Casio 2578 Owner's Manual

World Time Mode

MO0212-A

USER’S GUIDE 2578

About This Manual

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

•In the Timekeeping Mode, use C (forward) and A(back) to scroll through the mode names in the text area of the display. When the text area shows the mode you

want, press Bto enter the mode.

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

Timekeeping Mode

Press C.

▲

▲

▲

Press A.

	Time Setting Mode
▲	▲
			▲

Text area

Radio-controlled Timekeeping

PM				DST indicator
indicator
			Month – Day

Day of week

Hour : Minutes Seconds

To set your Home City

Text area

City code

This watch is designed to pick up a time calibration signal transmitted from Mainflingen, Germany (located 25 kilometers southeast of Frankfurt), and update its time setting accordingly. The time calibration signal includes both Standard Time and Daylight Saving Time (summer time) data.

Current Time Setting

This watch automatically adjusts its 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.

•See “Setting the Time and Date Manually” for information about manual settings.

1.From the Timekeeping Mode, use C and Ato display SET (Time Setting Mode) in the text area.

2.Press B to enter the Time Setting Mode.

3.Press B so the current city code is flashing in the text area.

4.Use C(+) and A(–) to scroll through the city codes in the text area until the one you want to use as your Home City is displayed.

•The following are the city codes for major cities in the Western Europe time zones.

BER and PAR: Berlin, Paris, Milan, Rome,

Amsterdam, Hamburg,

Frankfurt, Vienna

LON: London

5.Press B nine times, until the text area shows the Time Setting Mode indicator (SET).

6.Press C to return to the Timekeeping Mode.

•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 three times a day at 2:00 AM, 4:00 AM, and 6:00 AM. 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!

•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	Metal Band
	Band

Alarm Mode

Date Alert Mode

▲

▲

▲

▲

Stopwatch Mode

Time Recorder Mode

▲

▲

▲

▲

•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
			noise

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

• 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.

	• This watch is able to receive the time calibration signal
	transmitted from Mainflingen, Germany (located 25
	kilometers southeast of Frankfurt). 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, the
	signal may become weak and reception may be
	impossible under certain conditions.
	• Signal reception may be poor in the shaded area on the
	map, even though it is within 1,000 kilometers of the
	signal transmitter.
	• See the information under “Signal Receive
Frankfurt	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 2:00 AM, 4:00 AM, and 6:00 AM each day (calibration times).

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 making 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 time in the Timekeeping Mode reaches each of the three calibration times. Do not perform any button operation within six minutes before or after any of the three 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 is performed whenever the display shows one of the three calibration times, regardless of whether or not the Timekeeping Mode time is actually the correct time.

•When two or three 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 Receive Indicator

The receive 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.

Receive indicator

Weak Strong

1

Text area On/off status

Receive indicator

USER’S GUIDE 2578

•Even in an area where signal strength is strong, it takes about 10 seconds for signal reception to stabilize enough for the receive indicator to indicate signal strength.

•Use the receive indicator as a guide for checking signal strength and for finding the best location for the watch during signal receive operations.

•The receive indicator remains on the display in all modes following reception of the time calibration signal and calibration of the watch’s time setting. The receive indicator does not appear if signal reception was unsuccessful or after manual adjustment of the current time setting.

•The receive indicator appears 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 receive indicator indicates that at least one of the three calibration signal receive operations was successful. Note, however, that the receive indicator is cleared from the display at 3:00 AM each day.

To perform manual receive

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

•Note that signal reception is poor if the watch is on its back or side.

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

seconds until the watch beeps.

3. Release B and the message RC! appears in the text area to indicate that 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 B.

•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 B.

To turn auto receive on and off

1. From the Timekeeping Mode, use C and Ato display SET (Time Setting Mode) in the text area.

2. Press Bto enter the Time Setting Mode.

3. Press Aor Cto toggle auto receive on (ON) and off

(OF).

• If the current Home City setting is a city code that

does not support auto receive, “xx” appears in place of the on/off indicator. This means you cannot turn

auto receive on or off.

4. Press B10 times, until the text area shows the Time

Setting Mode indicator (SET).

5. Press Cto return to the Timekeeping Mode.

To display the Last Signal screen

In the Timekeeping Mode, press B to display the Last Signal screen (GET). The Last Signal screen shows the date and time that the time calibration signal was last received.

Home city time Receive time

	Press B.	Alternate at two-
▲	▲	second interval

Receive date

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.
				Select BER, PAR, LON, or
		following city codes:		ATH as your Home City.
		BER, PAR, LON, or ATH.
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 receive		or World Time Mode, or you were		signal receive operation is
indicator does		performing some button operation	•	performed.
not appear on	•	during the auto receive operation.		Check to make sure the watch
the display.		Even if receive is successful, the receive		is in a location where it can
		indicator disappears every day at 3 am.		receive the signal.
	•	Time data (hour, minutes, seconds) only
		was received during the last receive
		operation. The receive 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 “Time Calibration Signal Reception” and “Time Calibration Signal Reception Precautions.”

Timekeeping

PM indicator DST indicator								Use the Timekeeping Mode to set and view the current
			Month — Day					time and date.
								Setting the Time and Date Manually
								Make sure you select your Home City code before you
								change the current time and date settings. World Time
								Mode times are all displayed in accordance with the
								Timekeeping Mode settings. Because of this, World Time
								Mode times will not be correct if you do not select the
								proper Home City code before setting the time and date in
								the Timekeeping Mode.
			Day of week
	Hour: Minutes Seconds

To set the current time and date manually

1. From the Timekeeping Mode, use C and Ato display SET (Time Setting Mode) in the text area.

2. Press Bto enter the Time Setting Mode.

3. Press Bto cycle through the setting screens in the sequence shown below.

Text area

Auto Receive

City Code

DST Screen

12/24-hour Format

Screen (R/C)

Screen

(DST)

(12H/24H)

Mode Indicator

Day

Month

Year

Minutes

Hour

Seconds

(SET)

Time setting

4.Use the operations shown below to configure auto receive, city code, DST, and 12/24-hour format settings.

Text area	To do this:	Do this:
indicator:
R/C	Toggle between auto receive on	Press Aor C.
	(ON) and off (OF)
BER	Change the city code	Use C(+) and A(–).
DST	Toggle between Daylight Saving	Press Aor C.
	Time (ON) and Standard Time (OF)	• Pressing Aor C performs
		a different operation when
		BER, PAR, LON, or ATH is
		selected as Home City code.
		See “To change the Daylight
		Saving Time (summer time)
		setting.”
12H	Toggle between 12-hour (12H) and	Press Aor C.
	24-hour (24H) timekeeping

5.Press Bwhile 12H/ 24H is shown in the text area to advance to the time setting screen, which is indicated by the seconds flashing.

6.Use the operations shown below to configure time and date settings.

Screen:	To do this:	Do this:
50	Reset the seconds to 00	Press Aor C.
P10	Change the hour	Use C(+) and A (–).
58	Change the minutes
'02	Change the year
6	Change the month
30	Change the day

7. To return to the Timekeeping Mode, use B to scroll to the mode indicator (SET), and then press C.

•See “City Code Table” for a complete list of available city codes.

•The auto receive setting is used for time calibration signal reception only. See “About Auto Receive” for details.

Daylight Saving Time (DST)

Daylight Saving Time (summer time) advances the time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time.

The time calibration signal transmitted from Mainflingen includes both Standard Time and DST data. When the Auto DST setting is turned on, the watch switches between Standard Time and DST (summer time) automatically in accordance with the Mainflingen signal.

•The default DST setting is Auto DST (A) whenever you select BER, PAR, LON, or ATH as your Home City code.

•If you experience problems receiving the time calibration signal in your area, it is probably best to switch between Standard Time and Daylight Saving Time (summer time) manually.

To change the Daylight Saving Time (summer time) setting

1.From the Timekeeping Mode, use Cand Ato display SET (Time Setting Mode) in the text area.

2.Press Bto enter the Time Setting Mode.

3.Press Btwice so DST is in the text area. This is the DST setting screen.

4.Use C or A to cycle through the DST settings in the sequence shown below.

Auto DST( )			DST Off( )			DST On(	)

5.When the setting you want is displayed, press B eight times, until the text area shows the Time Setting Mode indicator (SET).

6.Press Cto return to the Timekeeping Mode.

2