Casio 3107 User Manual

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MO0905-EA
Operation Guide 3107

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
Bright Light
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Solar cell
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 result in some watch functions to be disabled. If the battery goes dead, you will have to re-configure watch settings after recharging. To ensure normal watch operation, be sure to keep it exposed to light as much as possible.
Battery charges in the light. Battery discharges in the dark.
Solar cell (Converts light to electrical power.)
Charge
The electricity generated by the solar cell of the watch is stored by a built-in battery. Leaving or using the watch where
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it is not exposed to light causes the battery to run down.
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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.
Bright Light
Electrical energy
All
LEVEL 1
functions
LEVEL 2
enabled
LEVEL 3
LEVEL 4
Rechargeable battery
charge
Dis-
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
Some or all functions disabled
The actual level at which some functions are disabled depends on the watch model.
Frequent display illumination can run down the battery quickly and require charging.
The following guidelines give an idea of the charging time required to recover from a single illumination operation.
Approximately 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.
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.
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.

General Guide

Press C to change from mode to mode.
In any mode (except when a setting screen is on the display), press B to illuminate
the display for about one second.
Timekeeping Mode
Press C.

Radio-controlled Atomic Timekeeping

Month – Day
PM indicator
Home Time (Hour : Minutes Seconds)
When using the watch outside the areas covered by the time signal transmitters, you will have to adjust the current time setting manually as required. See “Timekeeping” for more information about manual time settings.
The U.S. time calibration signal can be picked up by the watch while in North America. The term “North America” in this manual refers to the area that consists of Canada, the continental United States, and Mexico.
To specify your Home City
City Code LIS LON MAD PAR ROM BER STO
City code
German/U.K. Signal Japan Signal U.S. Signal
City Name
Lisbon London Madrid Pari s Rome Berlin Stockholm
3. Press A to exit the setting screen.
This watch receives a time calibration signal and updates its time setting accordingly.
Supported time calibration signals: Germany (Mainflingen), England (Anthorn), United States (Fort Collins), Japan.
Current Time Setting
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 specify your Home City (the city where you normally will use the watch). For more information, see “To specify your Home City”.
1. In the Timekeeping Mode, hold down A the city code
starts to flash. This is the setting screen.
2. Press D(east) and B(west) to select the city code you
want to use as your Home City.
Time calibration signal reception is supported when any one of the city codes shown in the table below is selected as your Home City.
City Code ATH MOW
City Name
Athens Moscow
City Code HKG BJS TPE SEL TYO
City Name
Hong Kong Beijing Taipei Seoul Tokyo
City Code HNL ANC YVR LAX YEA DEN MEX
City Name
Honolulu Anchorage Vancouver Los Angeles Edmonton Denver Mexico City
City Code YWG CHI MIA YTO NYC YHZ YYT
City Name
Winnipeg Chicago Miami Toronto New York Halifax St. Johns
Stopwatch ModeWorld Time Mode
Countdown Timer ModeAlarm Mode
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.
The watch will receive the time calibration signal automatically from the applicable transmitter (in the middle of the night) and update its settings accordingly. For information about the relationship between city codes and transmitters, see “Home City Codes and Transmitters”.
Under factory default settings, auto receive is turned off for all of the following city codes: MOW (Moscow), HKG (Hong Kong), BJS (Beijing), HNL (Honolulu), and ANC (Anchorage). For details about turning on auto receive for these city codes, see “To turn auto receive on and off”.
You can disable time signal reception, if you want. See “To turn auto receive on and off” for more information.
See the maps under “Approximate Reception Ranges” for information about the reception ranges of the watch.
If you are in an area that does not use Daylight Saving Time (summertime), turn off the DST setting.
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
With auto receive, the watch receives the time calibration signal automatically up to six times a day. When any auto receive is successful, the remaining auto receive operations are not performed. 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. This watch is designed to receive a time calibration signal late at night. Because of this, you should place the watch near a window as shown in the illustration when you take it off at night. Make sure there are no metal objects nearby.
12 oclock
or
Make sure the watch is facing the right way.
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Operation Guide 3107
Proper signal reception can be difficult or even impossible under the conditions listed below.
Inside or among buildings
Signal reception normally is better at night than during the day.
Time calibration signal reception takes from two to seven minutes, but in some
cases it can take as long as 14 minutes. Take care that you do not perform any button operations or move the watch during this time.
The time calibration signal the watch will attempt to pick up depends on its current Home City code setting as shown below. If you use the watch in Japan or Europe (each of which has two different transmitter locations), it will try to receive the time calibration signal from one of the transmitters in your current location. If it cannot receive the signal, it will then try to receive the time calibration signal from the other transmitter.
Inside a vehicle
Near household appliances, office equipment, or a mobile phone
Near a construction site, airport, or other sources of electrical noise
Near high­tension power lines
Among or behind mountains
Home City Codes and Transmitters
Home City Code
LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW*
HKG*, BJS*, TPE, SEL, TYO
HNL*, ANC*, YVR, LAX, YEA, DEN, MEX, YWG, CHI, MIA, YTO, NYC,YHZ, YYT
* The areas covered by the MOW, HKG, BJS, HNL, and ANC city codes are quite
far from the time calibration signal transmitters, and so certain conditions may cause problems with signal reception.
Transmitter
Anthorn (England) Mainflingen (Germany)
Fukushima (Japan) Fukuoka/Saga (Japan)
Fort Collins, Colorado (the United States)
Approximate Reception Ranges
U.K. and German Signals
1,500 kilometers
Anthorn
500 kilometers
The Anthorn signal is receivable within this area.
500 kilometers
Fukuoka/Saga
1,000 kilometers
Mainflingen
U.S. Signal
Frequency
60.0 kHz
77.5 kHz
40.0 kHz
60.0 kHz
60.0 kHz
2,000 miles (3,000 kilometers)
600 miles (1,000 kilometers)
Fort Collins
500 kilometers
Fukushima
1,000 kilometers
Japan Signal
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)
Even when the watch is within the reception range of the transmitter, signal reception will be 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 Reception Troubleshooting” if you experience problems with time calibration signal reception.
About Auto Receive
The watch receives the time calibration signal automatically up to six times a day. When any auto receive is successful, the remaining auto receive operations are not performed. The reception schedule (calibration times) depends on your currently selected Home City, and whether standard time or Daylight Saving Time is selected for your Home City.
Your Home City Auto Receive Start Times
LIS, LON
MAD, PAR, ROM, BER, STO
ATH
MOW
HKG, BJS, TPE, SEL, TYO
HNL, ANC, YVR, LAX, YEA, DEN, MEX, YWG, CHI, MIA, YTO, NYC, YHZ, YYT
Standard Time
Daylight Saving Time
Standard Time
Daylight Saving Time
Standard Time
Daylight Saving Time
Standard Time
Daylight Saving Time
Standard Time
Standard Time Daylight
Saving Time
123456
1:00 am
2:00 am
3:00 am
4:00 am
5:00 am
Midnight
2:00 am
2:00 am
3:00 am
3:00 am
4:00 am
4:00 am
5:00 am
Midnight
Midnight
3:00 am
3:00 am
4:00 am
4:00 am
5:00 am
5:00 am
Midnight next day
1:00 am
1:00 am
4:00 am
4:00 am
5:00 am
5:00 am
Midnight next day
Midnight next day
1:00 am next day
2:00 am
2:00 am
5:00 am
5:00 am
Midnight next day
Midnight next day
1:00 am next day
1:00 am next day
2:00 am next day
3:00 am
3:00 am
Midnight next day
Midnight next day
1:00 am next day
1:00 am next day
2:00 am next day
2:00 am next day
3:00 am next day
4:00 am
4:00 am
next day 1:00 am
next day 1:00 am
next day 2:00 am
next day 2:00 am
next day 3:00 am
next day 3:00 am
next day 4:00 am
next day 5:00 am
5:00 am
Note
When a calibration time is reached, the watch will receive the calibration signal only if it is in either the Timekeeping Mode or World Time Mode. Reception is not performed if a calibration time is reached while you are configuring settings.
Auto receive 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.
Remember that reception of the calibration signal depends on the current time 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 displayed time actually is the correct time.
Calibration signal reception is disabled while a countdown timer operation is
in progress.
About the Signal Strength Indicator
The signal strength 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. The signal strength indicator is displayed while an auto or manual receive operation is in progress.
Settings updated indicator
Weak
(Level 0)
Signal strength indicator
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 signal strength 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 settings updated indicator will remain on the display in all modes. The settings updated indicator will not be displayed if signal reception was unsuccessful or after you adjust the current time setting manually.
The settings updated 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 settings updated indicator indicates that at least one of the auto calibration signal receive operations was successful. Note, however, that the settings updated indicator disappears from the display each day when the first auto receive operation of the day is performed.
To perform manual receive
Receiving
Receive successful
Receive date
Receive time
Receive failed
To turn auto receive on and off
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On/Off status
To check the latest signal reception results
Receive date
Receive time
1. Enter the Timekeeping Mode.
2. Place the watch on a stable surface so its 12 o’clock side is facing towards a window.
3. Hold down D for about two seconds until RC! appears on the display.
Time calibration signal reception takes from two to
seven minutes. Take care that you do not perform any button operations or move the watch during this time.
If the receive operation is successful, the reception date
and time appear on the display, along with the GET indicator. The watch will enter the Timekeeping Mode if you press D or if you do not perform any button operation for about two or three minutes.
If the current reception fails but a previous reception was
successful, the display shows the previous reception’s date and time, and the ERR indicator.
- - : - - indicates that none of the reception operations were successful. The watch will enter the Timekeeping Mode without changing the time setting if you press D or if you do not perform any button operation for about two or three minutes.
1. In the Timekeeping Mode, press D to display the Last Signal screen.
2. Hold down A for about two seconds until RCV appears on the display.
The current auto receive setting (on or OFF) will flash.
Note that the setting screen will not appear if the
currently selected Home City is one that does not support time calibration reception.
3. Press D to toggle auto receive on (on) and off (OFF).
4. Press A to exit the setting screen.
For information about city codes that support signal
receive, see “To specify your Home City”.
In the Timekeeping Mode, press D to display the Last Signal screen.
When receive is successful, the display shows the time
and date that receive was successful. - - : - - indicates that none of the reception operations were successful.
To return to the Timekeeping Mode, press D.
Strong
(Level 3)
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Operation Guide 3107
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Problem
Cannot perform manual receive.
Auto receive is turned on, but the settings updated indicator does not appear on the display.
Time setting is incorrect following signal reception.
For further information, see “Important!” under “Time Calibration Signal Reception” and “Radio-controlled Atomic Timekeeping Precautions”.
Probable Cause
The watch is not in the Timekeeping Mode.
Your current Home City is not one of the following:
LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW, HKG, BJS, TPE, SEL, TYO, HNL, ANC,YVR, LAX, YEA, DEN, MEX, YWG, CHI, MIA, YTO, NYC, YHZ, or YYT
You changed the time setting manually.
The DST setting was changed manually
in the World Time Mode.
You pressed a button while signal receive was in progress.
Even if receive is successful, the settings updated indicator disappears from the display each day when the first auto receive operation of the day is performed.
Time data (hour, minutes, seconds) only was received during the last receive operation. The settings updated indicator appears only when time data and date data (year, month, day) are both received.
If the time is one hour off, the DST setting may be incorrect.
The Home City code setting is not correct for the area where you are using the watch.
What you should do
Enter the Timekeeping Mode and try again.
Select LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW, HKG, BJS, TPE, SEL, TYO, HNL, ANC, YVR, LAX, YEA, DEN, MEX, YWG, CHI, MIA, YTO, NYC, YHZ, or YYT 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.

World Time

City code
Current time in selected city
To toggle a city code time between Standard Time and Daylight Saving Time
DST indicator
The World Time Mode shows you the current time in 48 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.
To view the time in another city
While in the World Time Mode, press D to scroll eastward through the city codes (time zones).
For full information on city codes, see the “City Code Table”.
1. In the World Time Mode, use D to display the 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).
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.

Stopwatch

Hours
1/100 second
Minutes
Seconds
To measure times with the stopwatch
Elapsed Time
D
Start Stop
Split Time
D
Start Split
Two Finishes
D
Start Split
The stopwatch lets you measure elapsed time, split times, and two finishes. It also includes Auto-Start.
The display range of the stopwatch is 999 hours, 59 minutes, 59.99 seconds.
The stopwatch continues to run, restarting from zero after it reaches its limit, until you stop it.
The stopwatch measurement operation continues even if you exit the Stopwatch Mode.
Exiting the Stopwatch Mode while a split time is frozen on the display clears the split time and returns to elapsed time measurement.
All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing C.
D
A
(SPL displayed)
A
First runner finishes. Display time of first runner.
D
Re-start Clear
A
Split release
D
Stop
Second runner finishes.
D
Stop
D
Stop
A
Split release
Display time of second runner.
A
A
Clear
A
Clear
About Auto-Start
With Auto-Start, the watch performs a 5-second countdown, and stopwatch operation starts automatically when the countdown reaches zero. During the final three seconds of the countdown, a beeper sounds with each second.
To use Auto-Start
1. While the stopwatch screen is showing all zeros in the
Stopwatch Mode, press A.
This displays a 5-second countdown screen.
To return to the all zeros screen, press A again.
2. Press D to start the countdown.
When the countdown reaches zero, a tone sounds and a stopwatch timing operation starts automatically.
Pressing D while the Auto-Start countdown is in progress starts the stopwatch immediately.

Countdown Timer

Timekeeping Mode time
1/10 secondMinutes
Seconds
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 A. This returns the countdown time to its starting value.
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.

Alarms

Timekeeping Mode time
Alarm number
Alarm time (Hours : Minutes)
To set an alarm time
You can configure Alarm1 as a snooze alarm or a one-time alarm. Alarms 2 through 5 can be used as one-time alarms only.
The snooze alarm repeats every five minutes.
2. After you select an alarm, hold down A until the hour setting of the alarm time
starts to flash. This indicates the setting screen.
3. Press C to move the flashing between the hour and minute settings.
4. While a setting is flashing, use D (+) and B (–) to change it.
When setting the alarm time using the 12-hour format, take care to set the time correctly as a.m. (no indicator) or p.m. (P indicator).
5. Press A to exit the setting screen.
Alarm Operation
The alarm sounds at the preset time for about 10 seconds. 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 or change it to a one-time alarm.
Note
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.
Displaying the Timekeeping Mode setting screen Displaying the Alarm
To test the alarm
In the Alarm Mode, hold down D to sound the alarm.
You can set five independent Daily Alarms. When an alarm is turned on, the alarm tone sounds when the alarm time is reached. One of the alarms can be configured as a snooze alarm or a one-time alarm, while the other four are one-time alarms. You can also turn on an Hourly Time Signal that causes the watch to beep twice every hour on the hour.
There are five alarm screens numbered1 through 5. The hourly time signal screen is indicated by :00
When you enter the Alarm Mode, the screen you were viewing when you last exited the mode appears first.
All of the operations in this section are performed in the Alarm Mode, which you enter by pressing C.
1. In the Alarm Mode, use D to scroll through the alarm
screens until the one whose time you want to set is displayed.
x1 x2
:00 x5
1
setting screen
x3
x4
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Operation Guide 3107
To turn Alarms 2 through 5 on and off
One-time alarm on indicator
To select the operation of Alarm
1. In the Alarm Mode, use D to select Alarm1.
2. Press A to cycle through the available settings in the sequence shown below.
The applicable alarm on indicator is displayed in all modes when an alarm is turned
The snooze alarm on indicator flashes during the 5-minute intervals between alarms.
Displaying the Alarm1 setting screen while the snooze alarm is turned on
Snooze alarm on indicator and one-time alarm on indicator
One-time alarm on Snooze alarm on Alarm off
on.
automatically turns off the snooze alarm (making Alarm1 a one-time alarm).
To turn the hourly time signal on and off
Hourly time signal on indicator
1. In the Alarm Mode, use D to select a one-time alarm
(alarm number 2 through 5).
2. Press A to toggle the displayed alarm on and off.
Turning on a one-time alarm (2 through 5) displays the
one-time alarm on indicator on its screen.
The one-time alarm on indicator is displayed in all modes.
If any alarm is on, the one-time alarm on indicator is shown on the display in all modes.
1
1. In the Alarm Mode, use D to select the Hourly Time
Signal (:00).
2. Press A to toggle it on and off.
Turning on the Hourly Time Signal displays the hourly time signal on indicator on its screen.
The hourly time signal on indicator is displayed in all modes when the Hourly Time Signal is turned on.

Illumination

The watch has an EL (electro-luminescent) panel that causes the entire display to glow for easy reading in the dark.
See “Illumination Precautions” for other important information.
To turn on illumination
In any mode (except when a setting is on the display), press B to illuminate the display for about one second.

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.
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.
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 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 5 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.
Battery Power Indicator and Charge Indicator
The battery power indicator shows you the current power level of the rechargeable battery.
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Battery power indicator
Level
Battery Power Indicator
1
2
3
(Charge Soon Alert)
4
(Charge Soon Alert)
5
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Solar cell
Function Status
All functions enabled.
All functions enabled.
Alarm, hourly time signal, illumination and time calibration signal reception disabled.
All functions disabled.
All functions, including timekeeping, disabled and initialized.
The flashes on the display in the Timekeeping Mode when battery is at Level 3.
The
At Level 5, all functions are disabled and settings return to their initial factory
If you use the illumination or alarms a number of times during a short period, the
Charging Precautions
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
Charging Guide
After a full charge, timekeeping remains enabled for up to about nine months.
The following table shows the amount of time the watch needs to be exposed to light
For details about the battery operating time and daily operating conditions, see the
Stable operation is promoted by frequent exposure to light.
Recovery Times
The table below shows the amount exposure that is required to take the battery from one level to the next.
The above exposure time values are all for reference only. Actual required exposure
at Level 3 and the flashing charge indicator (CHG) at Level 4 tell you that battery power is very low, and that exposure to bright light for charging is required as soon as possible.
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 4 (indicated by the flashing charge indicator (CHG)) from Level 5. You will not be able to configure any of the other settings until the battery reaches Level 3 (no charge indicator) after dropping to Level 5. 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 momentar ily higher than the actual battery level. The correct battery power indicator should appear after a few minutes.
charge indicator (CHG) flashes and the following operations become disabled until battery power recovers.
Illumination Beeper tone Time calibration signal reception
After some time, battery power will recover and the charge indicator (CHG) will disappear, indicating that the above functions are enabled again.
each day in order to generate enough power for normal daily operations.
Exposure Level (Brightness)
Outdoor Sunlight (50,000 lux)
Sunlight Through a Window (10,000 lux)
Daylight Through a Window on a Cloudy Day (5,000 lux)
Indoor Fluorescent Lighting (500 lux)
“Power Supply” section of the Specifications.
Exposure Level (Brightness)
Outdoor Sunlight (50,000 lux)
Sunlight Through a Window (10,000 lux)
Daylight Through a Window on a Cloudy Day (5,000 lux)
Indoor Fluorescent Lighting (500 lux)
times depend on lighting conditions.
Approximate Exposure Time
Level 5 Level 4 Level 3 Level 2 Level 1
Approximate Exposure Time
5 minutes
24 minutes
48 minutes
8 hours
2 hours
6 hours
9 hours
95 hours
124 hours
201 hours
33 hours
9 hours
34 hours
56 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 12/24-hour format, and power saving on/off, and you can specify the screens that are displayed in the Timekeeping Mode.
In the Timekeeping Mode, you can press A to toggle the display contents as shown below.
Date
Month – Day
Press A.
Pressing D in the Timekeeping Mode will display the Last Signal screen.
Press D.
Day of the Week
Day of week
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Operation Guide 3107
Setting the Time and Date Manually
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 manually
City code
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City Code
Power Saving
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:
TYO
See “City Code Table” for a complete list of available city codes.
Auto DST ( ) can be selected only while LIS, LON, MAD, PAR , ROM, BER,
STO, ATH , MOW, HKG, BJS, TPE, SEL, TYO, HNL, ANC, YVR, LAX, YEA, DEN, MEX, YWG, CHI, MIA, YTO, NYC, YHZ, or YYT 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.
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 Mainflingen (Germany), Anthorn (England), or Fort Collins (the United States) 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 signals.
The time calibration signals transmitted from Fukushima and Fukuoka/Saga (Japan) do not include summer time data.
The default DST setting is Auto DST (
PAR , ROM, BER, STO, ATH , MOW, HKG, BJS, TPE, SEL, TYO, HNL, ANC, YVR, LAX, YEA, DEN, MEX, YWG, CHI, MIA, YTO, NYC, YHZ, or YYT as your Home City
code.
If you experience problems receiving the time calibration signal in your area, it probably is 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 ( ) DST off ( ) DST 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.
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
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Change the city code
Cycle between auto DST ( ), Standard Time ( Daylight Saving Time (
Toggle between 12-hour (12H) and 24-hour (
Reset the seconds to
Change the hour or minutes
Change the year, month, or day
Toggle Power Saving on ( ) and off ( )
sequence shown below to select other settings.
DST
Day
12/24-Hour Forma t
Month Year
), and
24H) timekeeping
Do this:
Use D (east) and B (west).
Press D.
)
Press D.
Press D.
Use D (+) and B (–).
Press D.
) whenever you select LIS, LON, MAD,
Seconds
Hour
Minutes

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.
Button Operation Tone
Mute indicator
The button operation tone sounds any time you press one of the watch’s buttons. You can turn the button operation tone on or off as desired.
Even if you turn off the button operation tone, the alarm, Hourly Time Signal, and Countdown Timer Mode alarm all operate normally.
To turn the button operation tone on and off
In any mode (except when a setting screen is on the display), hold down C to toggle the button operation tone on (mute indicator not displayed) and off (mute indicator displayed).
Since the C button is also the mode change button, holding it down to turn the
button operation tone on or off also causes the watch’s current mode to change.
The mute indicator is displayed in all modes when the button operation tone is turned off.
Power Saving Function
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Power saving indicator
Elapsed Time
in Dark
60 to 70 minutes
6 or 7 days
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 9:59 PM. If the watch
is already in the sleep state when 6:00 AM arrives, however, it will remain in the sleep state.
To recover from the sleep state
Perform any one of the following operations.
Move the watch to a well-lit area.
Press any button.
To turn Power Saving on and off
On/Off status
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Auto Return Features
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 are used in various modes and setting screens to scroll through data. In most cases, holding down these buttons during a scroll operation 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.
Radio-controlled Atomic 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 a 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 with the precision noted in “Specifications”.
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.
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
The day of the week is displayed automatically in accordance with the date (year,
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
The times for the Timekeeping Mode and all the city codes of the World Time Mode
The UTC differential is a value that indicates the time difference between a
The letters “UTC” is the abbreviation for “Universal Time Coordinated”, which is the
without changing the minutes.
month, and day) settings.
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 5.
are calculated in accordance with each city’s UTC differential.
reference point in Greenwich, England and the time zone where a city is located.
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.
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.
Display
Blank, with Power Saving indicator (PS) flashing
Blank, with Power Saving indicator (PS) not flashing
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 (
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4. Press A to exit the setting screen.
The Power Saving indicator (PS) is on the display in all modes while Power Saving is turned on.
All functions enabled, except for the display
Beeper tone, illumination, and display are disabled.
Operation
) and off
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Operation Guide 3107
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.

Specifications

Accuracy at normal temperature: ± 30 seconds a month (with no signal calibration) Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week
Time system: Switchable between 12-hour and 24-hour formats Calendar system: Full Auto calendar pre-programmed from the year 2000 to 2099 Other: Home city code (can be assigned one of 48 city codes); Daylight
Time Calibration Signal Reception: Auto receive up to six times a day (remaining
World Time: 48 cities (29 time zones)
Stopwatch
Countdown Timer
Alarms: 5 daily alarms (Four one-time alarms; one snooze/one-time alarm); Hourly
Illumination: EL (electronic-luminescent panel) Other: Battery power indicator; Power Saving; Button operation tone on/off
Power Supply: Solar cell and a rechargeable battery
Saving Time (summer time)/Standard Time
auto receives cancelled as soon as one is successful); Manual Receive; Last Signal screen
Receivable Time Calibration Signals: Mainflingen, Germany (Call Sign: DCF77,
Frequency: 77.5 kHz); Anthorn, England (Call Sign: MSF, Frequency: 60.0 kHz); Fort Collins, Colorado, the United States (Call Sign: WWVB, Frequency: 60.0 kHz); Fukushima, Japan (Call Sign: JJY, Frequency: 40.0 kHz); Fukuoka/Saga, Japan (Call Sign: JJY, Frequency: 60.0 kHz)
Other: Standard Time/Daylight Saving Time (summer time)
Measuring unit: 1/100 second Measuring capacity: 999:59' 59.99'' Measuring modes: Elapsed time, split time, two finishes Other: Auto-Start
Measuring unit: 1/10 second Input range: 1 to 60 minutes (1-minute increments)
Time Signal
Approximate Battery Operating Time
9 months (from full charge to Level 4 when the watch is not exposed to light) under the following conditions:
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
10 minutes of signal reception per day
Frequent use of illumination can shorten battery operating time.

City Code Table

City
PPG HNL ANC YVR
LAX YEA DEN MEX YWG
CHI
MIA YTO NYC CCS* YHZ YYT
RIO
RAI
LIS LON MAD
PAR ROM BER STO
ATH
CAI
JRS MOW
JED THR DXB
KBL
KHI DEL DAC
City
Pago Pago
Honolulu Anchorage Vancouver
Los Angeles
Edmonton
Denver
Mexico City
Winnipeg
Chicago
Miami
Toronto
New York
Caracas
Halifax
St. Johns
Rio De Janeiro
Praia Lisbon London Madrid
Pari s
Rome Berlin
Stockholm
Athens
Cairo
Jerusalem
Moscow
Jeddah Tehran
Dubai Kabul
Karachi
Delhi Dhaka
Code GMT
UTC Offset/
Differential
–11 –10
–9
–8
–7
–6
–5
–4
–3.5
–3 –1
0
+1
+2
+3
+3.5
+4
+4.5
+5
+5.5
+6
City
RGN BKK HKG
BJS
TPE
SEL TYO ADL GUM SYD NOU WLG
City
Yangon
Bangkok
Hong Kong
Beijing
Taipei Seoul Tokyo
Adelaide
Guam
Sydney
Noumea
Wellington
Code GMT
Based on data as of June 2008.
The rules governing global times (UTC
offset and GMT differential) and summer time are determined by each individual country.
* In December 2007, Venezuela changed
its offset from –4 to –4.5. Note, however, that this watch displays an offset of –4 (the old offset) for the CCS (Caracas, Venezuela) city code.
UTC Offset/
Differential
+6.5
+7
+8
+9
+9.5
+10
+11 +12
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