Casio 3747, 4772 User Manual

MO0610-EA

Operation Guide COMBIWAVE1

About This Manual

•The operational procedures for Modules 2735, 3747, and 4772 are identical. All of the illustrations in this manual show Module 2735.

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

•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.

Module 2735

Module 3747

Module 4772

•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 Cto change from mode to mode.

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

	World Time Mode
Timekeeping Mode	Press C.
	▲
	Hand Setting Mode
▲	▲

Radio-controlled Atomic Timekeeping

	Hour hand								This watch receives a time calibration signal and updates
						Minutes hand			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,
		Day				of week			and Mexico.
									Current Time Setting
	Month – Day
									This watch automatically adjusts its digital time setting 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 set your Home City, which is the city where you will normally 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 manually adjust the time as required. See “Timekeeping” 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.

To set your Home City

Transmitter indicator

City code

1.In the Timekeeping Mode, hold down Auntil the transmitter indicator (USA) starts to flash, which indicates the setting screen.

2.Press Cto display the city code setting screen.

3.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.

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

DEN: Denver, El Paso, Edmonton, Culiacan CHI: Chicago, Houston, Dallas/Fort Worth,

New Orleans, Winnipeg, Mexico City NYC: New York, Detroit, Miami, Boston, Montreal

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

4.Press A twice to exit the setting screen.

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

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 automatically picks up the time calibration signal four times a day at 2:00 a.m., 3:00 a.m., 4:00 a.m., and 5:00 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”.

Alarm Mode	Date Alert Mode
▲	▲

Stopwatch Mode	Time Recorder Mode
▲	▲

Important!

•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.

Resin Band Metal Band

•The watch should not be on its side or facing the wrong 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 or	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 six minutes, but in some cases it can take as long as 12 minutes. Take care that you do not perform any button operations or move the watch during this time.

600 miles

2,000 miles

Fort Collins

•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 interference 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 automatically starts to receive the time calibration signal when the digital time in the Timekeeping Mode reaches 2:00 a.m., 3:00 a.m., 4:00 a.m., and 5:00 a.m. each day (calibration times).

1

On/off status

DST indicator

Operation Guide COMBIWAVE1

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 receipt 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 easily receive the signal.

•When auto receive is turned on, the watch receives the calibration signal for two to six minutes everyday when the digital time in the Timekeeping Mode reaches each of the calibration times. Do not perform 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 digital display. The receive operation will be performed whenever the display shows any one of the calibration times, regardless of whether or not the displayed time is actually 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.

Receiving indicator

l l			ll	l	l		l l
l								l
l	l	l	l	l		l	l
								Weak	Strong
								(Level 1)	(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.

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

•The Level 4 receiving indicator is displayed only when the watch is able to successfully receive both time and date data. It does not appear when only time data is received.

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

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

Receiving indicator

o’clock side) is facing towards a window.

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

l

ll

l

l

l

seconds until the watch beeps.

l

l

3. Release Dand the current time flashes to indicate that

l

l

l

l

l

l

l l

l

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.

Note

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

•If the receive operation is unsuccessful, the message ERR 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 ERR screen to the normal timekeeping screen by pressing D.

To turn auto receive on and off

1. In the Timekeeping Mode, hold down Auntil the transmitter indicator starts to flash, which indicates the setting screen.

2.Press Cthree times to move the flashing to the auto receive on/off setting.

3.Press Dto toggle auto receive on (ON) and off (OF).

•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 Atwice to exit the setting screen.

•For information about city codes that support signal receive, see “To set your Home City”.

To display the digital time and Last Signal screen

•In the Timekeeping Mode, press A to cycle through the digital time screens as shown below.

•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.

Month – Day Hour: Minutes Seconds Month – Day

		▲	▲
		Press A.	A
		▲	Seconds
Day of week			A
▲		Receive date	Receive time
Press D.	▲		Alternate at two-
			second interval

Last Signal Screen

Signal Receive Troubleshooting

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

Problem	Probable Cause	What you should do
Cannot perform	• The watch is not in the Timekeeping Mode.	• Enter the Timekeeping Mode
manual receive.	• Your current Home City is not one of the	and try again.
	following city codes:	• Select LAX, DEN, CHI, or
	LAX, DEN, CHI, or NYC.	NYC as your Home City.
Auto receive is	• You changed the time setting manually.	• Perform manual signal receive
turned on, but	• The watch was not in the Timekeeping	or wait until the next auto
the Level 4	or World Time Mode, or you performed	signal receive operation is
receiving	some button operation during the auto	performed.
indicator does	receive operation.	• Check to make sure the watch
not appear on	• Even if receive is successful, the Level 4	is in a location where it can
the display.	receiving indicator disappears every day	receive the signal.
	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.
Time setting is	• If the time is one hour off, the DST	• Change the DST setting to
incorrect	setting may be incorrect.	Auto DST.
following signal	• The Home City code setting is not	• Select the correct Home City
reception.	correct for the area where you are using	code.
	the watch.

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

World Time

	Current time in the					The World Time shows the current time in 30 cities (29
						time zones) around the world.
	selected city code
						• If the current time shown for a city is wrong, check your
						Home City time settings and make the necessary
						changes.
						• 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
						Timekeeping Mode’s Home City time.
	City Code
						• All of the operations in this section are performed in the
						World Time Mode, which you enter by pressing C.

To view the time in another city

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

• For full information on city codes, see the “City Code Table”.

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

1.In the World Time Mode, use 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 displayed) and Standard Time (DST not displayed).

• Note that you cannot use the World Time Mode to change the DST setting of the Home City code you currently have selected in the Timekeeping Mode. See “To change the Daylight Saving Time (summer time) setting” for information about turning the Home City code DST setting on and off.

•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.

Alarms

Alarm time (Hour : Minutes)

Alarm name

Hourly Time

Signal Screen

To set an alarm time

The Alarm Mode gives you a choice of four one-time alarms and one snooze alarm. One of the one-time alarms functions as a “target alarm,” which counts the time remaining from the current Home City time to the target alarm time.

Also use the Alarm Mode to turn the Hourly Time Signal on and off.

•There are five alarms named AL1, AL2, AL3, TAL (target alarm), and SNZ. You can configure SNZ as a snooze alarm only. Alarms AL1, AL2, AL3, and TAL can be used as one-time alarms only.

•Alarm settings (and Hourly Time Signal settings) are

available in the Alarm Mode, which you enter by pressing C.

1.In the Alarm Mode, use Dto scroll through the alarm screens until the one whose time you want to set is displayed.

ll	l l l	ll			AL1	AL2	AL3
l			l
ll			l
l			l	l
l	l l l	l

SIG SNZ TAL

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 automatically turns on the alarm.

3.Use 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-hour format, take care to set the time

correctly as a.m. (no indicator) or p.m. (P indicator).

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