Casio 5240 User Manual

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Operation Guide 5240

About This Manual

Operations are performed using the watch’s crown, and the three buttons indicated by the letters A, B and C in this manual.

Hands and Indicators

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E-2

To unlock the crown

Rotate the crown so the groove aligns with Mark 1.

To pull out, rotate, or push the crown in

Important!

Before performing any of these operations, ﬁ rst unlock the crown.

The illustrations below show the different crown operations.

Pull out Rotate Push in

When rotating the crown to move the hands of the watch, you can use the operations described below to move the hands at high speed. There are two high-speed hand movement speeds. High-speed 2 is the fastest.

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Hour Hand Second Hand Minute Hand Upper Dial Hand: Indicates a time, in 24-hour format,

Lower Dial Hand: Indicates the current mode. Day Indicator

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

depending on the current mode.

Congratulations upon your selection of this CASIO watch.

Note that the product illustrations in this manual are intended for reference only, and so

the actual product may appear somewhat different than depicted by an illustration.

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.

Using the Crown

This watch has a lock-type crown.

Important!

You should normally have the crown locked during normal daily use. Leaving the crown unlocked creates the risk of unintended operations or even damage due to impact.

To lock the crown

ENGLISH

Mark 1

Groove

Mark 2

High-speed 1 High-speed 2 High-speed Cancel

With the crown pulled out, rotate it rapidly away from you three times.

Note

If you do not perform any operation for more than two minutes after pulling out the crown, crown operations will become disabled automatically. If this happens, push the crown back in and then pull it out again to re-enable crown operations. You can use high-speed hand movement when conﬁ guring time settings in the

Timekeeping Mode, Alarm Mode, or Countdown Timer Mode. High-speed hand movement is forward only. There is no high-speed backward x hand movement.

Push the crown back in (see “To pull out, rotate, or push the 1. crown in” below).

Note that attempting to lock the crown when it is not

pushed in can cause unexpected watch operation.

Rotate the crown so the groove is aligned with Mark 1.2. While pushing in on the crown (a), rotate it to the right (b) so 3.

the groove aligns with Mark 2. Gently pull on the crown to make sure it is securely locked 4.

and does not come out.

After starting the Highspeed 1 operation, rotate the crown rapidly away from you three more times.

Rotate the crown towards you or press any button.

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Things to check before using the watch

1. Hold down C at least two seconds to enter the Timekeeping Mode, and

then observe the movement of the

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

Is the x Second Hand moving at two-second intervals or is it stopped completely?

Power is low. Charge the watch by placing it in a location where it is exposed to light. For details, see “Charging the Watch” (page E-12).

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YES

Second Hand.

The watch is charged. For details about charging, see “Charging the Watch” (page E-12).

Go to step 2.

YES

Contents

E-2 About This Manual

E-3 Using the Crown

E-3 To lock the crown E-4 To unlock the crown E-4 To pull out, rotate, or push the crown in

E-6 Things to check before using the watch

E-12 Charging the Watch

E-17 To recover from the sleep state

E-18 Radio Controlled Atomic Timekeeping

E-23 To get ready for a receive operation E-26 To perform manual receive E-27 To check the result of the latest receive operation E-28 To turn auto receive on and off

E-8

2. Check the Home City.

Use the procedure under “To conﬁ gure Home City settings” (page E-34) to conﬁ gure your Home City.

Important!

Proper time calibration signal reception depends on correct Home City, time, and day settings in the Timekeeping Mode. Make sure you conﬁ gure these settings correctly.

3. Set the current time.

x To set the time using a time calibration signal

See “To get ready for a receive operation” (page E-23).

x To set the time manually

See “Conﬁ guring Current Time and Day Settings Manually” (page E-39).

The watch is now ready for use.

For details about the watch’s radio controlled timekeeping feature, see “Radio x Controlled Atomic Timekeeping” (page E-18).

E-30 Mode Reference Guide

E-31 To determine the watch’s current mode E-31 To return to the Timekeeping Mode from any other mode E-32 To select a mode

E-33 Timekeeping

E-34 Conﬁ guring Home City Settings

E-34 To conﬁ gure Home City settings E-37 To switch between standard time and summer time manually

E-39 Conﬁ guring Current Time and Day Settings Manually

E-39 To change the current time setting manually E-42 To change the current day setting manually

E-46 Thermometer

E-47 To take a temperature reading E-48 To switch a temperature reading unit between Celsius (°C) and

Fahrenheit (°F)

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E-9

Operation Guide 5240

E-52 Temperature Reading Precautions

E-53 Checking the Current Time in a Different Time Zone

E-54 To view the time in another time zone E-57 To swap your Home City and World Time City

E-58 Using the Stopwatch

E-59 To enter and exit the Stopwatch Mode E-59 To perform an elapsed time operation E-59 To perform ﬂ yback timing

E-61 Using the Countdown Timer

E-62 To specify the countdown start time E-63 To perform a countdown timer operation E-63 To stop the alarm

E-64 Using the Alarm

E-65 To change the alarm time setting E-67 To turn the alarm on or off

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Charging the Watch

The face of the watch is a solar panel 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.

Charging Guide

E-12

Low Power

Moves at two-second intervals.

E-14

Whenever you are not wearing the watch, be sure to 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.

Low power conditions are indicated by the movement of the

Second Hand in the Timekeeping Mode.

If the x

Second Hand is moving normally at one-second

intervals, power is at Level 1.

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If the

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.

Low Battery Alert (Hand Movement and Function Status)

Level Hand Movement Function Status

1 Normal. All functions enabled

xx Second Hand moves at

two-second intervals.

xx Second Hand stopped.

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

The watch may enter a

sleep state (page E-17) if its face is blocked by your sleeve even only partially.

Beeper and time calibration signal reception disabled.

All functions disabled

E-67 To stop the alarm

E-68 Adjusting Home Positions

E-70 To adjust home positions

E-72 Troubleshooting

E-82 Speciﬁ cations

E-11

Warning! 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 x Under direct sunlight x

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.

Checking the Current Power Level

Certain functions will be disabled when the power level is low. If the power level is low, leave the watch in a location where its face (solar panel) is exposed to light.

When power drops to Level 3, all settings (including timekeeping) will be cleared. x Recharging the battery will reset all settings to their initial factory defaults. When the watch is at Level 3, exposing it to light for a while will cause the x Hand to move to the position of second 57. This indicates that charging has started.

Power Recovery Mode

The watch is designed to go into a power recovery mode that stops hand operation temporarily whenever power suddenly drops below a certain level due to continuous signal reception or other operations over a short period. Note that all operations are disabled while the watch is in the power recovery mode. The hands will move to the correct positions and the watch will resume normal operation after power recovers (in about 15 minutes). Putting the watch in a location where it is exposed to light will help power to recover sooner.

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Second

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Charging Times

Exposure Level (Brightness)

Outdoor sunlight (50,000 lux) 8 minutes 3 hours 28 hours

Window sunlight (10,000 lux) 30 minutes 7 hours 107 hours

Window sunlight on cloudy day (5,000 lux)

Indoor ﬂ uorescent lighting (500 lux)

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 x Supply” section of the Speciﬁ cations (page E-84).

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Daily

Operation *1

48 minutes 10 hours 173 hours

8 hours 114 hours – – –

Level Change *2

Level 3 Level 2 Level 1

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 “Conﬁ guring Current Time and Day Settings Manually” (page E-39) for more information.

This section explains how the watch updates its time settings when the city code selected as the Home City is in Japan, North America, Europe, or China, and is one that supports time calibration signal reception.

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Power Saving

Power Saving enters a sleep state (second hand sleep or function sleep) whenever the watch is left for a certain period in an area where it is dark.

Elapsed Time in Dark Operation

60 to 70 minutes (second hand sleep)

6 or 7 days (function sleep)

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

The watch will not enter a sleep state while it is in the Stopwatch Mode or Countdown Timer Mode.

To recover from the sleep state

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

If your Home City Code setting is this:

LON (LONDON), PAR (PARIS), ATH (ATHENS)

HKG (HONG KONG) Shangqiu City (China)

TYO (TOKYO)

HNL (HONOLULU), ANC (ANCHORAGE), LAX (LOS ANGELES), DEN (DENVER), CHI (CHICAGO), NYC (NEW YORK)

Important!

x HNL (HONOLULU) and ANC (ANCHORAGE) are quite far

The areas covered by from the calibration signal transmitters, so certain conditions may cause reception problems.

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

enabled

All functions, including analog timekeeping, disabled x Internal timekeeping maintained x

The watch can receive the signal from the transmitter located here:

Anthorn (England), Mainﬂ ingen (Germany)

Fukushima (Japan), Fukuoka/Saga (Japan)

Fort Collins, Colorado (United States)

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Operation Guide 5240

Approximate Reception Ranges

UK and German Signals North American Signal

Anthorn

500 kilometers

1,500 kilometers

Inside a vehicle

Mainﬂ ingen

Near household appliances, ofﬁ ce equipment, or a mobile phone

Near a construction site, airport, or other sources of electrical noise

The Anthorn signal is receivable within this area.

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Signal reception may not be possible at the distances noted below during certain times x of the year or day. Radio interference may also cause problems with reception.

Mainﬂ ingen (Germany) or Anthorn (England) transmitters: 500 kilometers

−

(310 miles) Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)

−

Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles) − Shangqiu (China) transmitter: 500 kilometers (310 miles) −

As of December 2010, China does not use Daylight Saving Time (DST). If China x does go to the Daylight Saving Time system in the future, some functions of this watch may no longer operate correctly. Using this watch in a country covered by a time calibration signal that is different

from the countries it supports may result in incorrect time indication due to local application of daylight saving time (summer time), etc.

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Signal reception may be difﬁ cult or even impossible under the conditions x described below.

Inside or among buildings

2,000 miles (3,000 kilometers)

600 miles (1,000 kilometers)

Fort Collins

Near high-tension power lines

Among or behind mountains

Japanese Signals Chinese Signal

Fukushima

500 kilometers

Fukuoka/Saga

1,000 kilometers

To get ready for a receive operation

Conﬁ rm that the watch is in the Timekeeping Mode. If it isn’t, hold down 1. C for at least two seconds to enter the Timekeeping Mode.

Place the watch in a location where signal reception is good.2.

12 o’clock

What you should do next depends on whether you are using Auto Receive or 3. Manual Receive.

Auto Receive: Leave the watch over night in the location you selected in step 2.

See “Auto Receive” on page E-25 for details.

Manual Receive: Perform the operation under “To perform manual receive” on page E-26.

Auto Receive

With Auto Receive, the watch performs the receive operation each day automatically up to six times (up to ﬁ ve times for the Chinese calibration signal) between the hours of midnight and 5 a.m. (according to the Timekeeping Mode time). When any receive operation is successful, none of the other receive operations for that day are performed. When a calibration time is reached, the watch will perform the receive operation

only if it is in the Timekeeping Mode. The receive operation is not performed if a calibration time is reached while you are conﬁ guring settings.

Position the watch as shown in the x nearby illustration, with 12 o’clock pointed towards a window. Make sure there are no metal objects nearby. Signal reception normally is better

at night. The receive operation takes from x two to seven minutes, but in some cases it can take as long as 14 minutes. Take care that you do not perform any button operation or move the watch during this time.

Changchun500 kilometers

1,500 kilometers

Beijing Shangqiu Shanghai Chengdu Hong Kong

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E-23

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To perform manual receive

In the Timekeeping Mode (page E-33), keep 1. B depressed (for about two seconds)

Second Hand goes through the following sequence.

as the

Moves to x Y (YES) or N (NO) to indicate the last signal reception result, then to R (READY).

Second Hand indicates the operations the watch is currently performing.

The 2.

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When the xx Second Hand is pointed here:

R (READY)

W (WORK) Reception is in progress.

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If signal reception is unstable, the x xx Second Hand may move between W (WORK) and R (READY). When the receive operation is successful, the watch

adjusts the time setting accordingly, and then resumes regular timekeeping. It does not adjust the setting if the operation failed.

It means this:

Watch is setting up for reception.

To turn auto receive on and off

Y (YES)

E-28

N (NO)

In the Timekeeping Mode, press 1. B. The Hand will move to Y (YES) or N (NO) to indicate the last calibration signal receive result.

Pull out the crown.2.

Second Hand will perform one full revolution and

The then stop at the current on/off setting.

Rotate the crown to move the 3.



setting you want.

To turn on auto receive, select

x Y (YES).

To turn off auto receive, select x N (NO).

Push the crown back in to return to the Timekeeping 4. Mode.

Second

Second Hand to the

Note

To interrupt a receive operation and return to the Timekeeping Mode, press any button.

To check the result of the latest receive operation

In the Timekeeping Mode, press B. The Hand will move to Y (YES) or N (NO) to indicate the last calibration signal receive result.

The

xx Second Hand will move to Y (YES) if the latest

receive operation was successful, or N (NO) if it was not.



After about 10 seconds, regular timekeeping will resume. Press

x B to return to regular timekeeping. The watch will

also return to regular timekeeping if you do not perform any operation for about 10 seconds.

Note

xx Second Hand will indicate N (NO) if you have adjusted the time or day

The setting manually since the latest receive operation.

Radio-controlled Atomic Timekeeping Precautions

Strong electrostatic charge can result in the wrong time setting. Even if a receive operation is successful, certain conditions can cause the time x setting to be off by up to one second. The watch is designed to update its day setting automatically for the period from x January 1, 2000 to December 31, 2099. Updating of the day setting by signal reception will no longer be performed starting from January 1, 2100.

If you are in an area where signal reception is not possible, the watch keeps time with the precision noted in “Speciﬁ cations” (page E-82). The receive operation is disabled under any of the following conditions. x

While power is at Level 2 or lower (page E-14) − While the watch is in the power recovery mode (page E-15) − While the watch is in the function sleep state (power saving, page E-17) − While the watch is in the World Time Mode (page E-53) − While a countdown timer operation is in progress (page E-63) −

A receive operation is cancelled if an alarm sounds while it is being performed. x

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Second

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