Casio 2628 User Manual

Page 1

MO0608-EA

Operation Guide 2628

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.

••

• This watch does not have a time zone that corresponds to the Greenwich

••

Mean Time differential of –3.5 hours. Because of this, the radio-controlled timekeeping and World Time functions will not display the correct time for Newfoundland, Canada.

Keep the watch exposed to bright light

Bright Light

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 cause some watch functions to be disabled. If the battery goes dead, you will have to re-configure watch settings after recharging. To ensure normal watch operation, be sure to keep it exposed to light as much as possible.

Battery charges in the light. Battery discharges in the dark.

Solar cell (Converts light to electrical power.)

Charge

General Guide

• Press C to change from mode to mode.

• In any mode, press L to illuminate the display.

Timekeeping Mode

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.

Bright Light

Electrical energy

All

LEVEL 1

functions

LEVEL 2

LEVEL 3

Rechargeable battery

enabled

charge

Sunrise/Sunset Mode

Press C.

▲

Dis-

LEVEL 1

LEVEL 2

LEVEL 3

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 five minutes exposure to bright sunlight coming in through a window

Approximately 50 minutes exposure to indoor fluorescent lighting

• Be sure to read “Power Supply” for important information you need to know when exposing the watch to bright light.

If the display of the watch is blank...

If the display of the watch is blank, it means that the watch’s Power Saving function has turned off the display to conserve power.

• See “Power Saving Function” for more information.

About This Manual

(Light)

• Button operations are indicated using the letters shown in the illustration.

• Each section of this manual provides you with the information you need to perform operations in each mode. Further details and technical information can be found in the “Reference” section.

Bearing Mode Time Recorder Mode World Time Mode

▲

Stopwatch Mode

▲

Alarm Mode

▲

Radio-controlled Atomic Timekeeping

This watch receives a time calibration signal and updates

Day of week

indicator

Month – Day

Hour : Minutes Seconds

• The first thing you should do after purchasing this watch is to set your Home City, which is the city where you normally will use the watch. For more information, see “To set your Home City” below.

• When using the watch outside of the range of the transmitter in Fort Collins, you need to adjust the time manually as required. See “Timekeeping” for information about manual settings.

To set your Home City

E/C/M/P indicator

3. Press A twice to exit the setting screen.

• The first press of A displays the 12/24-hour setting screen. Pressing A again exits the setting screen.

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 Fort Collins, Colorado (USA). Reception is possible within North America

The term “North America” in this User’s Guide refers to the

area that consists of Canada, the continental United States, and Mexico.

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.

1. In the Timekeeping Mode, hold down A until the city

City code

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 North America.

(P (Pacific) indicator):

LAX

Los Angeles, San Francisco, Las Vegas, Seattle, Vancouver, Tijuana

(M (Mountain) indicator):

DEN

Denver, El Paso, Edmonton, Culiacan

(C (Central) indicator):

CHI

Chicago, Houston, Dallas/Fort Worth, New Orleans, Winnipeg, Mexico City

(E (Eastern) indicator):

NYC

New York, Detroit, Miami, Boston, Montreal

• Note that this watch does not have a city code that corresponds to Newfoundland.

Near hightension power lines

▲

Among or behind mountains

▲

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.

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 picks up the time calibration signal automatically five times a day at midnight, 1:00 a.m., 2:00 a.m., 3:00 a.m., and 4:00 a.m. 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.

12 o’clock

• Make sure the watch is facing the right 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 construction site, airport, or other sources of electrical noise

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Operation Guide 2628

• Signal reception normally is better at night than during the day.

• Time calibration signal reception takes from two to six minutes. Take care that you

do not perform any button operations or move the watch during this time.

Reception Range

600 miles

• At distances further than about 600 miles (1,000 kilometers) from the transmitter, signal reception may not be possible during certain times of year or times of day. Radio interferance 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.

About Auto Receive

When auto receive is turned on, the watch starts to receive the time calibration signal automatically when the time in the Timekeeping Mode reaches midnight, 1:00 a.m., 2:00 a.m., 3:00 a.m., and 4:00 a.m. each day (calibration times). The watch will also perform an additional auto receive at 5:00 a.m. if none of the regularly scheduled auto receives are successful.

Note

• The auto receive operation is performed only if the watch is in the Timekeeping Mode or World Time Mode when one of the calibration times is reached. It is not performed if a calibration time is reached while an alarm is sounding, or while you are configuring settings (while settings are flashing on the display).

• 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.

• 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. Avoid performing 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 actually is the correct time.

• When two, three, or four receptions are successful, the watch uses the data of the last reception for calibration. When only one reception is successful, the watch uses the data of the successful reception.

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.

Weak

• Use the receiving indicator as a guide for checking signal strength and for finding the

• Even in an area where signal strength is strong, it takes about 10 seconds for signal

• Following reception of the time calibration signal and calibration of the watch’s time

• The Level 4 receiving indicator is displayed only when the watch is able to receive

• The Level 4 receiving indicator indicates that at least one of the auto calibration

Receiving indicator

best location for the watch during signal receive operations.

reception to stabilize enough for the receiving indicator to indicate signal strength.

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.

both time and date data successfully. It does not appear when only time data is received.

signal receive operations was successful. Note, however, that the Level 4 receiving indicator is cleared from the display at 3:00 a.m. each day.

To perform manual receive

Receiving indicator

Note

• To interrupt a receive operation and return to the Timekeeping Mode, press D.

• If the receive operation is unsuccessful, the message

for about one or two minutes. After that, the watch returns to the Timekeeping Mode.

• You can also change from the Last Signal or timekeeping screen by pressing D.

To turn auto receive on and off

On/off status

(Level 1)

1. Place the watch on a stable surface so its top (12 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

that signal reception has started.

• Time calibration signal reception takes from two to six

minutes. Take care that you do not perform any button operations or move the watch during this time.

• After signal reception is complete, the display of the

watch changes to the Last Signal screen.

1. In the Timekeeping Mode, hold down A until the city code starts to flash, which indicates the setting screen.

2. Press C twice to move the flashing to the auto receive on/off setting.

3. Press D to toggle auto receive on (ON) and off (OFF).

• If the current Home City setting is a city code that

does not support signal receive, “xx” appears in place of the on/off indicator. This means you cannot turn auto receive on or off.

4. Press A twice to exit the setting screen.

• For information about city codes that support signal

receive, see “To set your Home City”.

2,000 miles

Fort Collins

RC! appears to indicate

ERR appears on the display

ERR screen to the normal

Strong

(Level 4)

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.

• If you do not press D to return from the last signal screen to the timekeeping

screen, the watch will return automatically after about two or three minutes.

Day of week

indicator

Press D.

▲

Timekeeping Screen

Signal Receive Troubleshooting

Check the following points whenever you experience problems with calibration signal reception.

Problem

Cannot perform manual receive.

Auto receive is turned on, but the Level 4 receiving 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”.

Month – DayHour : Minutes Seconds

Probable Cause

•

The watch is not in the Timekeeping Mode.

• Your current Home City is not one of the following city codes: LAX, DEN, CHI, or NYC.

• You changed the time setting manually.

• The watch was not in the Timekeeping

or World Time Mode, or you performed some button operation during the auto receive operation.

•

Even if receive is successful, the Level 4 receiving indicator disappears every day at 3 am.

• 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.

• 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.

Receive time

▲

Receive date

Last Signal Screen

What you should do

• Enter the Timekeeping Mode and try again.

• Select LAX, DEN, CHI, or NYC 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.

Sunrise/Sunset Mode

Sunrise/

Sunrise time

• All of the operations in this section are performed in the Sunrise/Sunset Mode,

To specify a city code to check its sunrise and sunset times

1. Enter the Timekeeping Mode.

2. Hold down A until the current city code setting starts to flash. This is the setting

3. Use D (Eastward) and B (Westward) to select the city code whose sunrise and

4. Press A twice to exit the setting screen.

Sunset graph

Sunset time

which you enter by pressing C.

screen.

sunset times you want to view.

• For details about city codes, see the “City Code Table”.

To configure longitude, latitude and GMT differential settings

Longitude/Latitude

Setting Screen

▲

Press C.

▲

GMT Differential

Setting Screen

You can use the Sunrise/Sunset Mode to display the sunrise and sunset times for a particular date (year, month, day) specified by you.

• Before trying to use the Sunrise/Sunset Mode, you need to configure settings for the city code, longitude, latitude, and GMT differential for the location whose sunrise and sunset times you want to view.

• The factory default configuration of the location is: Latitude: North 35 degrees; Longitude: East 140 degrees; GMT Differential: +9 hours.

• You can find latitude, longitude, and GMT differential for various cities around the globe in the “Site Data List”.

• The sunrise and sunset information that initially appears when you enter the Sunrise/Sunset Mode is that for the current date as kept in the Timekeeping Mode.

1. Enter the Sunrise/Sunset Mode.

2. Hold down A to cycle through the screens until the

longitude/latitude setting screen appears.

3. Use B to set the longitude and D to set the latitude.

• Pressing the buttons will change the longitude and latitude values as shown below.

Press this button:

Longitude

Latitude

4. Press C to display the GMT differential setting screen.

5. Use D (+) and B (–) to change the GMT differential in

0.5 hour increments.

6. Press A to exit the setting screen.

• This will cause the display to show the date (year, month, and day), followed by the sunrise and sunset time for that date.

To cycle the value in this sequence:

179°W to 1°W, 0 °E to 180°E 65°S to 1°S, 0°N to 65°N

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Operation Guide 2628

To view the sunrise/sunset time for a particular date

Sunrise time

Sunset time

Note

• Sunrise/sunset time is displayed in 5-minute units.

• If you think that the sunrise and/or sunset times are not correct for some reason,

check the watch’s city code, longitude, latitude, and GMT defferential settings.

• The sunrise and sunset times displayed by this watch are times at sea level. Sunrise and sunset times are different at altitudes other than sea level.

Sunrise/Sunset Graphic

In the Sunrise/Sunset Mode, the graphic in the upper right corner of the display shows the daylight hours and nighttime hours for the currently selected date. In the Timekeeping Mode, the graphic shows the daylight hours and nighttime hours for today’s date.

• The dark segments of the graphic indicate nighttime hours, while the light segments indicate daytime hours.

• The flashing segment in the graphic in the Timekeeping Mode is the one that represents the current time.

• Each graphic segment represents one hour.

Sunrise time

10:00

9:00

8:00

7:00

6:00

5:00

4:00

3:00

2:00

Sunrise/Sunset Mode Graphic Timekeeping Mode Graphic

1. Enter the Sunrise/Sunset Mode.

• This will display the sunrise and sunset times for the current date (as kept by the Timekeeping Mode) at the location specified by the city code, latitude, longitude, and GMT differential you specified using the procedure under “To specify a city code to check its sunrise and sunset times” and “To configure longitude, latitude and GMT differential settings”.

2. While the sunrise/sunset time are on the display, use

D (+) and B (–) to scroll through the dates.

• The date (year, month, and day) will appear first, followed by the sunrise and sunset time for that date.

• You can select any date between January 1, 2000 and December 31, 2099.

12:00

11:00

13:00

14:00

Sunset time

15:00

16:00

17:00

18:00

19:00

20:00

21:00

22:00

23:00

1:00

0:00

Current time

22:00

Bearing Mode

Solar azimuth

Important!

Before trying to use this watch to calculate the solar azimuth, make sure to check that the following settings are configured correctly for your current location.

City code and current time settings

Longitude, latitude, and GMT differential The above settings used by this operation are the same as those you configure to calculate sunrise and sunset times. If you have already configured these settings for sunrise/sunset operations, you need only to configure the solar traverse directions here.

• The factory default configuration of the Bearing Mode settings is:

Latitude: North 35 degrees; Longitude: East 140 degrees; GMT Differential: +9 hours; Solar Traverse Direction: South.

• Note that you cannot use the Bearing Mode to determine directions in the following

cases.

When the sun is not visibl At night When sun traverses the sky directly overhead or when you cannot determine if it traverses to the north or south

To set the solar traverse directions

To determine your bearings

1. Enter the Bearing Mode.

• The watch uses the solar traverse directions, along with the watch’s location setup (city code, date, time, longitude, latitude, GMT differential) to calculate and display the current solar azimuth.

2. Find the same value on the bezel as the angle value displayed for the solar azimuth on the Bearing Mode screen.

3. Position the watch so the value you found in step 1 is pointing at the sun.

4. The 12 o’clock position of the watch should now be pointed towards true north.

• Note that the bearings produced by the Bearing Mode are intended for general

reference only.

The Bearing Mode lets you determine approximate directions using a displayed angle value that indicates the angle to the sun (solar azimuth).

• All of the operations in this section are performed in the

Bearing Mode, which you enter by pressing C.

1. In the Bearing Mode, hold down A until N or S flashes

on the display. This indicates the setting screen.

2. Press D to toggle the setting between N (north) and S

(south).

3. Press A to exit the setting screen.

• The watch uses the solar traverse directions specified by you, along with the watch’s location setup (city code, date, time, longitude, latitude, GMT differential) to calculate and display the solar azimuth.

Bezel

180

North

Time Recorder

Time recorder graphic

Time record number

Recorded date (Month – Day)

Recorded time (Hour : Minutes Seconds)

• Storing a new time record when there are already 30 records stored in memory automatically deletes record stores the new record as

To recall Time Recorder times

In the Time Recorder Mode, use B (+) and D (–) to scroll through times stored in memory.

• If you recorded a new Time Recorder time since you last entered the Time Recorder Mode, the newest record appears first. If you have not recorded a new time, the record you were viewing when you last exited the Time Recorder Mode appears first.

To delete all Time Recorder times

In the Time Recorder Mode, hold down A to delete all Time Recorder times.

Time Recorder Graphic

In the Time Recorder Mode in the upper right corner of the display indicates hours that has a Time Recorder record.

• A dark segment indicates an hour that has a Time Recorder record.

• Each graphic segment represents one hour.

10:00

9:00

8:00

7:00

6:00

5:00

4:00

3:00

2:00

The Time Recorder lets you store up to 30 records of the current time (month, day, hour, minutes, seconds, and DST on/off setting) with the touch of a button. One way you can use the Time Recorder is to record the start time and the end time of a particular event.

To record a Time Recorder time

In the Timekeeping Mode, hold down B to record the Home City time (month, day, hour, minutes, seconds, and DST on/off setting).

• The recorded time flashes for about two seconds, and then it is assigned a record number. After that, the Timekeeping Mode screen appears.

• Records are assigned numbers sequentially from through #30.

#01, shifts the remaining records upwards by 1, and

#30.

12:00

11:00

13:00

14:00

15:00

16:00

17:00

18:00

19:00

This hour has a Time

20:00

Recorder record.

1:00

0:00

23:00

22:00

21:00

#01

World Time

City code

Timekeeping Mode time

Current time in the selected city code

To view the time for another city code

While in the World Time Mode, press D to scroll through the city codes (time zones) to the east or B to scroll to the west.

• If the current time shown for a city is wrong, check your Timekeeping Mode time and Home City settings and make the necessary changes.

To toggle a city code time between Standard Time and Daylight Saving Time

DST indicator

• Daylight Saving Time (DST) advances the time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time.

• The watch will perform a signal receive operation even if it is in the World Time Mode when a calibration time is reached. If this happens, the World Time Mode time settings will be adjusted in accordance with the Home City time.

World Time shows the current time in 30 cities (29 time zones) around the world.

• For full information on city codes, see the “City Code Ta bl e ”.

• The current time for all city codes in the World Time Mode is calculated in accordance with the Greenwich Mean Time (GMT) differential for each city, based on your Home City time setting.

• All of the operations in this section are performed in the World Time Mode, which you enter by pressing C.

1. In the World Time Mode, use B and 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 is on the display 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.

• Daylight Saving Time (DST) cannot be turned on and off while GMT is selected as the city code.

Alarms

Alarm number

Timekeeping Mode time

Alarm time (Hour : 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 and

SNZ. You can configure SNZ as a snooze alarm

only. Alarms time alarms only.

• Alarm settings (and Hourly Time Signal settings) are available in the Alarm Mode, which you enter by pressing C.

AL1 through AL4 can be used as one-

AL1 through AL4,

Page 4

Operation Guide 2628

To set an alarm time

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.

Displaying the Timekeeping Mode setting screen Displaying the snooze alarm setting screen

To test the alarm

In the Alarm Mode, hold down B to sound the alarm.

To turn an alarm on and off

Snooze alarm indicator

Alarm on indicator

To turn the Hourly Time Signal on and off

Hourly time signal on indicator

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

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.

1. In the Alarm Mode, use D to select an alarm.

2. Press B to toggle it on and off.

• Turning on a one-time alarm (

AL4) displays the alarm on indicator on its Alarm

Mode screen. Turning on the snooze alarm ( 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 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.

1. In the Alarm Mode, use D to select the Hourly Time

Signal (

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.

SIG

AL1, AL2, AL3,

SNZ)

Stopwatch

Hours

Minutes

Timekeeping Mode time

1/100 second

To measure times with the stopwatch

Elapsed Time

Start Stop

Split Time

Start Split

Two Finishes

Start Split

The stopwatch lets you measure elapsed time, split times, and two finishes.

Seconds

• 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.

➤

(SPL displayed)

➤

First runner finishes. Display time of first runner.

➤

Re-start Clear

➤

Split release

➤

Stop

Second runner finishes.

➤

Stop

➤

Stop

➤

Split release

Display time of second runner.

➤

Clear

➤

Clear

Illumination

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 turn on illumination manually

Auto light switch indicator

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.

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.

To turn the auto light switch on and off

In any mode (except when a setting screen is on the display), 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.

In any mode, press L to illuminate the display for about one second.

• The above operation turns on illumination regardless of the current auto light switch setting.

Parallel to ground

More than 40°

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 4 and when you have the battery replaced.

• Turn on the watch’s Power Saving function and keep it in an area exposed to bright light when storing it for long periods. This helps to keep the rechargeable battery from going dead.

Battery Power Indicator and Recover Indicator

The battery power indicator shows you the current power level of the rechargeable battery.

Battery power indicator

Level

Battery Power Indicator

Recover indicator

(Charge Soon Alert)

Solar cell

All functions enabled.

Alarm, hourly time signal, illumination, calibration

signal reception, display, and buttons are disabled.

All functions, including timekeeping, disabled and initialized.

Function Status

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Operation Guide 2628

• The flashing CHARGE indicator 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 momentarily is 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 appears and the following operations become disabled until battery power recovers.

Illumination Beeper tone Calibration signal reception

After some time, battery power will recover and the recover indicator will disappear, indicating that the above functions are enabled again.

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 seven 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)

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)

• 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

• 5 times calibration reception per day

• Stable operation is promoted by frequent charging.

Recovery Times

The table below shows the amount exposure that is required to take the battery from one level to the next.

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)

• The above exposure time values are all for reference only. Actual required exposure times depend on lighting conditions.

Approximate Exposure Time

Level 4 Level 3 Level 2 Level 1

66 hours

Approximate Exposure Time

5 minutes

24 minutes

48 minutes

8 hours

▲

1 hour

4 hours

6 hours

▲

15 hours

73 hours

148 hours

▲

4 hours

20 hours

41 hours

– – –

Timekeeping

Use the Timekeeping Mode to set and view the current time and date. This section also explains how to set the current date and time manually.

• The watch is equipped with a Time Recorder feature that lets you record the current Home City time (month, day, hour, minutes, seconds, and DST on/off setting) with the touch of a button. See “To record a Time Recorder time” for more information.

• All of the operations in this section are performed in the Timekeeping Mode, which you can enter by pressing C.

PM indicator

Seconds

Day of week

Timekeeping Screen

Press D.

▲

Month – DayHour : Minutes

Receive time

▲

Receive date

Last Signal Screen

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 current time and date manually

City code

City/Auto receive Settings

Time/Date/Power Saving Settings

3. When the setting you want to change is flashing, use B and/or D to change it as

described below.

City/Auto Receive Settings

Screen: To do this:

• See “City Code Table” for a complete list of available city codes.

Time/Date/Power Saving Settings

Screen: To do this:

4. Use A to exit the setting screen.

• If a City/Auto Receive Setting screen is displayed, press A twice.

• If a Time/Date/Power Saving Setting screen is displayed, press A once.

Note

• Auto DST (

▲

• The auto receive setting is used for time calibration signal reception only. See “About

• For details about power saving, see “Power Saving Function”.

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 signal transmitted from Fort Collins includes 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 (

• If you experience problems receiving the time calibration signal in your area, it

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

2. Press C and the DST setting screen appears.

3. Use D to cycle through the DST settings in the sequence shown below.

4. When the setting you want is selected, press A twice to exit the setting screen.

AUTO) can be selected only while HNL, ANC, LAX, DEN, CHI, or

NYC is selected as the Home City code. For more information, see “Daylight Saving

Time (DST)” below.

Auto Receive” for details.

DEN, CHI, or NYC as your Home City code.

probably is best to switch between Standard Time and Daylight Saving Time (summer time) manually.

indicates the setting screen.

Auto DST (

1. In the Timekeeping Mode, hold down A until the city

code starts to flash, which indicates the setting screen.

2. Press A or C to move the flashing in the sequence

shown below to select other settings.

Press C.

12/24-Hour Format

Power Saving on/off

Change the city code

Cycle between Daylight Saving Time (

ON), Standard Time (OFF), and

Auto DST (AUTO) Toggle between auto receive on

(

ON) and off (OFF)

Toggle between 12-hour (12H) and 24-hour (24H) timekeeping

Reset the seconds to 00 Change the hour, minutes, year,

month, or day Toggle the Power Saving on (

and off (OFF)

AUTO

) DST off (

AUTO) whenever you select ANC, LAX,

/ Press A.

DSTCity Code

Seconds

Day

Do this:

Use D (east) and B (west).

Press D.

Do this:

Press D.

Press D. Use D (+) and B (–).

ON)

Press D.

OFF

) DST on (ON)

Auto

Receive

Hour

Month Year

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.

Auto Return Features

• If you leave the watch in the Sunrise/Sunset Mode, Bearing Mode, Time Recorder Mode, or Alarm Mode for two or three minutes without performing any operation, it returns to the Timekeeping Mode automatically.

• If you leave a screen with flashing digits on the display for two or three minutes without performing any operation, the watch saves anything you have input up to that point and exits the setting screen automatically.

Scrolling

The B and D buttons are used in various modes and setting screens to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed.

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Operation Guide 2628

Initial Screens

When you enter the Alarm or World Time 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 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

City code DST (summer time)

Auto receive

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 the your Home City time setting.

• GMT differential is calculated by this watch based on UTC* data.

The letters “UTC” stands for “Universal Time Coordinated,” which is the world-wide

scientific standard of timekeeping. It is based upon carefully maintained atomic (cesium) clocks that keep accurate 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.

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 P (PM) indicator 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.

Power Saving Function

Power Saving on indicator

• 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.

To recover from the sleep state

Perform any one of the following operations.

• Move the watch to a well-lit area. on.

• Press any button.

• Angle the watch towards your face for reading.

Initial Factory Default

(New York) (Auto switching)

(Auto receive)

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.

Elapsed Time

in Dark

60 to 70 minutes

6 or 7 days

It can take up to two seconds for the display to turn

Display

Blank, with the Power Saving on indicator flashing

Blank, with the Power Saving on indicator not flashing

Operation

All functions enabled, except for the display

Beeper tone, illumination, display, and auto receipt of the calibration signal are disabled.

To turn Power Saving on and off

Power Saving on 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

• Wearing the watch on the inside of your wrist as well as movement or vibration of your arm can cause the auto light switch to activate and illuminate the display. To avoid running down the battery, turn off the auto light switch whenever engaging in activities that might cause frequent illumination of the display.

• 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.

More than 15 degrees too high

• 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.

1. In the Timekeeping Mode, hold down A. This causes

the city code to flash, which indicates the setting screen.

2. Press A again.

3. Press C seven times until the Power Saving on/off

screen appears.

4. Press D to toggle Power Saving on (

(

OFF).

5. After the setting is the way you want, press A to exit

the setting screen.

• The Power Saving on indicator is on the display in all modes while the Power Saving is turned on.

• 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 in about one second, 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.

ON) and off

City Code Table

City

– – – HNL ANC

LAX

DEN

CHI

NYC

CCS

RIO

– – – – – –

GMT LON

PAR

BER

ATH

CAI JRS JED THR DXB KBL

KHI DEL DAC

RGN

BKK

HKG

SEL TYO ADL SYD

NOU WLG

City

Honolulu

Anchorage

Los Angeles

Denver

Chicago

New York

Caracas

Rio De Janeiro

London

Pari s Berlin

Athens

Cairo

Jerusalem

Jeddah Tehran

Dubai Kabul

Karachi

Delhi

Dhaka

Yangon

Bangkok

Hong Kong

Seoul Tokyo

Adelaide

Sydney

Noumea

Wellington

Code

• Based on data as of December 2005.

GMT

Differential

–11 –10 –9

–8

–7

–6

–5

–4 –3 –2 –1

+3 +3.5 +4 +4.5 +5 +5.5 +6 +6.5 +7

+9.5 +10 +11 +12

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/Ft. Worth, New Orleans, Mexico City, Winnipeg Montreal, Detroit, Miami, Boston, Panama City, Havana, Lima, Bogota La Paz, Santiago, Pt. 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 Pt. Vila Christchurch, Nadi, Nauru Is.

Page 7

Operation Guide 2628

Site Data List

Site

ABIDJAN 0.0 1.0 4°W5°N ABU DHABI 4.0 5.0 54°E24°N ADDIS ABABA 3.0 4.0 39°E9°N ADEN 3.0 4.0 45°E13°N AMSTERDAM 1.0 2.0 5°E52°N ANCHORAGE –9.0 –8.0 149°W61°N ATHENS 2.0 3.0 24°E38°N AZORES –1.0 0.0 25°W38°N BANGKOK 7.0 8.0 101°E14°N BEIJING 8.0 9.0 116°E40°N BEIRUT 2.0 3.0 36°E34°N BOGOTA –5.0 –4.0 74°W5°N BOSTON –5.0 –4.0 71°W42°N BRASILIA –3.0 –2.0 48°W16°S BUENOS AIRES –3.0 –2.0 58°W35°S CAPE TOWN 2.0 3.0 18°E34°S CARACAS –4.0 –3.0 67°W11°N CASABLANCA 0.0 1.0 8°W34°N CHICAGO –6.0 –5.0 88°W42°N CHRISTCHURCH 12.0 13.0 173°E44°S DAKAR 0.0 1.0 17°W15°N DALLAS

FORT WORTH DAMASCUS 2.0 3.0 36°E34°N DENVER –7.0 –6.0 105°W40°N DETROIT –5.0 –4.0 83°W42°N DHAKA 6.0 7.0 90°E24°N DUBAI 4.0 5.0 55°E25°N DUBLIN 0.0 1.0 6°W53°N EDMONTON –7.0 –6.0 114°W54°N EL PASO –7.0 –6.0 106°W32°N FRANKFURT 1.0 2.0 9°E50°N GOLD COAST 10.0 11.0 154°E28°S GUAM 10.0 11.0 145°E13°N HAMBURG 1.0 2.0 10°E54°N HANOI 7.0 8.0 106°E21°N HELSINKI 2.0 3.0 25°E60°N HONG KONG 8.0 9.0 114°E22°N HONOLULU –10.0 –9.0 158°W21°N HOUSTON –6.0 –5.0 95°W30°N ISTANBUL 2.0 3.0 29°E41°N JAKARTA 7.0 8.0 107°E6°S JEDDAH 3.0 4.0 39°E22°N KARACHI 5.0 6.0 67°E25°N KUALA LUMPUR 8.0 9.0 102°E3°N KUWAIT 3.0 4.0 48°E29°N LA PAZ –4.0 –3.0 68°W17°S LAS VEGAS –8.0 –7.0 115°W36°N LIMA –5.0 –4.0 77°W12°S LISBON 0.0 1.0 9°W39°N LONDON 0.0 1.0 0°E52°N LOS ANGELES –8.0 –7.0 118°W34°N MADRID 1.0 2.0 4°W40°N MANILA 8.0 9.0 121°E15°N MELBOURNE 10.0 11.0 145°E38°S MEXICO CITY –6.0 –5.0 99°W19°N MIAMI –5.0 –4.0 80°W26°N MILAN 1.0 2.0 9°E45°N MONTEVIDEO –3.0 –2.0 56°W35°S MONTREAL –5.0 –4.0 74°W46°N MUSCAT 4.0 5.0 59°E24°N NADI 12.0 13.0 177°E18°S NAIROBI 3.0 4.0 37°E1°S NAURU ISLAND 12.0 13.0 167°E1°S NEW ORLEANS –6.0 –5.0 90°W30°N NEW YORK –5.0 –4.0 74°W41°N NOME –9.0 –8.0 165°W64°N NOUMEA 11.0 12.0 166°E22°S PAGO PAGO –11.0 –10.0 171°W14°N PANAMA CITY –5.0 –4.0 80°W9°N PAPEETE –10.0 –9.0 150°W18°S PARIS 1.0 2.0 2°E49°N PERTH 8.0 9.0 116°E32°S PHNOM PENH 7.0 8.0 105°E12°N PORT OF SPAIN –4.0 –3.0 62°W11°N PORT VILA 11.0 12.0 168°E18°S PRAIA –1.0 0.0 24°W15°N PYONGYANG 9.0 10.0 126°E39°N RIYADH 3.0 4.0 47°E25°N ROME 1.0 2.0 13°E42°N SAN FRANCISCO –8.0 –7.0 122°W38°N

GMT Differential

Standard Time DST/Summer

–6.0 –5.0 97°W33°N

Longitude Latitude

Site

SANTIAGO –4.0 –3.0 71°W33°S SAO PAULO –3.0 –2.0 47°W24°S SEATTLE –8.0 –7.0 122°W48°N SEOUL 9.0 10.0 127°E38°N SHANGHAI 8.0 9.0 121°E31°N SINGAPORE 8.0 9.0 104°E1°N STOCKHOLM 1.0 2.0 18°E59°N SYDNEY 10.0 11.0 151°E34°S TAIPEI 8.0 9.0 121°E25°N TOKYO 9.0 10.0 140°E36°N ULAANBAATAR 8.0 9.0 107°E48°N VANCOUVER –8.0 –7.0 123°W49°N VIENNA 1.0 2.0 16°E48°N VIENTIANE 7.0 8.0 103°E18°N WELLINGTON 12.0 13.0 175°E41°S WINNIPEG –6.0 –5.0 97°W50°N

•

Based on data as of 2003.

GMT Differential

Standard Time DST/Summer

Longitude Latitude