Casio 4383 Timekeeping, Power Supply, Reference, Battery Power Levels, Charging Precautions, Charging Guide, Auto Return Features, Scrolling

Operation Guide 4383

Timekeeping

Minute hand

Hour hand

30

Date

Second hand

Use the Timekeeping Mode to set and view the current time and date. This section also explains how to set the current date and time manually.

•If you become confused and lose your way during the following procedures, simply put the watch down and do not perform any button operation for two or three minutes. This will cause the watch to enter the Timekeeping Mode (indicated by normal one-second movement of the second hand) automatically. After that, you can try performing the manual setting procedure again from the beginning.

•All of the operations in this section are performed in the Timekeeping Mode, which you enter by pressing B.

Battery Power Levels

The movement of the analog hands indicates the current battery power level.

Level	Hand Movement	Function Status
1	Normal.	All functions enabled.
2	•Second hand jumps	All functions disabled,
	every 2 seconds.	except for analog
30	•Date changes to home	timekeeping.
	position at midnight.
3	•Second hand stopped.	All functions disabled.
	•Hour and minute hands
Jumps 2 seconds	stopped at 12 o’clock.

To set the time and date manually
		1. In the Timekeeping Mode, hold down Afor about five
			seconds.
			• This will cause the second hand to move to 5 o’clock, 6
			o’clock, 7 o’clock, or 8 o’clock, depending on the currently
	30		selected GMT differential setting. This is the setting mode.
			• The GMT differential value indicates the time difference in
GMT	GMT differential hours between Greenwich Mean Time and the currently
	value (–05)		selected time zone.
differential GMT differential			• The hour and minute hands do not move in the setting mode.
value	value (–06)	2. Press A to cycle through settings in the sequence shown
(–08)
	GMT differential		below.
	value (–07)
	Hold down .			Press .
	Timekeeping		GMT Differential			Hour/Minutes		Hour/Minutes
	Mode		Value			(Forward)		(Back)
	Year	Year			Month		Day		Seconds
	(1’s Digit)	(10’s Digit)

3.Select the setting you want to change, and then use B to change it as shown below.

To do this:	While the second hand is here:	Do this:
Change the time zone	5 o’clock (GMT –05), 6 o’clock	Use B(+).
	(GMT –06), 7 o’clock (GMT –07),
	or 8 o’clock (GMT –08)
Move the hour and minute hands	AM or PM	Use B(+).
clockwise one minute
Move the hour and minute hands	AM or PM	Use B(–).
counterclockwise one minute
Reset the seconds to 00	SEC	Press B.

•Pressing Bwhile the seconds setting is selected will cause the second hand to move to 00 seconds. This also advances the minute by one, resets the seconds count to 00, and exits the setting mode automatically.

•If you want to change the year, month, and day setting after resetting the

seconds, re-enter the setting mode from step 1.

•The second hand jumping every two seconds (Level 2) indicates that battery power is quite low. Expose the watch to light as soon as possible to charge the battery.

•When battery power is at Level 2, time calibration signal reception is disabled.

•At Level 3, all functions are disabled and settings return to their initial factory defaults. The analog hands will move to the current time and normal timekeeping will resume when the battery is recharged sufficiently.

Charging Precautions

Certain charging conditions can cause the watch to become very hot. Avoid leaving the watch in the areas described below whenever charging its rechargeable battery.

Warning!

Leaving the watch in bright light to charge its rechargeable battery can cause it to become quite hot. Take care when handling the watch to avoid burn injury. The watch can become particularly hot when exposed to the following conditions for long periods.

•On the dashboard of a car parked in direct sunlight

•Too close to an incandescent lamp

•Under direct sunlight

Charging Guide

After a full charge, timekeeping remains enabled for up to about five months.

•The following table shows the amount of time the watch needs to be exposed to light each day in order to generate enough power for normal daily operations.

Exposure Level (Brightness)	Approximate Exposure Time
Outdoor sunlight (50,000 lux)	6 minutes
Sunlight through a window (10,000 lux)	30 minutes
Daylight through a window on a cloudy day (5,000	48 minutes
lux)
Indoor fluorescent lighting (500 lux)	8 hours

• Since these are the specs, we can include all the technical details.

• Watch is not exposed to light

• Internal timekeeping

Dec

NovJan

Oct Feb

Sep Mar

	30
Aug	Apr

JulMay

Jun

Setting the Month

0

1

2

9 3

	30
8	4

75

6

Setting the Year

To do this:	While the second hand is here:	Do this:
Change the day	12 o’clock	Use B(+).
Change the month	Current month
Change the year	10’s digit of current year
	1’s digit of current year

•When setting the day, the watch automatically will skip days (30 and 31) that are not included in the currently selected month. If you can’t select 30 or 31 when you want to, check to make sure that the proper month is selected.

4.After setting the 1’s digit of the year, press Ato exit the setting mode.

•This will cause the hands to move to the current time, and resume normal movement.

•Make sure that you set the time correctly as AM or PM (as indicated by the second hand) when setting the time. The second hand will move between AM and PM any time the hour hand moves past 12 o’clock while you are setting the time.

• Analog hands operational 18 hours per day, sleep state 6 hours per day

• 1 time calibration reception per day

• Stable operation is promoted by frequent charging.

Recovery Times

The table below shows the amount exposure that is required to take the battery from one level to the next.

Exposure Level	Approximate Exposure Time
(Brightness)
	Level 3	Level 2	Level 1
	▲	▲	▲
Outdoor sunlight (50,000 lux)	1 hour		16 hours
Sunlight through a window	3 hours		78 hours
(10,000 lux)
Daylight through a window on	4 hours		– – –
a cloudy day (5,000 lux)
Indoor fluorescent lighting	37 hours		– – –
(500 lux)

Power Supply

This watch is equipped with a solar cell and a special rechargeable battery (secondary battery) that is charged by the electrical power produced by the solar cell. The illustration shown below shows how you should position the watch for charging.

Example: Orient the watch so its face is	Solar cell
pointing at a light source.
• The illustration shows how to position
a watch with a resin band.
• Note that charging efficiency drops	30
when any part of the solar cell is
blocked by clothing, etc.

•You should try to keep the watch outside of your sleeve as much as possible. Even if the face of the watch is blocked from light only partially, charging will be reduced significantly.

Important!

•Storing the watch for long periods in an area where there is no light or wearing it in such a way that it is blocked from exposure to light can cause rechargeable battery power to run down. Make sure that the watch is exposed to bright light whenever possible.

•This watch uses a special rechargeable battery to store power produced by the solar cell, so regular battery replacement is not required. However, after very long use, the rechargeable battery may lose its ability to achieve a full charge. If you experience problems getting the special rechargeable battery to charge fully, contact your dealer or CASIO distributor about having it replaced.

•Never try to remove or replace the watch’s special battery yourself. Use of the wrong type of battery can damage the watch.

•The current time and all other settings return to their initial factory defaults whenever battery power drops to Level 3 and when you have the battery replaced.

•Keep the watch in an area normally exposed to bright light when storing it for long periods. This helps to keep the rechargeable battery from going dead.

•The above exposure time values are all for reference only. Actual required exposure times depend on lighting conditions.

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.

Auto Return Features

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

•If you do not perform any operation for about two or three minutes while a setting mode is selected, the watch will exit the setting mode automatically.

Scrolling

•The Bbutton is used to change the hand setting in various setting modes. In most cases, holding down the Bbutton will start high-speed movement of the applicable hand(s).

•High-speed movement of the hands will continue until it completes a 12-hour cycle, or until you press any button to stop it.

Radio-controlled Atomic Timekeeping Precautions

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

• 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 update the date and day of the week automatically 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.

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