Casio 2730 Operation Manual Download Page 4

Operation Guide 2730

4

Specifying the Transmitter
Selection Mode

When Tokyo (TYO) is selected as the Home City, you can select
either of two different transmitters for reception.

For information about selecting a Home City, see “Setting the
Time and Date Manually”.

The initial factory default settings of the watch are TYO (Tokyo) for
the Home City, and AT (auto select) for the transmitter selection
mode.

1.

In the Timekeeping Mode,
hold down the 

A

A

A

A

A

 button

for about two seconds,
until the current
transmitter selection
mode indicator flashes on
the display.

This is the setting screen.

The second hand moves to
the 12 o’clock position.

Viewing the Last Reception Date and Time

In the Timekeeping Mode, press the 

D

D

D

D

D

 button. This displays

the date and time of the last successful signal reception.

The month and day screen and hour and minute screen alternate
at two-second intervals.

To return to the Timekeeping Mode, press the 

D

 button again.

The display also returns to the normal timekeeping screen
automatically if you do not perform any operation for about one or
two minutes.

2-second 

interval

2.

Press the 

D

D

D

D

D

 button to

cycle through the available
transmitter select mode
settings, described below.

 AT

With this setting, the watch automatically selects either the Mt.
Otakadoya signal (40kHz) or the Mt. Hagane signal (60kHz),
whichever is strongest.

 40 JPN

With this setting, the watch always receives the Mt. Otakadoya
signal (40kHz).

 60 JPN

With this setting, the watch always receives the Mt. Hagane
signal (60kHz).

3.

When the setting you want is displayed, press the 

A

A

A

A

A

button twice to exit the setting screen.

At this time, the analog hands will adjust automatically to the
digital time.

The display also will exit the setting screen automatically if
you do not perform any operation for about two or three
minutes.

Time setting is incorrect following signal reception.

Cause:

If the current time is advanced by one
hour, it probably means that summer time
is turned on (indicated by the DST
indicator on the display).

If there is a large error in the setting, it
probably means that the wrong Home
City is selected.

Corrective Measures:

Correctly configure the summer time and
Home City settings as detailed under
“Turning Summer Time On and Off” and
“Setting the Time and Date Manually”.

If you cannot receive the calibration signal or if the current time
setting is incorrect after signal reception, check the current setup
of the watch.

The following are the watch’s factory default settings, which
are configured automatically whenever you have the
battery of the watch replaced.

Troubleshooting

Cannot perform manual reception.

Cause:

Manual receive can be performed in the
Timekeeping Mode only.

The Home City is set to a city other than
TYO (Tokyo), NYC (New York), CHI
(Chicago), DEN (Denver), or LAX (Los
Angeles).

Corrective Measures:

Perform manual receive in the
Timekeeping Mode.

Change the Home City to TYO (Tokyo),
NYC (New York), CHI (Chicago), DEN
(Denver), or LAX (Los Angeles).
Correctly set the Home City as detailed
under “Setting the Time and Date
Manually”.

The 

 icon is not on the display even though auto signal

reception is turned on.

Cause:

The 

 icon appears after the watch

successfully receives the calibration signal
and adjusts the current time setting.

A single receive operation was not
successful.

The watch is not in the Timekeeping
Mode or World Time Mode when an auto
reception time is reached.

Corrective Measures:

Check to make sure the watch is in a
location where it can receive the signal.

Place the watch in a location where
reception conditions are good.

Make sure that the watch is in the
Timekeeping Mode or World Time Mode
during the auto reception times.

You performed manual reception, which
clears the 

 icon from the display.

Calibration Signal Reception
Precautions

Auto reception can be performed while the watch is in the
Timekeeping Mode or World Time Mode only.

Receipt of a calibration signal causes the digital time to be adjusted
first, followed by adjustment of the analog time. In order to ensure
correct ajustment of the analog time, be sure to match the analog time
with the digital time before performing a signal receive operation.

Note that analog timekeeping is not performed during signal
reception, so the time indicated by the analog hands may be
wrong.

Operating any button while auto reception is in progress will
cause the watch to beep and then exit the receive operation.

Make sure you are within the range of the calibration signal
transmitter before performing the reception operation. Remember
that geographic contours, nearby buildings, the season, the time
of day, can make reception impossible even when you are within
range of the transmitter.

Proper reception may be impossible if there is something blocking
the signal. If reception is unsuccessful, try again.

This watch is designed to adjust its current time setting in
accordance with the calibration signal transmitted in Japan and
the United States only. Note that you will need to make your own
adjustments when using this watch outside of Japan or the United
States, or in any area that is outside the range of one of the
receivable time calibration signal transmitters.

When the watch is unable to adjust its time signal using the
calibration signal for some reason, timekeeping accuracy is within

±

15 seconds per month.

Strong electrostatic charge can cause timekeeping error.

Signal reception is cancelled if an alarm starts to sound while it is
being performed.

The watch’s calendar shows dates up to the year 2099.
Attempting a receive operation after that causes an error.

 On

Auto receive is turned on.

 OF

Selecting this setting turns off auto receive and auto
transmitter selection.

Turning Auto Receive On and Off

1.

In the Timekeeping Mode,
hold down the 

A

A

A

A

A

 button

for about two seconds,
until the current
transmitter selection mode
indicator flashes on the
display.

This is the setting screen.

The second hand moves to
the 12 o’clock.

2.

Press the 

C

C

C

C

C

 button three

times.

This causes the current auto
receive setting (On or OF) to
flash on the display.

3.

Press the 

D

D

D

D

D

 button to

toggle auto receive on and
off.

Three Times

Auto Receive

Transmitter

Home City

Summer Time

On

Auto Japan transmitter  
select (40kHz/ 60kHz)

Tokyo

Auto switching (according  
to signal data)

4.

When the setting you want is displayed, press the 

A

A

A

A

A

button twice to exit the setting screen.

At this time, the second hand will adjust automatically to the
digital time.

The display also will exit the setting screen automatically if
you do not perform any operation for about two or three
minutes.

Summary of Contents for 2730

Page 1: ...Screen Day Day of the Week PM Indicator no indicator for AM Seconds Month Hour Minutes Days of the Week SU Sunday MO Monday TU Tuesday WE Wednesday T H Thursday FR Friday SA Saturday How the sleep state works There are actually two sleep state levels a display sleep state and a function sleep state Display sleep state The display sleep state is triggered whenever the watch is left in the dark for ...

Page 2: ...ioning Your Arm Correctly Auto Light Precautions Frequent use of the auto light can run down the battery The display may not illuminate immediately when you angle the watch towards your face This does not indicate malfunction The display remains lit for about 1 5 seconds only even if you leave the watch angled towards your face The display may illuminate unintentionally when you wear the watch on ...

Page 3: ...e and time the adjustment was performed The icon on the display also indicates successful signal reception Following successful reception the analog hands adjust automatically to the digital time When reception fails The watch does not adjust its current time setting and displays ERR instead The display also returns to the normal timekeeping screen automatically if you do not perform any operation...

Page 4: ...the calibration signal and adjusts the current time setting A single receive operation was not successful The watch is not in the Timekeeping Mode or World Time Mode when an auto reception time is reached Corrective Measures Check to make sure the watch is in a location where it can receive the signal Place the watch in a location where reception conditions are good Make sure that the watch is in ...

Page 5: ...rsal Time Coordinated UTC World Time Mode Deleting Time Stamp Records While the Time Stamp recall screen is on the display press the A A A A A button and D D D D D button at the same time This causes CLR to flash on the display as all of the Time Stamp records are deleted After data delete is complete the display stops flashing and the standby screen reappears Note that you cannot delete individua...

Page 6: ...rom right to left three characters at a time The end of the record is indicated by the symbol The data of the currently displayed record does not scroll when you press the A button if it contains two or fewer characters Creating an e DATA MEMORY Data Record 1 In the e DATA MEMORY Mode press the A A A A A button and D D D D D button at the same time This will display the remaining memory screen If ...

Page 7: ...eeping Mode time is also applied in the Alarm Mode 4 Press the C C C C C button to move the flashing to the minute digits As with the hour setting use the D and B buttons to change the minute setting Each press of C moves the flashing between the hour digits and the minute digits as shown below Hour Minutes 5 When the alarm time is the way you want press the A A A A A button This exits the setting...

Page 8: ... the D button to toggle it ON and OFF Turning on Power Saving causes the Power Saving indicator to appear on the setting screen 9 After all of the settings are configured the way you want press the A A A A A button This exits the setting screen The display also will exit the setting screen automatically if you do not perform any operation for about two or three minutes Digital Analog Synchronizati...

Page 9: ... hands press the B button to lock the high speed movement While holding down the B button to start high speed counter clockwise movement of the hands press the D button to lock the high speed movement High speed movement of the hands will continue until it completes a 12 hour cycle or until you press any button to stop it 5 When analog hands are set the way you want press the A A A A A button This...

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