Casio 5242 Watch User Manual

MO1205-EA
Operation Guide 5242
ENGLISH
Congratulations upon your selection of this CASIO watch.
Applications
Built-in sensors are used to take direction, barometric pressure, temperature, and altitude readings, which
are displayed by the hands of the watch. 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 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 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.
E-1
About This Manual
Crown
Using the Crown
Operations are performed using the watch’s crown, and the four buttons
indicated by the letters A, B, C and L in this manual.
You can use the crown to perform a number of different operations, and to change the settings of the
watch.
Hands and Date Indicator
To lock the crown
z Hour Hand
x Minute Hand
c Second Hand
v Mode Hand (Indicates the day of the week in the Timekeeping Mode.)
b Day Indicator
30
This User’s Guide uses the numbers shown above to identify watch
hands and indicators.
Note that the product illustrations in this manual are intended for
reference only, and so the actual product may appear somewhat different
than depicted by an illustration.
To lock the crown, gently push in as you rotate it away from you. Lock the crown firmly
by rotating until its inner ring is no longer visible.
Outer ring
Important!
• You should normally have the crown locked during normal daily use. Leaving the crown unlocked
creates the risk of unintended operations or even damage due to impact.
To unlock the crown
Rotate the crown towards you until it is completely loosened. When the crown is
loosened completely, you will be able to see its inner ring as shown in the nearby
illustration.
Inner ring
E-2
E-3
To pull the crown out
After loosening the crown, pull it out.
• The watch will beep when you pull the crown out.
To push the crown in
Push the crown back in.
• The watch will beep when you push the crown back in.
To rotate the crown
Rotating the crown after you pull it out will move the watch’s hands. You also can
move the hands at high speed by performing the operation described below.
Note
If you do not perform any operation for about two or three minutes after pulling out the crown, crown
operations will become disabled automatically. If this happens, push the crown back in and then pull it
out again to re-enable crown operations.
To start high-speed hand movement
With the crown pulled out, rotate the crown more than once in the direction that you
want to move the hands. When you release the crown, the hands will start to move at
high speed.
To stop high-speed hand movement
Rotate the crown towards you or press any button.
Note
High-speed hand movement is available in the Timekeeping Mode, when setting a
time in the Alarm Mode, and when correcting day indicator settings.
E-4
E-5
Things to check before using the watch
3. Set the current time.
1. With the crown locked, hold down B for at least two seconds to enter the Timekeeping Mode.
Observe the movement of the c Second Hand.
Is the c Second Hand moving smoothly at one-second intervals?
NO
Is the c Second Hand jumping at two-second intervals
or is it stopped completely?
YES
• To set the time using a time calibration signal
See “To get ready for a receive operation” (page E-18).
• To set the time manually
See “Configuring Current Time and Date Settings Manually” (page E-31).
The watch is now ready for use.
• For details about the watch’s radio controlled timekeeping feature, see “Radio Controlled Atomic
Timekeeping” (page E-16).
The watch is charged. For details about
charging, see “Charging the Watch”
(page E-11).
YES
Power is low. Charge the watch by placing it in a
location where it is exposed to light. For details, see
“Charging the Watch” (page E-11).
NEXT
Go to step 2.
2. Check the Home City.
Use the procedure under “To configure Home City settings” (page E-27) to configure your Home City.
Important!
Proper time calibration signal reception depends on correct Home City, time, and date settings. Make
sure you configure these settings correctly.
E-6
E-7
Operation Guide 5242
Contents
E-27 Configuring Home City Settings
E-27 To configure Home City settings
E-29 To select Auto or Manual Standard Time/Daylight Saving Time Switching
E-2
About This Manual
E-3
Using the Crown
E-3
To lock the crown
E-3
To unlock the crown
E-4
To pull the crown out
E-4
To rotate the crown
E-4
To start high-speed hand movement
E-4
To stop high-speed hand movement
E-5
To push the crown in
E-6
E-31 Configuring Current Time and Date Settings Manually
E-31 To change the current time setting manually
E-33 To change the current date setting manually
E-35 Taking Direction Readings
E-35 To take a direction reading
E-37 To perform bidirectional calibration
E-38 To perform northerly calibration
E-40 To set a map
Things to check before using the watch
E-42 Taking Altitude Readings
E-44 To take an altitude reading
E-46 To calibrate the altitude sensor reading
E-11 Charging the Watch
E-15 To recover from the sleep state
E-51 Taking a barometric pressure reading
E-52 To take a barometric pressure reading
E-55 To show and hide barometric pressure differential
E-56 To calibrate the Barometric Pressure Sensor Reading
E-16 Radio Controlled Atomic Timekeeping
E-18 To get ready for a receive operation
E-20 To check the result of the latest receive operation
E-20 To perform Manual Receive
E-21 To turn auto receive on or off
E-58 Taking Temperature Readings
E-59 To take a temperature reading
E-60 To calibrate the temperature sensor reading
E-23 Mode Reference Guide
E-8
E-9
Charging the Watch
E-62 Specifying Altitude, Barometric Pressure, and Temperature Units
E-62 To specify altitude, barometric pressure, and temperature units
The face of the watch is a solar panel that generates power from light. The generated power charges a
built-in rechargeable battery, which powers watch operations. The watch charges whenever it is exposed
to light.
E-63 Using the Alarm
E-63 To change the alarm time setting
E-64 To turn the alarm on or off
E-64 To stop the alarm
Charging Guide
Whenever you are not wearing the
watch, be sure to leave it in a
location where it is exposed to light.
• Best charging performance is
achieved by exposing the watch to
light that is as strong as possible.
E-65 Using the Stopwatch
E-65 To perform elapsed time measurement
E-66 Adjusting Home Positions
E-67 To trigger auto hand home position adjustment manually
E-68 To adjust the Day Indicator home position
When wearing the watch, make sure
that its face is not blocked from light
by the sleeve of your clothing.
• The watch may enter a sleep state
(page E-15) if its face is blocked
by your sleeve even only partially.
E-69 Illumination
E-69 To turn on illumination manually
E-69 To change the illumination duration
E-71 To enable or disable the auto light switch
Warning!
Leaving the watch in bright light for charging can cause it to become quite hot. Take care when
handling the watch to avoid burn injury. The watch can become particularly hot when exposed to
the following conditions for long periods.
• On the dashboard of a car parked in direct sunlight
• Too close to an incandescent lamp
• Under direct sunlight
E-73 Troubleshooting
E-80 Specifications
E-10
E-11
Important!
• Keep the watch in an area normally exposed to bright light when storing it for long periods. This helps
to ensure that power does not run down.
• Storing the watch for long periods in an area where there is no light or wearing it in such a way that it is
blocked from exposure to light can cause power to run down. Make sure that the watch is exposed to
bright light whenever possible.
Power Levels
30
You can get an idea of the watch’s power level by observing the
movement of the c Second Hand in the Timekeeping Mode.
• If the c Second Hand is moving smoothly at one-second intervals,
power is at Level 1.
• If the c Second Hand is jumping at two-second intervals, power is at
Level 2, which is quite low. Expose the watch to light as soon as
possible so it can charge (Low battery alert).
Level Hand Movement
Function Status
1
Normal.
All functions enabled
2
c Second Hand jumps at two-second intervals.
b Day indicator changes to 1 at the time of normal
date changing.
Illumination, beeper, sensors, time calibration signal
reception, home position adjustment all disabled.
3
All hands stop at 12 o’clock.
b Day indicator changes to 1.
All functions disabled
• When power drops to Level 3, all functions will be disabled but the watch will continue to keep time
internally for about one week. If you recharge the battery sufficiently during this period, the hands will
move automatically to the correct setting and regular timekeeping will resume. After one week, all
settings (including timekeeping) will be cleared. Recharging the battery will reset all settings to their
initial factory defaults.
Power Recovery Mode
The watch is designed to go into a power recovery mode that temporarily disables functions whenever
power suddenly drops below a certain level due to overuse of sensors, illumination, and/or the alarm tone
over a short period. All watch operations are disabled in the power recovery mode.
The hands will move to the correct positions and the watch will resume normal operation after power
recovers (in about 15 minutes). Putting the watch in a location where it is exposed to light will help power
to recover sooner.
Jumps at two-second
intervals
E-12
E-13
Charging Times
Power Saving
Level Change *2
Exposure Level (Brightness)
Daily
Operation *1
Outdoor sunlight (50,000 lux)
8 minutes
Level 3
Level 2
3 hours
Level 1
Elapsed Time in Dark
Operation
60 to 70 minutes (second hand sleep)
• c Second Hand stopped at 12 o’clock.
• All other functions enabled.
6 or 7 days (function sleep)
• All functions, including timekeeping, disabled.
• All hands stopped at 12 o’clock.
• Only the b Day Indicator operates normally.
31 hours
Window sunlight (10,000 lux)
30 minutes
7 hours
113 hours
Window sunlight on cloudy day (5,000 lux)
48 minutes
11 hours
184 hours
8 hours
115 hours
–––
Indoor fluorescent lighting (500 lux)
Power Saving enters a sleep state automatically whenever the watch is left for a certain period in an area
where it is dark. The table below shows how watch functions are affected by Power Saving.
• There actually are two sleep state levels: “second hand sleep” and “function sleep”.
*1 Approximate exposure each day to generate power for normal daily operation.
*2 Approximate exposure to take power up one level.
• The above times are for reference only. Actual times depend on lighting conditions.
• For details about the operating time and daily operating conditions, see the “Power Supply” section of
the Specifications (page E-83).
• The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch is already in a sleep
state when 6:00 AM arrives, however, it will remain in the sleep state.
• The watch will not enter a sleep state while it is in the Stopwatch Mode.
To recover from the sleep state
Move the watch to a well-lit area, perform any button operation, perform a crown operation (pull-out,
rotate), or move your hand to an angle that causes an Auto Light operation.
E-14
E-15
Operation Guide 5242
Radio Controlled Atomic Timekeeping
Approximate Reception Ranges
UK and German Signals
This watch receives a time calibration signal and updates its time setting accordingly. However, when
using the watch outside of areas covered by time calibration signals, you will have to adjust the settings
manually as required. See “Configuring Current Time and Date Settings Manually” (page E-31) for more
information.
This section explains how the watch updates its time settings when the city code selected as the Home
City is in Japan, North America, Europe, or China, and is one that supports time calibration signal
reception.
If your Home City Code setting is this:
The watch can receive the signal from the transmitter
located here:
LON (LONDON), PAR (PARIS), ATH (ATHENS)
Anthorn (England), Mainflingen (Germany)
HKG (HONG KONG)
Shangqiu City (China)
TYO (TOKYO)
Fukushima (Japan), Fukuoka/Saga (Japan)
NYC (NEW YORK), CHI (CHICAGO),
DEN (DENVER), LAX (LOS ANGELES),
ANC (ANCHORAGE), HNL (HONOLULU)
Fort Collins, Colorado (United States)
Important!
• The areas covered by HNL (HONOLULU) and ANC (ANCHORAGE) are quite far from the calibration
signal transmitters, so certain conditions may cause reception problems.
North American Signal
Anthorn
2,000 miles
(3,000 kilometers)
500 kilometers
600 miles
(1,000 kilometers)
1,500 kilometers
Fort Collins
The Anthorn signal is receivable
within this area.
Mainflingen
Japanese Signals
Fukushima
Chinese Signal
500 kilometers
Changchun
500 kilometers
Beijing
Shangqiu
Shanghai
Chengdu
Hong Kong
Fukuoka/Saga
1,500 kilometers
1,000 kilometers
E-16
E-17
• Signal reception may not be possible at the distances noted below during certain times of the year or
day. Radio interference may also cause problems with reception.
– Mainflingen (Germany) or Anthorn (England) transmitters: 500 kilometers (310 miles)
– Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
– Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
– Shangqiu (China) transmitter: 500 kilometers (310 miles)
• As of December 2010, China does not use Daylight Saving Time (DST). If China does go to the Daylight
Saving Time system in the future, some functions of this watch may no longer operate correctly there.
• Using this watch in a country covered by a time calibration signal that is different from the countries it
supports may result in incorrect time indication due to local application of summer time, etc.
• When using this watch in an area where time calibration signal reception is not possible, you can adjust
the time and date manually.
To get ready for a receive operation
1. Place the watch in a location where signal reception is good.
12 o’clock
or
• Position the watch as shown in the nearby illustration,
with 12 o’clock pointed towards a window. Make sure
there are no metal objects nearby.
• Signal reception normally is better at night.
• The receive operation takes from three to eight minutes,
but in some cases it can take as long as 16 minutes.
Take care that you do not perform any button operation
or move the watch during this time.
• Signal reception may be difficult or even impossible under the conditions described below.
Inside or among
buildings
Inside a vehicle
Near household
appliances,
office
equipment, or a
mobile phone
Near a
construction
site, airport
Near hightension power
lines
Among
or behind
mountains
2. What you should do next depends on whether you are using Auto Receive or Manual Receive.
• Auto Receive: Leave the watch over night in the location you selected in step 2. See “Auto Receive”
for details.
• Manual Receive: Perform the operation under “To perform manual receive”.
Auto Receive
• With Auto Receive, the watch performs the receive operation each day automatically up to six times (up
to five times for the Chinese calibration signal) between the hours of midnight and 5 a.m. When any
receive operation is successful, none of the other receive operations for that day are performed.
• When a calibration time is reached, the watch will perform the receive operation. The receive operation
is not performed if a calibration time is reached while you are configuring settings.
E-18
E-19
To check the result of the latest receive operation
Use B to select the Receive Mode (R/C) as shown on page E-24.
• The v Mode Hand will move to R/C.
• The c Second Hand will move to Y (YES) if the latest receive operation
was successful, or N (NO) if it was not.
30
Note
• It takes about 30 seconds before signal reception conditions stabilize.
• To interrupt a receive operation and return to regular timekeeping, press any button.
To turn auto receive on or off
1. In the Receive Mode (R/C), loosen the crown and then pull it out.
• The c Second Hand will point to Y (YES) if auto receive is currently
on, and N (NO) if it is off.
Note
The c Second Hand will indicate N (NO) if you have adjusted the time or
date setting manually since the latest receive operation.
2. Press C to toggle auto receive between on and off.
30
3. After the setting is the way you want, push the crown back in and lock
it.
• The watch will return to the last receive result (Y/N).
To perform Manual Receive
1. Use B to select the Receive Mode (R/C) as shown on page E-24.
30
2. In the Receive Mode (R/C), hold down A for at least two seconds.
• The c Second Hand will indicate R (READY) while the watch is
getting ready to receive a time calibration signal, and W (WORK)
while a receive operation is in progress.
• If the receive operation is successful, the watch will automatically
adjust its time settings and the c Second Hand will point to Y (YES).
It does not adjust the setting if the operation failed.
Y (YES)
N (NO)
E-20
Radio-controlled Atomic Timekeeping Precautions
• Time calibration signal reception is performed automatically while the watch is in the Timekeeping
Mode.
• Strong electrostatic charge can result in the wrong time setting.
• Even if a receive operation is successful, certain conditions can cause the time setting to be off by up
to one second.
• The watch is designed to update the date automatically for the period from January 1, 2000 to
December 31, 2099. Updating of the date by signal reception will no longer be performed starting from
January 1, 2100.
• If you are in an area where signal reception is not possible, the watch keeps time with the precision
noted in “Specifications” (page E-80).
• The receive operation is disabled under any of the following conditions.
– While power is at Level 2 or lower (page E-12)
– While the watch is in the power recovery mode (page E-13)
– While the watch is in the function sleep state (power saving, page E-15)
• A receive operation is cancelled if an alarm sounds while it is being performed.
E-22
E-21
Mode Reference Guide
Your watch has 8 “modes”. The mode you should select depends on what you want to do.
To do this:
Enter this mode:
See:
• View the current time, date, and day of the week
• Home City, time, and summer time settings
Timekeeping Mode
E-27
Determine magnetic north
Digital Compass Mode
E-35
Determine the altitude at your current location
Altimeter Mode
E-42
• Determine the barometric pressure at your current location
• Barometric pressure differential
Barometer Mode
E-51
Determine the temperature at your current location
Thermometer Mode
E-58
• Set an alarm time
• Turn the alarm on or off
Alarm Mode
E-63
Use the stopwatch to measure elapsed time
Stopwatch Mode
E-65
• Perform a manual time calibration signal receive operation
• Check whether the last receive operation was successful
• Configure Auto Receive settings
Receive Mode
E-16
E-23
Operation Guide 5242
Selecting a Mode
• The illustration below shows which buttons you need to press to navigate between modes.
• To return to the Timekeeping Mode from any other mode, hold down B for about two seconds.
Note
• The Digital Compass Mode and Altimeter Mode can be entered only from the Timekeeping Mode.
Perform the operations below after entering the Timekeeping Mode.
Timekeeping Mode
Thermometer
Mode
Barometer
Mode
30
30
30
Altimeter Mode
Digital Compass Mode
Alarm Mode
Stopwatch Mode
Receive Mode
30
30
30
30
30
E-24
E-25
General Functions (All Modes)
The functions and operations described in this section can be used in all of the modes.
Direct Timekeeping Mode Access
• To enter the Timekeeping Mode from any other mode, hold down B for about two seconds.
Auto Return Features
• The watch will automatically return to the Timekeeping Mode if you do not perform any button operation
for a particular amount of time in each mode.
Mode Name
Approximate Elapsed Time
Alarm, Receive
2 to 3 minutes
Digital Compass, Altimeter, Barometer, Thermometer
1 to 2 minutes
Configuring Home City Settings
The Home City is location where you will normally use the watch. You can choose from a selection of city
codes that represent 29 cities around the globe.
To configure Home City settings
30
30
Note
This watch does not have a city code that corresponds to Newfoundland.
1. In the Timekeeping Mode, loosen the crown and then pull it out.
• This will cause the c Second Hand to move to the city code of the
currently selected Home City.
• This indicates the city code setting mode.
2. Rotate the crown to move the c Second Hand to the city code you
want to select as your Home City.
• Whenever you select a city code, the v Mode Hand will move to its
summer time setting, while the z Hour Hand, x Minute Hand, and
b Day Indicator will move to the current time and date in that city.
3. After the setting is the way you want, push the crown back in and then
lock it.
TYO (TOKYO)
E-27
E-26
Standard Time and Daylight Saving Time Setting
Except for China time zones, setting standard time/daylight saving time to AUTO will cause standard time/
daylight saving time to switch automatically in accordance with the time calibration signal. In locations not
covered by a time calibration signal, you need to switch manually.
Note
Daylight saving time (DST), or summer time as it is known in some countries, calls for setting clocks
ahead one hour from standard time during the summer season.
Note that the period during which and the areas where Daylight saving time is applied depend on each
country. Some countries or geographic areas may not use summer time.
To select Auto or Manual Standard Time/Daylight Saving Time Switching
1. In the Timekeeping Mode, unlock the crown and then pull it out.
• The c Second Hand will move to the currently selected Home City code.
• The v Mode Hand will move to STD (standard time) or DST (daylight saving time).
2. Hold down C for at least five seconds until the watch beeps.
• Each time you perform the above operation, the v Mode Hand will switch between MNL (manual
switching) and AUTO (auto switching).
• After about two seconds, the v Mode Hand will move back to STD or DST.
Switching between AUTO and MNL
Standard Time and Daylight saving time
STD: Indicates that the current time is standard time.
DST: Indicates that the current time is daylight saving time.
30
Daylight Saving Time/Standard Time Switching
5 sec
30
30
30
AUTO (STD/DST Auto Switching):
Switches between standard time and daylight saving time automatically in accordance with the received
time synchronization signal.
MNL (STD/DST Manual Switching):
You need to switch between standard time and daylight saving time manually.
E-28
E-29
3. Here you could press C to toggle the v Mode hand between STD and DST.
• If you selected AUTO for standard time/daylight saving time switching, the v Mode Hand will move
automatically to the proper STD/DST setting the next time the watch receives a time calibration
signal.
Switching between STD and DST
30
30
Configuring Current Time and Date Settings Manually
You can configure current time and date settings manually when the watch is unable to receive a time
calibration signal.
To change the current time setting manually
1. In the Timekeeping Mode, loosen the crown and then pull it out.
• This will cause the c Second Hand to move to the city code of the
currently selected Home City.
30
30
30
2. Change the Home City setting, if you want.
• To change the Home City setting, perform step 2 under “To
configure Home City Settings” (page E-27).
3. Hold down B for one second until the c Second Hand moves to
A (a.m.) or P (p.m.)
• This is the time setting mode.
• In the following steps, each press of B cycles between settings as
shown below.
4. Push the crown back in and then lock it.
• This returns to normal timekeeping.
TYO (TOKYO)
E-30
E-31
Operation Guide 5242
To change the current date setting manually
1. In the Timekeeping Mode, loosen the crown and then pull it out.
• This will cause the c Second Hand to move to the city code of the
currently selected Home City.
Home City/DST
(Hold down for about one second.)
Hour/Minute
2. Hold down B for about one second.
• The c Second Hand will indicate whether the current time is a.m. (A)
or p.m. (P).
Hour
30
Year
Month
3. Press B twice.
• The b Day Indicator will move slightly to indicate the date setting
mode.
Day
4. Rotate the crown to adjust the time (hour and minute) setting.
• With the crown pulled out, rotate the crown more than once in the direction that you want to move
the hands. When you release the crown, the hands will start to move at high speed.
• Note that high-speed reverse movement is not supported.
• When adjusting the setting, check to make sure that the c Second Hand correctly indicates an a.m.
time or p.m. time.
5. Press B. This will enter the hour setting mode.
6. Rotate the crown to adjust the hour setting only.
• With the crown pulled out, rotate the crown more than once in the direction that you want to move
the hands. When you release the crown, the hands will start to move at high speed.
• Note that high-speed reverse movement is not supported.
• When adjusting the setting, check to make sure that the c Second Hand correctly indicates an a.m.
time or p.m. time.
• If you want to change the date setting at this time, press B and perform the procedure starting from
step 3 under “To change the current date setting manually” (page E-33).
7. After the setting is the way you want, push the crown back in and lock it.
• This causes timekeeping to resume with the c Second Hand starting from 12 o’clock.
4. Rotate the crown to adjust the date setting.
5. After making sure the b Day Indicator is not moving, press B. This
will enter the month setting mode.
• The c Second Hand will move to the currently selected month.
Nov Dec Jan
Oct
Feb
Sep
Mar
6. Rotate the crown to adjust the month setting.
30
Aug
May
Jun
Setting the month
Apr
Jul
E-32
00
10
20
90
30
30
40
80
50
70
60
Setting the year (tens digit value)
0
1
2
9
3
7. Press B. This will enter the year setting mode.
• The z Hour Hand will move to the number that represents the tens
digit value of the year and the x Minute Hand will move to the
number that represents the ones digit value. The c Second Hand
will move to 12 o’clock and stop there.
8. Rotate the crown to adjust the year setting.
The tens digit value setting changes automatically in accordance with
the ones digit value setting.
• If you want to change the time setting at this time, press B and
then perform the procedure starting from step 4 under “To change
the current time setting manually” (page E-31).
E-33
Taking Direction Readings
The Digital Compass Mode uses a direction sensor to take direction readings. After a direction reading,
the c Second Hand points towards magnetic north.
Hand Indicators
c Second Hand: Points to magnetic north.
v Mode Hand: Points to COMP.
30
9. After the setting is the way you want, push the crown back in and lock
it.
Note
The z Hour Hand and x Minute Hand are stopped during a digital
compass reading.
To take a direction reading
1. Make sure the watch is in the Timekeeping Mode.
• For information about changing modes, see “Selecting a Mode”
(page E-24).
Note
• 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
rechargeable battery replaced or after power drops to Level 3.
30
4
8
5
7
6
Setting the year (ones digit value)
E-34
E-35
30
2. While keeping the watch horizontal, press C.
• This will enter the Digital Compass Mode, which is indicated by the
v Mode Hand moving to COMP.
• The c Second Hand will first move to 12 o’clock. Next it will move to
indicate magnetic north.
• For information about magnetic north, see “Compass Precautions”
(page E-41).
• The c Second Hand will continue to move for about 20 seconds after
you start the digital compass operation as it adjusts its magnetic
north reading. After that, the hand will stop at the final reading.
• To update a reading, press C again.
3. Press B to return to the Timekeeping Mode.
Calibrating the Bearing Sensor Reading
You should calibrate the bearing sensor reading whenever you feel that the direction readings being
produced by the watch are off. You can use either of two sensor reading calibration methods: bidirectional
calibration or northerly calibration.
• Bidirectional Calibration and Northerly Calibration
Bidirectional calibration and northerly calibration calibrate the accuracy of the bearing sensor. 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!
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.
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.
• 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.
To perform bidirectional calibration
1. In the Digital Compass Mode, loosen the crown and then pull it out.
• The c Second Hand and x Minute Hand will move to 12 o’clock,
and the z Hour Hand will move to 6 o’clock.
30
2. Press C to start calibration of Point 1.
• After about seven seconds, the c Second Hand will move to Y
(Yes) if Point 1 calibration was successful or to N (No) if it was not
successful.
• If the c Second Hand is pointing at N (unsuccessful), press C to
perform Point 1 calibration again.
• If the c Second Hand is pointing at Y (successful), it will move to
6 o’clock after about two seconds.
E-36
E-37
3. Rotate the watch 180 degrees.
4. Press C to start calibration of Point 2.
• After about seven seconds, the c Second Hand will move to Y
(Yes) if Point 2 calibration was successful or to N (No) if it was not
successful.
• If the c Second Hand is pointing at N (unsuccessful), press C to
return to Point 1 calibration.
1. In the Digital Compass Mode, loosen the crown and then pull it out.
• The c Second Hand and x Minute Hand will move to 12 o’clock,
and the z Hour Hand will move to 6 o’clock.
2. Press B. The z Hour Hand will move to 12 o’clock.
30
4. Press C to start calibration.
• After about seven seconds, the c Second Hand will move to Y (Yes)
if calibration was successful or to N (No) if it was not successful.
• If the c Second Hand is pointing at N (unsuccessful), press C to
perform calibration again.
30
5. After calibration is complete, push the crown back in and then lock it.
• This will start a magnetic north reading operation.
• Press B to return to the Timekeeping Mode.
To perform northerly calibration
Important!
If you want to perform both northerly and bidirectional calibration, perform bidirectional calibration first,
and then perform northerly calibration. This is necessary because bidirectional calibration cancels any
existing northerly calibration setting.
E-38
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).
5. After calibration is complete, push the crown back in and then lock it.
• This will start a magnetic north reading operation.
• Press B to return to the Timekeeping Mode.
30
E-39
Operation Guide 5242
Using the Compass While Mountain Climbing or Hiking
Compass Precautions
Having an idea of your current location and your destination is essential 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.
True north
To set a map
1. Make sure the watch is in the Timekeeping Mode.
• For information about changing modes, see “Selecting a Mode”
(page E-24).
North indicated
on the map
2. While keeping the watch horizontal, press C.
• The v Mode Hand will move to COMP and a direction reading
operation will start.
• After about three seconds, the c Second Hand will points to
magnetic north.
• To update a reading, press C again.
N
3. Keeping the watch still, rotate the map so its north indication is pointing
in the same direction as the c Second Hand of the watch.
30
N
4. While comparing the contours on the map with what you can see
around you, determine your current location and destination on the
map.
• Note that map reading skills and experience are required to
determine your current location and destination on a map.
North indicated by
c Second Hand
Magnetic north
Magnetic North and True North
There are actually two types of north: magnetic north and true north.
Magnetic north is the direction indicated by a compass, while true north is
the direction towards the North Pole. Magnetic north and true north are
not the same.
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 accessories, etc.), large
concentrations of metal (metal doors, lockers, etc.), high-tensile wire,
overhead wires, household appliances, office equipment, mobile phones.
• Accurate direction readings are impossible while in a train, boat, air
plane, etc.
• Accurate readings are also 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 store the watch away from magnets or any other sources of strong magnetism, including:
permanent magnets (magnetic accessories, etc.), household appliances, office equipment, mobile
phones.
• Whenever you suspect that the watch may have become magnetized, perform the procedure under “To
perform bidirectional calibration” (page E-37).
E-40
E-41
Hand Indicators
Taking Altitude Readings
The Altimeter Mode uses a pressure sensor to take altitude readings by measuring changes in air
pressure. The result of an altitude reading is indicated by the hands of the watch.
How the Altimeter Measures Altitude
The altimeter can measure altitude based on its own preset values (initial default method) or using 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 uses that value to convert
barometric pressure readings to altitude (page E-46).
• When mountain climbing, you can specify a reference altitude value in
accordance with a marker along the way or altitude information from a
map. After that, the altitude readings produced by the watch will be more
accurate than they would without a reference altitude value.
z Hour Hand: Indicates the 1000s digit value.
x Minute Hand: Indicates the 100s digit value.
c Second Hand: Indicates the 10s digit value.
v Mode Hand: Indicates the altitude unit as meters (ALTIMETER m) or feet (ALTIMETER ft). The hand
will point to ALTIMETER [–] in the case of a negative reading, or to ALTIMETER 1
(x 10000) for 10,000 feet, 2 (x 10000) for 20,000 feet, or 3 (x 10000) for 30,000 feet to
indicate the altitude reading.
• For example, when the altitude is 10,000 meters, the v Mode Hand will point to ALTIMETER m
(meters). The z Hour Hand points to 10. The x Minute Hand and c Second Hand points to 0.
B
30
30
400
Example: 2,780 meters
Example: 10,000 meters
E-42
Example: 23,840 feet
E-43
To take an altitude reading
1. Make sure the watch is in the Timekeeping Mode.
• For information about changing modes, see “Selecting a Mode”
(page E-24).
30
2. Press A.
• The v Mode Hand will move to ALTIMETER m (meters) or ft
(feet). This indicates the currently selected altitude unit setting.
For information about how to change the setting, see “To specify
altitude, barometric pressure, and temperature units” (page E-62).
• The c Second Hand will move to 0 indicating that altitude
reading operation has started. The v Mode Hand will point
to ALTIMETER [–] in the case of a negative reading, or to
ALTIMETER 1 (x 10000) for 10,000 feet, 2 (x 10000) for 20,000 feet,
or 3 (x 10000) for 30,000 feet to indicate the altitude reading.
• The c Second Hand will indicate the 10s digit value, the x Minute
Hand the 100s digit value, and the z Hour Hand the 1000s digit
value of the reading within 10 seconds.
Note
• The unit for altitude readings by this watch is 10 meters (40 feet).
• The measurement range for altitude readings by this watch are –700 to 10,000 meters (–2,280 to
32,800 feet). The display range is –3,000 to 10,000 meters (–9,840 to 32,800 feet).
• Normally, altitude readings are in relation to an initial default reference value. You can also specify a
different reference altitude value if you want. See “Calibrating the Altitude Sensor Reading” (page
E-46).
• You can specify either meters (m) or feet (ft) for displayed altitude values. See “To specify altitude,
barometric pressure, and temperature units” (page E-62).
• Whenever an altitude reading is outside the allowable measurement range, the hands of the watches
will move to the positions below.
z Hour Hand, x Minute Hand, c Second Hand: 11 o’clock
v Mode Hand: ALTIMETER m (meters) or ALTIMETER ft (feet)
3. Press B to return to the Timekeeping Mode.
30
E-44
E-45
Calibrating the Altitude Sensor Reading
3. After the setting is the way you want, push the crown back in and then
lock it.
• For information about the altitude reference value range, see the
altitude display range on page E-45.
Altitude readings can be affected by changes in atmospheric pressure and temperature changes, and by
changes in temperature at different altitudes. When on a mountain, it is a good idea to calibrate the
altitude sensor reading with altitude values provided by signposts or from other sources.
To calibrate the altitude sensor reading
1. In the Altimeter Mode, loosen the crown and then pull it out.
• If the watch is currently performing an altitude reading operation,
the hands will move to indicate your current altitude.
• If the hands do not indicate an altitude, pulling out the crown will
take an altitude reading. The hands will indicate the result after
about 10 seconds.
30
Example: 990 meters
E-46
30
A
2. Rotate the crown to adjust the indicated altitude reading to the desired
reference altitude value.
• The c Second Hand moves in 10-meter (40-foot) increments.
• After you set an altitude reference value, you can clear it any time
by performing step 1 of this procedure and then pressing A and
C at the same time. This will cause the hands to move to the result
of the last altitude reading the watch performed.
• You can toggle the altitude unit between meters (m) and feet (ft) at
this time by holding down C for two seconds.
30
Example: 1,000 meters
E-47
Operation Guide 5242
How does the altimeter work?
Generally, air pressure and temperature decrease as altitude increases. This watch bases its altitude
readings on International Standard Atmosphere (ISA) values stipulated by the International Civil Aviation
Organization (ICAO). These values define relationships between altitude, air pressure, and temperature.
Altitude
Air Pressure
616 hPa
4000 m
3500 m
3000 m
2500 m
2000 m
1500 m
1000 m
0m
500 m
14000 ft.
12000 ft.
10000 ft.
8000 ft.
6000 ft.
4000 ft.
2000 ft.
0 ft.
701 hPa
Temperature
–11°C
About 8 hPa per 100 m
About 9 hPa per 100 m
There are two standard methods of expressing altitude: Absolute altitude and relative altitude. Absolute
altitude expresses an absolute height above sea level. Relative altitude expresses the difference between
the height of two different places.
–4.5°C
795 hPa
About 10 hPa per 100 m
2°C
899 hPa
About 11 hPa per 100 m
8.5°C
1013 hPa
• Note that the following conditions will prevent you from obtaining accurate readings:
When air pressure changes because of changes in the weather
Extreme temperature changes
When the watch itself is subjected to strong impact
About 12 hPa per 100 m
About 6.5°C
per 1000 m
Height of building 130 m
(relative altitude)
Rooftop at an altitude of
230 m above sea level
(absolute altitude)
15°C
Sea Level
19.03 inHg
About 0.15 inHg per 200 ft.
16.2°F
22.23 inHg
About 0.17 inHg per 200 ft.
30.5°F
25.84 inHg
About 0.192 inHg per 200 ft. 44.7°F
29.92 inHg
About 0.21 inHg per 200 ft.
About 3.6°F
per 1000 ft.
59.0°F
Source: International Civil Aviation Organization
E-48
E-49
Altimeter Precautions
Taking a barometric pressure reading
• 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, do not subject the watch to temperature changes.
• 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 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 by the flight crew.
The Barometer Mode uses a pressure sensor to take barometric pressure readings.
• The differential between two readings is also indicated.
Hand Indicators
z Hour Hand: Indicates the 100s digit value when the pressure unit is hPa, and the 10s digit value when
the unit is inHg.
x Minute Hand: Indicates the 10s digit value when the pressure unit is hPa, and the 1s digit value when
the unit is inHg.
c Second Hand: Indicates the 1s digit value when the pressure unit is hPa, and the first digit value to the
right of the decimal place when the unit is inHg.
v Mode Hand: Points to BAROMETER hPa when the pressure reading is less than 1000 hPa, points to
BAROMETER 1000 when the reading is 1000 hPa or higher, or points to
BAROMETER inHg when the unit is inches of mercury.
30
Example: 920 hPa
30
Example: 25.1 inHg
E-50
E-51
To take a barometric pressure reading
1. Enter the Timekeeping Mode.
• For information about changing modes, see “Selecting a Mode”
(page E-24).
30
2. Press B once.
• The v Mode Hand will move to BAROMETER hPa or
BAROMETER inHg. This indicates the currently selected
barometric pressure unit setting. For information about how to
change the setting, see “To specify altitude, barometric pressure,
and temperature units” (page E-62).
• The c Second Hand will move to 0 indicating that barometric
pressure reading operation has started. The reading result will be
displayed within 10 seconds.
• If the barometric pressure differential was displayed the last time
you exited the Barometer Mode, entering the Barometer mode
displays the pressure differential.
30
Note
• This watch takes barometric pressure readings in 1 hPa (0.1 inHg)
units.
• The barometric pressure measurement range and display range are
260 hPa to 1100 hPa (7.7 inHg to 32.5 inHg).
• Whenever a barometric pressure reading is outside the allowable
measurement range, the hands of the watches will move to the
positions below.
z Hour Hand, x Minute Hand, c Second Hand: 11 o’clock
v Mode Hand: BAROMETER hPa or BAROMETER inHg
Barometric Pressure Differential Indicator
Your watch automatically takes a barometric pressure reading every two hours (at the 30-minute mark of
evenly numbered hours). If you take a manual reading, the c Second Hand will indicate the difference
between the last auto reading and the current manual reading. You can use the barometric pressure
differentials to predict upcoming weather trends.
Positive differential: Indicates improving weather.
Negative differential: Indicates deteriorating weather.
E-52
E-53
Hand Indicators
z Hour Hand: Points to 12 o’clock.
x Minute Hand: Points to 12 o’clock.
c Second Hand: Specifies the barometric
pressure differential in the
range of ±10 hPa.
v Mode Hand: Points to BAROMETER hPa.
Current pressure
greater than most
recent measured
pressure
inHg values
hPa values
2. Each press of C at this time will cause the hands to toggle between indication of the barometric
pressure reading and the barometric pressure differential.
• The watch maintains the last barometric pressure auto reading in memory. The stored reading is
replaced whenever a new auto reading is performed.
Reading the Barometric Pressure
Differential Indicator
Pressure differential is indicated in the range of
±10 hPa, in 1-hPa units.
• The nearby screen shot, for example, shows
what the pointer would indicate when the
calculated pressure differential is
approximately –5 hPa (approximately –0.15
inHg).
• The hPa unit is always used for barometric
pressure readings. You also can read the
barometric pressure differential in inHg units
as shown in the illustration.
E-54
To show and hide barometric pressure differential
1. While a barometric pressure reading is displayed in the Barometer Mode, press C.
• Pressing C while an auto barometric pressure reading is indicated will take a new manual reading
and cause the c Second Hand to indicate the differential between the auto reading and the new
manual reading.
Note
• The barometric pressure differential unit is 1 hPa, and the display range is ±10 hPa.
• If the barometric pressure differential is outside the ±10 hPa display range, the c Second Hand will
move to 11 o’clock.
30
c Barometric
Pressure
Differential
Indicator
Current pressure
less than most
recent measured
pressure
E-55
Operation Guide 5242
Calibrating the Barometric Pressure Sensor Reading
2. Rotate the crown to move the hands so they match the barometric
pressure reading produced by another instrument.
• Rotating the crown causes the c Second Hand to move in 1 hPa
(0.1 inHg) increments.
• After you calibrate the barometric pressure sensor reading, you
can clear calibration settings any time by performing step 1 of this
procedure and then pressing A and C at the same time. This
will cause the hands to move to the result of the last barometric
pressure reading the watch performed.
• You can toggle the barometric pressure unit between hPa and inHg
at this time by holding down C for two seconds.
The pressure sensor of this watch is adjusted at the factory and so further adjustment is not required by
you. However, if you notice that the pressure readings produced by the watch are different from readings
produced by another instrument, you can use the procedure in this section to make corrections.
Important!
The watch will not be able to produce correct pressure readings if you make a mistake during the
correction procedure. Check to make sure that the value you use for correction produces correct pressure
readings.
To calibrate the Barometric Pressure Sensor Reading
1. In the Barometer Mode, loosen the crown and then pull it out.
• If the watch is currently performing a barometric pressure reading
operation, the hands will move to indicate the current barometric
pressure.
• If the hands do not indicate a barometric pressure, pulling out the
30
crown will take a barometric pressure reading. The z Hour Hand,
x Minute Hand, and c Second hand will indicate the result after
about 10 seconds.
30
Example: 1000 hPa
3. After the setting is the way you want, push the crown back in and then
lock it.
• For information about the barometric pressure calibration value
range, see the barometric pressure display range on page E-53.
Barometric Pressure Reading Precautions
• Sudden changes in temperature can affect the pressure sensor and produce errors in reading values.
Example: 999 hPa
E-56
E-57
To take a temperature reading
Taking Temperature Readings
1. Enter the Timekeeping Mode.
• For information about changing modes, see “Selecting a Mode”
(page E-24).
The Thermometer Mode uses a temperature sensor to take temperature readings. The result of a
temperature reading is indicated by the hands of the watch.
2. Press B twice.
• The v Mode Hand will move to THERMO °C or THERMO °F.
This indicates the currently selected temperature unit setting.
For information about how to change the setting, see “To specify
altitude, barometric pressure, and temperature units” (page E-62).
• The c Second Hand will move to 0 indicating that the temperature
reading operation has started. The reading result will appear within
eight seconds.
Hand Indicators
z Hour Hand: When the unit is Celsius (°C), indicates the 10s digit value. When the unit is Fahrenheit (°F),
indicates the 100s digit value.
x Minute Hand: When the unit is Celsius (°C), indicates the 1s digit value. When the unit is Fahrenheit (°F),
indicates the 10s digit value.
c Second Hand: When the unit is Celsius (°C), indicates the first digit value to the right of the decimal
point. When the unit is Fahrenheit (°F), indicates the 1s digit value.
v Mode Hand: When the unit is Celsius (°C) and the reading is 0°C or above, points to THERMO °C.
When the reading is below 0°C, points to THERMO [–]. When the unit is Fahrenheit (°F),
points to THERMO °F.
30
30
Example: 25.3°C
30
Note
• The unit for temperature readings by this watch is 0.1°C (1°F).
• The measurement range for temperature readings by this watch is
–10.0°C to 60.0°C (14°F to 140°F).
• Whenever a temperature reading is outside the allowable measurement
range, the hands of the watches will move to the positions below.
z Hour Hand, x Minute Hand, c Second Hand: 11 o’clock
v Mode Hand: THERMO °C or THERMO °F
30
Example: 62°F
E-58
E-59
Calibrating the Temperature Sensor Reading
The temperature sensor of this watch is adjusted at the factory and so further adjustment is not required
by you. However, if you notice that the readings produced by the watch are different from readings
produced by another instrument, you can use the procedure in this section to make corrections.
Important!
• The watch will not be able to produce correct temperature readings if you make a mistake during the
correction procedure. Check to make sure that the value you use for correction produces correct
temperature readings.
• Before performing the procedure below, remove the watch from your wrist leave it in the area where
you will take the reading for about 20 to 30 minutes to allow the case temperature to become the same
as surrounding air temperature.
To calibrate the temperature sensor reading
1. In the Thermometer Mode, loosen the crown and then pull it out.
• If the watch is currently performing a temperature reading operation, the hands will move to indicate
the current temperature.
• If the hands do not indicate a temperature, pulling out the crown will take a temperature reading.
The hands will indicate the result after about 8 seconds.
2. Rotate the crown to move the hands so they match the temperature reading produced by another
instrument.
• Rotating the crown causes the c Second Hand to move in 0.1°C (1°F) increments.
• After you calibrate the temperature sensor reading, you can clear it any time by performing step 1 of
this procedure and then pressing A and C at the same time. This will cause the hands to move to
the result of the last temperature reading the watch performed.
• You can toggle the temperature unit between Celsius (°C) and Fahrenheit (°F) at this time by holding
down C for two seconds.
30
Example: 29.9°C
30
Example: 30.0°C
3. After the setting is the way you want, push the crown back in and then lock it.
For information about the temperature calibration value range, see the temperature display range on
page E-59.
Temperature Reading Precautions
• Temperature readings are affected by your body temperature, direct sunlight, and moisture. To achieve
a more accurate temperature readings, remove the watch from your wrist, place it in a well ventilated
location out of direct sunlight, and wipe all moisture from the case. It takes approximately 20 to 30
minutes for the case of the watch to reach the actual surrounding temperature.
E-60
E-61
Specifying Altitude, Barometric Pressure, and Temperature Units
Using the Alarm
Use the procedure below to specify the altitude, barometric pressure, and temperature units to be used in
the Altimeter Mode, Barometer Mode and the Thermometer Mode.
When the alarm is turned on, an alarm will sound for about 10 seconds each day when the time in the
Timekeeping Mode reaches the preset alarm time. This is true even if the watch is not in the Timekeeping
Mode.
To specify altitude, barometric pressure, and temperature units
1. Make sure the watch is the the mode for the type of unit you want to
specify (Altimeter, Barometer, or Thermometer Mode).
• For information about changing modes, see “Selecting a Mode”
(page E-24).
30
2. After loosening the crown, pull it out.
• The v Mode Hand will move to the currently selected unit setting.
3. Hold down C for about two seconds to toggle between the available
unit settings.
When specifying this type of unit:
Press C to toggle between these settings:
Altitude
m (meters) and ft (feet)
Barometric Pressure
hPa (hectopascals) and inHg (inches of mercury)
Temperature
°C (Celsius) and °F (Fahrenheit)
Hand Indicators
z Hour Hand: Indicates the currently set alarm time hour.
x Minute Hand: Indicates the currently set alarm time minute.
c Second Hand: Indicates the current a.m. (A) and p.m. (P) setting.
v Mode Hand: Indicates the current alarm on (ALM ON) and off
(ALM OFF) setting.
30
To change the alarm time setting
1. Use B to select the Alarm Mode (ALM) as shown on page E-24.
• The v Mode Hand will move to ALM ON or ALM OFF to indicate
the current setting. The c Second Hand indicates the current A (a.m.)
or P (p.m.) setting.
2. After loosening the crown, pull it out.
• The v Mode Hand will move to ALM ON.
• You can toggle between the hour and minute setting mode, and the
hour only setting mode by pressing B.
4. After the setting is the way you want, push the crown back in and lock it.
E-62
E-63
Operation Guide 5242
3. Rotate the crown to set the alarm time.
• With the crown pulled out, rotate the crown more than once in the direction that you want to move
the hands. When you release the crown, the x Minute Hand will start to move at high speed. Note
that high-speed reverse movement is not supported.
• z Hour Hand movement is synchronized with x Minute Hand movement.
Using the Stopwatch
The stopwatch measures elapsed time in units of 1 second up to 11 hours, 59 minutes, 59 seconds. When
the maximum limit is reached, elapsed time returns to zero automatically and timing continues from there.
Hand Indicators
4. Press B to switch to the hour setting mode.
• The z Hour Hand will move slightly left and right to indicate the z Hour Hand setting mode.
• If you want to change the hour setting without changing the minute setting, skip step 4 above.
• When adjusting the alarm time setting, check to make sure that the c Second Hand correctly
indicates A (AM) or P (PM).
• Rotate the crown to adjust the hour setting only.
• With the crown pulled out, rotate the crown more than once in the direction that you want to move
the hands. When you release the crown, the z Hour Hand will start to move at high speed. Note that
high-speed reverse movement is not supported.
z Hour Hand: Indicates elapsed hours.
x Minute Hand: Indicates elapsed minutes.
c Second Hand: Indicates elapsed seconds.
v Mode Hand: Points to STW.
30
To perform elapsed time measurement
1. Use B to select the Stopwatch Mode (STW) as shown on page E-24.
• The v Mode Hand will move to STW.
2. Perform the key operations shown below.
5. After the setting is the way you want, push the crown back in and lock it.
• The alarm always works based on the time kept in the Timekeeping Mode.
To turn the alarm on or off
In the Alarm Mode, press C to toggle the alarm between on and off. The current on/off setting is indicated
by the v Mode Hand.
• The alarm will not sound while the watch is in the function sleep state when power is low.
C
C
C
C
A
Start
Stop
(Restart)
(Stop)
Reset
3. After finish an elapsed time operation, press A to reset the stopwatch.
• An ongoing stopwatch operation will continue even if you pull out
the crown to perform some setting operation.
• Button operations are disabled when the crown is pulled out while
an elapsed time operation is in progress.
To stop the alarm
• Press any button.
E-64
E-65
To trigger auto hand home position adjustment manually
1. In the Timekeeping Mode, loosen the crown and then pull it out.
Adjusting Home Positions
Strong magnetism or impact can cause the hands and/or day setting to be off, even if the watch is able to
perform the signal receive operation.
2. Hold down A for at least five seconds, until the c Second Hand
moves to 12 o’clock.
Auto Home Position Adjustment
• Auto correction corrects the positions of all hands. The b Day Indicator must be corrected manually
using the procedure under “To trigger auto hand home position adjustment manually” (page E-67).
• Around 2:55 a.m. each day, the watch performs a process that takes about 30 seconds to confirm that
hand positions are correct. During this process, the v Mode Hand will move to 12 o’clock. If current
hand positions are correct, normal hand movement will resume after about 30 seconds. If hand
positions are not correct for some reason, the watch will correct them automatically and then resume
normal hand movement.
30
3. Release A after the c Second Hand moves to 12 o’clock.
• This will start auto hand home position adjustment for all of the
hands. Note that the b Day Indicator is not adjusted.
• Home position adjustment is complete when all hands are at 12
o’clock.
4. Push the crown back in and then lock it.
• This returns to the Timekeeping Mode. The hands will return to
their normal positions and resume normal timekeeping. Wait until
everything stops moving before performing any operation.
• If you want to adjust the b Day Indicator home position, skip step 4
above and proceed from step 2 under “To adjust the Day Indicator
home position” on page E-68.
Important!
• Pushing the crown back in while hands are moving will cancel home position adjustment.
• If you do not perform any operation with the crown for about two minutes after pulling it out, crown
operations will become disabled and hands will not move if you rotate the crown. If this happens, push
the crown back in and then pull it out again.
E-66
E-67
To adjust the Day Indicator home position
1. In the Timekeeping Mode, loosen the crown and then pull it out.
2. Perform steps 2 and 3 under “To trigger auto hand home position
adjustment manually” (page E-67).
3. Press A.
• This will cause the b Day Indicator to move to its current home
1
position, which should be 1 centered in the indicator window.
• If 1 is not centered in the b Day Indicator window, rotate the crown
to center it.
• Quickly rotating the crown at this time will cause high-speed
movement of the b Day Indicator. Note that high-speed reverse
movement is also supported.
• To stop high-speed movement, rotate the crown again in the
opposite direction.
4. After the b Day Indicator setting is the way you want, push the crown
back in and then lock it.
• This returns to the Timekeeping Mode. The b Day Indicator
will indicate the current date. Wait until it stops moving before
performing any operation.
Important!
• Pushing the crown back in while the b Day indicator is moving will register hand adjustment but cancel
day indicator adjustment.
• If you do not perform any operation with the crown for about two minutes after pulling it out, crown
operations will become disabled and hands will not move if you rotate the crown. If this happens, push
the crown back in and then pull it out again.
Illumination
The face of the watch is illuminated for easy reading in the dark.
The watch’s auto light switch turns on illumination automatically when
you angle the watch towards your face.
• The auto light switch must be enabled (page E-71) for it to operate.
30
To turn on illumination manually
Pressing L in any mode turns on illumination.
• You can use the procedure below to select either 1.5 seconds or three
seconds as the illumination duration. When you press L, illumination
will remain on for 1.5 or three seconds depending on the current
setting.
• Pressing L turns on illumination even if auto light switch operation is
disabled.
• Note that illumination will not turn on while a sensor taking a reading or
during high-speed movement of the hands or day indicator.
To change the illumination duration
1. In the Timekeeping Mode, loosen the crown and then pull it out.
• The c Second Hand will point to the city code of the currently select Home City, and the v Mode
Hand will point to the current standard time/summer time setting.
2. Hold down L for about three seconds until the watch beeps once or three times.
• Releasing L after one beep selects 1.5 seconds. Releasing it after three beeps selects three
seconds.
3. After the setting is the way you want, push the crown back in and then lock it.
E-68
E-69
About the Auto Light Switch
Enabling on the auto light switch causes illumination to turn on,
whenever you position your wrist as described below in any mode.
Moving the watch to a position that is parallel to the ground and
then tilting it towards you more than 40 degrees causes
illumination to turn on.
More than
40°
Wear the watch on the
outside of your wrist
Warning!
• Always make sure you are in a safe place whenever you are reading the face of watch using the
auto light switch. Be especially careful when running or engaged in any other activity that can
result in accident or injury. Also take care that sudden illumination by the auto light switch does
not startle or distract others around you.
• When you are wearing the watch, make sure that its auto light switch is disabled before riding on
a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended
operation of the auto light switch can create a distraction, which can result in a traffic accident
and serious personal injury.
Note
• This watch features a “Full Auto LED Light”, so the auto light switch operates only when available light
is below a certain level. Illumination does not turn on under bright light.
• The auto light switch is always disabled, regardless of its on/off setting, when any one of the following
conditions exists.
While an alarm is sounding
During sensor measurement
While the hands or b Day indicator is moving at high speed
E-70
To enable or disable the auto light switch
While in the Timekeeping Mode, hold down L for at least three seconds, until the watch beeps once or
twice.
• Releasing L after one beep disables the auto light switch. Releasing it after two beeps enables it.
• The auto light switch disables automatically whenever battery power drops to Level 2 (page E-13).
Illumination Precautions
• The electro-luminescent panel that provides illumination loses power after very long use.
• Illumination may be hard to see when viewed under direct sunlight.
• Illumination turns off automatically whenever an alarm sounds.
• Frequent use of illumination runs down the battery.
Auto light switch precautions
• Wearing the watch on the inside of your wrist, movement of your arm, or vibration of your arm can
cause frequent activation of the auto light switch and illumination. To avoid running down the battery,
disable the auto light switch whenever engaging in activities that might cause frequent illumination.
• Note that wearing the watch under your sleeve while the auto light switch is enabled can cause
frequent illumination and can run down the battery.
E-71
Operation Guide 5242
• Illumination may not turn on if the face of the watch is more than 15 degrees above
or below parallel. Make sure that the back of your hand is parallel to the ground.
• Illumination turns off after the preset illumination duration (page E-69), even if you
keep the watch pointed towards your face.
• Static electricity or magnetic force can interfere with proper operation of the auto
light switch. If illumination does not turn on, try moving the watch back to the
starting position (parallel with the ground) and then tilt it back towards your face
again. If this does not work, drop your arm all the way down so it hangs at your
side, and then bring it back up again.
• You may notice a very faint clicking sound coming from the watch when it is shaken
back and forth. This sound is caused by mechanical operation of the auto light
switch, and does not indicate a problem with the watch.
Troubleshooting
Hand Movement and Position
■ I lost track of what mode the watch is in.
Refer to “Selecting a Mode” (page E-24). Pushing the crown back in and lock it. Next, hold down B for
about two seconds to return to the Timekeeping Mode.
■ The c Second Hand is jumping at two-second intervals.
■ All the watch’s hands are stopped at 12 o’clock and none of the buttons work.
Power may be low. Expose the watch to light until the c Second Hand starts moving smoothly, at
one-second intervals (page E-12).
■ The hands of the watch suddenly start moving at high speed, even when I do not perform any
operation.
This could be due to any one of the following causes. In all cases, the hand movement does not indicate
malfunction, and should stop shortly.
• The watch is recovering from a sleep state (page E-15).
• The time setting is being adjusted following a successful auto time calibration signal receive operation
(page E-16).
• The watch is returning to the Timekeeping Mode from another mode.
■ Hand movement is abnormal.
The watch is auto correcting hand positions. Normal hand movement will resume after the correction
process is complete.
E-72
E-73
■ Hands suddenly stop moving. Button operation also is disabled.
The watch may be in the power recovery mode (page E-13). Do not perform any operation until the hands
return to their normal positions (in about 15 minutes). The hands should return to their correct positions
when normal operation returns. To help power recover, leave the watch in a location where it is exposed
to light.
■ The current time setting is off by hours.
Your Home City setting may be wrong. Check your Home City setting and correct it, if necessary (page
E-27).
■ The current time setting is off by one hour.
• The current standard time (STD)/summer time (DST) is wrong (page E-28).
• If you are using in the watch in an area where time calibration signal reception is not possible, you may
need to change your Home City’s STD (standard time)/DST (daylight saving time) setting manually.
Use the procedure under “To select Auto or Manual Standard Time/Daylight Saving Time Switching”
(page E-29) to change the STD/DST setting.
Crown Operations
■ Nothing happens when I rotate the crown while it is pulled out.
You did not perform any operation for more than three minutes while the crown was pulled out, causing
operation to become disabled automatically. Push the crown in and pull it back out again to re-enable
operation.
See “Using the Crown” (page E-3).
Operation Tone
■ The operation tone does not sound when it should.
Battery power is low. Expose the watch to light to charge it. See “Charging the Watch” (page E-11).
■ The hands and/or day indications are off.
This could indicate that the watch has been exposed to magnetism or strong impact, which has caused
problems with proper hand and day alignment. Adjust the watch’s hand and day home position alignment
(page E-66).
■ Nothing happens when I press a button.
Button operation may become disabled after you perform a crown operation. If this happens, rotate the
crown slightly to correct the problem.
E-74
E-75
Sensor modes
■ An error is indicated during sensor operation.
Subjecting the watch to strong impact can cause sensor malfunction or improper contact of internal
circuitry. When this happens an error is indicated and the sensor operation cannot be performed. The
illustrations below show how errors are indicated in each sensor mode.
Digital Compass
Mode
30
Altimeter
Mode
Barometer
Mode
30
Thermometer
Mode
30
■ What causes incorrect direction readings?
• The watch may have been exposed to magnetism. Calibrate the direction sensor.
• A 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 such objects and try again.
■ What causes different direction readings to produce different results at the same location?
• Magnetism generated by nearby digital noise sources (such as high-tension power lines) can interfere
with the detection of terrestrial magnetism. Move away from the source of the digital noise and try
again.
■ Why am I having problems taking direction readings indoors?
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.
30
• During digital compass operations, nearby strong magnetism can cause an error to be indicated.
• If the error is indicated during a measurement, restart the measurement. If an error is indicated when
you restart the measurement, it probably means that there is a problem with the sensor or internal
circuitry.
Whenever you have a sensor malfunction, take the watch to your original dealer or nearest authorized
CASIO distributor as soon as possible.
Charging
■ The watch does not resume operation after I expose it to light.
This can happen after the power level drops to Level 3 (page E-12). Continue exposing the watch to light
until the c Second Hand starts moving smoothly (at one-second intervals).
■ The c Second Hand starts to move at one-second intervals, but then suddenly returns to jumping
at two-second intervals.
The watch probably is not sufficiently charged yet. Continue keeping it exposed to light.
E-76
E-77
■ Auto Receive is not performed or I cannot perform Manual Receive.
Time Calibration Signal
The information in this section applies only when LON (LONDON), PAR (PARIS), ATH (ATHENS), HNL
(HONOLULU), ANC (ANCHORAGE), LAX (LOS ANGELES), DEN (DENVER), CHI (CHICAGO), NYC
(NEW YORK), HKG (HONG KONG), or TYO (TOKYO) is selected as the Home City. You need to adjust
the current time manually when any other city is selected as the Home City.
■ The c Second Hand indicates N (NO) when I check the result of the latest receive operation.
Possible Cause
Remedy
Page
• You are wearing or moving the watch, or
performing a button operation during the signal
receive operation.
• The watch is in an area with poor reception
conditions.
Keep the watch in an area where reception
conditions are good while the signal receive
operation is being performed.
E-18
You are in an area where signal reception is not
possible for some reason.
See “Approximate Reception Ranges”.
The calibration signal is not being transmitted for
some reason.
• Check the website of the organization that
maintains the time calibration signal in your area
for information about its down times.
• Try again later.
Remedy
Page
The watch is not in the Timekeeping Mode.
Auto Receive will not be performed if the watch is
not in the Timekeeping Mode.
E-24
Your Home City setting is wrong.
Check your Home City setting and correct it, if
necessary.
E-27
There is not enough power for signal reception.
Expose the watch to light to charge it.
E-11
■ Time calibration signal reception is successful, but the time and date settings are wrong.
E-17
—
■ The current time setting changes after I set it manually.
You may have the watch configured for Auto Receive of the time calibration signal (page E-21), which will
cause the time to be adjusted automatically according to your currently selected Home City. If this results
in the wrong time setting, check your Home City setting and correct it, if necessary (page E-27).
E-78
Possible Cause
Possible Cause
Remedy
Page
Your Home City setting is wrong.
Check your Home City setting and correct it, if
necessary.
E-27
The date and time settings may have been affected Adjust the home positions of the hands and day
by strong magnetism or impact.
indicator.
E-66
Alarm
■ The alarm does not sound.
• The alarm is turned off. Turn on the alarm (page E-64).
• Power may be low. Expose the watch to light until the c Second Hand starts moving smoothly, at
one-second intervals (page E-12).
• The crown may be pulled out. Push the crown back in.
• The a.m. (A)/p.m. (P) setting of the watch may be wrong. See “To change the alarm time setting” (page
E-63).
E-79
Operation Guide 5242
Specifications
Accuracy at normal temperature: ± 15 seconds a month (with no signal calibration)
Timekeeping: Hour, minutes (hand moves every 10 seconds), seconds, day, day of the week
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Other: Home City code (can be assigned one of 29 city codes and Coordinated Universal Time);
Daylight Saving Time (summer time) / Standard Time
Time Calibration Signal Reception: Auto receive up to six times a day (5 times a day for the Chinese
calibration signal; Remaining auto receives cancelled as soon as one is successful); Manual
receive
Receivable Time Calibration Signals:
Mainflingen, Germany (Call Sign: DCF77, Frequency: 77.5 kHz); Anthorn, England (Call Sign:
MSF, Frequency: 60.0 kHz); Fukushima, Japan (Call Sign: JJY, Frequency: 40.0 kHz); Fukuoka/
Saga, Japan (Call Sign: JJY, Frequency: 60.0 kHz); Fort Collins, Colorado, the United States
(Call Sign: WWVB, Frequency: 60.0 kHz); Shangqiu City, Henan Province, China (Call Sign:
BPC, Frequency: 68.5 kHz)
Compass: 20 seconds continuous reading; North indication by hand; Calibration (bidirectional, northerly);
Manual reading
Altimeter:
Measurement range: –700 to 10,000 m (or –2,280 to 32,800 ft.) without reference altitude
Display range: –3,000 to 10,000m (or –9,840 to 32,800 ft.)
Negative values can be caused by readings produced based on a reference altitude or due to
atmospheric conditions.
Measurement unit: 10 m (or 40 ft.)
Other: Calibration; Manual reading
Barometer:
Measurement range: 260 to 1,100 hPa (or 7.7 to 32.5 inHg)
Display unit: 1 hPa (or 0.1 inHg)
Other: Calibration; Manual reading; Barometric pressure differential indicator
Thermometer:
Measurement range: –10.0 to 60°C (or 14 to 140°F)
Measurement unit: 0.1°C (or 1°F)
Other: Calibration; Manual reading
Bearing Sensor Precision:
Direction: Within ±12°
Values are guaranteed for a temperature range of –10°C to 40°C (14°F to 104°F).
E-80
E-81
Pressure Sensor Precision:
Conditions (Altitude)
0 to 6000 m
0 to 19680 ft.
± (altitude differential × 2%
+ 15 m) m
± (altitude differential × 2%
+ 50 ft.) ft.
6000 to 10000 m
19680 to 32800 ft.
± (altitude differential × 2%
+ 25 m) m
± (altitude differential × 2%
+ 90 ft.) ft.
0 to 6000 m
0 to 19680 ft.
± 50 m every 10°C
± 170 ft. every 50°F
6000 to 10000 m
19680 to 32800 ft.
± 70 m every 10°C
± 230 ft. every 50°F
Fixed
temperature
Effect of
variable
temperature
Altimeter
Barometer
± (pressure differential × 2%
+ 2 hPa) hPa
± (pressure differential × 2%
+ 0.059 inHg) inHg
± 5 hPa every 10°C
± 0.148 inHg every 50°F
• Values are guaranteed for a temperature range of –10°C to 40°C (14°F to 104°F).
• Precision is lessened by strong impact to either the watch or the sensor, and by temperature extremes.
Temperature Sensor Precision:
±2°C (±3.6°F) in range of –10°C to 60°C (14°F to 140°F)
Alarm: Daily alarm
Stopwatch:
Measuring unit: 1 second
Measuring capacity: 11:59' 59"
Measuring modes: Elapsed time
Illumination: LED (light-emitting diode); Selectable illumination duration; Auto Light Switch (Full Auto LED
Light operates only in the dark)
Other: Power Saving function; Low battery alert (second hand jumping at 2-second intervals); Auto hand
position adjustment
Power Supply: Solar panel and one rechargeable battery
Approximate battery operating time: 7 months (from full charge to Level 3) under the following
conditions:
Alarm: 10 seconds/day
Light: 1.5 seconds (one operation)/day
Second hand operation: 18 hours/day
Time calibration receive: 4 minutes/day
Direction reading: 20 times/month (20 seconds continuous reading)
Readings using the barometric pressure differential indicator: 12 times/day
Climbs: Once (30 altituded readings)/month
Frequent use of illumination runs down the battery. Particular care is required when using the auto
light switch (page E-71).
E-82
E-83
L-1
City Code Table
City Code
PPG
HNL
ANC
LAX
DEN
CHI
NYC
SCL
RIO
RAI
UTC
LON
PAR
ATH
JED
THR
DXB
KBL
KHI
DEL
L-2
(PAGO PAGO)
(HONOLULU)
(ANCHORAGE)
(LOS ANGELES)
(DENVER)
(CHICAGO)
(NEW YORK)
(SANTIAGO)
(PRAIA)
(LONDON)
(PARIS)
(ATHENS)
(JEDDAH)
(TEHRAN)
(DUBAI)
(KABUL)
(KARACHI)
(DELHI)
City Code
City
Pago Pago
Honolulu
Anchorage
Los Angeles
Denver
Chicago
New York
Santiago
Rio De Janeiro
Praia
London
Paris
Athens
Jeddah
Tehran
Dubai
Kabul
Karachi
Delhi
UTC Offset/
GMT Differential
–11
–10
–9
–8
–7
–6
–5
–4
–3
–1
0
KTM
DAC
RGN
BKK
HKG
TYO
ADL
SYD
NOU
WLG
(KATHMANDU)
(DHAKA)
(YANGON)
(BANGKOK)
(HONG KONG)
(TOKYO)
(ADELAIDE)
(SYDNEY)
(NOUMEA)
(WELLINGTON)
City
Kathmandu
Dhaka
Yangon
Bangkok
Hong Kong
Tokyo
Adelaide
Sydney
Noumea
Wellington
UTC Offset/
GMT Differential
+5.75
+6
+6.5
+7
+8
+9
+9.5
+10
+11
+12
• Based on data as of December 2010.
• The rules governing global times (UTC offset and GMT differential) and summer time are determined
by each individual country.
+1
+2
+3
+3.5
+4
+4.5
+5
+5.5
L-3