Casio 4350 Dual Time, Stopwatch, Viewing the Latest Signal Reception Results, Note, Note, N (NO), N (NO), N (NO), N (NO), N (NO), Y (YES), Y (YES), Y (YES), Y (YES)

Operation Guide 4350

•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 four 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.

•The time calibration signal the watch will attempt to pick up depends on its current Home City code setting as shown below.

Home City Code	Transmitter	Frequency

ET (GMT –5),CT (GMT –6)	Fort Collins, Colorado
MT (GMT –7),PT (GMT –8)	Fort Collins, Colorado	60.0 kHz
MT (GMT –7),PT (GMT –8)	(the United States)	60.0 kHz
–09 (GMT –9),–10 (GMT –10)	(the United States)
–09 (GMT –9),–10 (GMT –10)

TYO (GMT +9)	Fukushima (Japan)	40.0 kHz
TYO (GMT +9)	Fukuoka/Saga (Japan)	60.0 kHz
	Fukuoka/Saga (Japan)	60.0 kHz

Reception Ranges

2,000 miles

(3,000 kilometers)

600 miles

(1,000 kilometers)

Fort Collins

500

kilometers500 kilometers

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

•At distances further than about 600 miles (1,000 kilometers) from the Fort Collins (the United States) transmitter, signal reception may not be possible during certain times of year or times of day. Radio interferance may also cause problems with reception.

•At distances further than about 500 kilometers (310 miles) from the Fukushima and Fukuoka/Saga (Japan) transmitter, signal reception may not be possible during certain times of year or times of day. Radio interferance may also cause problems with reception.

•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 Home Time Zone.

Your Home Time Zone			Auto Receive Start Times
		1	2	3	4	5	6
TYO (GMT +9)	Standard Time	Midnight	1:00 am	2:00 am	3:00 am	4:00 am	5:00 am

ET (GMT –5),	Standard Time and	Midnight	1:00 am	2:00 am	3:00 am	4:00 am	5:00 am
CT (GMT –6),	Daylight Saving Time
MT (GMT –7),
PT (GMT –8),
–09 (GMT –9),
–10 (GMT –10)

Note

• Auto receive is supported in all modes except while a stopwatch elapsed time

operation is in progress.

• 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

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.
	R(READY)	• The second hand will move to W (WORK) and stay there
	R(READY)	while actual reception is in progress.
		while actual reception is in progress.
	W(WORK)	• The hour and minute hands continue to keep time
	Y(YES)	normally.
	Y(YES)	• Time calibration signal reception takes from four to
		• Time calibration signal reception takes from four 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). 10 seconds later, the hands will move to the
	N(NO)	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).

5 second 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 or when you press A.

• 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.

•Y (YES) continues to be indicated even if an attempt at manual receive fails after auto receive is successful.

•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	• The watch was not in the	auto signal receive operation
is pointing at	Timekeeping Mode, or you performed	is performed.
N (NO).	some button operation during the	• Check to make sure the
	auto receive operation.	watch is in a location where it
	• Signal reception results are reset at	can receive the signal.
	midnight each day.
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”.

Dual Time

Dual Time minute hand	The Dual Time lets you keep track of time in a different
Dual Time minute hand	time (24-hour format).
	• All of the operations in this section are performed in the
	Timekeeping Mode.
	• The Dual Time is synchronized with the current time.
	To set the Dual Time
	1. In the Timekeeping Mode, each press of Dadvances
	Dual Time 30 minutes. Press Dto set the Dual Time
	that you want.
Dual Time hour hand
Stopwatch

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. Do not perform

any button operation within ten 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.

Stopwatch second hand

•Stopwatch hour hand (24-hour format)

•Stopwatch minute hand

Stopwatch 1/20 second hand

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

The stopwatch lets you measure elapsed time.

•The display range of the stopwatch is 23 hours, 59 minutes, 59.95 seconds.

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

•You cannot switch to another mode while a stopwatch elapsed time operation is in progress.

•All of the operations in this section are performed in the Stopwatch Mode.

To measure elapsed time

1.Press Bto start the stopwatch.

2.Press Bto 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.