Congratulations upon your selection of this CASIO watch. To get the most out
of your purchase, be sure to read this manual carefully.
Applications
The built-in sensors of this watch measure direction, barometric pressure,
temperature and underwater depth. Measured values are then shown on the
display. Such features make this watch useful when hiking, mountain
climbing, skin diving, or snorkeling, or when engaging in other such outdoor
activities.
Keep the watch exposed to bright light
Bright Light
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Solar cell
••
• 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.
Solar cell
(Converts light to
electrical power.)
Charge
Rechargeable battery
• 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.
The electricity generated by the solar cell of the
watch is stored by a built-in battery. Leaving or
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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 only partially
covered.
Battery discharges in the dark.
Bright Light
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
Electrical
energy
All
functions
enabled
charge
Dis-
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
Some
functions
disabled
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 Function” 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.
• 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.
• This watch is intended for use up to skin diving and snorkeling. Never
use this watch while scuba diving.
• Never operate the buttons of the watch while underwater.
• 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 in order 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
▲
Countdown
Timer Mode
▲
World Time
Mode
Alarm Mode
▲
Depth Data
Recall Mode
▲
▲
Press D.
Receive Mode
▲
Timekeeping Mode
▲
▲
Pressing A, B, or C while in the Timekeeping Mode directly enters the
•
applicable sensor mode. If you want to go to a sensor mode from the Depth Data
Recall, Countdown Timer, Stopwatch, World Time, Alarm, or Receive Mode, go
to the Timekeeping Mode first, and then press one of the above buttons to enter
a sensor mode.
Press A.
▲
Digital
Compass Mode
▲
Sensor Modes
Press B.
Thermometer ModeDepth Gauge Mode
Press B.
▲
▲
Press A.
▲
Barometer/
Press C.
Press C.
▲
▲
▲
Press D.
Press C.
1
Operation Guide 3047
Radio-controlled Atomic Timekeeping
This watch receives a time calibration signal and updates its time setting
accordingly.
• This watch is designed to pick up the time calibration signal transmitted in
Germany (Mainflingen), England (Rugby), and the United States (Fort
Collins) and the time calibration signals transmitted in Japan.
Current Time Setting
This watch adjusts its time setting automatically in accordance with a time
calibration signal. You also can perform a manual procedure to set the time
and date, when necessary.
• The first thing you should do after purchasing this watch is to specify your
Home City (the city where you normally will use the watch). For more
information, see “To specify your Home City” below.
• When using the watch outside the areas covered by the time signal
transmitters, you will have to adjust the current time setting manually as
required. See
settings.
•
The U.S. time calibration signal can be picked up by the watch while in North America.
* The term “North America” in this manual refers to the area that consists of
Canada, the continental United States, and Mexico.
To specify your Home City
ATH : Athens
TYO, SEL :Tokyo, Seoul
NYC : New York, Detroit, Miami, Boston, Montreal
CHI :
DEN : Denver, El Paso, Edmonton, Culiacan
LAX : Los Angeles, San Francisco, Las Vegas, Seattle/Tacoma,
3. Press E to exit the setting screen.
• Normally, your watch should show the correct time as soon as you select
your Home City code. If it does not, it should adjust automatically after the
next auto receive operation (in the middle of the night). You also can
perform manual receive or you can set the time manually.
• The watch will receive the time calibration signal automatically from the
applicable transmitter (in the middle of the night) and update its settings
accordingly. For information about the relationship between city codes and
transmitters, see “Transmitters”.
• See the maps under “Reception Ranges” for information about the
reception ranges of the watch.
• You can disable time signal reception, if you want. See “To turn auto receive
on and off” for more information.
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration
signal: auto receive and manual receive.
• Auto Receive
With auto receive, the watch receives the time calibration signal automatically
up to six times a day. When any auto receive is successful, the remaining
auto receive operations are not performed. For more information, see “About
Auto Receive”.
• Manual Receive
Manual receive lets you start a time calibration receive operation with the press
of a button. For more information, see “To perform manual receive”.
Important!
• When getting ready to receive the time calibration signal, position the watch
as shown in the nearby illustration, with its 12 o’clock side facing towards a
window. Make sure there are no metal objects nearby.
• The watch should not be facing the wrong way.
• Proper signal reception can be difficult or even impossible under the
conditions listed below.
Inside or
among
buildings
“Timekeeping” for more information about manual time
1. In the Timekeeping Mode, hold down E until
the city code starts to flash, which indicates
the setting screen.
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Chicago, Houston, Dallas/Fort Worth, New Orleans, Winnipeg, Mexico
2. Press C (east) and D (west) to select the
city code you want to use as your Home City.
LON: London
City code
PAR , BER : Paris, Berlin, Milan, Rome,
Amsterdam, Hamburg, Frankfurt,
Vienna, Barcelona, Madrid
City
Vancouver, Tijuana
12 o’clock
or
Inside a
vehicle
Near
household
appliances,
office
equipment,
or a mobile
phone
Near a
construction
site, airport,
or other
sources of
electrical
noise
Near hightension
power lines
Among or
behind
mountains
• Signal reception normally is better at night than during the day.
• Time calibration signal reception takes from two to seven minutes, but in
some cases it can take as long as 14 minutes. Take care that you do not
perform any button operations or move the watch during this time.
• The time calibration signal the watch will attempt to pick up depends on its
current Home City code setting as shown below.
• Signal reception may not be possible at the distances noted below during
certain times of the year or day. Radio interference may also cause
problems with reception.
Mainflingen (Germany) or Rugby (England) transmitters: 500 kilometers
(310 miles)
Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310
miles)
• Even when the watch is within the reception range of the transmitter, signal
reception will be impossible if the signal is blocked by mountains or other
geological formations between the watch and signal source.
• Signal reception is affected by weather, atmospheric conditions, and
seasonal changes.
• See the information under “Signal Reception Troubleshooting” if you
experience problems with time calibration signal reception.
About Auto Receive
The watch receives the time calibration signal automatically up to six times a
day. When any auto receive is successful, the remaining auto receive
operations are not performed. The reception schedule (calibration times)
depends on your currently selected Home City, and whether standard time or
Daylight Saving Time is selected for your Home City.
Your Home City
LON Standard Time
Daylight Saving Time
PAR , Standard Time
BER
Daylight Saving Time
ATH Standard Time
Daylight Saving Time
TYO, Standard Time
SEL
NYC, Standard Time and
CHI,
Daylight Saving Time
DEN,
LAX
Note
• When a calibration time is reached, the watch will receive the calibration
signal only if it is in either the Timekeeping Mode or World Time Mode.
Reception is not performed if a calibration time is reached while you are
configuring settings.
• Auto receive of the calibration signal is designed to be performed early in
the morning, while you sleep (provided that the Timekeeping Mode time is
set correctly). Before going to bed for the night, remove the watch from your
wrist, and put it in a location where it can receive the signal easily.
123456
1:00 am 2:00 am 3:00 am 4:00 am 5:00 am Midnight
2:00 am 3:00 am 4:00 am 5:00 am Midnight 1:00 am
2:00 am 3:00 am 4:00 am 5:00 am Midnight 1:00 am
3:00 am 4:00 am 5:00 am Midnight 1:00 am 2:00 am
3:00 am 4:00 am 5:00 am Midnight 1:00 am 2:00 am
4:00 am 5:00 am Midnight 1:00 am 2:00 am 3:00 am
Midnight 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
Midnight 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
500
kilometers
Fukushima
1,000
kilometers
Auto Receive Start Times
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
Fort
Collins
next day
next day
next day next day
next day next day
next day next day next day
2
Operation Guide 3047
• The watch receives the calibration signal for two to seven minutes everyday
when the time in the Timekeeping Mode reaches each of the calibration
times. Do not perform any button operation within seven minutes before or
after any one of the calibration times. Doing so can interfere with correct
calibration.
• Remember that reception of the calibration signal depends on the current
time in the Timekeeping Mode. The receive operation will be performed
whenever the display shows any one of the calibration times, regardless of
whether or not the displayed time actually is the correct time.
About the Receiving Indicator
The receiving indicator shows the strength of the calibration signal being
received. For best reception, be sure to keep the watch in a location where
signal strength is strongest.
The receiving indicator is displayed while an auto or manual receive operation
is in progress.
Receiving
indicator
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Weak
(Level 1)
• Even in an area where signal strength is strong, it takes about 10 seconds
for signal reception to stabilize enough for the receiving indicator to indicate
signal strength.
• Use the receiving indicator as a guide for checking signal strength and for
finding the best location for the watch during signal receive operations.
• Following reception of the time calibration signal and calibration of the
watch’s time setting, the Level 5 receiving indicator will remain on the
display in all modes. The Level 5 receiving indicator will not be displayed if
signal reception was unsuccessful or after you adjust the current time
setting manually.
• The Level 5 receiving indicator is displayed only when the watch is able to
receive both time and date data successfully. It does not appear when only
time data is received.
• The Level 5 receiving indicator indicates that at least one of the auto
calibration signal receive operations was successful. Note, however, that
the Level 5 receiving indicator disappears from the display each day when
the first auto receive operation of the day is performed.
Strong
(Level 5)
To perform manual receive
Receiving
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Receive
successful
Receive failed
If there was a previously
successful reception
1. Enter the Receive Mode.
2. Place the watch on a stable surface so its 12
o’clock side is facing towards a window.
3. Hold down C for about two seconds until
RC star ts to flash on the display.
• Time calibration signal reception takes from
two to seven minutes. Take care that you do not
perform any button operations or move the
watch during this time.
• If the receive operation is successful, the
reception date and time appear on the display,
along with the GET indicator.
The watch will enter the Receive Mode if you
press C or if you do not perform any button
operation for about one or two minutes.
• If the current reception fails but a previous
reception was successful, the display shows
the previous reception’s date and time, and the
ERR indicator. x:xx indicates that none of
the reception operations were successful.
The watch will enter the Receive Mode without
changing the time setting if you press C or if
you do not perform any button operation for
about three minutes.
Note
• To interrupt a receive operation and return to
the Receive Mode, press C.
To turn auto receive on and off
1. Enter the Receive Mode.
On/Off
2. In the Receive Mode, hold down E until the
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4. Press E to exit the setting screen.
• For information about city codes that support signal receive, see “To specify
your Home City”.
status
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current auto receive setting (
starts to flash. This is the setting screen.
• Note that the setting screen will not appear if
the currently selected Home City is one that
does not support time calibration reception.
3. Press C to toggle auto receive on (
OFF).
off (
ON or OFF)
ON) and
To check the latest signal reception results
Enter the Receive Mode.
• When receive is successful, the display shows
the time and date that receive was successful.
x:xx indicates that none of the reception
operations were successful.
• To return to the Timekeeping Mode, press D.
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal
reception.
What you should doProblemProbable Cause
Cannot perform
manual receive.
Auto receive is
turned on, but
the Level 5
receiving
indicator does
not appear on
the display.
Time setting is
incorrect
following signal
reception.
• For further information, see “Important!” under “Time Calibration Signal
Reception” and “Radio-controlled Atomic Timekeeping Precautions”.
• The watch is not in the
Timekeeping, World Time, or
Receive Mode.
• Your current Home City is not
one of the following: LON, PAR,
BER, AT H, TYO, SEL, NYC,
CHI, DEN, or LAX
• You changed the time setting
manually.
• The DST setting was changed
manually in the World Time
Mode.
You pressed a button while signal
•
receive was in progress.
•
Even if receive is successful, the
Level 5 receiving indicator
disappears from the display
each day when the first auto
receive operation of the day is
performed.
•
Time data (hour, minutes,
seconds) only was received
during the last receive operation.
The Level 5 receiving indicator
appears only when time data
and date data (year, month, day)
are both received.
•If the time is one hour off, the
DST setting may be incorrect.
•The Home City code setting is
not correct for the area where
you are using the watch.
• Enter the Timekeeping,
World Time, or Receive
Mode and try again.
• Select LON, PAR , BER,
ATH , TYO, SEL, NYC,
CHI, DEN, or LAX as
your Home City.
• Perform manual signal
receive or wait until the
next auto signal receive
operation is performed.
• Check to make sure the
watch is in a location
where it can receive the
signal.
•Change the DST setting
to Auto DST.
•Select the correct Home
City code.
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
1. While in the Timekeeping or Barometer/Thermometer Mode, press A to
enter the Digital Compass Mode.
• At this time, the watch starts a Digital Compass operation immediately.
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 D to return to the Timekeeping Mode.
If no reception was
successful
3
Operation Guide 3047
To take a direction reading
Magnetic north pointer
12 o’clock position
Direction
indicator
Angle value (in degrees)
NNW
NW
NW
W
W
W
S
W
SW
W
S
S
S
S
E
SSE
SE
• 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.
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 paused temporarily while
the watch is performing an alert operation (daily alarm, Hourly Time Signal,
countdown timer alarm) or while the watch illuminates the display (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
North
N
East
E
South
S
West
W
• See “Digital Compass Precautions” for other important information about
taking direction readings.
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 A 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.
0°
N
• After the first reading is obtained, the watch
N
N
continues to take direction readings
E
NE
automatically each second, for up to 20
E
N
seconds.
E
E
E
Direction
NNE
ESE
SSW
WNW
Meaning
northeast
southeast
southwest
northwest
North-
East-
South-
West-
Direction
NE
SE
SW
NW
Meaning
Northeast
Southeast
Southwest
Northwest
Direction
ENE
SSE
WSW
NNW
Meaning
East-
northeast
South-
southeast
West-
southwest
North-
northwest
Barometer/Thermometer
This watch uses a pressure sensor to measure air pressure (barometric
pressure) and a temperature sensor to measure temperature.
• You can calibrate the temperature sensor and the pressure sensor if you
suspect that readings are incorrect.
To take barometric pressure and temperature readings
Pressing B in the Timekeeping or Digital Compass Mode enters the
Barometer/Thermometer Mode and starts taking barometric pressure and
temperature measurements automatically.
History Graph and
Barometric
pressure
History graph
Barometric Pressure
Press E to
toggle between
screens.
▲
Temperature
• It can take up to four or five seconds for the barometric pressure reading to
appear after you enter the Barometer/Thermometer Mode.
• Barometric pressure is displayed in units of 1hPa (or 0.05 inHg).
• The displayed barometric pressure value changes to
a measured barometric pressure falls outside the range of 600 hPa to 1100
hPa (17.70 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).
Temperature and
Barometric Pressure
▲
hPa (or inHg) if
xxxx
• The displayed temperature value changes to
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 specify
barometric pressure and temperature 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.
In every mode except for the Depth Gauge Mode, your watch takes barometric
pressure readings every two hours (at the top of each even-numbered hour).
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 (flashing) represents the most
recent reading. The ver tical 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.
---. - °C (or °F) if a
A rising graph generally means improving weather.
A falling graph generally means deteriorating 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 (600 hPa/mb to 1,100 hPa/mb or
17.70 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 ±15 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 (600 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
inHg values
hPa values
Points to 3 o’clock for
differentials outside
the range of ±15 hPa/
±0.44 inHg.
Current pressure
less than most
recent measured
pressure
Pressure differential
examples in the
illustration are indicated
in 10 hPa/0.3 inHg
steps.
Not visible on
the display.
Barometric pressure
differential pointer
4
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