MO1105-EC
Operation Guide 3157
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.
About This Manual
• Depending on the model of your watch, display text
appears either as dark figures on a light background or
light figures on a dark background. 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.
(Light)
Applications
The built-in sensors of this watch measure direction and temperature. Measured
values are then shown on the display. Such features make this watch useful when
hiking, mountain climbing, or when engaging in other such outdoor activities.
Warning!
• The measurement functions built into this watch are not intended for use in taking
measurements that require professional or industrial precision. Values produced
by this watch should be considered as reasonably accurate 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.
(Light)
• 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.
General Guide
Stopwatch Mode
World Time Mode
• The illustration below shows which buttons you need to press to navigate between
modes.
• In any mode (except when a setting screen is on the display), press B to illuminate
the display.
• You can enter the Digital Compass/Thermometer Mode from the Timekeeping Mode
by pressing D. To enter from another mode, first use C to enter the Timekeeping
Mode, and then press D.
Digital Compass/
Thermometer Mode
Countdown Timer
Mode
Timekeeping Mode
Alarm Mode
Press C.
Press D.
Press C.
Timekeeping
Use the Timekeeping Mode to set and view the current
time and date.
Daylight SavingTime (DST) Setting
Month – Day
Day of week
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.
Read This BeforeYou 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 toggle the Timekeeping Mode time between DST and StandardTime
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
On/Off status
2. Press C once and the DST setting screen appears.
3. Press D to toggle between Daylight Saving Time (ON
displayed) and Standard Time (OFF displayed).
4. Press A to exit the setting screen.
Seconds
•
The DST indicator appears to indicate that Daylight
Saving Time is turned on.
Hour : Minutes
To set the time and date
1. In the Timekeeping Mode, hold down A until the city code starts to flash, which
indicates the setting screen.
2. Use D and B to select the city code you want.
DST indicator
• 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 C to move the flashing in the sequence shown below to select the other
settings.
Digital Compass/Thermometer
You can take direction readings and temperature readings in the Digital Compass/
Thermometer Mode.
Direction readings are taken by the watch’s built-in magnetic bearing sensor and
displayed as one of 16 directions. A temperature sensor is used for temperature
readings.
12/24-Hour
City Code
Second
DST
Hour
Format
• See “Digital Compass” for more information about the digital compass.
• See “Thermometer” for more information about the thermometer.
Temperature
Unit
Minute
Day
Month
Year
To enter and exit the Digital Compass/Thermometer Mode
1. While in the Timekeeping Mode, press D to enter the
• The following steps explain how to configure timekeeping settings only.
4. When the timekeeping setting you want to change is flashing, use D and/or B to
change it as described below.
12 o’clock position
Digital Compass/Thermometer Mode.
• The watch will start to take direction and temperature
readings. After about two seconds, the direction that
the 12 o’clock position of the watch is facing will be
indicated and the current temperature reading will
appear on the display.
Current time
Screen
To do this:
Change the city code
Do this:
Use D (east) and B
(west).
• Direction readings will be taken each second for about
10 seconds, and then stop automatically.
• Temperature readings will be taken every two
seconds for about 10 seconds, and then stop
automatically.
Toggle between Daylight Saving Time Press D.
(
) and Standard Time (
).
During readings
About two
Toggle between 12-hour (
24-hour (
24H
) and Press D.
12H
L
seconds
) timekeeping.
• To perform direction and temperature readings for
another 10 seconds, press D again.
Reset the seconds to
00
Press D.
2. Press C to return to the Timekeeping Mode.
• For information about using the digital compass, see “To
take a direction reading”.
• For information about using the thermometer, see “To
take a temperature reading”.
Change the hour or minute
Change the year
Use D (+) and B (–).
Use D (+) and B (–).
Change the month or day
Thermometer
The watch takes temperature readings automatically whenever you enter the Digital
Compass/Thermometer Mode. In addition, you can take readings manually by
performing the procedure below.
• You can calibrate the temperature sensor if you think readings are wrong for some
reason.
5. Press A to exit the setting screen.
• For details about configuring temperature display settings, see “To specify the
temperature display unit”.
• See “Daylight Saving Time (DST) Setting” below for details about the DST setting.
• You can select either Celsius (°C) or Fahrenheit (°F) as the temperature unit.
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Operation Guide 3157
World Time
World Time displays the current time in 48 cities (29 time
• If you want to cancel bearing sensor correction, press D in step 5 instead of C.
Timekeeping
Mode time
zones) around the world.
This will return to the screen in step 2. From there you can press A to exit the
calibration screen.
• If the current time shown for a city is wrong, check your
Home City time settings and make the necessary
changes.
• All of the operations in this section are performed in the
World Time Mode, which you enter by pressing C.
City code
• The indicator will go around the display up to four times, if you do not stop it by
pressing C. After the fourth time, the watch will exit the calibration screen
automatically.
To perform magnetic declination correction
To view the time in another city
In the World Time Mode, use D (east) to scroll through
city codes (time zones).
• For full information on city codes, see the “City Code
Table”.
1. In the Digital Compass/Thermometer Mode, hold down
Magnetic
declination
angle value
Magnetic
declination
angle direction
A until the indicator at the 12 o’clock position starts to
flash. This is the calibration screen.
2. Press C.
• The magnetic declination angle and magnetic
declination angle direction will flash on the display.
3. Use D (+) and B (–) to change the magnetic
declination angle and magnetic declination angle
direction settings.
Current time in the zone
of the selected city code
To toggle a city code time between Standard Time and Daylight Saving Time
1. In the World Time Mode, use D (east) to display the
DST indicator
city code (time zone) whose Standard Time/Daylight
Saving Time setting you want to change.
2. Hold down A to toggle between Daylight Saving Time
(DST indicator displayed) and Standard Time (DST
indicator not displayed).
• The DST indicator appears on the display whenever you
display a city code for which Daylight Saving Time is
turned on.
• Note that the DST/Standard Time setting affects only the
currently displayed city code. Other city codes are not
affected.
• You can select a value within the range of 90° W to 90° E with these settings.
• The following explains magnetic declination angle direction settings.
0 OFF: No magnetic declination correction performed. The magnetic
declination angle with this setting is 0°.
E: When magnetic north is to the east (east declination)
W: When magnetic north is to the west (west declination)
• You can turn off (0 OFF) magnetic declination correction (which effectively makes
the magnetic declination angle: 0°) by pressing D and B at the same time.
• The illustration, 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.
4. When the setting is the way you want, press A to exit the setting screen.
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.
Stopwatch
The stopwatch lets you measure elapsed time, split times,
Current time
and two finishes.
• To set a map and find your current location
• The display range of the stopwatch is 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.
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 set a map and find your current location
Minutes
Seconds
1. With the watch on your wrist, position it so the face is
North indicated
on the map
• All of the operations in this section are performed in the
Stopwatch Mode, which you enter by pressing C.
horizontal.
1/100 second
2. In the Timekeeping Mode, press D to take a compass
reading.
To measure times with the stopwatch
Elapsed Time
• 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
D
JD
JD
JD
JA
Start
Stop
Re-start
Stop
Clear
as indicated by the watch.
• If the watch is configured to indicate magnetic north,
Current
location
N
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.
Split Time
D
Start
JA
Split
(SPL displayed)
JA
Split release
JD
Stop
JA
Clear
N
Two Finishes
D
North indicated by
north pointer
4. Determine your location as you check the geographic
contours around you.
JA
JD
JA
JA
Start
Split
Stop
Split release
Clear
First runner
finishes.
Display time of
first runner.
Second runner
finishes.
Display time of
second runner.
To find the bearing to an objective
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.
Countdown Timer
Objective
You can set the countdown timer within a range of one
minute to 24 hours. An alarm sounds when the countdown
reaches zero.
• You also can select auto-repeat, which automatically
restarts the countdown from the original value you set
whenever zero is reached.
• All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
C.
Current
location
Current time
3. With the watch on your wrist, position it so the face is
horizontal.
4. In the Timekeeping Mode, press D to take a compass
reading.
12 o’clock
position
• 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.
Hours
Minutes
Seconds
To configure countdown start time and auto-repeat settings
1. While the countdown start time is on the display in the
• This will position the map relative to your current location, so the bearing to your
objective is straight ahead of you.
Questions & Answers
Question: What causes incorrect direction readings?
Answer:
• 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.
Countdown Timer Mode, hold down A until the hour
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, and select the setting you want to change.
Start Time
(Hours)
Start Time
(Minutes)
Auto-Repeat
On/Off
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.
3. Perform the following operations, depending on which
setting is currently selected on the display.
• While the start time setting is flashing, use D (+) and
B (–) to change it.
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.
Auto-repeat on indicator
0:00
• Set
to specify 24 hours.
• While the auto-repeat on/off setting (0N or 0FF) is flashing on the display, press
D to toggle auto-repeat on (0N) and off (0FF).
4. Press A to exit the setting screen.
• The auto-repeat on indicator ( ) is displayed on the Countdown Timer Mode
screen while this function is turned on.
• Frequent use of auto-repeat and the alarm can run down battery power.
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Operation Guide 3157
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.
To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.
• When the end of the countdown is reached and auto-repeat is turned off, the alarm
sounds for 10 seconds or until you stop it by pressing any button. The countdown
time is automatically reset to its starting value after the alarm stops.
• When auto-repeat is turned on, the countdown will restart automatically without
pausing when it reaches zero. The alarm sounds to signal when the countdown
reaches zero.
Auto Return Feature
• The watch will return to the Timekeeping Mode automatically if you do not perform
any operation for about two or three minutes while in the Digital Compass/
Thermometer Mode or Alarm Mode.
• If you leave a screen with flashing digits on the display without performing any
operation for two or three minutes, the watch saves any settings you have made up
to that point and exits the setting screen automatically.
• The countdown timer measurement operation continues even if you exit the
Countdown Timer Mode.
• To stop a countdown operation completely, first pause it (by pressing D), and then
press A. This returns the countdown time to its starting value.
Button Operation Tone
The button operation tone sounds any time you press one of the watch’s buttons.You
can turn the button operation tone on or off as desired.
• Even if you turn off the button operation tone, the alarm, hourly time signal, and
Countdown Timer Mode alarm all operate normally.
Alarms
The Alarm Mode gives you a choice of four one-time
Current time
alarms and one snooze alarm.
Alarm number
Also use the Alarm Mode to turn the hourly time signal
(SIG) on and off.
• There are five alarms numbered AL1through AL4,
and SNZ.You can configure SNZ as a snooze alarm
only. Alarms AL1through AL4 can be used as one-
time alarms only.
To turn the button operation tone on and off
In any mode (except when a setting screen is on the
Mute indicator
display), hold down C to toggle the button operation tone
on ( not displayed) and off ( displayed).
• Since the C button also is the mode change button,
holding it down to turn the button operation on or off also
causes the watch’s current mode to change.
• 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
• The
indicator is displayed in all modes when the
button operation tone is turned off.
Alarm Mode, which you enter by pressing C.
Alarm time
(Hour : Minutes)
Data and Setting Scrolling
To set an alarm time
The B and D buttons are used in various modes and setting screens 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.
1. In the Alarm Mode, use D to scroll through the alarm
screens until the one whose time you want to set is
displayed.
D
Sensor Error and Low Battery Displays
AL1
AL2
AL3
Subjecting the watch to strong impact can damage the sensor or cause internal
connection problems. These conditions will cause
(error) to appear on the
display, indicating that sensor operation is disabled.
Sensor operation also is disabled whenever
(battery) is on the display, which
SIG
SNZ
AL4
Alarm on indicator
indicates insufficient battery power or voltage due to a low battery or a cold
environment.
2. Hold down A until the hour setting of the alarm time start to flash, which indicates
the setting screen.
• If an error occurs or the battery goes low during sensor operation,
or
will
appear in the upper right of the display for about 10 seconds, and then change to
• 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 tone sounds at the preset time for 10 seconds, regardless of the mode the
watch is in. In the case of the snooze alarm, the alarm operation is performed a total
of seven times, every five minutes, until you turn the alarm off.
• Alarm and hourly time signal operations are performed in accordance with the
Timekeeping Mode time.
• If an error occurs or the battery goes low during bearing sensor correction,
will appear in the upper right of the display for about one second, and then the
calibration screen will appear. Try performing calibration again.
or
• If an error occurs or the battery goes low during temperature sensor calibration,
• To stop the alarm tone after it starts to sound, press any button.
• Performing any one of the following operations during a 5-minute interval between
snooze alarms cancels the current snooze alarm operation.
Displaying the Timekeeping Mode setting screen
or
will appear on the display for about one second. Next, xxx will flash for the
temperature value in the center of the display.
This indicates that temperature sensor calibration is not possible. Press A to exit
the calibration screen, and then try performing temperature sensor calibration again.
Displaying the SNZ setting screen
• If the
message appears frequently, it could mean the sensor is malfunctioning.
To test the alarm
In the Alarm Mode, hold down D to sound the alarm.
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.
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 is selected, press A to toggle it
on and off.
Timekeeping
• Resetting the seconds to 00 while the current count is in the range of 30 to 59
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to 00 without changing the minutes.
: Indicates alarm is on.
: Indicates snooze alarm is on.
: Indicates Hourly Time Signal is on.
• With the 12-hour format, the P (PM) indicator appears on the display for times in the
range of noon to 11:59 p.m. and no indicator appears for times in the range of
midnight to 11:59 a.m.
• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
any indicator.
• The alarm on indicator (
), snooze on indicator (
), and hourly time
signal on indicator ( ) are displayed on all modes.
• If any alarm is on, the alarm on indicator is shown on the display in all modes.
• The year can be set in the range of 2000 to 2099.
Illumination
• 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 after you have the watch’s battery replaced.
This watch has an EL (electro-luminescent) panel that
causes the entire display to glow for easy reading in the
dark.
• The electro-luminescent panel that provides illumination
loses power after very long use.
• Illumination may be hard to see when viewed under
direct sunlight.
• 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.
• The times for the Timekeeping Mode and all the city codes of the World Time Mode
are calculated in accordance with each city’s UTC offset.
• The UTC offset is a value that indicates the time difference between a reference
point in Greenwich, England and the time zone where a city is located.
• The letters UTC is the abbreviation for Coordinated Universal Time, which is the
world-wide scientific standard of timekeeping. It is based upon carefully maintained
atomic (cesium) clocks that keep time accurately to within microseconds. Leap
seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s
rotation.
• Illumination turns off automatically whenever an alarm
sounds.
• Frequent use of illumination runs down the battery.
To turn on illumination
In any mode (except when a setting screen is on the display), press B to illuminate
the display for about one second.
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Operation Guide 3157
City Code Table
City
City
UTC
Offset
–11.0
–10.0
–09.0
Code
PPG
HNL
ANC
YVR
LAX
YEA
DEN
MEX
CHI
Pago Pago
Honolulu
Anchorage
Vancouver
Los Angeles
Edmonton
Denver
Mexico City
Chicago
Miami
–08.0
–07.0
–06.0
MIA
YTO
NYC
SCL
YHZ
YYT
RIO
Toronto
–05.0
New York
Santiago
Halifax
St. Johns
Rio De Janeiro
Praia
–04.0
–03.5
–03.0
–01.0
RAI
LIS
LON
MAD
PAR
ROM
BER
STO
ATH
CAI
JRS
MOW
JED
THR
DXB
KBL
KHI
Lisbon
London
Madrid
Paris
Rome
Berlin
Stockholm
Athens
Cairo
Jerusalem
Moscow
Jeddah
Tehran
Dubai
Kabul
Karachi
Delhi
Dhaka
Yangon
Bangkok
Singapore
Hong Kong
Beijing
Taipei
+00.0
+01.0
+02.0
+03.0
+03.5
+04.0
+04.5
+05.0
+05.5
+06.0
+06.5
+07.0
DEL
DAC
RGN
BKK
SIN
HKG
BJS
+08.0
TPE
SEL
TYO
ADL
GUM
SYD
NOU
WLG
Seoul
Tokyo
Adelaide
Guam
Sydney
Noumea
Wellington
+09.0
+09.5
+10.0
+11.0
+12.0
• Based on data as of March 2008.
• UTC offsets and the use of summer
time are subject to change in the
country where they are used.
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