is the way you want, press A
to exit the setting screen.
14000 ft
12000 ft
10000 ft
8000 ft
6000 ft
4000 ft
2000 ft
0 ft
19.03 inHg
About 0.15 inHg per 200 ft
16.2°F
22.23 inHg
About 0.17 inHg per 200 ft
30.5°F
25.84 inHg
About 0.192 inHg per 200 ft 44.7°F
29.92 inHg
About 0.21 inHg per 200 ft
About 3.6°F
per 1000 ft
59.0°F
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)
Rooftop at an altitude of
230 m above sea level
(absolute altitude)
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Sea
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.
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.
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
4000 m
3500 m
3000 m
2500 m
2000 m
1500 m
1000 m
0m
500 m
Air Pressure
Temperature
616 hPa
About 8 hPa per 100 m
–11°C
701 hPa
About 9 hPa per 100 m
–4.5°C
795 hPa
About 10 hPa per 100 m
2°C
899 hPa
About 11 hPa per 100 m
8.5°C
1013 hPa
About 12 hPa per 100 m
15°C
About 6.5°C
per 1000 m
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.
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
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.
• Normally, you should try to keep the
watch outside of your sleeve as much as
possible. Charging is significantly reduced
if the face is only partially covered.
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 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 fully charge, 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 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.
6
Operation Guide 2872
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
All functions enabled.
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Battery power
indicator
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2
3
Function Status
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(Charge Soon Alert)
4
All functions enabled.
Except for timekeeping and
battery power indicator, all
functions and display indicators
are disabled.
All functions disabled.
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
Charging Guide
After a full charge, timekeeping remains enabled for up to about six 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)
Approximate
Exposure Time
5 minutes
24 minutes
48 minutes
8 hours
▲
Charging Precautions
▲
• 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 RECOV. on the display.
If battery power goes low while a measurement operation is in progress,
the value produced by the last successful measurement operation remains
on the display. Attempting to perform a sensor operation in the Digital
Compass Mode will cause xxx to appear on the display. In other sensor
modes, the display will go blank. In the case of temperature, the last
successfully measured value will appear 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.
Recovery Times
The table below shows the amount exposure that is required to take the
battery from one level to the next.
Approximate Exposure Time
Exposure Level
Level 4
Level 3
Level 2
Level 1
(Brightness)
▲
• The flashing CHARGE 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.
• At Level 4, all functions are disabled, memory contents are cleared, and
settings return to their initial factory defaults. Functions are enabled once
again after the rechargeable battery is charged, but you need to set the
time and date after the battery reaches Level 3 (indicated by the L
indicator) from Level 4. You will not be able to set any of the other settings
until the battery reaches Level 2 (indicated by the M indicator) after
dropping to Level 4.
• Display indicators reappear as soon as the battery is charged from Level 4
to Level 3.
• Leaving the watch exposed to direct sunlight or some other very strong light
source can cause the battery power indicator to temporarily show a reading
that is higher than the actual battery level. The correct battery level should
be indicated after a few minutes.
• If you use the backlight or alarms a number of
times during a short period, RECOV. appears
on the display and the backlight, alarm,
countdown timer alarm, hourly time signal, and
sensor operations become disabled until
battery power recovers.
After some time, battery power will recover and
RECOV. will disappear, indicating that the
above functions are enabled again.
Recover indicator
• Since these are the specs, we can include all the technical details.
• Watch is not exposed to light
• Internal timekeeping
• Display on 18 hours per day, sleep state 6 hours per day
• 1 backlight operation (1.5 seconds) per day
• 10 seconds of alarm operation per day
• 10 digital compass operations per week
• 10 hours of altimeter measurements, once per month
• Stable operation is promoted by frequent charging.
Outdoor Sunlight
(50,000 lux)
2 hours
16 hours
5 hours
Sunlight Through a
Window (10,000 lux)
4 hours
81 hours
23 hours
Daylight Through a
Window on a Cloudy
Day (5,000 lux)
7 hours
165 hours
45 hours
Indoor Fluorescent
Lighting (500 lux)
88 hours
--------
--------
• The above exposure time values are all for reference only. Actual required
exposure times depend on lighting conditions.
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 automatically returns to the Timekeeping Mode if you do not
perform any button operation for two or three minutes in the Data Recall,
Alarm, Digital Compass, or Barometer/Thermometer Mode.
• If you do not perform any button operation while in the Altimeter Mode, the
watch automatically returns to the Timekeeping Mode 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 automatically exits the
setting screen.
• Holding down C for about one second while in the Stopwatch, Countdown
Timer, or Data Recall Mode returns to the Timekeeping Mode.
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 its sensor to malfunction or
improper contact of internal circuitry. When this happens, Err (error) will
appear on the display and sensor operations will be disabled.
Digital
Compass
Measurement
Barometric
Pressure
Measurement
Altitude
Measurement
• If Err appears while a measurement operation is being performed in a
sensor mode, restart the measurement. If Err appears 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.
• If Err 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.
7
Operation Guide 2872
Power Saving
Digital Compass Precautions
When turned on, Power Saving automatically enters a sleep state 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 are actually two sleep state levels: “display sleep” and “function
sleep”.
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 should also remember that some maps
indicate true north (instead of magnetic north), and so you should make
allowances when using such maps with this watch.
Blank, with
PS flashing
Blank, with
PS not flashing
Operation
Display is off, but all functions are
enabled.
All functions are disabled, but
timekeeping is maintained.
• 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 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 Countdown Timer
or Stopwatch Mode.
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
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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 (ON) and
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.
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Backlight Precautions
• The electro-luminescent panel that provides illumination loses power after
very long use.
• The illumination provided by the backlight may be hard to see when viewed
under direct sunlight.
• The backlight automatically turns off 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 the backlight 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.
• The backlight may not light if the face of the
watch is more than 15 degrees above or below
More than 15 degrees
parallel. Make sure that the back of your hand
too high
is parallel to the ground.
• The backlight turns off after the preset
illumination duration (see “To specify the
illumination duration”), even if you keep the
watch pointed towards your face.
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”.
Calibrating the Bearing Sensor
Whenever you suspect that direction readings produced by the watch are
wrong, you should calibrate it. You can use either one of two calibration
procedures: bidirectional calibration or northerly calibration.
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). You
could use this calibration procedure, for example, to set the watch to indicate
true north instead of magnetic north.
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
previously set northerly calibration setting.
• 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.
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.
• 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
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• Static electricity or magnetic force can interfere with proper operation of the
auto light switch. If the backlight does not light, 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, the backlight may not light until about one second
after you turn the face of the watch towards you. This does not necessarily
indicate malfunction of the auto light switch.
• 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.
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.
• Accurate readings are also impossible indoors, especially inside ferroconcrete structures. This is because the metal framework of such structures
picks up magnetism from appliances, etc.
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60 to 70 minutes
(Display Sleep)
6 or 7 days
(Function Sleep)
Display
l
Elapsed Time in
Dark
1. Press B to enter the Digital Compass Mode.
2. Hold down A until x1x appears on the
display, which indicates the setting screen.
• At this time, the magnetic north pointer
flashes at the 12 o’clock position to indicate
that the watch is ready to calibrate the first
direction.
3. Place the watch on a level surface facing any direction you want, and
press B to calibrate the first direction.
• xxx is shown on the display while calibration is being performed. x2x
appears in the upper part of the display, and the magnetic north pointer
flashes at the 6 o’clock position when calibration of the first direction is
complete. This means that the watch is ready for calibration of the
second direction.
4. Rotate the watch 180 degrees.
5. Press B again to calibrate the second direction.
8
Operation Guide 2872
Calibrating the Barometric Pressure Sensor
To perform northerly calibration
To calibrate the pressure sensor
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Changing the barometric pressure units automatically restarts display of the
barometric pressure indicators.
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Changing the Barometric Pressure and Temperature Units
Important!
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.
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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 B to start the calibration operation.
• xxx is shown on the display while calibration is being performed. When
calibration is complete, the Digital Compass Mode screen (with 0°
indicated as the angle value) appears.
• If xxx appears and then changes to Err (error) on the calibration screen,
it means that there is something wrong with the sensor. Err will disappear
after about one second. Press A to return to the Digital Compass Mode
screen, and then try performing the calibration operation again. If Err
keeps appearing, contact your original dealer or nearest authorized CASIO
distributor to have the watch checked.
The pressure sensor of this watch is calibrated at the factory before shipment
and further adjustment is normally not required. If you notice serious errors in
the barometric pressure readings produced by the watch, you can calibrate
the sensor to correct the errors.
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1. While in the Digital Compass Mode, hold
down A until x1x appears on the display,
which indicates the setting screen.
2. Press C to start the northerly calibration
procedure.
• At this time, -N- (north) appears on the
display.
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• xxx is shown on the display while calibration is being performed. When
calibration is complete, the Digital Compass Mode screen (showing the
angle value) appears.
• If xxx appears and then changes to Err (error) on the calibration screen,
it means that there is something wrong with the sensor. Err will disappear
after about one second. Press A to return to the Digital Compass Mode
screen, and then try performing the calibration operation again. If Err
keeps appearing, contact your original dealer or nearest authorized CASIO
distributor to have the watch checked.
To change the altitude unit
1. Press D to enter the Altimeter Mode.
2. Hold down A until OFF (flashing) appears or until the display goes blank.
This is the setting screen.
• If the display goes blank, it means there is a reference altitude value.
Release A and wait for four or five seconds until the value appears.
Pressure
Sensor
Calibration
°C / °F
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Temperature
Sensor
Calibration
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To change the barometric pressure and temperature units
1. Press E to enter the Barometer/
Thermometer Mode.
2. Hold down A until OFF appears or until the
display goes blank. This is the setting screen.
• If the display goes blank, it means there is
calibration value. Release A. Wait for four
or five seconds and the value will appear.
3. Press C to move the flashing in the sequence
shown below.
1. Press E to enter the Barometer/
Thermometer Mode.
2. Hold down A until OFF appears or until the
display goes blank. This is the setting screen.
• If the display goes blank, it means there is
calibration value. Release A. Wait for four
or five seconds and the value will appear.
3. Press C to move the flashing to the
barometric pressure calibration status in the
center of the display.
• At this time, OFF or the barometric
pressure value should be flashing on the
display.
4. Press D (+) or B (–) to change the displayed
barometric pressure by 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.
3. Press C to move the flashing to the altitude
unit setting.
4. Use D to select the unit you want (m or ft).
5. Press A to return to the Altimeter Mode
screen.
• Performing the above procedure causes
altitude values stored in memory also to be
converted to the unit you select.
hPa/inHg
4. Use C to move the flashing to the unit setting you want to change
(°C/°F or hPa/inHg).
5. Press D to select the unit you want.
6. Press A to return to the Barometer/Thermometer Mode screen.
Calibrating the Temperature Sensor
The temperature sensor of this watch is calibrated at the factory before
shipment, and further adjustment is normally not required. If you notice
serious errors in the temperature readings produced by the watch, you can
calibrate the sensor to correct the errors.
Important!
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.
• 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.
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To calibrate the temperature sensor
1. Press E to enter the Barometer/
Thermometer Mode.
2. Hold down A until OFF appears or until the
display goes blank. This is the setting screen.
• If the display goes blank, it means there is
calibration value. Release A. Wait for four
or five seconds and the value will appear.
3. Press D (+) or B (–) to change the displayed
temperature by 0.1°C (or 0.2°F).
• Pressing B and D at the same time
returns to the factory calibration (OFF).
4. Press A to return to the Barometer/
Thermometer Mode screen.
9