Casio 3148, MO0811-EB User Manual
MO0811-EB
Operation Guide 3148
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out
of your purchase, be sure to read this manual carefully.
Applications
The built-in sensors of this watch measure barometric pressure, temperature
and altitude. Measured values are then shown on the display. Such features
make this watch useful when hiking, mountain climbing, or when engaging in
other such outdoor activities.
Keep the watch exposed to bright light
Bright light
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• The watch continues to operate, even when it is not exposed to light.
Leaving the watch in the dark can cause the battery to run down, which will
cause some watch functions to be disabled. If the battery goes dead, you
will have to re-configure watch settings after recharging. To ensure normal
watch operation, be sure to keep it exposed to light as much as possible.
Battery charges in the light. Battery discharges in the dark.
Solar cell
(Converts light to
electrical power.)
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Solar cell
Charge
Rechargeable battery
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Bright light
The electricity generated by the solar cell of the
watch is stored by a built-in battery. Leaving or
using the watch where it is not exposed to light
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causes the battery to run down. Make sure the
watch is exposed to light as much as possible.
• When you are not wearing the watch on your
wrist, position the face so it is pointed at a
source of bright light.
• You should try to keep the watch outside of
your sleeve as much as possible. Charging is
reduced significantly if the face is covered only
partially.
Electrical
energy
All
LEVEL 1
functions
LEVEL 2
enabled
LEVEL 3
LEVEL 4
charge
Dis-
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
Some
functions
disabled
• The actual level at which some functions are disabled depends on the
watch model.
• Frequent display illumination can run down the battery quickly and require
charging. The following guidelines give an idea of the charging time
required to recover from a single illumination operation.
Approximately five minutes exposure to bright sunlight coming in through
a window
Approximately 50 minutes exposure to indoor fluorescent lighting
• Be sure to read “Power Supply” for important information you need to
know when exposing the watch to bright light.
If the display of the watch is blank...
If the display of the watch is blank, it means that the watch’s Power Saving
function has turned off the display to conserve power.
• See “Power Saving” for more information.
• The measurement functions built into this watch are not intended for
taking measurements that require professional or industrial precision.
Values produced by this watch should be considered as reasonable
representations only.
• CASIO COMPUTER CO., LTD. assumes no responsibility for any loss,
or any claims by third parties that may arise through the use of this
watch.
Warning!
About This Manual
(Light)
• 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.
World Time Mode
▲
▲
Stopwatch Mode
Barometer/
Thermometer Mode
Countdown
Timer Mode
▲
▲
Press D.
Alarm Mode
▲
Timekeeping
Use the Timekeeping Mode to set and view the current time and date.
• In the Timekeeping Mode, you can use the buttons shown in the illustration
to display the timekeeping display you want.
• Pressing the B button once will display the current time in the city you last
viewed in the World Time Mode.
• Holding down the B button for about five seconds will swap the World
Time City and your current Home Time City.
• To swap the cities back again, hold down the B button for about five
seconds again.
You can press the C button to go directly from the Timekeeping Mode to the
•
Altimeter Mode. To go to the Altimeter Mode from the Barometer/
Thermometer, World Time, Stopwatch, Countdown Timer, Alarm, or Data
Recall Mode, first enter the Timekeeping Mode and then press the
Timekeeping Mode
Press C.
Altimeter Mode
▲
C
button.
▲
Data Recall Mode
Press D.
▲
TYO Time
Day of week
City you last viewed in the
World Time Mode
B
▲
Time in city
you last viewed
in the World
Time Mode
▲
TYO Time
Time in city
you last
viewed in the
World Time
Mode
Minutes
TYO Time
Release B.
SecondsHour :
▲
Hold down B for
five seconds.
Release B.
▲
B
Time in city you last viewed
in the World Time Mode
Hold down B for
▲
five seconds.
UTC Time
▲
1
Operation Guide 3148
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 A until the city code starts to flash,
which indicates the setting screen.
2. Use E and B 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 E and/
or B to change it as described below.
Screen
ON
5. Press A to exit the setting screen.
Note
• You also need to enter the Timekeeping Mode in order to configure the
following settings.
Power saving on/off (“To turn Power Saving on and off”)
Temperature, barometric pressure, and altitude units (“To select the
temperature, barometric pressure, and altitude units”)
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.
12/24-Hour
DST
Format
Altitude Unit
To do this:
Change the city code
Toggle between Daylight Saving
ON) and Standard Time
Time (
(OFF).
Toggle between 12-hour (
and 24-hour (
Reset the seconds to
Change the hour or minutes
Change the year, month, or day
Temperature
Unit
) timekeeping.
24H
Seconds
12H
00
Minutes
Hour
Powe r
Saving
Do this:
Use E (east) and
B(west).
Press E.
Press E.
)
Press E.
Use E (+) and B (–).
Day
Year
Month
To change the Daylight Saving Time (summer time) setting
DST indicator
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4. When the setting you want is selected, press A to exit the setting screen.
• The DST indicator appears to indicate that Daylight Saving Time is turned on.
1. In the Timekeeping Mode, hold down A until
the city code starts to flash, which indicates
the setting screen.
2. Press D and the DST setting screen appears.
3. Use E to cycle through the DST settings in
the sequence shown below.
DST off (
OFF
) DST on (ON)
Altimeter
The watch’s altimeter uses a pressure sensor to detect current air pressure,
which is then used to estimate the current altitude based on ISA (International
Standard Atmosphere) preset values. You can specify a reference altitude,
which the watch will use to calculate your current altitude based on the value
you specify. Altimeter functions also include storage of measurement readings
in memory.
Important!
• This watch estimates altitude based on air pressure. This means that
altitude readings for the same location may vary if air pressure changes.
• The semiconductor pressure sensor used by the watch for altitude readings
is also affected by temperature. When taking altitude readings, make sure
the watch is not subjected to temperature changes.
• To avoid the effect of sudden temperature changes during readings, keep
the watch on your wrist in direct contact with your skin.
• Do not rely upon this watch for altitude readings or perform button
operations while sky diving, hang gliding, or paragliding, while riding a
gyrocopter, glider, or any other aircraft, or while engaging in any other
activity where there is the chance of sudden altitude changes.
• Do not use this watch for taking altitude readings in applications that
demand professional or industrial level precision.
• Remember that the air inside of a commercial aircraft is pressurized.
Because of this, the readings produced by this watch will not match the
altitude readings announced or indicated the flight crew.
How the Altimeter Measures Altitude
The altimeter can measure altitude based on its own preset values, or a
reference altitude specified by you.
When you measure altitude based on preset values
Data produced by the watch’s barometric pressure sensor is converted to
approximate altitude based on ISA (International Standard Atmosphere)
conversion values stored in watch memory.
When you measure altitude using a reference altitude specified by you
After you specify a reference altitude, the watch will use that value to convert
the current barometric pressure reading to altitude.
• When mountain climbing, you can specify a
reference value in accordance with a marker
along the way or altitude information from a
map. After that, altitude readings produced
by the watch will be more accurate than they
would without a reference altitude.
Displaying Your Current Altitude
You can use the procedure described in this section to display your current
altitude. If you leave the watch in the Altimeter Mode, it will update the
displayed altitude value regularly, and indicate reading-to-reading changes in
a window in the upper left of the display.
You can select either of the following two altitude measurement intervals.
0'05": Readings at five-second intervals for one hour
2'00": Readings at five-second intervals for the first three minutes followed
by two-minute intervals for 10 hours
• For information about configuring settings for the altitude reading interval
and duration, see “To specify the altitude reading interval”.
Important!
• The procedure below simply displays a value indicating your current
altitude, without recording it in watch memory. For information about
recording altitude readings in watch memory, see “Saving Altitude Readings
in Memory”.
A
400
B
To view your current altitude
Altitude change since
Altimeter Mode stopwatch
measurement started
Altitude graph
Current altitude
Altimeter Mode
stopwatch
elapsed time
Notes
• Normally, displayed altitude values are based on the watch’s preset
conversion values. You also can specify a reference altitude, if you want.
See “Specifying a Reference Altitude”.
• Altitude is displayed in units of 5 meters (20 feet).
• The measurement range for altitude is –700 to 10,000 meters ( –2,300 to
32,800 feet).
• An altitude reading may be displayed be a negative value in cases where
there is a reference altitude value specified or because of certain
atmospheric conditions.
• The displayed altitude value changes to
altitude reading falls outside the measurement range. The altitude value will
be displayed again as soon as the altitude reading is within the allowable
range.
• You can select either meters (m) or feet (ft) as the measurement unit for
displayed altitude value.
• During altitude measurements, the watch may not be able to update its
timekeeping display contents normally. Correct timekeeping is maintained
internally, however.
1. In the Timekeeping Mode, use the C button
to enter the Altimeter Mode.
• The watch will start altitude measurement
and display the result.
• It can take up to four or five seconds for the
first altitude reading to appear.
2. If you leave the watch in the Altimeter Mode,
the current altitude value and the altitude
change value will be updated according to the
altitude reading interval.
•
If you want to restart the operation at any
point, press C.
3. To stop taking altitude readings, press D to
exit the Altimeter Mode.
xxxx meters (or feet) if an
2
Operation Guide 3148
Altitude graph Altitude change indicator
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• In the Altimeter Mode, press the A button to toggle between the altitude
graph and the altitude change indicator. The altitude change indicator
shows the relative change between the latest altitude reading and the one
before it.
• Nothing is displayed for the altitude change indicator when the current
altitude reading is outside the watch’s altitude measurement range (–700 to
10,000 meters/–2300 to 32,800 feet).
Altitude change
indicator
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A
▲
▲
A
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More than +20m
+15m
+10m
+5m
±0m
–5m
–10m
–15m
Less than –20m
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To specify the altitude reading interval
1. In the Altimeter Mode, hold down A for about
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Altitude measurement
interval
Saving Altitude Readings in Memory
The following describes the different types of records the watch creates for
altitude readings.
• You can take manual altitude readings, which are stored in memory along
with the date (year, month, day) of the reading. There is enough memory to
hold up to 20 altitude records (readings).
• The Altimeter Mode has a stopwatch (which is independent of the watch’s
Stopwatch Mode) that you can use to time your climbs. While the Altimeter
Mode stopwatch is running, the watch takes altitude readings automatically
(without storing them in memory). Each time you reset the Altimeter Mode
stopwatch to all zeros, the highest altitude, lowest altitude, cumulative
ascent, and cumulative descent achieved during the last Altimeter Mode
stopwatch session are stored in a “current stopwatch session record”.
• A separate “historical record” keeps track of the highest altitude, lowest
altitude, cumulative ascent, and cumulative descend of all past Altimeter
Mode stopwatch sessions.
two seconds until either OFF or the current
reference altitude value starts to flash. This is
the setting screen.
2. Press D to display the current altitude
reading interval setting.
• This will cause either 0'05" or 2'00" to flash
on the display.
3. Press A to toggle the setting between 0'05"
and 2'00".
• 0'05": Readings at five-second intervals for
one hour
• 2'00": Readings at five-second intervals for
the first three minutes followed by
4. Press A to exit the setting screen.
two-minute intervals for 10 hours
To take a manual altitude reading
1. Press C to enter the Altimeter Mode.
2. Hold down C for about one second until REC flashes on the display.
• At this time the watch will beep and the current altitude reading will be
saved along with the current date (year, month, day) and time.
3. REC will stop flashing and the watch will return to the Altimeter Mode
automatically after data save is complete.
• Memory can hold up to 20 altitude records. Storing a new reading while
there already are 20 in memory will delete the oldest record to make room
for the new reading.
To take altitude readings using the Altimeter Mode stopwatch
1. In the Timekeeping Mode, use the C button to enter the Altimeter Mode.
• The watch will start altitude measurement automatically. Note that
readings are not saved as altitude records.
2. Press the E button to start the Altimeter Mode stopwatch.
• While an Altimeter Mode stopwatch operation is in progress, the display
shows the elapsed time, current altitude, and the change in altitude
since the start of the stopwatch operation.
3. After you are finished using the Altimeter Mode Stopwatch, reset it to all
zeros.
• While an Altimeter Mode stopwatch operation is in progress, you can toggle
between the altitude graph and the altitude change indicator by pressing
the A button. The altitude change indicator graphically shows how the
current altitude reading differs from the previous reading. The type of
indicator that appears depends on the relative size of the altitude change.
Current Stopwatch Session Record
The current stopwatch session record contains the data described below. The
contents of this record are retained until you start a new Altimeter Mode
stopwatch measurement session.
Data
High Altitude
(MAX)
Low Altitude
(MIN)
Total Ascent
(ASC)
Total Descent
DSC)
(
• The maximum total ascent and total descent value is 99,995 meters
(or 99,980 feet). Each value reverts to zero after the maximum is reached.
How current Altimeter Mode stopwatch session record data is updated
Note
• When you press E to start a new Altimeter Mode stopwatch session, the
watch will clear data that is already stored in the current stopwatch session
record.
• The watch takes altitude readings and calculates data as described below,
and updates the current stopwatch session record accordingly. Note that
measurement and saves depend on whether or not the watch is in the
Altimeter Mode.
• In the Altimeter Mode
Altitude Measurement
• Outside the Altimeter Mode
Readings are taken and session data is updated every two minutes.
Historical Record
The historical record keeps track of high altitude, low altitude, total ascent, and
total descent values across multiple Altimeter Mode stopwatch sessions. The
contents of this record are updated continually while an Altimeter Mode
stopwatch operation is in progress.
How the historical record is updated
The watch performs the following operations continually while an Altimeter
Mode stopwatch operation is in progress.
Data
High Altitude
Low Altitude
Total Ascent
Total Descent
• See “Clearing the Historical Record” for information about clearing the
historical record, which restarts all data values from zero.
Other Altimeter Mode Features
This section explains other features and settings that are available in the
Altimeter Mode. Note that all of the information in this section applies to all
types of Altimeter Mode measurements, unless specifically indicated
otherwise.
Specifying a Reference Altitude
After you specify a reference altitude, the watch adjusts its air-pressure-toaltitude conversion calculation accordingly. The altitude measurements
produced by this watch are subject to error caused by changes in air
pressure. Because of this, we recommend that you update the reference
altitude whenever one is available during your climb.
Highest altitude reached during the current Altimeter Mode
stopwatch session.
Lowest altitude reached during the current Altimeter Mode
stopwatch session.
Total cumulative ascent during the current Altimeter Mode
stopwatch session.
Total cumulative descent during the current Altimeter
Mode stopwatch session.
Interval
0'05"
2'00"
First 3 minutes
Updated every 5
seconds
Updated every 5
seconds
The historical record value is compared with the current
reading and the greater of the two is recorded in the
historical record.
The historical record value is compared with the current
reading, and the lesser of the two is recorded in the
historical record.
The current Altimeter Mode stopwatch session value is
added to the historical record value.
Description
After 3 minutes
Updated every 5 seconds
Updated every 2 minutes
Update Operation
3
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