Technical information | Casio 2911 Watch User Manual

MO0601-EA
Operation Guide 2911
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to read this manual carefully.
Keep the watch exposed to bright light
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l l l l l l l l l
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Bright Light
Solar cell
The electricity generated by the solar cell of the watch is
stored by a built-in battery. Leaving or using the watch where
it is not exposed to light causes the battery to run down.
Make sure the watch is exposed to light as much as possible.
• When you are not wearing the watch on your wrist,
position the face so it is pointed at a source of bright light.
• You should try to keep the watch outside of your sleeve
as much as possible. Charging is reduced significantly if
the face is only partially covered.
• The actual level at which some functions are disabled depends on the watch model.
• Frequent display illumination can run down the battery quickly and require charging.
The following guidelines give an idea of the charging time required to recover from a
single illumination operation.
Approximately 5 minutes exposure to bright sunlight coming in through a window
Approximately 50 minutes exposure to indoor fluorescent lighting
• Be sure to read “Power Supply” for important information you need to know
when exposing the watch to bright light.
If the display of the watch is blank...
If the display of the watch is blank, it means that the watch’s Power Saving function
has turned off the display to conserve power.
• See “Power Saving Function” for more information.
About This Manual
• Depending on the model of your watch, display text
appears either as dark figures on a light background, or
light figures on a dark background. All sample displays
in this manual are shown using dark figures on a light
background.
• Button operations are indicated using the letters shown
in the illustration.
• Each section of this manual provides you with the
information you need to perform operations in each
mode. Further details and technical information can be
found in the “Reference” section.
• The watch continues to operate, even when it is not exposed to light. Leaving the
watch in the dark can cause the battery to run down, which will cause some watch
functions to be disabled. If the battery goes dead, you will have to re-configure watch
settings after recharging. To ensure normal watch operation, be sure to keep it
exposed to light as much as possible.
Battery charges in the light.
Solar cell
(Converts light to
electrical power.)
Battery discharges in the dark.
(Light)
Bright Light
Electrical
energy
LEVEL 1
LEVEL 2
All
functions
enabled
LEVEL 1
Dis- LEVEL 2
charge LEVEL 3
Charge LEVEL 3
Some
functions
disabled
(Light)
Rechargeable battery
World Time Mode
General Guide
Alarm Mode
• Press C to change from mode to mode.
• In any mode, press L to illuminate the display.
▲
▲
Timekeeping Mode
Press C.
Countdown Timer Mode
▲
▲
▲
Stopwatch Mode
Radio-controlled Timekeeping
This watch receives a time calibration signal and updates
its time setting accordingly. The time calibration signal
includes both Standard Time and Daylight Saving Time
(summer time) data.
• This watch is designed to pick up the time calibration
signal transmitted from Rugby, England and the signal
from Mainflingen, Germany.
PM
indicator
Current Time Setting
Month – Day
Hour : Minutes Seconds
This watch adjusts its time setting automatically in
accordance with a time calibration signal. You can also
perform a manual procedure to set the time and date,
when necessary.
• The first thing you should do after purchasing this watch is to set your Home City,
which is the city where you will use the watch normally. For more information, see
“To set your Home City” below.
• When using the watch in an area that is outside of the range of the transmitters in
Rugby and Mainflingen, you need to adjust the time manually as required. See
“Timekeeping” for information about manual settings.
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration signal:
auto receive and manual receive.
• Auto Receive
Auto receive attempts to receive the time calibration signal automatically up to six
times. For more information, see “About Auto Receive”.
• Manual Receive
Manual receive lets you start a time calibration receive operation with the press of a
button. For more information, see “To perform manual receive”.
Important!
• When getting ready to receive the time calibration signal, position the watch as
shown in the nearby illustration, with its 12 o’clock side facing towards a window.
Make sure there are no metal objects nearby.
Resin Band
Metal Band
To set your Home City
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City code
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1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Use D(east) and B(west) to select the city code you
want to use as your Home City.
• The following are the city codes for major cities in the
Western Europe time zones.
LON: London
PAR and BER: Paris, Berlin, Milan, Rome,
Amsterdam, Hamburg, Frankfurt,
Vienna, Barcelona, Madrid
3. Press A to exit the setting screen.
Important!
• Normally, your watch should show the correct time as soon as you select your Home
City code. If it does not, it should adjust automatically after the next auto receive
operation (in the middle of the night). You can also perform manual receive or you
can set the time manually.
• If you are in an area that does not use Daylight Saving Time (summer time), turn off
the DST setting.
• The watch should not be on its side or facing the wrong way.
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
Inside or
among
buildings
Inside a
vehicle
Near
household
appliances or
office
equipment,
or a mobile
phone
Near a
Near highconstruction
tension
site, airport, or power lines
other sources
of electrical
noise
Among or
behind
mountains
• Signal reception is normally better at night than during the day.
• Time calibration signal reception takes from two to six minutes, but in some cases it
can take as long as 12 minutes. Take care that you do not perform any button
operations or move the watch while time calibration signal reception is in progress.
1
Operation Guide 2911
• This watch is designed to receive the time calibration signal transmitted from Rugby,
England and the signal from Mainflingen, Germany.
Reception Ranges
Configuring Auto Receive Settings
You can use the procedure in this section to configure the watch to receive the signal
of a specific transmitter, or to receive automatically from the transmitter whose signal
is strongest. You can also turn off auto receive, if you want.
• Note that you can perform the following procedure only when LON, BER, or PAR
is selected as your Home City.
Auto Receive Start Times
1
2
3
4
5
6
LON Standard Time
Midnight 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
Daylight Saving Time 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am Midnight
BER Standard Time
1:00 am 2:00 am 3:00 am 4:00 am 5:00 am Midnight
PAR Daylight Saving Time 2:00 am 3:00 am 4:00 am 5:00 am Midnight 1:00 am
next day
About the Receiving Indicator
The receiving indicator shows the strength of the calibration signal being received. For
best reception, be sure to keep the watch in a location where signal strength is
strongest.
Receiving indicator
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DCF
OFF
qvtA
: Auto receive on. The watch selects the transmitter whose signal is
strongest automatically. Signal reception can take up to 12 minutes when
this option is selected.
DCF : Auto receive on for reception of the Mainflingen signal.
MSF : Auto receive on for reception of the Rugby signal.
OFF : Auto receive off.
• For details about transmitters, see “Transmitters”.
4. Press A to exit the setting screen.
• To return to the Timekeeping Mode from the last signal screen, press D.
• For information about city codes that support signal reception, see “To set your
Home City”.
Note
• Manual receive operations are also performed based on the transmitter setting
(qvtA, DCF, MSF) you select above.
• If auto receive is turned off, performing a manual receive operation receives the
signal that is strongest automatically.
To display the Last Signal screen
In the Timekeeping Mode, press D to display the Last Signal screen (indicated by
GET). The Last Signal screen shows the date and time of the last successful time
calibration signal reception.
Receive date
PM
indicator
Receive time
Press D.
Month – Day
Hour : Minutes Seconds
▲
Note
• Auto receive works only while the watch is in the Timekeeping Mode or World Time
Mode. Auto receive is not performed if an auto receive time is reached while an
alarm is sounding, while a countdown timer operation is in progress, or if a setting
screen (a screen with a flashing setting) is on the display.
• Auto receipt of the calibration signal is designed to be performed early in the
morning, while you sleep (provided that the Timekeeping Mode time is set correctly).
Before going to bed for the night, remove the watch from your wrist, and put it in a
location where it can receive the signal easily.
• When auto receive is turned on, the watch receives the calibration signal for two to
six minutes everyday when the Timekeeping Mode time reaches each of the
calibration times. Do not perform any button operation within six minutes before or
after any one of the calibration times. Doing so can interfere with correct calibration.
• Remember that reception of the calibration signal depends on the time kept in the
Timekeeping Mode. The receive operation will be performed whenever the display
shows any one of the calibration times, regardless of whether or not the
Timekeeping Mode time is actually the correct time.
• If more than one auto receive is successful, the watch uses the data from the last
successful receive to adjust settings. When only one reception is successful, the
watch uses the data of the successful reception.
3. Use D to cycle through the settings shown below, until the one you want to use is
displayed.
▲
When auto receive is turned on, the watch attempts to receive the time
calibration signal automatically up to six times. The start times of the auto receive
operations depend on the current Home City and DST settings.
• If all of the first three reception operations fail, the watch automatically performs a
fourth receive operation.
• If any of the remaining receive operations (4, 5, or 6) is successful, any remaining
receive operations are skipped.
• Auto receive is performed in accordance with the Timekeeping Mode time.
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About Auto Receive
To configure auto receive settings
1. In the Timekeeping Mode, press D to display the last
signal screen.
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• The watch will return automatically to the Timekeeping
Mode if you do not perform any button operation for two
or three minutes after displaying the last signal screen.
2. Hold down A until the current auto receive setting
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flashes. This is the setting screen.
• If the auto receive setting does not appear when you
hold down A, it means that the city code currently
Setting status
selected for the Home City is for an area that does not
support calibration signal reception. You cannot turn
auto receive on or off in this case.
lll
• At distances further than about 500 kilometers from a transmitter, signal reception
may not be possible during certain times of year or times of day. Radio interference
may also cause problems with reception.
• Even when the watch is within the reception range of the transmitter, signal
reception is impossible if the signal is blocked by mountains or other geological
formations between the watch and signal source.
• Signal reception is affected by weather, atmospheric conditions, and seasonal
changes.
• See the information under “Signal Receive Troubleshooting” if you experience
problems with time calibration signal reception.
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Mainflingen
llll
Rugby
Home City
Note
• To interrupt a receive operation and return to the Timekeeping Mode, press D.
• If the receive operation is unsuccessful, the message ERR appears on the display
for about one or two minutes. After that, the watch returns to the Timekeeping Mode.
• You can also change from the Last Signal or ERR screen to the normal
timekeeping screen by pressing D.
Last Signal Screen
Signal Receive Troubleshooting
Check the following points whenever you experience problems with calibration signal
reception.
Weak
(Level 1)
Strong
(Level 4)
• Even in an area where signal strength is strong, it takes about 10 seconds for signal
reception to stabilize enough for the receiving indicator to indicate signal strength.
• Use the receiving indicator as a guide for checking signal strength and for finding the
best location for the watch during signal receive operations.
• Following reception of the time calibration signal and calibration of the watch’s time
setting, the Level 4 receiving indicator will remain on the display in all modes. The
Level 4 receiving indicator will not be displayed if signal reception was unsuccessful
or after you adjust the current time setting manually.
• The Level 4 receiving indicator is displayed only when the watch is able to receive
both time and date data successfully. It does not appear when only time data is
received.
• The Level 4 receiving indicator indicates that at least one of the auto calibration
signal receive operations was successful. Note, however, that the Level 4 receiving
indicator disappears from the display each day when the second auto receive
operation of the day is performed.
To perform manual receive
1. Place the watch on a stable surface so its top (12
Receiving indicator
o’clock side) is facing towards a window.
2. In the Timekeeping Mode, hold down D for about two
seconds until the watch beeps.
• Release D and the message RC! appears to indicate
that signal reception has started.
• Time calibration signal reception normally takes from
two to six minutes, but in some cases it can take as long
as 12 minutes. Take care that you do not perform any
button operations or move the watch while time
calibration signal reception is in progress.
Problem
Probable Cause
Cannot perform • The watch is not in the Timekeeping Mode.
manual receive. • Your current Home City is not one of the
following city codes:
BER, PAR, or LON.
Auto receive is • You changed the time setting manually.
turned on, but
• The watch was not in the Timekeeping
the Level 4
or World Time Mode, or you performed
some button operation during the auto
receiving
indicator does
receive operation.
not appear on
• Even if receive is successful, the Level 4
the display.
receiving indicator disappears from the
display each day when the second auto
receive operation of the day is
performed.
• Time data (hour, minutes, seconds) only
was received during the last receive
operation. The Level 4 receiving
indicator appears only when time data
and date data (year, month, day) are
both received.
Time setting is
• If the time is one hour off, the DST
incorrect
setting may be incorrect.
following signal • The Home City code setting is not
reception.
correct for the area where you are using
the watch.
What you should do
• Enter the Timekeeping Mode
and try again.
• Select BER, PAR, or LON as
your Home City.
• Perform manual signal receive
or wait until the next auto
signal receive operation is
performed.
• Check to make sure the
watch is in a location where it
can receive the signal.
• Change the DST setting to
Auto DST.
• Select the correct Home City
code.
• For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Timekeeping Precautions”.
• After signal reception is complete, the display of the watch changes to the Last
Signal screen.
2
Operation Guide 2911
World Time
Current time in
selected city
Countdown Timer
The World Time Mode shows you the current time in 30
cities (29 time zones) around the world.
• If the current time shown for a city is wrong, check your
Home City time settings and make the necessary
changes.
• All of the operations in this section are performed in the
World Time Mode, which you enter by pressing C.
City code
Minutes
To view the time in another city
While in the World Time Mode, press D to scroll eastward through the city codes
(time zones) or B to scroll westward.
• For full information on city codes, see the “City Code Table”.
To toggle a city code time between Standard Time and Daylight Saving Time
1. In the World Time Mode, use B and D to display the
DST indicator
city code (time zone) whose Standard Time/Daylight
Saving Time setting you want to change.
2. Hold down A to toggle Daylight Saving Time (DST
indicator displayed) and Standard Time (DST indicator
not displayed).
• Note that you cannot switch between Standard Time
and Daylight Saving Time while GMT is selected as the
city code.
• The DST indicator will appear whenever you display a
city code for which Daylight Saving Time is turned on.
• Note that the DST/Standard Time setting affects only the
currently displayed city code. Other city codes are not
affected.
You can set the countdown timer within a range of one to
60 minutes. An alarm sounds when the countdown
reaches zero.
• All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
C.
Seconds
1/10 second
To set the countdown start time
1. While the countdown start time is on the display in the Countdown Timer Mode,
hold down A until the current countdown start time starts to flash, which indicates
the setting screen.
• If the countdown start time is not displayed, use the procedure under “To use the
countdown timer” to display it.
2. While a setting is flashing, use D (+) and B (–) to change it.
3. Press A to exit the setting screen.
To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.
• When the end of the countdown is reached, the alarm sounds for 10 seconds or until
you stop it by pressing any button. The countdown time is reset automatically to its
starting value after the alarm stops.
• Press D while a countdown operation is in progress to pause it. Press D again to
resume the countdown.
• To stop a countdown operation completely, first pause it (by pressing D), and then
press B. This returns the countdown time to its starting value.
Stopwatch
Alarms
Alarm time
(Hour : Minutes)
Alarm number
Minutes
The Alarm Mode gives you a choice of four one-time
alarms and one snooze alarm.
Also use the Alarm Mode to turn the Hourly Time Signal
(SIG) on and off.
• There are five alarms numbered AL1 through AL4,
and SNZ. You can configure SNZ as a snooze alarm
only. Alarms AL1 through AL4 can be used as onetime alarms only.
• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C.
Seconds
Hours 1/100
second
To set an alarm time
1. In the Alarm Mode, use D to scroll through the alarm
screens until the one whose time you want to set is
displayed.
AL1
AL2
AL3
To measure times with the stopwatch
Elapsed Time
D
Start
SIG
SNZ
AL4
2. After you select an alarm, hold down A until the hour
setting of the alarm time starts to flash, which indicates
the setting screen.
• This operation turns on the alarm automatically.
3. Use C to move the flashing between the hour and
minute settings.
4. While a setting is flashing, use D (+) and B (–) to change it.
5. Press A to exit the setting screen.
• When setting the alarm time using the 12-hour format, take care to set the time
correctly as a.m. (no indicator) or p.m. (P indicator).
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the
watch is in. In the case of the snooze alarm, the alarm operation is performed a total
of seven times, every five minutes, or until you turn the alarm off.
• Pressing any button stops the alarm tone operation.
• Performing any one of the following operations during a 5-minute interval between
snooze alarms cancels the current snooze alarm operation.
➤D
Stop
➤D
Re-start
➤D
Stop
➤B
Clear
➤B
Split
(SPL displayed)
➤B
Split release
➤D
Stop
➤B
Clear
➤B
Split
➤D
Stop
➤B
Split release
➤B
Clear
Split Time
D
Start
Two Finishes
D
Start
First runner
finishes.
Display time of
first runner.
Display time of
second runner.
The watch has an EL (electro-luminescent) panel that
causes the entire display to glow for easy reading in the
dark. The watch’s auto light switch illuminates the display
automatically when you angle the watch towards your
face.
• The auto light switch must be turned on (indicated by
the auto light switch indicator) for it to operate.
• See “Illumination Precautions” for other important
information.
To test the alarm
In the Alarm Mode, hold down D to sound the alarm.
To turn the Hourly Time Signal on and off
Hourly time signal 1. In the Alarm Mode, use D to select the Hourly Time
Signal (SIG).
on indicator
2. Press B to toggle it on (Hourly Time Signal on
indicator displayed) and off (Hourly Time Signal on
indicator not displayed).
• The Hourly Time Signal on indicator is displayed in all
modes when the Hourly Time Signal is turned on.
Second runner
finishes.
Illumination
Displaying the Timekeeping Mode setting screen
Displaying the snooze alarm setting screen
To turn an alarm on and off
1. In the Alarm Mode, use D to select an alarm.
Snooze alarm indicator 2. Press B to toggle it on and off.
• Turning on a one-time alarm (AL1, AL2, AL3,
AL4) displays the alarm on indicator on its Alarm
Mode screen. Turning on the snooze alarm (SNZ)
displays the alarm on indicator and snooze alarm
indicator on its Alarm Mode screen.
• In all modes, the alarm on indicator is shown for any
alarm that is currently turned on. When the snooze
Alarm on indicator
alarm is on, the snooze alarm indicator is displayed in all
modes.
• The alarm on indicator flashes while the alarm is
sounding.
• The snooze alarm indicator flashes during the 5-minute
intervals between alarms.
The stopwatch lets you measure elapsed time, split times,
and two finishes.
• The display range of the stopwatch is 23 hours, 59
minutes, 59.99 seconds.
• The stopwatch continues to run, restarting from zero
after it reaches its limit, until you stop it.
• Exiting the Stopwatch Mode while a split time is frozen
on the display clears the split time and returns to
elapsed time measurement.
• The stopwatch measurement operation continues even
if you exit the Stopwatch Mode.
• All of the operations in this section are performed in the
Stopwatch Mode, which you enter by pressing C.
Auto light switch
indicator
To turn on illumination manually
In any mode, press L to illuminate the display.
• You can specify 1.5 seconds or 2.5 seconds as the
illumination duration. See “To set the time and date” for
more information.
• The above operation turns on illumination regardless of
the current auto light switch setting.
About the Auto Light Switch
Turning on the auto light switch causes illumination to turn on whenever you position
your wrist as described below in any mode. Note that this watch features a “Full Auto
EL Light,” so the auto light switch operates only when available light is below a certain
level. It does not illuminate the display under bright light.
Moving the watch to a position that is parallel to the ground and then tilting it
towards you at more than 40 degrees causes illumination to turn on.
• Wear the watch on the outside of your wrist.
Parallel to
ground
More than
40°
3
Operation Guide 2911
To turn the auto light switch on and off
In any mode, hold down L for about two seconds to toggle the auto light switch on
(auto light switch indicator displayed) and off (auto light switch indicator not displayed).
• The auto light switch indicator remains in all modes while the auto light switch is
turned on.
Power Supply
This watch is equipped with a solar cell and a special rechargeable battery (secondary
battery) that is charged by the electrical power produced by the solar cell. The
illustration shown below shows how you should position the watch for charging.
Solar cell
After a full charge, timekeeping remains enabled for up to about 8 months.
• The following table shows the amount of time the watch needs to be exposed to light
each day in order to generate enough power for normal daily operations.
Exposure Level (Brightness)
Approximate Exposure Time
Outdoor Sunlight (50,000 lux)
5 minutes
Sunlight Through a Window (10,000 lux)
24 minutes
Daylight Through a Window on a Cloudy Day
(5,000 lux)
48 minutes
Indoor Fluorescent Lighting (500 lux)
8 hours
• Since these are the specs, we can include all the technical details.
• Display on 18 hours per day, sleep state 6 hours per day
• 1 illumination operation (1.5 seconds) per day
• 10 seconds of alarm operation per day
• 16 minutes of signal reception per day
• Stable operation is promoted by frequent charging.
2 hours
22 hours
6 hours
Sunlight Through a Window
(10,000 lux)
5 hours
109 hours
30 hours
Daylight Through a Window
on a Cloudy Day (5,000 lux)
9 hours
222 hours
61 hours
Indoor Fluorescent Lighting
(500 lux)
101 hours
Timekeeping
Use the Timekeeping Mode to set and view the current time and date.
• When setting the time, you can also configure settings for the illumination duration,
the 12/24-hour format, and power saving on/off.
• In the Timekeeping Mode, you can press B to change the display format as shown
below.
• Pressing D in the Timekeeping Mode will display the Last Signal screen.
Press B.
Day of week
PM indicator
Day of the Week Screen
▲
Month – Day
Press D.
|| |||
|||
|||
3
All functions enabled.
|||||
Recover indicator
▲
Press D.
2
▲
▲
Hour : Minutes Seconds
The battery power indicator shows you the current power level of the rechargeable
battery.
Function Status
Battery power indicator Level Battery Power Indicator
All functions enabled.
Alarm, hourly time signal,
illumination, auto light switch,
and display disabled.
Charging Precautions
Make sure you select your Home City code before you change the current time and
date settings. World Time Mode times are all displayed in accordance with the
Timekeeping Mode settings. Because of this, World Time Mode times will not be
correct if you do not select the proper Home City code before setting the time and
date in the Timekeeping Mode.
To set the time and date
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Press C to change the flashing contents in the
sequence shown below to select other settings.
ll
ll l l l ll
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• The flashing charge indicator ( CHG ) at Level 3 tells you that battery power is very
low, and that exposure to bright light for charging is required as soon as possible.
• At Level 4, all functions are disabled and settings return to their initial factory
defaults. Functions are enabled once again after the rechargeable battery is
charged, but you need to set the time and date, after the battery reaches Level 3
(indicated by the flashing charge indicator) from Level 4. You will not be able to
configure any of the other settings until the battery reaches Level 2 (no charge
indicator) after dropping to Level 4.
• Leaving the watch in direct sunlight or some other very strong light source can cause the
battery power indicator to show a reading that is momentarily higher than the actual
battery level. The correct battery power indicator should appear after a few minutes.
• If you use the light or alarms a number of times during a short period, the recover
indicator (RECOV) appears and the following operations become disabled until
battery power recovers.
Illumination
Beeper tone
After some time, battery power will recover and the recover indicator will disappear,
indicating that the above functions are enabled again.
Setting the Time and Date
ll l l l ll
4
▲
Last Signal Screen
(Charge Soon Alert)
All functions, including
timekeeping, disabled and
initialized.
–––
• The above exposure time values are all for reference only. Actual required exposure
times depend on lighting conditions.
Battery Power Indicator and Recover Indicator
1
▲
Important!
• 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 rechargeable battery
power to run down. Make sure that the watch is normally exposed to bright light
whenever possible.
• This watch uses a special rechargeable battery to store power produced by the solar
cell, so regular battery replacement is not required. However, after very long use, the
rechargeable battery may lose its ability to achieve a full charge. If you experience
problems getting the special rechargeable battery to charge fully, contact your dealer
or CASIO distributor about having it replaced.
• Never try to remove or replace the watch’s special battery yourself. Use of the wrong
type of battery can damage the watch.
• The current time and all other settings return to their initial factory defaults whenever
battery power drops to Level 4 and when you have the battery replaced.
• Turn on the watch’s Power Saving function and keep it in an area normally exposed
to bright light when storing it for long periods. This helps to keep the rechargeable
battery from going dead.
▲
Outdoor Sunlight (50,000 lux)
▲
Recovery Times
The table below shows the amount exposure that is required to take the battery from
one level to the next.
Approximate Exposure Time
Exposure Level
(Brightness)
Level 4
Level 3
Level 2
Level 1
▲
Example: Orient the watch so its face
is pointing at a light source.
• The illustration shows how to position
a watch with a resin band.
• Note that charging efficiency drops
when any part of the solar cell is
blocked by clothing, etc.
• You should try to keep the watch
outside of your sleeve as much as
possible. Charging is reduced
significantly if the face is only partially
covered.
Charging Guide
▲
Warning!
• Always make sure you are in a safe place whenever you are reading the 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 turned
off 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.
City code
City Code
DST
12/24-Hour
Format
Seconds
Hour
Power
Saving
Day
Month
Year
Minutes
Certain charging conditions can cause the watch to become very hot. Avoid leaving
the watch in the areas described below whenever charging its rechargeable battery.
Also note that allowing the watch to become very hot can cause its liquid crystal
display to black out. The appearance of the LCD should become normal again when
the watch returns to a lower temperature.
Warning!
Leaving the watch in bright light to charge its rechargeable battery 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
4
Operation Guide 2911
3. When the setting you want to change is flashing, use B and/or D to change it as
described below.
Screen:
To do this:
Do this:
Change the city code
Use D (east) and
B (west).
Press D.
Cycle between auto DST (A), Standard Time
(OF), and Daylight Saving Time (ON)
Toggle between 12-hour (12H) and 24-hour
(24H) timekeeping
Reset the seconds to 00
Toggle the illumination duration setting between
1.5 seconds ( ) and 2.5 seconds ( )
Change the hour, minutes, or year
Press D.
Auto Return Features
Press D.
Press B.
Use D (+) and B
(–).
Change the month or day
Press D.
Toggle Power Saving on (ON) and off (OF)
To turn Power Saving on and off
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Press C nine times until the Power Saving on/off
screen appears.
3. Press D to toggle Power Saving on (ON) and off (OF).
4. Press A to exit the setting screen.
• The Power Saving indicator (P.SAVE) is on the display
in all modes while Power Saving is turned on.
On/Off status
• If you leave the watch in the Alarm Mode for two or three minutes without performing
any operation, it returns to the Timekeeping Mode automatically.
• If you leave the watch with a flashing setting on the display for two or three minutes
without performing any operation, the watch exits the setting screen automatically.
Scrolling
The B and D buttons are used in various modes and setting screens to scroll
through data. In most cases, holding down these buttons scrolls through the data at
high speed.
Initial Screens
When you enter the World Time or Alarm Mode, the data you were viewing when you
last exited the mode appears first.
• See “City Code Table” for a complete list of available city codes.
• Auto DST (A) can be selected only while BER, PAR, or LON is selected as the
Home City code. For more information, see “Daylight Saving Time (DST)” below.
• For information about settings other than the time and date, see the following.
Illumination duration: Illumination
Power Saving: Power Saving Function
4. Press A to exit the setting screen.
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.
The time calibration signals transmitted from Rugby and Mainflingen include both
Standard Time and DST data. When the Auto DST setting is turned on, the watch
switches between Standard Time and DST (summer time) automatically in
accordance with the received time signal.
• The default DST setting is Auto DST (A) whenever you select BER, PAR, or LON
as your Home City code.
• If you experience problems receiving the time calibration signal in your area, it is
probably best to switch between Standard Time and Daylight Saving Time (summer
time) manually.
To change the Daylight Saving Time (summer time) setting
1. In the Timekeeping Mode, hold down A until the city code starts to flash, which
indicates the setting screen.
2. Press C and the DST setting screen appears.
3. Use D to cycle through the DST settings in the sequence shown below.
Auto DST (A)
DST off (OF)
DST on (ON)
4. When the setting you want is selected, press A to exit the setting screen.
• The DST indicator appears to indicate that Daylight Saving Time is turned on.
Reference
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
Graphic Area
The following describes the information indicated by the graphic area in each mode.
Graphic area
Mode
Timekeeping
World Time
Alarm
Countdown Timer
Stopwatch
Graphic Area
Timekeeping Mode seconds
Timekeeping Mode seconds
No indication
Countdown time 1/10-second
Stopwatch time 1/10-second
Power Saving Function
When turned on, the Power Saving function enters a sleep
state automatically whenever the watch is left in an area
where it is dark for a certain period. The table below
shows how watch functions are affected by the Power
Saving function.
Power saving
indicator
Display
Elapsed Time
in Dark
60 to 70 minutes Blank, with Sleep indicator
(P.SAVE) flashing
6 or 7 days
Blank, with Sleep indicator
(P.SAVE) not flashing
Operation
All functions enabled, except
for the display
Beeper tone, illumination, and
display are disabled.
• Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.
• The watch will not enter the sleep state between 6:00 AM and 10:59 PM. If the
watch is already in the sleep state when 6:00 AM arrives, however, it will remain in
the sleep state.
Radio-controlled Timekeeping Precautions
• Strong electrostatic charge can result in the wrong time being set.
• The time calibration signal is bounced off the ionosphere. Because of this, such
factors as changes in the reflectivity of the ionosphere, as well as movement of the
ionosphere to higher altitudes due to seasonal atmospheric changes or the time of
day may change the reception range of the signal and make reception temporarily
impossible.
• Even if the time calibration signal is received properly, certain conditions can cause
the time setting to be off by up to one second.
• The current time setting in accordance with the time calibration signal takes priority
over any time settings you make.
• The watch is designed to update the date and day of the week automatically for the
period January 1, 2000 to December 31, 2099. Setting of the date by the time
calibration signal cannot be performed starting from January 1, 2100.
• This watch can receive signals that differentiate between leap years and non-leap
years.
• Though this watch is designed to receive both time data (hour, minutes, seconds)
and date data (year, month, day), certain signal conditions can limit reception to time
data only.
• Normally, the signal reception date shown by the Last Signal screen is the date data
included in the received time calibration signal. When only time data is received,
however, the Last Signal screen shows the date as kept in the Timekeeping Mode at
the time of signal reception.
• If you are in an area where proper time calibration signal reception is impossible, the
watch keeps time within ±15 seconds a month at normal temperature.
• If you have problems with proper time calibration signal reception or if the time
setting is wrong after signal reception, check your current city code, DST (summer
time), and auto receive settings. The following are the initial factory defaults for these
settings.
Setting
Initial Factory Default
City code
BER (Berlin)
DST (summer time) A
DST (Auto switching)
Auto receive
qvtA (Auto receive)
Transmitters
This watch is designed to receive the time calibration signal transmitted from Rugby,
England and the signal from Mainflingen, Germany. You can select either one of the
transmitters, or you can configure the watch to select the transmitter that has the
strongest signal automatically.
• The following explains how the watch determines which transmitter it should check
first while the watch is configured for auto transmitter search (qvtA).
In this case:
The watch does this:
The first signal auto search operation
1. Checks the Mainflingen signal first.
after factory default settings are in effect, 2. If the Mainflingen signal cannot be
or after the city code has been changed
received, checks the Rugby signal.
Any case other than the above.
1. Checks the last successfully received
signal first.
2. If the last successfully received signal
cannot be received, checks the other
signal.
• Since the watch checks signals from both transmitters when qvtA is selected as the
transmitter setting, signal reception can take as long as 12 minutes.
Timekeeping
• Resetting the seconds to 00 while the current count is in the range of 30 to 59
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to 00 without changing the minutes.
• The day of the week is displayed automatically in accordance with the date (year,
month, and day) settings.
• The year can be set in the range of 2000 to 2099.
• The watch’s built-in full automatic calendar makes allowances for different month
lengths and leap years. Once you set the date, there should be no reason to change
it except after you have the watch’s battery replaced or when battery power drops to
Level 4.
• The current time for all city codes in the Timekeeping Mode and World Time Mode is
calculated in accordance with the Greenwich Mean Time (GMT) differential for each
city, based on your Home City time setting.
• GMT differential is calculated by this watch based on Universal Time Coordinated
(UTC*) data.
* UTC is the world-wide scientific standard of timekeeping. It is based upon carefully
maintained atomic (cesium) clocks that keep time accurately to within microseconds. Leap
seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s rotation.
The reference point for UTC is Greenwich, England.
To recover from the sleep state
Perform any one of the following operations.
• Move the watch to a well-lit area.
• Press any button.
• Angle the watch towards your face for reading.
5
Operation Guide 2911
12-hour/24-hour Timekeeping Formats
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is also
applied in all other modes.
• With the 12-hour format, the PM indicator (P) appears on the display for times in the
range of noon to 11:59 p.m. and no indicator appears for times in the range of
midnight to 11:59 a.m.
• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
any indicator.
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.
• The watch may emit an audible sound whenever the display is illuminated. This is
due to vibration of the EL panel used for illumination, and does not indicate
malfunction.
• Illumination turns off automatically whenever an alarm sounds.
• Frequent use of illumination runs down the battery.
Auto light switch precautions
• The auto light switch is turned off automatically whenever battery power is at Level
3.
• 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 of the
display. To avoid running down the battery, turn off 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 turned
on can cause frequent illumination of the display and can run down the battery.
• 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 (see “To set the time and date”), 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 you 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.
• Under certain conditions, illumination may not turn on until about one second after
you turn the face of the watch towards you. This does not necessarily indicate
malfunction of the auto light switch.
• 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.
City Code Table
City
Code
City
GMT
Differential
–––
HNL
ANC
Honolulu
Anchorage
–11.0
–10.0
–09.0
LAX
Los Angeles
–08.0
DEN
Denver
–07.0
CHI
Chicago
–06.0
NYC
New York
–05.0
CCS
RIO
–––
–––
GMT
LON
PAR
BER
ATH
CAI
JRS
JED
THR
DXB
KBL
KHI
DEL
DAC
RGN
BKK
Caracas
Rio De Janeiro
–04.0
–03.0
–02.0
–01.0
London
Paris
Berlin
Athens
Cairo
Jerusalem
Jeddah
Tehran
Dubai
Kabul
Karachi
Delhi
Dhaka
Yangon
Bangkok
+00.0
HKG
Hong Kong
SEL
TYO
ADL
SYD
NOU
WLG
Seoul
Tokyo
Adelaide
Sydney
Noumea
Wellington
+01.0
+02.0
+03.0
+03.5
+04.0
+04.5
+05.0
+05.5
+06.0
+06.5
+07.0
+08.0
+09.0
+09.5
+10.0
+11.0
+12.0
Other major cities in same time zone
Pago Pago
Papeete
Nome
San Francisco, Las Vegas, Vancouver,
Seattle/Tacoma, Dawson City, Tijuana
El Paso, Edmonton, Culiacan
Houston, Dallas/Fort Worth,
New Orleans, Mexico City, Winnipeg
Montreal, Detroit, Miami, Boston,
Panama City, Havana, Lima, Bogota
La Paz, Santiago, Port Of Spain
Sao Paulo, Buenos Aires, Brasilia, Montevideo
Praia
Dublin, Lisbon, Casablanca, Dakar, Abidjan
Milan, Rome, Madrid, Amsterdam, Algiers, Hamburg,
Frankfurt, Vienna, Stockholm
Helsinki, Istanbul, Beirut, Damascus,
Cape Town
Kuwait, Riyadh, Aden, Addis Ababa, Nairobi, Moscow
Shiraz
Abu Dhabi, Muscat
Male
Mumbai, Kolkata
Colombo
Jakarta, Phnom Penh, Hanoi, Vientiane
Singapore, Kuala Lumpur, Beijing, Taipei, Manila, Perth,
Ulaanbaatar
Pyongyang
Darwin
Melbourne, Guam, Rabaul
Port Vila
Christchurch, Nadi, Nauru Island
• Based on data as of June 2005.
6
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