MA0905-EA

Operation Guide 5073

Congratulations upon your selection of this CASIO watch.

Power Levels

This watch does not have a city code that corresponds to the UTC offset of –3.5 hours. Because of this, the radio-controlled atomic timekeeping function will not display the correct time for Newfoundland, Canada.

Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss suffered by you or any third party arising through the use of this product or its malfunction.

You can get an idea of the watch’s power level by observing the movement of the x Second Hand.

••If the x Second Hand is moving normally at one-second intervals, power is at Level 1.

••If the x Second Hand is moving at two-second intervals, power is at Level 2, which is quite low. Expose the watch to light as soon as possible so it can charge.

About This Manual

Button operations are indicated using the letters A through Dshown in the illustration.

Hand Functions

Regular timekeeping

z Hour Hand

x Second Hand

c Minute Hand

v Day of the Week Hand

b Day

World Time

nWorld Time Hour Hand: Indicates the current time in the World Time City in 24-hour format.

mWorld Time Minute Hand

This User’s Guide uses numbers shown above to identify watch hands and indicators.

Things to check before using the watch

1.Hold down Cfor about two seconds to enter regular timekeeping, and then observe the movement of the x Second Hand.

Is the x Second Hand moving smoothly at one-second intervals?

 

NO

YES

 

Is the x Second Hand moving at

The watch is charged sufficiently.

 

two-second intervals or is it stopped

For details about charging, see

 

completely?

“Charging the Watch”.

 

YES

NEXT

 

Power is low. Charge the watch by placing

 

Go to step 2.

 

it in a location where it is exposed to light.

 

 

 

 

 

 

 

 

For details, see “Charging the Watch”.

 

 

 

 

 

 

2. Check the Home City and the daylight saving time (DST) setting.

Use the procedure under “To configure Home City settings” to configure your Home City and daylight saving time settings.

Important!

Proper time calibration signal reception and World Time settings depend on correct Home City, Home Time, and Home Date settings. Make sure you configure these settings correctly.

3. Set the current time.

••To set the time using a time calibration signal See “To get ready for a receive operation”.

••To set the time manually

See “Configuring Current Time and Date Settings Manually”.

The watch is now ready for use.

For details about the watch’s radio controlled timekeeping feature, see “Radio Controlled Atomic Timekeeping”.

Charging the Watch

The face of the watch is a solar cell that generates power from light. The generated power charges a built-in rechargeable battery, which powers watch operations. The watch charges whenever it is exposed to light.

Moves at two-second intervals.

Level

Hand Movement

Function Status

1

Normal

All functions enabled

2

x Second Hand moves at two-second

Time calibration signal reception

intervals.

disabled

 

b Day changes to 1 (home position).

 

 

3

x Second Hand stopped.

All functions disabled

z Hour Hand and c Minute Hand stopped

 

at 12 o’clock.

 

••When power drops to Level 3, all functions will be disabled but the watch will continue to keep time internally for about one week. If you recharge the battery sufficiently during this period, the analog hands will move automatically to the correct setting and regular timekeeping will resume. After one week, all settings (including timekeeping) will be cleared. Recharging the battery will reset all settings to their initial factory defaults.

Charging Times

 

Daily

 

 

Level Change *2

Exposure Level (Brightness)

Operation

 

Level 3

 

Level 2

Level 1

 

*1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor sunlight (50,000 lux)

8 min.

 

2 hours

24 hours

Window sunlight (10,000 lux)

30 min.

 

6 hours

89 hours

 

 

 

 

 

 

 

 

 

Window sunlight on cloudy day

48 min.

 

9 hours

145 hours

(5,000 lux)

 

 

 

 

 

 

 

 

 

Indoor fluorescent lighting (500 lux)

8 hours

 

98 hours

– – –

 

 

 

 

 

 

 

 

 

**1 Approximate exposure each day to generate power for normal daily operation **2 Approximate exposure to take power up one level

••The above times are for reference only. Actual times depend on lighting conditions.

••For details about the operating time and daily operating conditions, see the “Power Supply” section of the Specifications.

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

x Second Hand only stopped at 12 o’clock, all other

(second hand sleep)

functions enabled

6 or 7 days (function sleep)

••All functions, including analog timekeeping, disabled

••Internal timekeeping maintained

 

••The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch is already in a sleep state when 6:00 AM arrives, however, it will remain in the sleep state.

To recover from the sleep state

Move the watch to a well-lit area or press any button.

Radio Controlled Atomic Timekeeping

This watch receives a time calibration signal and updates its time setting accordingly. However, when using the watch outside of areas covered by time calibration signals, you will have to adjust the settings manually as required. See “Configuring Current Time and Date Settings Manually” for more information.

This section explains how the watch updates its time settings when the city code

Charging Guide

Whenever you are not wearing the watch, leave it in a location where it is exposed to light.

••Best charging performance is achieved by exposing the watch to light that is as strong as possible.

Warning!

When wearing the watch, make sure that its face is not blocked from light by the sleeve of your clothing.

••The watch may enter a sleep state if its face is blocked by your sleeve even only partially.

selected as the Home City is in Japan, North America, Europe, or China, and is one that supports time calibration signal reception.

If your Home City Code setting

The watch can receive the signal from the

is this:

transmitter located here:

LON, PAR, ATH

Anthorn (England), Mainflingen (Germany)

HKG

Shangqiu City (China)

 

 

TYO

Fukushima (Japan), Fukuoka/Saga (Japan)

 

 

HNL, ANC, LAX, DEN, CHI, NYC

Fort Collins, Colorado (United States)

Important!

••The areas covered by HNL and ANC are quite far from the calibration signal transmitters, so certain conditions may cause reception problems.

Leaving the watch in bright light for charging 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

Important!

••Keep the watch in an area normally exposed to bright light when storing it for long periods. This helps to ensure that power does not run down.

••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 power to run down. Make sure that the watch is exposed to bright light whenever possible.

••When HNL or HKG is selected as the Home City, only the time and date are adjusted according to the time calibration signal. You need to switch manually between standard time and daylight saving time (DST) if required. See “To toggle the Home City time between standard time and daylight saving time” for information about how to do this.

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