Casio 4723 User Manual

4 (1)
Casio 4723 User Manual

MO0712-EC

Operation Guide 4723

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.

Starting second hand movement and digital display

 

To conserve battery power, the watch is shipped from the

TAC

factory with its functions disabled. Pressing any one of the

HY

MET

ER

 

watch’s three buttons will activate its functions, which will cause the second hand to start moving and the digital display to activate.

About This Manual

Stopwatch 1/20 second hand

Minute hand

Hour hand

TACHYM

ET

E

R

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.

Date

Your watch switches automatically between Standard Time and Daylight Saving Time (summer time).

Note, however, that switching cannot be performed correctly if the watch is not able to receive the time calibration signal.

If you notice that the current time is not displayed properly, use the procedure under “To perform manual receive” or “To set the time and date manually” to correct it.

24-Hour hand

Stopwatch

minute hand Second hand (Timekeeping/

Stopwatch)

General Guide

Press Cto change from mode to mode.

About 1.5 seconds after you enter the Dual Time Mode, Alarm Mode, or Hand Setting Mode the hands will move the position that indicates the current setting of the mode. You cannot

change to another mode while the hands are moving. To change to another mode, either press Cbefore the hands start to move, or wait until the hands stop before pressing C.

In Timekeeping mode (except when a setting screen is on the display), press Bto illuminate the face of the watch.

Timekeeping Mode

T

 

ACH

 

YM

 

ET

Press C.

ER

 

Stopwatch Mode

Dual Time Mode

Hand Setting Mode

Alarm Mode

Radio-controlled Atomic Timekeeping

This watch receives a time calibration signal and updates its time setting accordingly. The time calibration signal includes both Standard Time and Daylight Saving Time (summer time) data.

Supported time calibration signals: Germany (Mainflingen), England (Rugby).

Current Time Setting

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

The first thing you should do after purchasing this watch is to specify your Home Time Zone, which is the time zone where you will normally use the watch. For more information, see “To specify your Home Time Zone” below.

When using the watch outside the range of the time signal transmitter, you have to adjust the current time setting manually as required. See “Timekeeping” for more information about manual time settings.

To specify your Home Time Zone

1.In the Timekeeping Mode, hold down Auntil the GMT differential value starts to flash, which indicates the

DST indicator

setting screen.

 

 

 

The second hand will move at high speed to the 12

 

 

 

o’clock position, where it will stop.

 

 

 

The GMT differential value indicates the time

 

 

 

difference in hours between Greenwich Mean Time

 

 

 

and the currently selected time zone.

ll l l l ll

The DST indicator indicates that Daylight Saving Time

l

l

ll

 

l

(summer time) is turned on for the currently selected

l

 

l

l l l l l ll

 

 

 

 

time zone.

 

 

 

2. Use B(+) to select the time zone you want to use as

GMT differential

your Home Time Zone.

The following are the GMT differential values for major

value

 

 

 

 

cities in the Western Europe time zones.

 

 

 

Time Zone

Other major cities in same time zone

+0.0 (DST +1.0) London, Dublin, Lisbon, Casablanca,

Dakar, Abidjan

Paris, Milan, Rome, Madrid,

+1.0 (DST +2.0) Amsterdam, Algiers, Hamburg,

Frankfurt, Vienna, Stockholm, Berlin

Athens, Cairo, Jerusalem, Helsinki,

+2.0 (DST +3.0) Istanbul, Beirut, Damascus,

Cape Town

3. Press A to exit the setting screen.

The second hand will advance at high speed to the correct position and resume normal movement from there.

Normally, your watch should show the correct time as soon as you specify your Home Time Zone. 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.

Selecting +0.0, +1.0, or +2.0 (+1.0, +2.0, or +3.0 while DST is turned on) as your Home Time Zone automatically turns on auto receive. When auto receive is turned on and you are within the reception range, the watch will automatically receive the time calibration signal from the applicable transmitter (in the middle of the night) and update its settings accordingly. For information about the relationship between time zones (GMT differential values) and transmitters, see “Transmitters”.

See the maps under “Reception Ranges” for information about the reception ranges of the watch.

If you are in an area that does not use Daylight Saving Time (summer time), turn off the DST setting.

Even if the time calibration signal is received correctly, there are some times when the analog hands may not indicate the correct time. If this happens, use the procedures under “Adjusting the Home Positions” to check the home positions of the

hands, and make adjustments as required.

Time Calibration Signal Reception

There are two different methods you can use to receive the time calibration signal: auto receive and manual receive.

Auto Receive

With auto receive, the watch receives the time calibration signal automatically up to six times a day. When any auto receive is successful, the remaining auto receive operations are not performed. For more information, see “About Auto Receive”.

Manual Receive

Manual receive lets you start a time calibration receive operation with the press of a button. For more information, see “To perform manual receive”.

Important!

When getting ready to receive the time calibration signal, position the watch as shown in the nearby illustration, with its 12 o’clock side facing towards a window. Make sure there are no metal objects nearby.

12 o’clock

or

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

Inside a

Near

Near a

Near high-

Among or

among

vehicle

household

construction

tension

behind

buildings

 

appliances,

site, airport, or

power lines

mountains

 

 

office

other sources

 

 

 

 

equipment,

of electrical

 

 

 

 

or a mobile

noise

 

 

 

 

phone

 

 

 

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

Time calibration signal reception takes from two to seven minutes, but in some cases it can take as long as 14 minutes. Take care that you do not perform any button operations or move the watch during this time.

When within range of the applicable transmitter, this watch can receive either the Germany (Mainflingen) or England (Rugby) time calibration signals.

See “Transmitters” for more information.

Reception Ranges

1,500 kilometers

Rugby

 

500 kilometers

Mainflingen

 

1

N (NO)
W (WORK)
R (READY) Y (YES)

Operation Guide 4723

Signal reception may not be possible at the distances noted below during certain times of the year or day. Radio interference may also cause problems with reception.

Mainflingen (Germany) or Rugby (England) transmitters: 500 kilometers (310

miles)

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

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

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

About Auto Receive

The watch receives the time calibration signal automatically up to six times a day. When any auto receive is successful, the remaining auto receive operations are not performed. The reception schedule (calibration times) depends on your currently selected Home Time Zone, and whether standard time or Daylight Saving Time is selected for your Time Zone.

Note

Auto receive is turned on whenever +0.0, +1.0, or +2.0 (+1.0, +2.0, or +3.0 while DST is turned on) is selected as the Home Time Zone.

Your Time Zone

 

 

Auto Receive Start Times

 

1

2

 

3

4

5

6

 

 

 

+ 0.0

Standard Time

1:00 am

2:00 am

3:00 am

4:00 am

5:00 am

Midnight

(DST +1.0)

 

 

 

 

 

 

 

 

Daylight Saving

2:00 am

3:00 am

4:00 am

5:00 am

Midnight

1:00 am

 

 

Time

 

 

 

 

 

 

next day

 

 

 

 

 

 

 

 

+ 1.0

Standard Time

2:00 am

3:00 am

4:00 am

5:00 am

Midnight

1:00 am

(DST +2.0)

 

 

 

 

 

 

 

next day

 

 

 

 

 

 

 

 

 

Daylight Saving

3:00 am

4:00 am

5:00 am

Midnight

1:00 am

2:00 am

 

Time

 

 

 

 

 

next day

next day

 

 

 

 

 

 

 

 

+ 2.0

Standard Time

3:00 am

4:00 am

5:00 am

Midnight

1:00 am

2:00 am

(DST +3.0)

 

 

 

 

 

 

next day

next day

 

 

 

 

 

 

 

 

 

Daylight Saving

4:00 am

5:00 am

Midnight

1:00 am

2:00 am

3:00 am

 

Time

 

 

 

 

next day

next day

next day

 

 

 

 

 

 

 

 

 

Note

The auto receive operation is performed only if the watch is in the Timekeeping Mode or Dual Time Mode when a calibration time is reached. It is not performed if a calibration time is reached while an alarm is sounding or while you are configuring settings.

Auto receive of the calibration signal is designed to be performed early in the morning, while you sleep (provided that the Timekeeping Mode time is set correctly). Before going to bed for the night, remove the watch from your wrist, and put it in a location where it can receive the signal easily.

The watch receives the calibration signal for two to 14 minutes everyday when the time in the Timekeeping Mode reaches each of the calibration times. Avoid performing any button operation within 14 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 current time in the Timekeeping Mode.

To perform manual receive

1. Place the watch on a stable surface so its 12 o’clock

side is facing towards a window.

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

seconds until the watch beeps.

3. The stopwatch second hand will move to R (READY) to

indicate that the watch is setting up for time calibration

reception.

The second hand will move to W (WORK) and stay there while actual reception is in progress.

The hour and minute hands continue to keep time normally.

Time calibration signal reception takes from two to

seven minutes, but in some cases it can take up to 14

minutes. Take care that you do not perform any button

operations or move the watch during this time.

If reception is successful, the second hand will move to

Y (YES). One minute later, the hands will move to the correct time.

Note

To interrupt a receive operation and return to the Timekeeping Mode, press any button.

If reception is not successful, the stopwatch second hand will move to N (NO).

One minute later, the stopwatch second hand will resume normal operation, without any adjustment of the hand setting.

If the stopwatch second hand is pointing to Y (YES) or N (NO), you can return to the Timekeeping Mode by pressing any button.

Viewing the Latest Signal Reception Results

You can use the Receive Result Mode to check if signal reception was performed correctly.

To check the latest signal reception results

1. In the Timekeeping Mode, press A.

If the watch was able to perform a successful signal receive operation since midnight, the stopwatch second

hand will move to Y (YES). If the watch has been unable to receive any signal successfully, the second hand will move to N (NO).

The watch will return to the Timekeeping Mode after five seconds.

The current receive result is cleared when the first auto receive operation is performed on the following day. This means Y (YES) indicates successful signal reception since the start of the current day.

If you adjust the time or date setting manually, the second hand will move to N (NO).

Signal Reception Troubleshooting

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

Problem

Probable Cause

What you should do

The

You changed the time setting

Perform manual signal

stopwatch

manually.

receive or wait until the next

second hand

You performed some button operation

auto signal receive operation

is pointing at

during the auto receive operation.

is performed.

N (NO).

Signal reception results are reset

Check to make sure the

 

when the first auto receive

watch is in a location where it

 

operation of the day is performed.

can receive the signal.

Time setting is

The Home Time Zone setting is not

Select the correct Home

incorrect

correct for the area where you are

Time Zone.

following signal

using the watch.

 

reception.

 

 

 

 

 

For further information, see “Important!” under “Time Calibration Signal Reception” and “Radio-controlled Atomic Timekeeping Precautions”.

Stopwatch

Stopwatch 1/20 second hand

* This hand rotates and indicates the second count during the first 60 seconds.

Second hand

Stopwatch

1/100 second

 

Stopwatch minute hand

The stopwatch lets you measure elapsed time,.

The display range of the stopwatch is 59 minutes, 59.99 seconds.

Entering the Stopwatch Mode causes the second hand, the stopwatch minute hand and stopwatch 1/20 second hand to move to the 12 o’clock position.

The stopwatch continues to run, restarting from zero after it reaches its limit, until you stop it.

The stopwatch measurement operation continues even if you exit the Stopwatch Mode.

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

To measure elapsed time

1.Press B to start the stopwatch.

2.Press B to stop the stopwatch.

You can resume the measurement operation by pressing B again.

The 1/20 second hand rotates during the first 60 seconds only, and then stops. When elapsed timing is stopped (by pressing B), this hand jumps to the 1/20 second indication (which is kept internally).

3.Check the elapsed time.

Press Ato reset the stopwatch.

Dual Time

Minus sign

GMT differential value(-4.0)

The Dual Time Mode lets you view the current time in 29 time zones around the world.

Time zones are indicated on the digital display by their GMT differential values.

For full information on time zones, see the “Time Zone Table”.

The watch will perform a signal receive operation even if it is in the Dual Time Mode when a calibration time is reached. If this happens, the Dual Time Mode time settings will be adjusted in accordance with the current time in the Timekeeping Mode’s Home Time Zone.

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

To view the time in another time zone

While in the Dual Time Mode, press Bto scroll eastward through time zones.

When you release B, the hands will move to the current time in that time zone after about one second.

If the current time shown for a time zone is wrong, check the Timekeeping Mode time setting and your Home Time Zone setting, and make the necessary changes.

To toggle a time zone between Standard Time and Daylight Saving Time

1. In the Dual Time Mode, use Bto display the time zone whose Standard Time/Daylight Saving Time setting you

 

want to change.

 

2. Hold down Ato toggle between Daylight Saving Time

 

(DST indicator displayed) and Standard Time (DST

l

indicator not displayed).

ll lll

llllllllll

 

Turning on DST causes the GMT differential value to be

 

increased by one.

 

The DST indicator appears on the display whenever you

DST indicator

display a time zone for which Daylight Saving Time is

 

turned on.

The DST/Standard Time setting you configure affects only the currently displayed time zone. Other time zones are not affected.

The (GMT: Greenwich Mean Time) time zone cannot be switched between Standard Time and Daylight Saving Time.

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