Casio 5022 Reference, City Code Table, Charging Guide, Auto Return Features, High-SpeedMovement, Radio-controlledAtomic Timekeeping Precautions, Timekeeping, Power Saving

Operation Guide 5022

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)	8 minutes
Sunlight through a window (10,000 lux)	30 minutes
Daylight through a window on a cloudy day	48 minutes
(5,000 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

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

•10 seconds of alarm operation per day

•6 minutes of signal 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		20 hours
Sunlight through a window	2 hours		73 hours
(10,000 lux)
Daylight through a window on	4 hours		– – –
a cloudy day (5,000 lux)
Indoor fluorescent lighting	34 hours		– – –
(500 lux)

•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 Alarm Mode or 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.

High-Speed Movement

•The D and Bbuttons are used to change the hand setting in various setting modes. In most cases, holding down these buttons will start high-speed movement of the applicable hand(s) and day.

•High-speed movement of hands and day will continue until you press any button, or until the moving hand(s) and day finishes one complete cycle.

-One complete cycle for the hands is one revolution (360 degrees) of the hour hand, or 24 hours.

-One complete cycle for the day is 31 days.

•High-speed hand movement also is triggered by changing from one mode to another, changing a World Time Mode setting (changing the World Time city in the World Time Mode, swapping the World Time city and Home Time city), etc.

•All buttons (except for the Cbutton for changing modes) are disabled during a high- speed hand or date operation.You will be able to perform button operations again after high-speed operation is stopped.

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 will not 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.

•If you are in an area where proper time calibration signal reception is impossible, the watch keeps time within ±20 seconds a month at normal temperature.

Timekeeping

•The year can be set in the range of 2000 to 2099.

•The watch’s built-in full automatic calendar makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch’s battery replaced or when battery power drops to Level 3.

•The date will change automatically when the current time reaches midnight. The date change at the end of the month may take more time than normal.

•The current time for all city codes in the Timekeeping Mode is calculated in accordance with the Greenwich Mean Time (GMT) differential of each city, based on your Home City time setting.

•GMT differential is calculated by this watch based on Coordinated Universal Time (UTC*) data.

*UTC is the world-wide scientific standard of timekeeping. It is based upon carefully maintained atomic (cesium) clocks that keep time accurately to within microseconds. Leap seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s rotation. The reference point for UTC is Greenwich, England.

Power Saving

Power Saving enters a sleep state automatically whenever the watch 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.

•There actually are two sleep state levels: “second hand sleep” and “function sleep”.

Elapsed Time in Dark	Operation
60 to 70 minutes	Second hand only is stopped, all other functions are
(second hand sleep)	enabled.
6 or 7 days	• All functions, including analog timekeeping, disabled
(function sleep)	• Internal timekeeping maintained

•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 9:59 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.

City Code Table

City	City	GMT	Other major cities in same time zone
Code		Differential
PPG	Pago Pago	–11.0
HNL	Honolulu	–10.0	Papeete
ANC	Anchorage	–09.0	Nome
LAX	Los Angeles	–08.0	San Francisco, Las Vegas, Vancouver,
			Seattle/Tacoma, Dawson City, Tijuana
DEN	Denver	–07.0	El Paso, Edmonton, Culiacan
CHI	Chicago	–06.0	Houston, Dallas/Fort Worth,
			New Orleans, Mexico City, Winnipeg
NYC	New York	–05.0	Montreal, Detroit, Miami, Boston,
			Panama City, Havana, Lima, Bogota
CCS*	Caracas	–04.0	La Paz, Santiago, Port Of Spain
RIO	Rio De Janeiro	–03.0	Sao Paulo, Buenos Aires, Brasilia, Montevideo
– 02		–02.0
– 01		–01.0	Praia
GMT		+00.0	Dublin, Lisbon, Casablanca, Dakar, Abidjan
LON	London
PAR	Paris	+01.0	Milan, Rome, Madrid, Amsterdam, Algiers, Hamburg,
			Frankfurt, Vienna, Stockholm, Berlin
ATH	Athens	+02.0	Cairo, Jerusalem, Helsinki, Istanbul, Beirut, Damascus,
			Cape Town
JED	Jeddah	+03.0	Kuwait, Riyadh, Aden, Addis Ababa, Nairobi, Moscow
THR	Tehran	+03.5	Shiraz
DXB	Dubai	+04.0	Abu Dhabi, Muscat
KBL	Kabul	+04.5
KHI	Karachi	+05.0	Male
DEL	Delhi	+05.5	Mumbai, Kolkata, Colombo
DAC	Dhaka	+06.0
RGN	Yangon	+06.5
BKK	Bangkok	+07.0	Jakarta, Phnom Penh, Hanoi, Vientiane
BJS	Beijing	+08.0	Singapore, Kuala Lumpur, Hong Kong, Taipei, Manila,
			Perth, Ulaanbaatar
TYO	Tokyo	+09.0	Seoul, Pyongyang
ADL	Adelaide	+09.5	Darwin
SYD	Sydney	+10.0	Melbourne, Guam, Rabaul
NOU	Noumea	+11.0	Port Vila
WLG	Wellington	+12.0	Christchurch, Nadi, Nauru Island

•Based on data as of June 2007.

•The rules governing global times (GMT differential and UTC offset) and summer

time are determined by each individual country.

*In December 2007, Venezuela changed its offset from –4.0 to –4.5. Note however, that this watch displays an offset of –4.0 (the old offset) for the CCS (Caracas, Venezuela) city code.

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