Casio 2708 Owner's Manual

About This Manual

USER’S GUIDE 2708

• 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, press L to illuminate the display.

Timekeeping Mode

Press C.

World Time Mode

▲

Timekeeping

Use the Timekeeping Mode to set and view the current time and date.

• In the Timekeeping Mode, press D to change the screen format as shown below.

Date and Time

Month – Day

Day of week

Press D.

Analog

▲

Seconds

▲

Seconds and Date

City code

▲

Press A.

▲

Last Signal Screen

1. In the Timekeeping Mode, press B. This causes the

current auto receive on/off setting (the receive indicator) to flash, which indicates the setting screen.

2. Press C twice to move the flashing to the city code

setting.

3. Use D(+) and A(–) to select the city code you want to

use as your Home City.

PM indicator

• Pressing A displays the Last Signal screen (date and time the time calibration

Current Time Setting

This watch automatically adjusts its time setting in accordance with a time calibration signal. You can also perform a manual procedure to set the time and date, when necessary.

• Before using the watch in the Continental United States, first use the procedure

• Note that after you set your Home City (the city where you normally use the watch)

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

• The analog time of this watch is synchronized with the digital time. Because of this,

• Before using the watch in Japan, first specify your Home City, select the DST setting

Setting Up the Watch for Use in the Continental United States

You need to make the following three settings before using this watch in the Continental United States. The following provides a general overview of the setting procedure. For full details, see “Setting the Time and Date Manually” and “Time Calibration Signal Reception”.

• Specify the city code for your Home City (the city where you will normally use the

• Select the auto summer time (DST) setting.

• Perform the manual time calibration signal receive operation to set the current time.

To set up the watch for use in the Continental United States

GMT differential

Seconds

Hour : Minutes

signal was last received) in the Timekeeping Mode.

under “Setting Up the Watch for Use in the Continental United States” to set the time in accordance with a time calibration signal.

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.

settings.

the analog time setting is automatically adjusted whenever you change the digital setting. See “Analog Timekeeping” for more information.

you want to use, and then perform the procedure under “To perform manual time calibration signal reception”.

watch).

Receive indicator

Date

Receive date

Receive time

Alarm Mode

▲

Data Memory

▲

Mode

▲

Hand Setting Mode

Stopwatch Mode

▲

• The following are the city codes for major cities in the Continental United States time zones.

LAX: Los Angeles, San Francisco, Las Vegas, Seattle DEN: Denver, El Paso

Receive indicator

Time Calibration Signal Reception

This watch is designed to pick up a time calibration signal and update its time setting in accordance with the signal. There are two different methods you can use to receive the signal: Auto Receive and Manual Receive. With Auto Receive, the watch automatically receives the calibration signal three times each day and makes appropriate adjustments. With Manual Receive, you perform a specific button operation to receive the calibration signal. Before performing a signal receive operation, remove the watch from you wrist and position it as shown in the illustrations below.

• If your watch has a resin band, pass the end of the band through the band loop and place the watch on a stable surface.

Resin band Metal band

CHI: Chicago, Houston, Dallas/Fort Worth, New Orleans NYC: New York, Detroit, Miami, Boston

4. Press C to display the summer time (DST) setting

screen.

5. Use D to select AUTO DST.

• AUTO DST specifies auto switching between Daylight Saving Time and Standard Time.

6. Press B to exit the setting screen.

• If you changed the digital time setting with the above steps, the analog hands move at this time to match it. Wait until the analog hands stop moving before you advance to the next step.

7. Hold down A for about two seconds until the watch

beeps.

• Release A and the message receiving appears to

indicate that signal reception has started.

• Time calibration signal reception takes from two to six minutes. Take care that you do not move the watch during this time.

• If the watch is indoors, we recommend that you place the watch near a window to allow better signal reception.

• After signal reception is complete, the display of the watch changes to the Last Signal screen, and the analog time of the watch is adjusted automatically.

Pass through band loop.

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.

• Note that signal reception is possible only when the watch is within range of a time calibration signal transmitter, and a city code that supports signal reception is selected as the Home City code.

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

• Auto receive is turned on when the watch is shipped from the factory.

• Time calibration signal reception is disabled while the analog hands are moving after

you change the digital time setting.

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

USER’S GUIDE 2708

To perform manual time calibration signal reception

1. Place the watch on a stable surface so its top (12 o'clock side) is facing in the general direction of the signal transmitter.

• Note that signal reception is poor if the watch is on its back or side.

2. In the Timekeeping Mode, hold down A for about two

seconds until the watch beeps.

• Release A and the message receiving appears to

indicate that signal reception has started.

• Time calibration signal reception takes from two to six minutes. Take care that you do not move the watch during this time.

• After signal reception is complete, the display of the

Receive indicator

Note

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

• If the receive operation is unsuccessful, the message ERROR! appears on the

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

• You can also change from the Last Signal or ERROR! screen to the normal

timekeeping screen by pressing A.

About the Receive Indicator

The receive 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

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

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

• The receive indicator remains on the display in all modes following reception of the time calibration signal and calibration of the watch’s time setting. The receive indicator does not appear 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, 4:00 AM and 6:00 AM each day (calibration times).

Note

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

• 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 receive indicator indicates that either the 2:00 AM, 4:00 AM, or 6:00 AM calibration signal reception was successful. Note, however, that the receive indicator is cleared from the display at 3:00 AM each day.

• If you do not see the receive indicator except for the above reason, it means there was some problem with the 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.

• When auto receive is turned on, the watch receives the calibration signal for two to six minutes each day when the digital time reaches 2:00 AM, 4:00 AM and 6:00 AM. Do not operate any of the watch’s buttons within six 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, 4:00 AM and 6:00 AM, regardless of whether or not the displayed time is actually the correct time.

• When two or three 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

Setting the Digital Time and Date Manually

Make sure you select your Home City code (the city code whose time and date you are setting) before 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 digital time and date manually

Auto

Receive

Day

Month

watch changes to the Last Signal screen, and the analog time of the watch is adjusted automatically.

• The receive indicator indicates that the calibration time reception attempt was successful.

1. In the Timekeeping Mode, press B. This causes the

current auto receive on/off setting (the receive indicator) to flash, which indicates the setting screen.

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

3. Press B to exit the setting screen.

1. In the Timekeeping Mode, press B. This causes the

current auto receive on/off setting (the receive indicator) to flash, which indicates the setting screen.

2. Press C to move the flashing in the sequence shown

below to select other settings.

Frequency

City Code

Year Minutes

DST

Hour

Strong

12/24-Hour Format

Seconds

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

described below.

Auto Receive

ScreenSetting

Frequency

City code

DST

12/24-Hour format

Press D to toggle between 12-hour (12H)

Hour, Minutes

Seconds

Month, Day, Year

4. Press B to 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 city codes.

• 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.

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

• The hands for the analog timepiece move to adjust to a new setting whenever any of the following occurs. When you change the digital time setting manually When the digital time setting is changed by time calibration signal reception When you change the Home City code and/or DST 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.

To adjust the analog time

Current time

When you want to do this:

Move the hand setting forward 20 seconds

Move the hand setting back 20 seconds Move the hand setting a short way forward at high speed

Move the hand setting a short way back at high speed

Move the hand setting a long way forward at high speed

Move the hand setting a long way back at high speed

4. Press B to 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.

1. In the Timekeeping Mode, press C five times to enter

the Hand Setting Mode.

2. Press B and the current digital time starts to flash,

which indicates the setting screen.

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

described below.

• Press D.

• Press A.

• Hold down D.

• Release D when the hands reach the setting

you want.

• Hold down A.

• Release A when the hands reach the setting

you want.

• While holding down D to move the hands at high-speed, press A to lock the high-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.

• While holding down A to move the hands at high-speed, press D to lock the high-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.

Button Operations

Press D to toggle auto receive on and off.

When TYO (Tokyo) is selected as the city code, press D to toggle the calibration signal reception frequency among Auto (FREQ. AT), 40KHz (FREQ . 40) and 60KHz (FREQ. 60). Note that frequency selection is available for the TYO city code only.

Use D (+) and A (–) to change the setting.

Press D to toggle between Daylight Saving Time (ON) and standard time (OFF).

• Pressing D performs a different operation

when HKG, TYO, SEL, NYC, CHI, DEN, LAX, ANC or HNL is selected as Home City Code. See “Auto Summer Time (DST) Switching”.

and 24-hour (24H) timekeeping. Use D (+) and A (–) to change the

setting. Press D to reset the seconds to 00. Use D (+) and A (–) to change the

setting.

Perform this button operation:

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