Casio 2471 User Manual
USER’S GUIDE 2471
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out
of your purchase, be sure to carefully read this manual and keep it on hand
for later reference when necessary.
Expose the watch to bright light to charge its battery before using it.
You can use this watch even as its battery is being charged by exposure to
bright light.
••
• Be sure to read “Battery” of this manual for important information
••
you need to know when exposing the watch to bright light.
Applications
The built-in sensors of this watch measure direction, altitude, barometric
pressure, 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.
• The measurement functions built into this watch are not intended for
taking measurements that require professional or industrial precision.
Values produced by this watch should be considered as reasonable
representations only.
• When engaging in mountain climbing or other activities in which losing
your way can create a dangerous or life-threatening situation, always be
sure to use a second compass to confirm direction readings.
• CASIO COMPUTER CO., LTD. assumes no responsibility for any loss,
or any claims by third parties that may arise through the use of this
watch.
Warning!
If the display of the watch is blank...
• The initial factory default setting is Power Saving on.
• The watch recovers from the sleep state if you move it to a well-lit area
you press any button, or if you angle the watch towards your face for
reading.
It can take up to five seconds for the display to turn on.
*
• See “Power Saving Function” for more information.
About This Manual
(Light)
If the SLEEP indicator is on the display (either
flashing or steady), it means that the display is
blank because the watch's Power Saving function
has shut it to conserve power. Power Saving
automatically turns off the display and puts the
watch into a sleep state whenever your watch is
left in an area where it is dark for a certain
period.
• 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.
, if
*
General Guide
• The illustration below shows which buttons you need to press to navigate
between modes.
Data Recall Mode
Timekeeping Mode
Press D.
▲
▲
D
Alarm Mode
D
▲
▲
Timekeeping
PM indicator
Day of week
Year
Hour : Minutes
3. When the setting you want to change is flashing, use E to change it as
described below.
Seconds
Month – Day
Seconds
Power Saving
on/off
Setting
Seconds
Hour, Minutes
12/24-Hour
format
Year, Month,
Day
Day of week
Power Saving
on/off
4. Press A to exit the setting screen.
Use the Timekeeping Mode to set and view the
current time and date.
To set the time and date
1. In the Timekeeping Mode, hold down A until
the seconds start to flash, which indicates the
setting screen.
2. Press D to move the flashing in the
sequence shown below to select other
settings.
Minutes
Month
Day
Button Operations
Screen
Hour
Day of
week
Press E to reset the seconds to
Use E (+) to change the setting.
Use E to toggle between 12-hour (12H) and
24-hour (24H) timekeeping.
Use E (+) to change the setting.
Use E (+) to change the setting.
Press E to toggle the Power Saving on
(On) and off (OFF).
12/24-Hour
Format
Year
0000
00.
0000
• You can use buttons B, C, and E to directly enter a sensor mode from
the Timekeeping Mode or from another sensor mode. To get to a sensor
mode from the Data Recall or Alarm Mode, you must go to the Timekeeping
Mode first.
Sensor Modes
Press B.
▲
Digital Compass Mode
Press C.
Thermometer Mode
▲
Barometer/
Press D.
Press E.
Altimeter Mode
▲
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, Barometer/Thermometer, or Altimeter Mode,
press B to enter the Digital Compass Mode.
• At this time, the watch immediately starts a Digital Compass operation.
After about two seconds, letters appear on the display to indicate the
direction that the 12 o’clock position of the watch is pointing.
2. Press D to return to the Timekeeping Mode.
To take a direction reading
Magnetic north pointer
12 o’clock position
Direction
Timekeeping Mode time
Direction value (in degrees)
WSW
SW
NNW
NW
W
N
W
W
W
S
S
S
E
S
E
E
S
S
SE
1. Enter the Digital Compass Mode.
2. Place the watch on a flat surface or (if you are
wearing the watch), make sure that your wrist
is horizontal (in relation to the horizon).
3. Point the 12 o’clock position of the watch in
the direction you want to measure.
4. Press B to start a Digital Compass
measurement operation.
• After about two seconds, the direction that the
12 o’clock position of the watch is pointing
appears on the display.
• Also, four pointers appear to indicate magnetic
north, south, east, and west.
• After the first reading is obtained, the watch
0°
N
N
continues to take direction readings
N
E
automatically each second, for up to 20
NE
E
seconds.
N
E
E
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USER’S GUIDE 2471
• The COMP indicator flashes on the display while a measurement is in
progress.
• The direction value that appears on the display represents the clockwise
angle formed between magnetic north (which is 0 degrees) and the
displayed direction.
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 direction 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.
• Digital Compass operation is automatically interrupted whenever an alarm
(Daily Alarm or Hourly Time Signal) sounds. If this happens, start the Digital
Compass operation again from the beginning.
• 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.
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
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
Barometric pressure graph
(unit: 1hPa (mb)/0.05 inHg)
Temperature
Barometric pressure
• The displayed barometric pressure value changes toxxxx hPa/mb (or
inHg) if a measured barometric pressure falls outside the range of 260 hPa/
mb to 1100 hPa/mb (7.65 inHg to 32.45 inHg). The barometric pressure
value will be displayed again as soon as the measured barometric pressure
is within the allowable range.
• 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.
• Some countries refer to the barometric pressure unit hecto-pascal (hPa) as
millibars (mb). It really makes no difference, because 1hPa = 1mb. In this
manual, we use hPa/mb or hPa (mb).
• See “About Barometric and Temperature Measurements” 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. The
barometric pressure graph shows the barometric readings for the past 26
hours. The flashing point on the right of the display is the point for the newest
measurement. Note that pressure graph readings are relative to the newest
measurement point. One dot above the newest point is plus 1hPa(mb)/
0.05 inHg, while one dot below is minus 1hPa(mb)/0.05 inHg. The following
shows how to interpret the data that appears on the barometric pressure
graph.
Pressing C in the Timekeeping Mode or in any
of the other sensor modes enters the Barometer/
Thermometer Mode. The watch automatically
starts barometric pressure and temperature
measurement, and displays the results.
• Barometric pressure is displayed in units of
1hPa/mb (or 0.05 inHg).
• Temperature is displayed in units of 0.1°C (or
0.2°F).
xx. x °C (or °F) if a
A rising graph generally means improving 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 (260 hPa/mb to 1,100 hPa/mb or
7.65 inHg to 32.45 inHg)
• Sensor malfunction
• Dead batteries
About Barometric and Temperature Measurements
• Barometric pressure and temperature measurement operations are
performed as soon as you enter the Barometer/Thermometer Mode. After
that, barometric pressure and temperature measurements are taken every
five seconds for the first three minutes.
• The BARO indicator flashes on the display while a measurement is in
progress.
• The barometer automatically takes measurements every two hours (starting
from midnight), regardless of what mode you are in. The results of these
measurements are used for the barometric pressure graph.
• You can also perform a barometric pressure and temperature measurement
at any time by pressing C in the Barometer/Thermometer Mode.
Barometer and Thermometer Precautions
• The pressure sensor built into this watch measures changes in air
pressure, which you can then apply to your own weather predictions. It is
not intended for use as a precision instrument in official weather prediction
or reporting applications.
• Sudden temperature changes can affect pressure sensor readings.
• Temperature measurements are affected by your body temperature (while
you are wearing the watch), direct sunlight, and moisture. To achieve a
more accurate temperature measurement, remove the watch from your
wrist, place it in a well ventilated location out of direct sunlight, and wipe off
all moisture from the case. It takes approximately 20 to 30 minutes for the
case of the watch to reach the actual surrounding temperature.
• You can change the measured barometric pressure unit between hectopascals/millibars (hPa/mb) and inchesHg (inHg). See “Changing the
Barometric Pressure and Temperature Units” for details.
• You can change the measured temperature value displayed by this watch
between Celsius (°C) and Fahrenheit (°F). See “Changing the Barometric
Pressure and Temperature Units”.
Not visible on
the display.
Altimeter
A built-in altimeter uses a pressure sensor to detect the current air pressure,
which is then used to estimate the current altitude. The watch is preprogrammed with ISA (International Standard Atmosphere) preset values,
which are used to convert air pressure readings to altitude values. If you
preset a reference altitude, the watch will also calculate the current relative
altitude based on your preset value. Altimeter functions also include data
storage memory and an altitude alarm.
Important!
• This watch estimates altitude based on air pressure. This means that
altitude readings for the same location may vary if air pressure changes.
• This watch employs a semiconductor pressure sensor, which is affected by
temperature changes. When taking altitude measurements, be sure to do
so while ensuring that the watch is not exposed to temperature changes.
• To avoid the effect of sudden temperature changes on measurement, wear
the watch so it is in direct contact with your wrist during measurement.
• Do not rely upon this watch for altitude measurements or perform button
operations while engaging in sports where there are sudden altitude
changes, while sky diving, hang gliding, or paragliding, or while riding a
gyrocopter, glider, or any other aircraft.
• Do not use this watch for measuring altitude in applications that demand
professional or industrial level precision.
• Remember that the air inside of a commercial aircraft is pressurized.
Because of this, the readings produced by this watch will not match the
altitude readings announced or indicated the flight crew.
How the Altimeter Works
With the Preset Values (No Reference Altitude)
• The watch measures the air pressure at your current location and uses the
built-in ISA values to convert it to the equivalent altitude.
A falling graph generally means deteriorating weather.
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USER’S GUIDE 2471
With a Reference Altitude
• If you set a reference altitude, the watch
uses that value when calculating altitude
based on air pressure.
• To determine the height of a tall building,
set the reference altitude to 0 on the
ground floor. Note, however, that you may
not be able to get a good reading if the
building is pressurized or air-conditioned.
• When mountain climbing, you can set the
reference value in accordance with a
marker along the way or altitude
information from a map. After you do this,
the altitude readings produced by the
watch will be more accurate than they
would without a reference altitude.
A
400
B
To take an altitude reading
Pressing E in the Timekeeping Mode or in any of the other sensor modes
enters the Altimeter Mode. The watch automatically starts altitude
measurement, and displays the results.
Altitude graph (current altitude flashing) (unit: 10m/40 ft.)
Altitude
About one
second later
▲
Timekeeping Mode time
• See “About Altitude Measurements” for important information.
• Altitude is displayed in units of 5 meters (20 feet).
• The measurement range for altitude is –700 to 10,000 meters (–2,300 to
32,800 feet).
• The measured altitude may be a negative value in cases where there is a
reference altitude value set or because of certain atmospheric conditions.
• The displayed altitude value changes to
measured altitude falls outside the measurement range. The altitude value
will be displayed again as soon as the measured altitude is within the
allowable range.
• You can change the unit of measurement for the displayed altitude values
between meters (m) and feet (ft). See “To change the Altitude Units”.
About Altitude Measurements
There are two types of altitude measurements: those for displayed data
(Altimeter Mode measurements) and those for memory data (Memory
measurements).
Altimeter Mode measurement
You can perform Altimeter Mode measurements in the Altimeter Mode only,
and an altimeter measurement operation starts whenever you enter the
Altimeter Mode.
During the first three minutes after entering the Altimeter Mode, ALTI flashes
on the display and measurements are taken every five seconds. After that,
the interval between measurements depends on whether you are using the
Short Mode (1-minute intervals) or the Long Mode (2-minute intervals).
• Long Mode is the default setting. See “Memory measurement” for
information about the Short Mode and Long Mode.
• If you do not perform any operation while in the Altimeter Mode, the watch
automatically returns to the Timekeeping Mode after four or five hours in
the Short Mode, or after nine or 10 hours in the Long Mode.
Memory measurement
The memory measurement operation stores the following data in watch
memory. Note that each time you perform a memory measurement operation,
it creates a new set of records, replacing the set of records currently in
memory. Memory measurement continues to be performed (indicated by the
REC indicator flashing on the display) even if you change to another mode.
Measurement start time, date, and altitude: 1 record
Automatic altitude readings and time, at fixed interval: Up to 39 records
Measurement end time, date, and altitude: 1 record
The watch also calculates the following values using measured data and
maintains one record for each in memory.
Relative altitude (altitude difference between start point and current altitude or
measurement end altitude)
Measurement time
Maximum altitude (highest measured altitude in memory)
Total ascent (total of ascents (A + B))
Cumulative total ascent (total of all measured altitude values in memory)
Maximum altitude
Start point
A
xxxxx meters (or feet) if a
Stop point
B
C
• Starting a new measurement automatically clears relative altitude,
measurement time, maximum altitude, and total ascent values currently in
memory.
• Starting a new measurement does not clear cumulative total ascent. This
value continues to increase until it reaches 99,995 meters (327,983 feet).
After that, it reverts to 0 and starts again.
• The interval between memory measurements depends on whether the
Short Mode or the Long Mode is selected.
Short Mode: 5-minute interval
Long Mode: 15-minute interval
• Relative altitude, cumulative total ascent, and maximum altitude data is
calculated at regular intervals, depending on the Long Mode/Short Mode
setting. In both modes, calculations are performed every five seconds for the
first three minutes. After that, calculations are performed every minute in the
Short Mode and every two minutes in the Long Mode.
To select the Short Mode or Long Mode
1. In the Altimeter Mode, hold down A until the
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display clears. After four or five seconds,
OFF or the current reference altitude
either
value (if set) starts to flash, which indicates
the setting screen.
•
OFF indicates no reference altitude.
• Note that you will not be able to change the
Short/Long Mode setting if a memory
measurement operation is in progress.
2. Press D twice.
• This causes either 0:05 (Short Mode) or
0:15 (Long Mode) to appear, which
indicates the current mode setting.
3. Each press of E toggles between the Short
Mode and Long Mode.
4. Press A to exit the setting screen.
To perform memory measurement
Hold down E for about one second until REC
flashes, which indicates that memory
measurement has started.
• Memory measurement stops automatically
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• While a memory measurement operation is in progress, press A to toggle
between the Standard Altitude screen and the Relative Altitude screen.
Standard Altitude
Screen
Altitude
Note
• REC flashes on the display while a memory measurement operation is in
• Starting the memory measurement operation deletes any altimeter data
• You can recall data in memory using the Data Recall Mode.
Setting a Reference Altitude
After you set a reference altitude, the watch adjusts its air-pressure-to-altitude
conversion calculation accordingly. The altitude measurements produced by
this watch are subject to error caused by changes in air pressure. Because of
this, we recommend that you update the reference altitude whenever one is
available during your climb.
Timekeeping Mode time
progress.
(except for cumulative total ascent data) currently in memory (and its graph)
and replaces it with the new data. Note that you cannot delete memory
contents manually.
after there are 41 records accumulated in
memory. When you want to stop a memory
measurement operation manually, hold down
E for about one second until REC disappears.
Relative Altitude
Screen
Relative altitude
Press A.
▲
▲
REL indicator
Measurement time
To set a reference altitude
1. In the Altimeter Mode, hold down A until the
display clears. After four or five seconds,
OFF or the current reference altitude
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either
value (if set) starts to flash, which indicates
the setting screen.
2. Press E (+) or B (–) to change the current
reference altitude value by 5 meters (or 20 feet).
• You can set the reference altitude within the
range of –10,000 to 10,000 meters (–32,800
to 32,800 feet).
3
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