Casio 5008 Operation Manual Download Page 5

Operation Guide 5008

5

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)

Outdoor sunlight (50,000 lux)

Sunlight through a window (10,000 lux)

Daylight through a window on a cloudy day
(5,000 lux)

Indoor fluorescent lighting (500 lux)

Approximate Exposure Time

8 minutes

30 minutes

48 minutes

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.

20 hours

73 hours

– – –

– – –

Outdoor sunlight (50,000 lux)

Sunlight through a window
(10,000 lux)

Daylight through a window on
a cloudy day (5,000 lux)

Indoor fluorescent lighting
(500 lux)

Approximate Exposure Time

Level 3

Level 2

Level 1

1 hour

2 hours

4 hours

34 hours

Exposure Level
(Brightness)

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 

B

 buttons 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 city, etc.

All buttons (except for the 

C

 button 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”.

Operation

Second hand only is stopped, all other functions are
enabled.

 All functions, including analog timekeeping, disabled

 Internal timekeeping maintained

Elapsed Time in Dark

60 to 70 minutes
(second hand sleep)

6 or 7 days
(function sleep)

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.

Pago Pago

Honolulu

Anchorage

Los Angeles

Denver

Chicago

New York

Caracas

Rio De Janeiro

London

Paris

City

City

GMT

Other major cities in same time zone

Code

Differential

City Code Table

PPG
HNL
ANC

LAX

DEN

CHI

NYC

CCS*

RIO

– 02
– 01

GMT

LON

PAR

–11.0
–10.0
–09.0

–08.0

–07.0

–06.0

–05.0

–04.0
–03.0
–02.0
–01.0

+00.0

+01.0

Papeete
Nome
San Francisco, Las Vegas, Vancouver,
Seattle/Tacoma, Dawson City, Tijuana
El Paso, Edmonton, Culiacan
Houston, Dallas/Fort Worth,
New Orleans, Mexico City, Winnipeg
Montreal, Detroit, Miami, Boston,
Panama City, Havana, Lima, Bogota
La Paz, Santiago, Port Of Spain
Sao Paulo, Buenos Aires, Brasilia, Montevideo

Praia
Dublin, Lisbon, Casablanca, Dakar, Abidjan

Milan, Rome, Madrid, Amsterdam, Algiers, Hamburg,
Frankfurt, Vienna, Stockholm, Berlin

Athens

Jeddah

Tehran

Dubai
Kabul

Karachi

Delhi

Dhaka

Yangon

Bangkok

Beijing

Tokyo

Adelaide

Sydney

Noumea

Wellington

+02.0

+03.0
+03.5
+04.0
+04.5
+05.0
+05.5
+06.0
+06.5
+07.0

+08.0

+09.0
+09.5
+10.0
+11.0
+12.0

Cairo, Jerusalem, Helsinki, Istanbul, Beirut, Damascus,
Cape Town
Kuwait, Riyadh, Aden, Addis Ababa, Nairobi, Moscow
Shiraz
Abu Dhabi, Muscat

Male
Mumbai, Kolkata, Colombo

Jakarta, Phnom Penh, Hanoi, Vientiane
Singapore, Kuala Lumpur, Hong Kong, Taipei, Manila,
Perth, Ulaanbaatar
Seoul, Pyongyang
Darwin
Melbourne, Guam, Rabaul
Port Vila
Christchurch, Nadi, Nauru Island

ATH

JED

THR
DXB

KBL

KHI

DEL
DAC

RGN

BKK

BJS

TYO
ADL
SYD

NOU
WLG

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.

Summary of Contents for 5008

Page 1: ...llins Japan Fukushima or Fukuoka Saga See the information under Signal Reception Troubleshooting if you experience problems with time calibration signal reception Current Time Setting This watch adjusts its time setting automatically in accordance with a time calibration signal You also can perform a manual procedure to set the time and date when necessary The first thing you should do after purch...

Page 2: ... am 5 00 am Midnight 2 00 am 2 00 am 4 4 00 am 5 00 am 5 00 am Midnight Midnight 1 00 am 3 00 am 3 00 am 5 5 00 am Midnight Midnight 1 00 am 1 00 am 2 00 am 4 00 am 4 00 am 6 Midnight 1 00 am 1 00 am 2 00 am 2 00 am 3 00 am 5 00 am 5 00 am Next day Note 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 R...

Page 3: ...untdown operation completely first pause it by pressing B and then press D This will return the countdown time to its starting value You will not be able to switch to another mode while a countdown is in progress World Time The World Time Mode shows you the current time in 27 cities 29 time zones around the world A simple operation swaps your Home City with the currently selected World Time city W...

Page 4: ...g in one year units 00 10 20 30 40 50 60 70 80 90 Setting the year 10 year units Stopwatch second hand Setting the year 1 year units 0 1 2 3 4 5 6 7 8 9 30 Date Setting the date 8 After the year setting is the way you want press C This will cause the watch to beep and change to the month setting mode 9 Use D to move the stopwatch second hand to the month setting you want 10 After the month setting...

Page 5: ...te 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 th...

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