Casio 5135 Time Calibration Signal Reception, HNL, ANC, HKG, TYO, HNL, ANC, LON, PAR, ATH, HKG, TYO, HNL, ANC, LAX, DEN, CHI, NYC, GET, GET, Note, WORK, Note, READY

Operation Guide 5135

4. Press A to exit the setting screen.

Japan Signals

• 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

500 kilometers

500 kilometers

operation (in the middle of the night). You also can perform manual receive or you

can set the time manually.

• The watch will receive the time calibration signal automatically from the applicable

transmitter (in the middle of the night) and update its settings accordingly. For

information about the relationship between city codes and transmitters, see

“Important!” under “Time Calibration Signal Reception” and “Transmitters”.

Fukuoka/Saga

1,000 kilometers

Fukushima

1,000 kilometers

• See the maps under “Approximate Reception Ranges” for information about the

reception ranges of the watch.

• You can disable time signal reception, if you want. See “To turn auto receive on and

off” for more information.

• Under factory default settings, auto receive is turned off for all of the following city

codes: HNL (Honolulu) and ANC (Anchorage). For details about turning on auto

receive for these city codes, see “To turn auto receive on and off”.

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 receives the time calibration signal automatically up to 6 times a day (5 times a day for the Chinese calibration signal). When any auto receive is successful, the remaining auto receive operations are not performed. 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”.

Important!

•When getting ready to receive the time calibration signal, position the watch as shown in the nearby illustration, with its 12 o’clock side pointing towards a window. This watch is designed to receive a time calibration signal late at night. Because of this, you should place the watch near a window as shown in the illustration when you take it off at night. Make sure there are no metal objects nearby.

12 o’clock

or

•Make sure the watch is facing the right 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 power	behind
buildings		appliances,	site, airport,	lines	mountains
		office	or other
		equipment,	sources of
		or a mobile	electrical
		phone	noise

•Signal reception normally is better at night than during the day.

•Time calibration signal reception takes from three to eight minutes, but in some cases it can take as long as 16 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
LON, PAR, ATH	Anthorn (England)	60.0 kHz
	Mainflingen (Germany)	77.5 kHz
HKG	Shangqiu City (China)	68.5 kHz
TYO	Fukushima (Japan)	40.0 kHz
	Fukuoka/Saga (Japan)	60.0 kHz
HNL*, ANC*, LAX,	Fort Collins, Colorado	60.0 kHz
DEN, CHI, NYC	(the United States)

*The areas covered by the HNL and ANC city codes are quite far from the time calibration signal transmitters, and so certain conditions may cause problems with signal reception.

•Calibration signal reception is disabled while a countdown timer operation is in progress.

Approximate Reception Ranges

U.K. and German Signals

1,500 kilometers

Mainflingen

Anthorn

U.S. Signal

500 kilometers

2,000 miles

(3,000 kilometers)

The Anthorn signal is receivable within

this area.

600 miles (1,000 kilometers)

Fort Collins

China Signal

1,500 kilometers

Changchun

500 kilometers	Beijing
Chengdu	Shanghai
Shangqiu	Hong Kong

•Signal reception may not be possible at the distances noted below during certain times of the year or day. Radio interference also may cause problems with reception.

Mainflingen (Germany) or Anthorn (England) transmitters: 500 kilometers (310 miles)

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

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

Shangqiu (China) transmitter: 1,500 kilometers (910 miles)

•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 6 times a day (5 times a day for the Chinese calibration signal). 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 City, and whether standard time or Daylight Saving Time is selected for your Home City.

	Your Home City		Auto Receive Start Times
		1	2	3	4	5	6
LON	Standard Time	1:00 am	2:00 am	3:00 am	4:00 am	5:00 am	Midnight*
	Daylight Saving Time	2:00 am	3:00 am	4:00 am	5:00 am	Midnight*	1:00 am*
PAR	Standard Time	2:00 am	3:00 am	4:00 am	5:00 am	Midnight*	1:00 am*
	Daylight Saving Time	3:00 am	4:00 am	5:00 am	Midnight*	1:00 am*	2:00 am*
ATH	Standard Time	3:00 am	4:00 am	5:00 am	Midnight*	1:00 am*	2:00 am*
	Daylight Saving Time	4:00 am	5:00 am	Midnight*	1:00 am*	2:00 am*	3:00 am*
HKG	Standard Time and	1:00 am	2:00 am	3:00 am	4:00 am	5:00 am
	Daylight Saving Time
TYO	Standard Time	Midnight	1:00 am	2:00 am	3:00 am	4:00 am	5:00 am
HNL	Standard Time and	Midnight	1:00 am	2:00 am	3:00 am	4:00 am	5:00 am
ANC	Daylight Saving Time
LAX
DEN
CHI
NYC
Note							*Next day

•When a calibration time is reached, the watch will receive the calibration signal only if it is in either the Timekeeping Mode or World Time Mode. Reception is not performed if a calibration time is reached while you are configuring settings.

•Auto receive 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.

•Remember that reception of the calibration signal depends on the current time 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 displayed time actually is the correct time.

To perform manual receive

1. While in the Timekeeping Mode or Battery/Receive

Receiving	Mode, hold down Cfor about two seconds.
	• The second hand will move to READY (R) and signal
	reception will start.
	• The digital display will go blank at this time.
	• The second hand will indicate the current reception
	status.
	READY (or R) : Unstable
	WORK (or W) : Stable
	• Keep the watch in a location where reception is stable
	while a receive operation is in progress.
READY (or R)	• Signal reception takes from three to eight minutes, but
	in some cases it can take as long as 16 minutes. Take
	care that you do not perform any button operations or
	move the watch during this time.

•Even under optimum reception conditions, it can take about 30 seconds for reception to stabilize.

•Check the second hand position to find out the status of a receive operation and to determine the best location for signal reception.

•Note that weather, the time of day, surroundings, and other factors all can affect reception.

Note

To cancel an ongoing signal receive operation, press any button.

When reception is successful

•“GET” appears when reception is complete, and the

Receive successful		watch adjusts its current time setting.
		• To return to the Timekeeping Mode after “GET” appears,
		press B or C, or do not perform any operation for one
		or two minutes.
		• The receive successful indicator is displayed after a
		successful receive operation.
Receive	successful indicator

2