Casio 3361 Reference, Daylight Saving Time (DST), Analog Timekeeping, Power Saving Function, Auto Return Features, Scrolling, Initial Screens

Operation Guide 3360 3361

Daylight Saving Time (DST)

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

The time calibration signals transmitted from Rugby and Mainflingen include 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 received time signal.

•The default DST setting is Auto DST (AvtA) 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.In the Timekeeping Mode, hold down Auntil the city code starts to flash in the bottom dial, which indicates the setting screen.

2.Press C once and the DST setting screen will appear in the bottom dial.

3.Use D to cycle through the DST settings in the sequence shown below.

Auto DST (AvtA) DST off (OFF) DST on (ON)

4. When the setting you want is selected, press Ato exit the setting screen.

• The DST indicator ( ) appears on the bottom dial to indicate that Daylight Saving Time is turned on.

Analog Timekeeping

The analog time of this watch is synchronized with the digital time. The analog time setting is adjusted automatically whenever you change the digital time.

Note

•The hands for the analog timepiece move to adjust to a new setting whenever any of the following occurs.

When you change the digital time setting manually

When the digital time setting is changed by time calibration signal reception When you change the Home City code and/or DST setting

•If the analog time does not match the digital time for any reason, use the procedure described under “To adjust the analog time” to match the analog setting to the digital setting.

•Whenever you need to adjust both the digital and the analog time settings manually, make sure you adjust the digital setting first.

•Depending on how much the hands have to move in order to adjust to the digital time, it may take some time before they stop moving.

To adjust the analog time
	Mode indicator 1. In the Timekeeping Mode, press Cfive times to enter
				the Hand Setting Mode.
				2. Hold down Auntil the current digital time starts to flash
				in the bottom dial, which indicates the setting screen.
				3. Use D and Bto adjust the analog setting as
			l	described below.
l	l			l
				l
l				l
l
		l l		l
When you want to do this:					Perform this button operation:
Move the hand setting					• Press D.
forward 20 seconds
Move the hand setting a short					• Hold down D.
way forward at high speed					• Release Dwhen the hands reach the setting
					you want.
Move the hand setting a					• While holding down Dto move the hands at
long way forward at high					high speed, press Bto lock the high-speed
speed					hand movement.
					• To stop the hand movement, press any
					button.
					• Hand movement stops automatically if the hour
					hand makes one full (12-hour) revolution.

4. Press A to exit the setting screen.

•The minute hand will be adjusted slightly to match the seconds when you exit the setting screen.

•To return to the Timekeeping Mode, press C.

Reference

This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.

Power Saving Function

When turned on, the Power Saving function automatically puts the watch into a sleep state whenever it is left for a certain period in an area where it is dark. The table below shows how watch functions are affected by Power Saving.

Power saving indicator

Elapsed Time in Dark	Functions
60 to 70 minutes	• LCD off
	• Alarm, hourly time signal, analog timekeeping and
	auto receive enabled
6 or 7 days	• LCD off, alarm and hourly time signal disabled

•Analog timekeeping stopped at 12 o’clock

•Auto receive disabled

•Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.

•The watch will not enter the sleep state between 6:00 AM and 10:59 PM. If the watch is already in the sleep state when 6:00 AM arrives, however, it will remain in the sleep state.

To recover from the sleep state

Perform any one of the following operations.

•Move the watch to a well-lit area.

•Press any button.

•Angle the watch towards your face for reading.

To turn Power Saving on and off
			l	ll			1. In the Timekeeping Mode, hold down Auntil the city
	l						code starts to flash in the bottom dial, which indicates
ll						l	the setting screen.
	l		l	l		l
							2. Press C nine times until the Power Saving on/off
	l l l						screen appears.
l							3. Press D to toggle Power Saving on (ON) and off
				l
l					l		(OFF).
l	l	l l
							4. Press A to exit the setting screen.
							• The Power Saving indicator (	) remains on the top
On/Off status
							dial in all modes while Power Saving is turned on.

Auto Return Features

•If you leave the watch in the Alarm or Hand Setting Mode for two or three minutes without performing any operation, it automatically returns to the Timekeeping Mode.

•If you leave the watch with a flashing setting in a dial for two or three minutes without performing any operation, the watch automatically exits the setting screen.

Scrolling

The Band D buttons are used in various modes and setting screens to scroll through data. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed.

Initial Screens

When you enter the World Time or Alarm Mode, the data you were viewing when you last exited the mode appears first.

Radio-controlled Timekeeping Precautions

•Strong electrostatic charge can result in the wrong time being set.

•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.

•The time calibration signal bounces off the ionosphere. Because of this, such factors as changes in the reflectivity of the ionosphere, as well as movement of the ionosphere to higher altitudes due to seasonal atmospheric changes or the time of day may change the reception range of the signal and make reception temporarily impossible.

•Even if the time calibration signal is received properly, certain conditions can cause the time setting to be off by up to one second.

•The current time setting in accordance with the time calibration signal takes priority over any time settings you make manually.

•The watch is designed to automatically update the date and day of the week for the period January 1, 2000 to December 31, 2099. Setting of the date by the time calibration signal cannot be performed starting from January 1, 2100.

•This watch can receive signals that differentiate between leap years and non-leap years.

•Though this watch is designed to receive both time data (hour, minutes, seconds) and date data (year, month, day), certain signal conditions can limit reception to time data only.

•Normally, the signal reception date shown by the last signal screen is the date data included in the received time calibration signal. When only time data is received, however, the last signal screen shows the date as kept in the Timekeeping Mode at the time of signal reception.

•If you are in an area where proper time calibration signal reception is impossible, the watch keeps time within ±15 seconds a month at normal temperature.

•If you have problems with proper time calibration signal reception or if the time setting is wrong after signal reception, check your current city code, DST (summer time), and auto receive settings. The following are the initial factory defaults for these settings.

Setting	Initial Factory Default
City code	BER (Berlin) (Module 3360)	LON (London) (Module 3361)
DST (summer time)	(Auto switching)
Auto receive	(Auto receive)

Transmitters

This watch is designed to receive the time calibration signal transmitted from Rugby, England and the signal from Mainflingen, Germany. You can select either one of the transmitters, or you can configure the watch to automatically select the transmitter that has the strongest signal.

•The following explains how the watch determines which transmitter it should check first while the watch is configured for auto transmitter search (AvtA).

Module 3360

In this case:	The watch does this:
The first signal auto search operation	1. Checks the Mainflingen signal first.
after factory default settings are in effect,	2. If the Mainflingen signal cannot be
or after the city code has been changed	received, checks the Rugby signal.
Any case other than the above.	1. Checks the last successfully received
	signal first.
	2. If the last successfully received signal
	cannot be received, checks the other
	signal.
Module 3361
In this case:	The watch does this:
The first signal auto search operation	1. Checks the Rugby signal first.
after factory default settings are in effect,	2. If the Rugby signal cannot be received,
or after the city code has been changed	checks the Mainflingen signal.
Any case other than the above.	1. Checks the last successfully received
	signal first.
	2. If the last successfully received signal
	cannot be received, checks the other
	signal.

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