Casio 3345 World Time, Signal Reception Troubleshooting, LON, Note, Note, Problem, Probable Cause, About Auto Receive, What you should do, To perform manual receive

Operation Guide 3309 3345

•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

•Time calibration signal reception normally 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.

•After signal reception is complete, the display of the watch changes to the last signal screen.

Note

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

•If the reception 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

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.

1,000 kilometers

Rugby

On/off status

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

•The second hand will move at high speed to the 12 o’clock position, where it will stop.

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 auto receive, “--” 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.

500 kilometers Mainflingen

•This watch is designed to receive the time calibration signal transmitted from Rugby, England and the signal from Mainflingen, Germany. Signal reception is possible within the area represented by a circle with a radius of about 1,000 kilometers.

•At distances further than about 500 kilometers from a transmitter, signal reception may not be possible during certain times of year or times of day. Radio interference may also cause problems with reception.

•See the information under “Signal Reception 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 time in the Timekeeping Mode reaches 0:00 a.m., 1:00 a.m., 2:00 a.m., 3:00 a.m., and 4:00 a.m. each day (calibration times). The watch will also perform an additional auto receive at 5:00 a.m. if none of the regularly scheduled auto receive are successful.

Note

• Auto receive 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).

• When a reception starts, the second hand will move at high speed to the 12 o’clock

position where it will stop until the reception is complete.

• 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

seven minutes everyday when the time in the Timekeeping Mode reaches each of

the five calibration times. Do not perform any button operation within seven minutes

before or after any of the five calibration times. Doing so can interfere with correct

calibration.

• Remember that reception of the calibration signal depends on the time kept in the

•The second hand will advance at high speed to the correct position in accordance with the digital time seconds count, and resume normal movement from there.

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

Signal Reception Troubleshooting

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

Problem	Probable Cause	What you should do
Cannot	• The watch is not in the Timekeeping	• Enter the Timekeeping Mode and
perform	Mode.	try again.
manual	• Your current Home City is not one of	• Select BER, PAR, or LON as your
receive.	the following city codes: BER, PAR, or	Home City.
	LON.	• Select the appropriate transmitter
		setting for your current location.
Auto receive is	• You changed the time setting	• Select the appropriate transmitter
turned on, but	manually.	setting for your current location.
the Level 4	• The watch was not in the Timekeeping	• Perform manual receive or wait
receiving	or World Time Mode, or you were	until the next auto receive is
indicator does	performing some button operation	performed.
not appear on	during auto receive.	• Check to make sure the watch is
the	• Even if reception is successful, the	in a location where it can receive
Timekeeping	Level 4 receiving indicator	the signal.
Mode display.	disappears every day at 3 a.m.
	• Time data (hour, minutes, seconds)
	only was received during the last
	reception. The Level 4 receiving
	indicator appears only when time data
	and date data (year, month, day) are
	both received.
Time setting	• If the time is one hour off, the DST	• Change the DST setting to Auto
is incorrect	setting may be incorrect.	DST.
following	• The Home City code setting is not	• Select the correct Home City
signal	correct for the area where you are	code.
reception.	using the watch.

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

World Time

digital display. The reception will be performed whenever the display shows one of

the five calibration times, regardless of whether or not the displayed time is actually

the correct time.

• When two, three, four, or five 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

City Code

Current time in the selected city code

The World Time Mode digitally displays the current time in 30 cities (29 time zones) around the world.

•Pressing A in the World Time Mode causes the applicable city code to appear on the digital display for about two seconds.

•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 reception 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.

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

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 reception.

•The Level 4 receiving indicator appears on the Timekeeping Mode’s Receiving Indicator and Seconds Count screen only. The Level 4 receiving indicator is not displayed if signal reception was unsuccessful or after manual adjustment of the current time setting.

•The Level 4 receiving indicator indicates that at least one of the five calibration signal reception 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
	seconds until the watch beeps.
	3. Release D and RC flashes to indicate that signal

reception has started.

• When a reception starts, the second hand will move at

high speed to the 12 o’clock position where it will stop

until the reception is complete.

To view the time in another city

While in the World Time Mode, press Dto 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 Dto display the city code (time zone) whose Standard Time/Daylight Saving Time

	setting you want to change.
	• Pressing Ain the World Time Mode causes the
	applicable city code to appear on the digital display for
	about two seconds.
	2. Hold down Ato toggle Daylight Saving Time (DST
	indicator displayed) and Standard Time (DST indicator
DST indicator
	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 will appear on the display whenever you display a city code for which Daylight Saving Time is turned on.

•Note that you cannot switch between Standard Time and Daylight Saving Time while GMT is selected as the city code.

•Note that the DST/Standard Time setting affects only the currently displayed city code. Other city codes are not affected.

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