Casio 2924 World Time, Signal Receive Troubleshooting, RC, SEL, TYO, Note, Note, Problem, Frequency, Transmitter, Home City Code, Probable Cause, About Auto Receive

Operation Guide 2924

•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 five 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.

To perform manual receive

1.Place the watch on a stable surface so its top (12 o’clock side) is facing towards a window.

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

	seconds until the watch beeps.
	• Release D and the message RC! appears to indicate
	that signal reception has started.
	• After signal reception is complete, the display of the
	watch changes to the Last Signal screen.
	Note
Receiving indicator
	• 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 configure the auto receive setting for the U.S.

• When within range of the applicable transmitter, this watch can receive either the

U.S. (Fort Collins, Colorado) or Japanese (Fukushima or Fukuoka/Saga) time

calibration signal. The signal the watch will attempt to pick up depends on its current

Home City code setting as shown below.

Home City Code	Transmitter	Frequency
LAX, DEN, CHI, NYC	Fort Collins, Colorado	60kHz
TYO or SEL*	Fukushima	40kHz
	Fukuoka/Saga	60kHz

*With TYO or SEL, you can specify either 40kHz or 60kHz.

2,000 miles	500
	500

On/Off status

l	l	l	l	l l
					l
ll					l
l	l l		l l l		l	l

l	l l l		l	l l l
						l
l						l
l		l l	l	l l	l

•The following procedure applies when you have LAX,

DEN, CHI or NYC selected as your Home City. If you are using the watch in Japan, see “To configure auto receive settings for Japan”.

1.In the Timekeeping Mode, press D to display the Last Signal screen.

2.Hold down A until the receiving indicator and current auto receive setting (ON or OFF) start to flash. This is the setting screen.

•If TYO or SEL is selected as the Home City, you can specify a transmitter selection mode.

•Note that the setting screen will not appear if the currently selected Home City is one that does not support time calibration reception.

600 miles kilometers

	kilometers
Fukuoka/Saga
1,000	Fukushima
kilometers	1,000
Fort Collins	kilometers

•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.

Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)

Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)

•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 starts to receive the time calibration signal automatically when the time in the Timekeeping Mode reaches midnight, 1:00 a.m., and 2:00 a.m. (calibration times).

If both the 1 o’clock and 2 o’clock signal receptions are not successful, the watch will try to receive the signal again at the top of each hour up until 5:00 a.m. or until one more reception is successful.

Note

•Auto receive works only while the watch is in the Timekeeping Mode or World Time Mode. Auto receive is not performed if an auto receive time is reached while an alarm is sounding, while a countdown timer operation is in progress, or if a setting screen (a screen with a flashing setting) is 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 receive the signal easily.

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

•If more than one auto receive is successful, the watch uses the data from the last successful receive to adjust settings. 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.

	Weak	Strong
Receiving indicator	(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 receive both time and date data successfully. 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 2:00 a.m. each day.

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

4.Press Ato exit the setting screen.

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

To display the Last Signal screen

In the Timekeeping Mode, press Dto 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.

	Receive date
PM	Receive time
indicator Month – Day
Press D.
▲	▲

	Last Signal Screen
Hour : Minutes Seconds

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, NYC,
	LAX, DEN, CHI, NYC, SEL, or TYO.	SEL, or TYO as your Home
		City.
Auto receive is	• You changed the time setting	• Perform manual signal receive
turned on, but	manually.	or wait until the next auto
the Level 4	• The watch was not in the Timekeeping	signal receive operation is
receiving	or World Time Mode, or you performed	performed.
indicator does	some button operation during the auto	• Check to make sure the
not appear on	receive operation.	watch is in a location where it
the display.	• Even if receive is successful, the Level	can receive the signal.
	4 receiving indicator disappears every
	day at 2 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	code.
	using the watch.

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

World Time

City code	The World Time Mode shows you the current time in 30
	cities (29 time zones) around the world.

•If the current time shown for a city is wrong, check your Home City time settings and make the necessary changes.

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

Current time in selected city

To view the time in another city

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

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

2