Congratulations upon your selection of this CASIO watch. To get the most out
of your purchase, be sure to read this manual carefully.
Applications
The built-in sensors of this watch measure direction, barometric pressure,
temperature and altitude. Measured values are then shown on the display.
Such features make this watch useful when hiking, mountain climbing, or
when engaging in other such outdoor activities.
• The measurement functions built into this watch are not intended for
taking measurements that require professional or industrial precision.
Values produced by this watch should be considered as reasonable
representations only.
• The Moon phase indicator and tide graph data that appear on the
display of this watch are not intended for navigation purposes. Always
use proper instruments and resources to obtain data for navigation
purposes.
• This watch is not an instrument for calculating low tide and high tide
times. The tide graph of this watch is intended to provide a reasonable
approximation of tidal movements only.
• When engaging in mountain climbing or other activities in which losing
your way can create a dangerous or life-threatening situation, always be
sure to use a second compass to confirm direction readings.
• Note that CASIO COMPUTER CO., LTD. assumes no responsibility for
any damage or loss suffered by you or any third party arising through
the use of this product or its malfunction.
Keep the watch exposed to bright light
Bright light
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Solar cell
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Warning!
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
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.
• The watch continues to operate, even when it is not exposed to light.
Leaving the watch in the dark can cause the battery to run down, which will
result in some watch functions being disabled. If the battery goes dead, you
will have to re-configure watch settings after recharging. To ensure normal
watch operation, be sure to keep it exposed to light as much as possible.
Battery charges in the light.Battery discharges in the dark.
Solar cell
(Converts light to
electrical power.)
• 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.
About This Manual
Module 3135
Bright light
LEVEL 1
LEVEL 2
LEVEL 3
Charge
LEVEL 4
Rechargeable battery
(Light)
Electrical
energy
All
functions
enabled
• Depending on the model of your watch, display
text appears either as dark figures on a light
background (Module 3135), or light figures on a
dark background (Module 3206). All sample
displays in this manual are shown using dark
figures on a light background.
• 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.
Dis-
charge
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
Some
functions
disabled
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
▲
Tide/Moon Data
Mode
▲
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Data Recall
Mode
▲
Timekeeping Mode
Press
D.
▲
▲
Module 3206
• You can use buttons A, B, and C to enter a sensor mode directly from
the Timekeeping Mode or from another sensor mode. To enter a sensor
mode from the Tide/Moon Data, Countdown Timer, Stopwatch, World Time,
Alarm, or Data Recall Mode, first enter the Timekeeping Mode and then
press the applicable button.
Sensor Modes
Press C.
▲
▲
Digital
Compass Mode
Press B.
Thermometer Mode
Press D.
▲
Barometer/
Press A.
▲
Altimeter Mode
1
Operation Guide 3135 3206
Timekeeping
Use the Timekeeping Mode to set and view the current time and date.
• In the Timekeeping Mode, an indicator moves along the ring around the
display as seconds advance.
• The tide graph shows tidal movements for the current date in accordance
with the current time as kept in the Timekeeping Mode.
• The Moon phase indicator shows the current Moon phase in accordance
with the current date as kept in the Timekeeping Mode.
• In the Timekeeping Mode, you can press E to toggle the display contents
as shown below.
Day of the Week Screen
Day of week
PM indicator
Press E.
▲
Hour :
Minute
Month – Day
Read This Before You Set the Time and Date!
This watch is preset with a number of city codes, each of which represents
the time zone where that city is located. When setting the time, it is important
that you first select the correct city code for your Home City (the city where
you normally use the watch). If your location is not included in the preset city
codes, select the preset city code that is in the same time zone as your
location.
• Note that all of the times for the World Time Mode city codes are displayed
in accordance with the time and date settings you configure in the
Timekeeping Mode.
To set the time and date
1. In the Timekeeping Mode, hold down E until the city code starts to flash,
which indicates the setting screen.
2. Use A and C to select the city code you want.
• Make sure you select your Home City code before changing any other
setting.
• For full information on city codes, see the “City Code Table”.
3. Press D to move the flashing in the sequence shown below to select the
other settings.
City Code
Barometric
Pressure Unit
• The following steps explain how to configure timekeeping settings only.
4. When the timekeeping setting you want to change is flashing, use A and/
or C to change it as described below.
DST
Screen
5. Press E 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”)
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour
from Standard Time. Remember that not all countries or even local areas use
Daylight Saving Time.
Second
12/24-Hour
Format
Altitude Unit
Second
Temperature
Unit
To do this:
Change the city code
Toggle between Daylight Saving
Time (
) and Standard Time
(
).
Toggle between 12-hour (
and 24-hour (
24H
Reset the seconds to
12H
) timekeeping.
00
Change the hour or minute
Change the year
Change the month or day
Barometric Pressure
Graph Screen
Barometric
pressure
graph
▲
Hour :
Minute
Month – Day
Minute
Hour
Powe r
Saving
Do this:
Use A (east) and
C(west).
Press A.
Press A.
)
Press A
Use A (+) and C (–).
Day
.
Second
Year
Month
To change the Daylight Saving Time (summer time) setting
DST indicator
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1. In the Timekeeping Mode, hold down E until
the city code starts to flash, which indicates
the setting screen.
2. Press D and the DST setting screen appears.
3. Use A to cycle through the DST settings in
the sequence shown below.
DST off ( )DST on ( )
4. When the setting you want is selected, press
E to exit the setting screen.
• The DST indicator appears to indicate that
Daylight Saving Time is turned on.
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.
• See “Using the Digital Compass While Mountain Climbing or Hiking” for
some real-life examples of how to use this feature.
To enter and exit the Digital Compass Mode
12 o’clock position
Two seconds
Current time
▲
To take a direction reading
270°
W
S
W
SW
W
S
180°
W
N
W
W
S
S
North pointer
NNW
NW
E
S
E
SSE
SE
12 o’clock position
Direction
indicator
Angle value (in degrees)
• While the watch is taking compass readings, it displays a direction angle, a
direction indicator, and four direction pointers, all of which change dynamically
when the watch is moved. The direction angle, direction indicator and
direction pointers all disappear from the display after the compass reading
operation is complete. Use the direction indicators imprinted on the bezel to
record the indicated direction. For details, see “Using the Digital Compass
While Mountain Climbing or Hiking”.
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 and the direction indicator 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.
1. While in the Timekeeping Mode or in any of
the other sensor modes, press C to enter the
Digital Compass Mode.
• At this time, the watch will start 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.
•
The direction reading on the display is
updated each second for up to 20 seconds,
after which measurement stops automatically.
2. Press D to return to the Timekeeping Mode.
1. While the watch is in the Digital Compass
Mode, place it on a flat surface, or if you are
wearing the watch, make sure that your wrist
is horizontal (in relation to the horizon).
2. Point the 12 o’clock position of the watch in
the direction you want to measure.
3. Press C 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
0°
N
N
E
90°
north, south, east, and west.
• After the first reading is obtained, the watch
N
continues to take direction readings
E
NE
automatically each second, for up to 20
E
N
seconds.
E
2
Operation Guide 3135 3206
• 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 illumination is turned on (by pressing L).
The measurement operation resumes for its remaining duration after the
operation that caused it to pause is finished.
• The following table shows the meanings of each of the direction
abbreviations that appear on the display.
Direction
Meaning
N
E
S
W
• See “Digital Compass Precautions” for other important information about
taking direction readings.
Digital Compass Precautions
This watch features a built-in magnetic bearing sensor that detects terrestrial
magnetism. This means that nor th indicated by this watch is magnetic north,
which is somewhat different from true polar north. The magnetic north pole is
located in northern Canada, while the magnetic south pole is in southern
Australia. Note that the difference between magnetic north and true north as
measured with all magnetic compasses tends to be greater as one gets
closer to either of the magnetic poles. You also should remember that some
maps indicate true north (instead of magnetic north), and so you should make
allowances when using such maps with this watch.
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 also are impossible indoors, especially inside ferroconcrete structures. This is because the metal framework of such structures
picks up magnetism from appliances, etc.
Storage
• The precision of the bearing sensor may deteriorate if the watch becomes
magnetized. Because of this, you should be sure to store the watch away
from magnets or any other sources of strong magnetism, including:
permanent magnets (magnetic necklaces, etc.) and household appliances
(TVs, personal computers, washing machines, freezers, etc.)
• Whenever you suspect that the watch may have become magnetized,
perform one of the calibration procedures under “Calibrating the Bearing
Sensor”.
Calibrating the Bearing Sensor
You should calibrate the bearing sensor whenever you feel that the direction
readings being produced by the watch are off. There are three different
calibration methods available: magnetic declination correction, bidirectional
calibration, and northerly calibration.
• Magnetic Declination Correction
With magnetic declination correction, you input a magnetic declination
angle (difference between magnetic north and true north), which allows the
watch to indicate true north.
You can perform this procedure when the magnetic declination angle is
indicated on the map you are using.
Note that you can input the declination angle in degree units only, so you
may need to round off the value specified on the map. If your map indicates
the declination angle as 7.4°, you should input 7°. In the case of 7.6° input
8°, for 7.5° you can input 7° or 8°.
• Bidirectional Calibration and Northerly Calibration
Bidirectional calibration and northerly calibration calibrate the accuracy of
the direction sensor in relation to magnetic north.
Use bidirectional calibration when you want to take readings within an area
exposed to magnetic force. This type of calibration should be used if the
watch becomes magnetized for any reason. With northerly calibration, you
“teach” the watch which way is north (which you have to determine with
another compass or some other means).
Important!
• If you want to perform both bidirectional and northerly calibration, be sure
to perform bidirectional calibration first, and then perform northerly
calibration. This is necessary because bidirectional calibration cancels any
existing northerly calibration setting.
• 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.
North
East
South
West
Direction
NNE
ESE
SSW
WNW
Meaning
North-
northeast
East-
southeast
South-
southwest
West-
northwest
Direction
NE
SE
SW
NW
Meaning
Northeast
Southeast
Southwest
Northwest
Direction
ENE
SSE
WSW
NNW
Meaning
East-
northeast
South-
southeast
West-
southwest
North-
northwest
To perform magnetic declination correction
1. In the Digital Compass Mode, hold down E
Magnetic declination
angle direction
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Magnetic
declination
angle value
E: When magnetic north is to the east (east declination)
W: When magnetic north is to the west (west declination)
• You can turn off (OFF) magnetic declination correction (which effectively
makes the magnetic declination angle: 0°) by pressing A and C at the
same time.
• The illustration above, for example, shows the value you should input
and the direction setting you should select when the map shows a
magnetic declination of 1° West.
3. When the setting is the way you want, press E to exit the setting screen.
Precautions about bidirectional calibration
• You can use any two opposing directions for bidirectional calibration. You
must, however, make sure that they are 180 degrees opposite each other.
Remember that if you perform the procedure incorrectly, you will get wrong
bearing sensor readings.
• 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.
for about two seconds until the magnetic
declination angle and magnetic declination
angle direction values start to flash on the
display. This is the setting screen.
2. Use A (+) and C (–) to change the magnetic
declination angle and magnetic declination
angle direction settings.
• You can select a value within the range of
W 90
° to E 90° with these settings.
• The following explains magnetic declination
angle direction settings.
OFF: No magnetic declination correction
performed. The magnetic declination
angle with this setting is 0°.
To perform bidirectional calibration
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3. Place the watch on a level surface facing any direction you want, and
press C to calibrate the first direction.
•
xxx is shown on the display while calibration is being performed. When
calibration is successful, the display will show
north pointer flashes at the 6 o’clock position. This means that the watch
is ready for calibration of the second direction.
4. Rotate the watch 180 degrees.
5. Press C again to calibrate the second direction.
•
xxx is shown on the display while calibration is being performed. When
calibration is successful, the display will show
Mode (showing the angle value) screen.
xxx appears and then changes to
• If
screen, it means that there is something wrong with the sensor. When
disappears after about one second, try performing the calibration
ERR
again. If
authorized CASIO distributor to have the watch checked.
keeps appearing, contact your original dealer or nearest
ERR
1. In the Digital Compass Mode, hold down E
for about two seconds until the magnetic
declination angle and magnetic declination
angle direction values start to flash on the
display. This is the setting screen.
2. Press D to display the bidirectional
calibration screen.
• At this time, the north pointer flashes at the
12 o’clock position to indicate that the watch
is ready to calibrate the first direction.
OK and x2x, and the
OK and the Digital Compass
(error) on the calibration
ERR
To perform northerly calibration
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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 C to start the calibration operation.
•
--- is shown on the display while calibration is being performed. When
calibration is successful, the display will show
Mode (with
• If
screen, it means that there is something wrong with the sensor. When
ERR
again. If
authorized CASIO distributor to have the watch checked.
0
--- appears and then changes to
° shown as the angle value).
disappears after about one second, try performing the calibration
keeps appearing, contact your original dealer or nearest
ERR
1. In the Digital Compass Mode, hold down E
for about two seconds until the magnetic
declination angle and magnetic declination
angle direction values start to flash on the
display. This is the setting screen.
2. Press D twice to display the northerly
calibration screen.
• At this time,
display.
-N- (north) appears on the
OK and the Digital Compass
(error) on the calibration
ERR
3
Operation Guide 3135 3206
Using the Digital Compass While Mountain Climbing or
Hiking
This section describes three real-life situations where you could use the
watch’s built-in digital compass.
• To set a map and find your current location
Having an idea of your current location is important when mountain
climbing or hiking. To do this, you need to “set the map”, which means to
align the map so the directions indicated on it are aligned with the actual
directions of your location. Basically what you are doing is aligning north on
the map with north as indicated by the watch.
• To find the bearing to an objective
• To determine the direction angle to an objective on a map and head in that
direction
To set a map and find your current location
North indicated
on the map
N
Current
location
N
North indicated by
north pointer
To find the bearing to an objective
N
Objective
Current
location
12 o’clock
N
position
• This will position the map relative to your current location, so the bearing to
your objective is straight ahead of you.
To determine the direction angle to an objective on a map and head
in that direction
N
Objective
Current
location
12 o’clock
N
position
• If you find it difficult to perform the above step while keeping everything
aligned, first move into the correct position (12 o’clock position of the
watch pointed at the objective) without worrying about the orientation of
the map. Next, perform step 1 again to set the map.
1. With the watch on your wrist, position it so the
face is horizontal.
2. In the Timekeeping, Digital Compass,
Barometer/Thermometer, or Altimeter Mode,
press C to take a compass reading.
• The reading will appear on the display after
about two seconds.
3. Rotate the map without moving the watch so
the northerly direction indicated on the map
matches north as indicated by the watch.
• If the watch is configured to indicate
magnetic north, align the map’s magnetic
north with the watch indication. If the watch
has been configured with a declination to
correct to true north, align the map’s true
north with the watch indication.
• This will position the map in accordance
with your current location.
4. Determine your location as you check the
geographic contours around you.
1. Take a compass reading and then set the map
so its northerly indication is aligned with north
as indicated by the watch, and determine your
current location.
• See “To set a map and find your current
location” for information about how to
perform the above step.
2. Set the map so the direction you want to travel
on the map is pointed straight in front of you.
3. With the watch on your wrist, position it so the
face is horizontal.
4. In the Timekeeping, Digital Compass,
Barometer/Thermometer, or Altimeter Mode,
press C to take a compass reading.
• The reading will appear on the display after
about two seconds.
5. Still holding the map in front of you, turn your
body until north as indicated by the watch and
the northerly direction on the map are aligned.
Note
• The following procedure is possible only with a
watch that has a rotary bezel.
1. Take a compass reading and then set the map
so its northerly indication is aligned with north
as indicated by the watch, and determine your
current location.
• See “To set a map and find your current
location” for information about how to
perform the above step.
2. As shown in the illustration to the left, change
your position so you (and the 12 o’clock
position of the watch) are pointed in the
direction of objective, while keeping the map
aligned with the readings being produced by
the watch.
12 o’clock
position
Direction angle of
current reading
4. Rotate the bezel so the “N” (North) indicator on the bezel is aligned with
the north indicator produced by the reading in step 3.
5. To advance to your objective proceed in the direction that 12 o’clock is
pointing.
Note
• When mountain climbing or hiking, conditions or geographic contours may
make it impossible for you to advance in a straight line. If this happens,
return to step 1 and save a new direction to the objective.
3. In the Timekeeping, Digital Compass,
Barometer/Thermometer, or Altimeter Mode,
press C to take a compass reading.
• The compass reading information (angle
value, direction indicator, and four pointers
based on the 12 o’clock position of the
watch) will appear on the display after about
two seconds.
North
pointer
• The compass reading information will
remain on the display for only about 20
seconds after you press C. After that it will
disappear. If you want to re-display the
compass reading information, press C
again to take another reading.
Barometer/Thermometer
This watch uses a pressure sensor to measure air pressure (barometric
pressure) and a temperature sensor to measure temperature.
• You can calibrate the pressure sensor and the temperature sensor if you
suspect that readings are incorrect.
To take barometric pressure and temperature readings
Barometric
pressure graph
Temperature
• The displayed barometric pressure value changes to
a measured barometric pressure falls outside the range of 260 hPa to
1100 hPa (7.65 inHg to 32.45 inHg). The barometric pressure value will
reappear as soon as the measured barometric pressure is within the
allowable range.
• Temperature is displayed in units of 0.1°C (or 0.2°F).
• 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 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 important 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 20 hours. The horizontal axis of the graph represents time, with each dot
standing for two hours. The rightmost dot represents the most recent reading.
The vertical axis of the graph represents barometric pressure, with each dot
standing for the relative difference between its reading and that of the dots
next to it. Each dot represents 1hPa.
The following shows how to interpret the data that appears on the barometric
pressure graph.
Pressure
differential
pointer
Barometric
pressure
A rising graph generally means improving weather.
A falling graph generally means deteriorating weather.
Pressing B in the Timekeeping Mode or in any
of other sensor modes enters the Barometer/
Thermometer Mode and starts barometric
pressure and temperature measurements
automatically .
• It can take up to four or five seconds for the
barometric pressure reading to appear after
you enter the Barometer/Thermometer Mode.
• Barometric pressure is displayed in units of
1hPa (or 0.05 inHg).
hPa (or inHg) if
xxxx
°C (or °F) if a
xxx.x
4
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