Casio 2739 User Manual
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MO0212-A

USER’S GUIDE 2367/2739

About This Manual

The operational procedures for Modules 2367 and 2739

 

are identical. All of the illustrations in this manual show

Module 2367.

Button operations are indicated using the letters shown

in the illustration.

Each section of this manual provides you with the

Module 2367

information you need to perform operations in each

mode. Further details and technical information can be

 

found in the “Reference” section.

Module 2739

General Guide

Press Cto change from mode to mode.

In any mode, press B to illuminate the display.

Day Counter Mode

Timekeeping Mode

Press C.

Timekeeping

Use the Timekeeping Mode to set and view the current time and date. You can also display the Last Signal screen in the Timekeeping Mode.

Last Signal

Date

 

Time

Receiving indicator

 

Hour : Minutes

Receive date

Month – Day

 

 

 

 

Press D.

Press A.

Receive time

 

 

Seconds

Day of week

 

PM indicator

 

 

The Last Signal screen alternates between the time and date that the time calibration signal was successfully received.

Current Time Setting

Normally, you do not need to do anything to set the current time as long as you are within an area in West Europe where the watch can pick up the time calibration signal. You can also set the current time manually when you are outside the range of the signal.

Before using the watch after purchasing it, use the procedure under “Selecting Your Home City Code” to specify your Home City, and then use the procedure under “To perform manual time calibration signal reception”.

Note that after you set your Home City code, you must also turn on the watch’s time calibration signal receiver if you want to enable auto time calibration. See “About Auto Receive” for more information.

See “Setting the Digital Time and Date Manually” for information about manual settings.

The analog time of this watch is synchronized with the digital time. Because of this, the analog time setting is automatically adjusted whenever you change the digital setting. See “Analog Timekeeping” for more information.

Setting the Digital Time and Date Manually

Once you select a Home City code and set its time, you can view the current time in other cities by simply changing the city code setting. Even if you plan to use the watch without enabling auto time calibration, be sure to select a Home City code (the city code whose time and date you are setting), before you set the time and date.

To set the current digital time and date manually

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. In the Timekeeping Mode, hold down Auntil the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

current Auto Receive On/Off setting (the receiving

 

 

 

 

 

 

 

l

l

 

l

 

 

 

indicator) starts to flash, which indicates the setting

 

 

 

 

 

 

 

 

 

l

 

 

 

screen.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

l

 

 

 

l

 

 

2. Press Cto move the flashing in the sequence shown

 

 

 

 

 

 

 

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l

 

 

 

 

 

 

 

 

 

 

 

 

below to select other settings.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Auto

 

 

 

 

 

 

City Code

 

 

 

DST

 

 

 

12/24-Hour

 

 

Seconds

 

 

 

 

 

 

Receive

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Format

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sleep

 

 

 

 

 

Day

 

 

 

Month

 

 

 

Year

 

 

Minutes

 

 

Hour

 

 

 

Mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Telememo Mode

Alarm Mode

 

Hand Setting Mode

Stopwatch Mode

 

3.When the setting you want to change is flashing, use Band/or Dto change it as described below.

Setting

Screen

 

Button Operations

Auto Receive

 

Press Dto toggle auto receive on and off.

 

 

 

City Code

 

Use D(+) and B (–)to change the

 

 

setting.

 

 

 

DST

 

Press Dto toggle between Daylight Saving

 

 

Time (ON) and standard time (OFF).

 

 

Pressing D performs a different operation

 

 

when BER,LON,PAR,CAI, orJRS is

 

 

selected as Home City Code. See “Auto

 

 

Summer Time (DST) Switching”.

 

 

 

12/24-Hourformat

 

Press Dto toggle between 12-hour(12H)

 

 

and 24-hour(24H) timekeeping.

Hour, Minutes

 

Use D(+) and B (–)to change the

 

 

setting.

Seconds

 

Press Dto reset the seconds to 00.

 

 

 

Month, Day

 

Use D(+) and B (–)to change the

Year

 

setting.

Sleep Mode

 

Press Dto toggle the sleep mode on (On)

 

 

and off (OF).

 

 

 

 

4.Press Ato exit the setting screen.

The Auto Receive setting is used for time calibration signal reception only. See “About Auto Receive” for details.

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

See “Sleep Mode” for details about the sleep mode.

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 to00 without changing the minutes.

Selecting Your Home City Code

You can select a city code for your Home City (the city where you normally use the watch). This data can be changed any time you move to another geographic area.

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

Once you select a Home City code and set its time, you can use World Time to view the current time in any one of 28 cities (29 time zones) around the world by simply specifying a city code.

To select your Home City code

 

 

 

 

 

 

 

 

1. In the Timekeeping Mode, hold down Auntil the

 

 

 

 

 

 

 

 

current Auto Receive On/Off setting (the receiving

 

 

 

l

 

l

 

 

indicator) starts to flash, which indicates the setting

l

l

l

 

l

l

screen.

l

 

 

 

 

 

l

2. Press Cto move the flashing to the City Code setting.

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l

l

 

l

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l

 

 

 

 

3. Use D (+) and B(–)to change it.

 

City code

 

 

 

4. Press Ato exit the setting screen.

 

 

 

 

 

 

 

 

Time Calibration Signal Reception

This watch is designed to pick up a time calibration signal transmitted from Mainflingen, Germany and update its time setting in accordance with the signal. There are two different methods you can use to receive the signal: Auto Receive andManual Receive. WithAuto Receive, the watch automatically receives the calibration signal twice each day and makes appropriate adjustments. WithManual Receive, you perform a specific button operation to receive the calibration signal.

Note

If you are using the time calibration signal to set the time for this watch, be sure to correctly set your Home City. Otherwise, there is the chance that the watch will not set the correct time. See the “To select your Home City code” for details.

Time calibration reception is limited to specific geographic areas in West Europe.

The current time setting in accordance with the time calibration signal takes priority over any time settings you make.

The watch is designed to automatically update the date and day of the week for the period January 1, 2000 to December 31, 2039. Setting of the date by the time calibration signal cannot be performed starting from January 1, 2040.

This watch can receive signals that differentiate between leap years and non-leapyears.

1

USER’S GUIDE 2367/2739

Auto Receive is turned on when the watch is shipped from the factory.

See the information under “Time Calibration Signal Reception Precautions” if you experience problems with time calibration signal reception.

Auto Summer Time (DST) Switching

The time calibration signal transmitted from Mainflingen, Germany includes both standard time and summer time (Daylight Saving Time or DST) data. Because of this, the watch automatically switches between standard time and summer time (DST) automatically whenever BER,LON,PAR,CAI, orJRS is selected as the Home City code.

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.

Auto Summer Time (DST) Default Settings

The following shows the default settings for each of the Home City codes that support auto summer time (DST) switching.

Home City Code

Auto Summer Time Default Setting

BER, LON, PAR

AUTO

CAI, JRS

OFF

The following flows show how to switch the auto summer time setting between AUTO,

ON, andOFF.

The following are the meanings of the AUTO,ON, andOFF indicators.AUTO - Watch will switch between standard time and summer time (DST)

automatically. ON - Summer time (DST)

OFF - Standard time (summer time turned off)

See “To set the current digital time and date manually” for information about configuring summer time (DST) settings.

When BER is the Home City Code

 

 

 

 

 

 

 

 

Press D.

After receipt of the time calibration

 

 

 

 

 

 

 

 

 

 

signal turns summer time off.

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

AUTO (Default)

 

After receipt of the time calibration

 

 

signal turns summer time on.

 

 

 

 

 

 

 

 

 

 

OFF

 

 

When LON, PAR, CAI, or JRS is the Home City Code

 

 

 

 

 

 

 

 

 

 

Press D.

Press B.

 

 

 

 

 

 

 

 

 

 

 

 

 

AUTO (Default for

 

OFF (Default for

Press Bor D.

ON

 

 

 

 

LON and PAR)

 

CAI and JRS)

 

 

To perform manual time calibration signal reception

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

o’clock side) is facing in the general direction of

 

 

 

 

 

 

 

 

 

Frankfurt, Germany.

 

 

 

 

 

 

 

 

 

 

 

Position the watch so the case is pointing upwards as

 

 

 

 

 

 

 

 

 

 

shown in the nearby illustration. This puts the watch in

 

 

 

 

 

 

 

 

 

 

the optimum position for time calibration signal

 

 

 

 

 

 

 

 

 

reception.

 

 

 

 

 

 

 

 

 

 

 

Note that signal reception is poor if the watch is on its

Receiving indicator

 

back or side.

 

 

2. In the Timekeeping Mode, hold down Dfor about two

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

seconds, until the watch beeps and the current time is

 

 

 

 

 

 

 

 

 

flashing on the display.

 

 

 

l

l

l l

l

l l l

l

 

 

This indicates that signal reception has started.

l

 

 

 

 

 

 

Time calibration signal reception takes from four to 11

 

 

 

 

 

ll ll

l

 

 

 

 

ll

 

l

 

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l l

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l

 

minutes. Take care that you do not move the watch

 

 

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l l

 

 

 

 

 

 

 

 

 

 

during this time.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Current time

 

 

 

 

 

 

 

 

 

After signal reception is complete, the display of the watch changes to the Last Signal screen, which shows the new signal receive date and time.

The Level 4 receiving indicator () indicates that the calibration time reception attempt was successful.

Note

To interrupt a receive operation and return to the Timekeeping Mode (Date or Time screen), press D.

If the receive operation is unsuccessful, the message ERR appears on the Last Signal screen for about one or two minutes. After that, the watch returns to the Timekeeping Mode (Date or Time screen).

You can also change from the Last Signal screen to the Timekeeping Mode (Date or Time screen) by pressing D.

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

Strong Weak

Strong

(Level 1) Module 2367

(Level 4) (Level 1) Module 2739

(Level 4)

Even in an area where signal strength is strong, it takes about 10 seconds for signal reception to stabilize enough for the receiving indicator to indicate signal strength.

Use the receiving indicator as a guide for checking signal strength and for finding the best location for the watch during signal receive operations.

The receiving indicator (Level 4) remains on the display in all modes following reception of the time calibration signal and calibration of the watch’s time setting. The receiving indicator (Level 4) is not displayed if signal reception was unsuccessful or after manual adjustment of the current time setting.

About Auto Receive

When auto receive is turned on, the watch automatically starts to receive the time calibration signal when the digital time in the Timekeeping Mode reaches 2:00 AM, and 4:00 AM each day (calibration times).

Note

The Auto Receive operation is performed only if the watch is in the Timekeeping Mode when one of the calibration times is reached. It is not performed if the calibration time is reached while you are making settings (while settings are flashing

on the display).

Auto receipt of the calibration signal is designed to be performed early in the morning, while you sleep (provided that the digital 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 easily receive the signal.

The Level 4 receiving indicator ( ) indicates that one or both of the last calibration time reception attempts were successful. If you do not see the Level 4 receiving indicator, it means there was some problem with the last calibration reception operation. Either perform reception manually, or make sure the watch is set up properly to receive the time calibration signal for the next automatic reception time.

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

When auto receive is turned on, the watch receives the calibration signal for four to 11 minutes each day when the digital time reaches 2:00 AM, and 4:00 AM. Do not operate any of the watch’s buttons within 15 minutes prior to or following the calibration times. Doing so can interfere with correct calibration.

Remember that reception of the calibration signal depends on the time shown on the digital display. The receive operation will be performed whenever the digital display shows 2:00 AM, and 4:00 AM, regardless of whether or not the displayed time is actually the correct time.

When two 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.

To turn auto receive on and off

 

 

 

 

1. In the Timekeeping Mode, hold down Auntil the

 

 

 

 

current Auto Receive On/Off setting (the receiving

l

l

 

l

indicator) starts to flash, which indicates the setting

 

 

l

screen.

l

 

 

l

 

l

2. Press D to toggle Auto Receive on (ON) and off

l

l

 

 

 

(OFF).

 

 

 

 

3. Press A to exit the setting screen.

Analog Timekeeping

The analog time of this watch is synchronized with the digital time. The analog time setting is adjusted automatically whenever you change the digital time.

Note

Whenever you manually change the digital time setting or Home City code, or if the time is adjusted by receipt of a time calibration signal, the hands of the analog timepiece move clockwise or counter clockwise to adjust to the new setting. If the analog time does not match the digital time for any reason, use the procedure described under “To adjust the analog time” to match the analog setting to the digital setting.

Whenever you need to adjust both the digital and the analog time settings manually, make sure you adjust the digital setting first.

Depending on how much the hands have to move in order to adjust to the digital time, it may take some time before the analog hands stop moving.

The analog time does not change while a signal receipt operation is in progress. After the receive operation is complete, the analog time is automatically adjusted to match the digital time.

If a signal receive operation is performed while the analog time and digital time do not match, the digital time will be adjusted correctly but the analog time may not be adjusted. If this happens, perform the steps below to adjust the analog time.

To adjust the analog time

1. In the Timekeeping Mode, press Cfive times to enter

 

 

 

 

 

 

Current time

 

the Hand Setting Mode.

 

 

 

 

 

 

2. Hold down Auntil the current digital time starts to

 

 

 

 

 

 

flash, which indicates the setting screen.

 

 

 

 

 

 

Note that you will not be able to change to the setting

 

 

 

 

 

 

 

screen if the analog hands are moving because the

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l

l l

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watch is automatically adjusting the analog time to

 

 

 

 

l

 

match the digital time. If this happens, wait until the

l

 

 

 

 

l

 

l

 

 

 

 

l

 

 

 

 

 

l

 

l l l

l

l

 

 

hands stop moving.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3. Use D(+) and B(–)to adjust the analog setting as

 

 

 

 

 

 

described below.

 

 

 

 

 

When you want to do this:

 

 

Perform this button operation:

 

Move the hand setting

 

 

Press D.

 

forward 20 seconds

 

 

 

 

 

Move the hand setting back

 

Press B.

 

20 seconds

 

 

 

 

 

 

 

Move the hand setting a short

 

Hold down D.

 

way forward at high speed

 

 

Release D when the hands reach the setting

 

 

 

 

 

 

 

 

 

 

you want.

 

Move the hand setting a

 

 

Hold down B.

 

short way back at high speed

 

Release B when the hands reach the setting

 

 

 

 

 

 

 

 

 

 

you want.

 

Move the hand setting a

 

 

While holding down Dto move the hands at

 

long way forward at high

 

 

 

high-speed,press B to lock thehigh-speed

 

speed

 

 

 

 

 

 

 

hand movement.

 

 

 

 

 

 

 

 

 

Press any button when the hands are close to

 

 

 

 

 

 

 

 

 

the setting you want.

 

 

 

 

 

 

 

 

 

Hand movement stops automatically if the hour

 

 

 

 

 

 

 

 

 

 

hand makes one full (12-hour)revolution.

 

Move the hand setting a long

 

While holding down Bto move the hands at

 

way back at high speed

 

 

 

high-speed,press D to lock thehigh-speed

 

 

 

 

 

 

 

 

 

hand movement.

 

 

 

 

 

 

 

 

 

Press any button when the hands are close to

 

 

 

 

 

 

 

 

 

the setting you want.

 

 

 

 

 

 

 

 

 

Hand movement stops automatically if the hour

 

 

 

 

 

 

 

 

 

 

hand makes one full (12-hour)revolution.

 

4.Press Ato exit the setting screen.

The minute hand will be adjusted slightly to match the seconds when you exit the setting screen.

To return to the Timekeeping Mode, press C.

2

Target Month – Day

USER’S GUIDE 2367/2739

Day Counter

The Day Counter lets you count the number of days from the Timekeeping Mode’s current date to a specific target date.

There are five Day Counter records, each of which can be set with its own text and target date (year, month, day).

All of the operations in this section are performed in the Day Counter Mode, which you enter by pressing C.

To recall Day Counter records

Enter the Day Counter Mode, and the Target Date/Text screen appears.

Target Date/Text

Day Counter

Target Month – Day

 

Target year

 

 

Minus sign

 

Press A.

Text

Day counter

 

The Target Date/Text screen alternates between the target month and day, and the target year.

Your watch comes preset with the Day Counter text settings shown below. You can use these as they are or change them to something else, if you want.

Day Counter Number

Text

Meaning

DC1

ANIV.

Anniversary

DC2

EVENT

Event

DC3

BIRTHDAY

Birthday

DC4

DC4

No setting

DC5

DC5

No setting

If there is no text assigned to a target date, the applicable day counter number appears in place of the text.

A minus sign (x) in the upper left corner of the display indicates that the target date comes before the current date. No sign indicates the target date is after the current date.

Press Dto cycle through the Day Counter records as shown below.

DC1

DC2

DC3

DC4

DC5

To set a Day Counter record

1. In the Day Counter Mode, use D to scroll through the Day Counter records until the one you want to set is on the display.

 

 

 

 

2. Hold down Auntil the flashing cursor appears on the

 

l l

 

display, which indicates the setting screen.

l

 

 

l

Pressing Band Dat the same time causes the

l

 

 

l

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l

message “CLEAR” to appear and clears the text (if

 

 

 

 

 

 

 

 

 

 

there is any already input), and sets the current

Cursor

Timekeeping Mode date as the target date.

 

3.Press Cto move the flashing in the sequence shown below to select other settings.

Text

 

 

Year

 

 

Month

 

 

Day

 

 

 

 

 

 

 

 

 

 

There are eight spaces in the text, so you have to press Ceight times to move to the Year setting.

When the Year setting is selected, the cursor changes for a four-digittarget year.

4.When the setting you want to change is selected, use Band D to change it.

Selecting the text causes the text input cursor to appear.

When inputting text, use Band Dto cycle through characters at the current cursor location, and Cto move the cursor to the right. See “Inputting Text”.

While the year, month, or day setting is flashing, use D (+) and B (–)to change the setting.

You can set a target date in the range of January 1, 1940 to December 31, 2039.

5.Press Ato exit the setting screen.

Note

Use the above procedure to edit Day Counter records, too.

The display can show only three characters at a time, so longer text scrolls continuously from right to left.

Telememo

Telememo lets you store up to 20 records, each containing name and telephone number data. Records are automatically sorted based on the characters of the name. You can recall records by scrolling through them on the display.

Memory Number/Name

Telephone Number

Remaining memory

 

Memory number

 

 

Press A.

Name

Telephone number

Your watch comes preset with three Telememo records with the names “FAMILY”, “HOME”, and “OFFICE” without any phone numbers. You can change or delete these records if you want.

See “Character List” for details on how the watch sorts records.

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

To create a new Telememo record

1.In the Telememo Mode, press D until a record showing “– – –”(indicating the new record input screen) appears.

If the message “FULL” appears on the display, it means that memory is full. To store another record, you will first have to delete some of the records stored in memory.

2.Hold down Auntil the flashing cursor (_) appears on the display, which indicates the setting screen.

3.Input a name.

When inputting the name, use Band D to cycle through characters at the current cursor location, and C to move the cursor to the right. See “Inputting Text”.

You can input up to eight characters for the name.

 

4. After you input the name, press Cas many times as

 

necessary to display the number input screen.

 

You can input up to eight characters for the name.

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l

When the cursor is located at the eighth space of the

 

l l

 

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l

name, moving the cursor to the right causes it to jump

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to the first digit of the number. When the cursor is at the 12th digit of the number, moving it to the right (by pressing C) causes it to jump to the first character in the name.

5. Input a telephone number.

 

 

Use Band Dto change the character (hyphen, number, or space) at the cursor

 

position. The character changes in the following sequence.

 

Press D.

 

 

 

0 to 9

(space)

 

Press B.

 

 

6. When the character you want is at the cursor position, press Cto move the cursor

to the right.

 

 

7. Repeat steps 5 and 6 until you complete number input.

You can input up to 12 digits for the number.

 

The number initially contains all hyphens. You can leave the hyphens or replace

 

them with numbers or spaces.

 

 

8. Press Ato store your data and return to the Telememo record screen (without the

cursor).

 

 

When you press A, the message “SORT” appears on the display for a few

 

seconds. After the sort operation is complete, the watch returns to the Telememo

record screen (without the cursor).

 

 

The display can show only three characters at a time, so longer text scrolls

 

continuously from right to left.

 

 

To recall Telememo records

In the Telememo Mode, press D(+) to scroll through Telememo records on the display.

Only the memory number and name of each Telememo record appear on the display as you scroll through Telememo records.

Pressing A while the memory number/name screen is on the display changes to the telephone number screen for that record.

The display can show only five digits of the telephone number at a time, so longer numbers scroll continuously from right to left.

To edit a Telememo record

1.In the Telememo Mode, scroll through the records and display the one you want to edit.

2.Hold down Auntil the flashing cursor appears on the display.

3.Use C to move the flashing to the character you want to change.

4.Use B and D to change the character.

5.After making the changes that you want, press Ato store them and return to the Telememo record screen.

To delete a Telememo record

1.In the Telememo Mode, scroll through the records and display the one you want to delete.

2.Hold down Auntil the flashing cursor appears on the display.

3.Press Band Dat the same time to delete the record.

The message “CLEAR” appears for a few moments, and then the cursor appears on the display, ready for input.

4.Input data or press Ato return to the Telememo record screen.

Alarms

Alarm on indicator

Alarm time

Alarm number

Hourly time signal on indicator

To set an alarm time

You can set three independent Daily Alarms. When an alarm is turned on, the alarm tone sounds when the alarm time is reached. You can also turn on an Hourly Time Signal that causes the watch to beep twice every hour on the hour.

The alarm and Hourly Time Signal operate in accordance with the current digital time.

The alarm number (“AL1” though “AL3”) indicates an alarm screen. “SIG” appears in place of the alarm number when the Hourly Time Signal screen is shown.

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

1.In the Alarm Mode, press Dto select the alarm whose time you want to set.

AL1

 

AL2

 

 

AL3

 

 

SIG

 

 

 

 

 

 

 

 

 

 

 

2.Hold down Auntil the hour setting of the alarm time

starts to flash, which indicates the setting screen.

This automatically turns on the alarm.

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-hourformat, take care to set the time correctly as a.m. (no indicator) or p.m. (P indicator).

If you have 24-hourtimekeeping selected in the Timekeeping Mode, the alarm time is also displayed in24-hourformat.

5.Press A to exit the setting screen.

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USER’S GUIDE 2367/2739

Alarm Operation

The alarm sounds at the preset time for about 10 seconds in all modes, or until you stop it by pressing any button.

To test the alarm

In the Alarm Mode, hold down Dto sound the alarm.

To turn an alarm and the Hourly Time Signal on and off

1.In the Alarm Mode, press Dto select an alarm or the Hourly Time Signal.

2.When the alarm or the Hourly Time Signal you want to is selected, press Ato turn it on and off.

The alarm on indicator ( ) and the Hourly Time Signal on indicator ( ) are

shown on the display in all modes while these functions are turned on.

If any alarm is on, the alarm on indicator is shown on the display in all modes.

Stopwatch

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

Minutes 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.

Hours

 

 

 

 

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

 

Seconds

 

 

C.

 

 

 

 

 

1/100 second

 

 

 

To measure times with the stopwatch

 

 

Elapsed Time

 

 

 

 

 

 

D

 

D

 

D

D

A

Start

Stop

Re-start

Stop

Clear

Split Time

 

 

 

 

 

 

D

 

A

 

A

D

A

Start

Split

Split release

Stop

Clear

Two Finishes

 

 

 

 

 

 

D

 

A

 

D

A

A

Start

Split

Stop

Split release

Clear

 

 

 

First runner

Second runner

Display time of

 

 

 

 

finishes.

finishes.

second runner.

 

 

 

 

Display time of

 

 

 

 

 

 

first runner.

 

 

 

Battery

This watch is equipped with a solar cell and a rechargeable battery (secondary battery) that is charged by the electrical power produced by the solar cell.

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. Be sure that the watch is normally exposed to light whenever possible.

This watch employs a solar cell that converts light into electricity that charges a builtin rechargeable battery. Normally, the rechargeable battery should not need replacement, but after very long use over a number of years, the rechargeable battery may lose its ability to achieve a full charge. Should you notice problems with getting the rechargeable battery to a full charge, contact your dealer or CASIO distributor about having the rechargeable battery replaced.

The rechargeable battery should be replaced with a CASIO-specifiedCTL1616 battery only. Other rechargeable batteries can cause damage to the watch.

Turn on the watch’s sleep mode and keep it in an area normally exposed to light when storing it for long periods. This helps to keep the rechargeable battery from going dead.

Battery Power Indicator

The battery power indicator on the display shows you the current status of the rechargeable battery’s power.

Level

Battery Power

Function Status

 

 

Indicator

 

1

 

 

 

 

All functions enabled.

2

 

 

 

 

All functions enabled.

3

l l

ll

Auto and manual signal receive,

 

l

 

 

l

alarm, hourly time signal, backlight,

 

l

 

 

Battery power

l

 

l

 

 

l l

l

 

and display are disabled. Though

indicator

 

 

 

 

 

 

 

RECOVER

 

 

 

 

the hands of the watch do not

 

 

 

 

move, time continues to be kept

indicator

 

 

 

 

 

 

 

 

internally.

 

 

 

 

 

4

 

 

 

 

All functions, including timekeeping,

 

 

 

 

 

are disabled.

At Level 4, all functions are disabled. Functions are enabled once again after the rechargeable battery is charged, but anything previously stored in memory is lost. Because of this, you must set the current time and alarms, andre-inputTelememo records after the rechargeable battery is charged.

Leaving the watch in direct sunlight or some other very strong light source can cause the battery power indicator to temporarily show a reading that is actually higher than the 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, a RECOVER indicator ()appears on the display and the following operations become disabled until battery power recovers.

Backlight

Alarm and hourly time signal

Coordination between digital and analog timekeeping Time 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 sunlight to charge its rechargeable battery can cause it to become quite hot. Take care when handling the watch to avoid burn injury.

On the dashboard of a car parked in direct sunlight

Too close to an incandescent lamp

Under direct sunlight or in any other area exposed to intense heat for long periods

Charging Guide

After a full charge, timekeeping remains enabled for up to about six months, while the watch is used under the conditions described below.

Operating Conditions

Watch is not exposed to light

1 backlight operation (1.5 seconds) per day

10 seconds of alarm operation per day

2 signal receive operations per day

Charge Times

Exposing the watch to light for the periods shown below each day restores the power used by the above operating conditions.

Exposure Level (Brightness)

Approximate Exposure Time

Outdoor Sunlight (50,000 lux)

5 minutes

 

 

Sunlight Through a Window (10,000 lux)

24 minutes

 

 

Daylight Through a Window on a Cloudy

48 minutes

Day (5,000 lux)

 

 

 

Indoor Fluorescent Lighting (500 lux)

8 hours

 

 

Recovery Times

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

Exposure Level

Approximate Exposure Time

 

(Brightness)

 

 

 

 

 

 

 

 

Level 4

Level 3

Level 2

 

Level 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor Sunlight (50,000 lux)

54 minutes

14 hours

 

3 hours

 

 

 

 

 

 

 

 

 

Sunlight Through a Window (10,000 lux)

3 hours

71 hours

 

14 hours

 

 

 

 

 

 

 

 

 

Daylight Through a Window on a Cloudy

5 hours

– – – – –

 

– – – – –

Day (5,000 lux)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor Fluorescent Lighting (500 lux)

41 hours

– – – – –

 

– – – – –

 

 

 

 

 

 

 

 

 

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

Stable operation is promoted by frequent charging.

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 any mode (except for the Stopwatch Mode) for two or three minutes without performing any operation, it automatically changes to the Timekeeping Mode.

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

Data and Setting Scrolling

The Band 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.

Initial Screens

The following shows what appears on the display first in each mode.

Mode

Screen

Alarm

Data you were last viewing.

Day Counter

Target Date/Text screen with data you were last viewing.

Telememo

Memory Number/Name screen with data you were last

 

viewing.

 

 

Time Calibration Signal Reception Precautions

This watch is able to receive the time calibration signal transmitted from Mainflingen, Germany (located 25

kilometers southeast of Frankfurt). Signal reception is possible within the area represented by a circle with a radius of about 1,000 kilometers.

At distances further than about 500 kilometers, the signal may become weak and reception may be impossible under certain conditions.

Frankfurt

Even when the watch is within the reception range, signal reception is impossible if the signal is blocked by mountains or other geological formations between the watch and signal source.

Signal reception may be poor in the shaded area on the map, even though it is within 1,000 kilometers of the signal transmitter.

Signal reception is affected by weather, atmospheric conditions, and seasonal changes.

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.

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