Casio 5181 User Manual

MA1011-EA

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Operation Guide 5181

About This Manual

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

Hand Functions

Hour Hand Second Hand Minute Hand

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E-2

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

Use the procedure under “To conﬁ gure Home City settings” (page E-20) to conﬁ gure your Home City and daylight saving time settings.

Important!

Proper World Time setting depends on correct Home City, time, and date settings in the Timekeeping Mode. Make sure you conﬁ gure these settings correctly.

3. Set the current time.

See “Conﬁ guring Current Time and Date Settings” (page E-24).

The watch is now ready for use.

Left Dial Hand: Indicates the current mode. Lower Dial Hand Right Dial Hands: Indicate a time, in 24-hour format,

Day

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

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.

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.

Things to check before using the watch

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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 in 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-8).

YES

Second Hand.

The watch is charged sufﬁ ciently. For details about charging, see “Charging the Watch” (page E-8).

Go to step 2.

YES

Contents

E-2 About This Manual

E-3 Things to check before using the watch

E-8 Charging the Watch

E-15 To recover from the sleep state

E-16 Mode Reference Guide

E-17 To determine the watch’s current mode E-17 To return to the Timekeeping Mode from any other mode E-18 To select a mode

E-19 Timekeeping

E-20 Conﬁ guring Home City Settings

E-20 To conﬁ gure Home City settings

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E-3

E-4

E-22 To toggle the Home City time between standard time and daylight

E-24 Conﬁ guring Current Time and Date Settings

E-30 Using the Stopwatch

E-33 Using the Countdown Timer

E-37 Checking the Current Time in a Different Time Zone

E-6

saving time

E-24 To change the current time setting E-27 To change the current date setting

E-31 To perform elapsed time measurement E-31 To perform an elapsed time operation E-31 To pause at a split time

E-34 To specify the countdown start time E-35 To perform a countdown timer operation E-36 To stop the alarm

E-38 To view the time in another time zone

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.

Charging Guide

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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.

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-14) if its face is blocked by your sleeve even only partially.

E-39 To specify standard time or daylight saving time (DST) for a city E-41 To swap your Home City and World Time City

E-43 Using the Alarm

E-44 To change the alarm time setting E-44 To turn the alarm on or off E-44 To stop the alarm

E-45 Adjusting the Home Positions

E-45 To adjust the home positions

E-49 Troubleshooting

E-54 Speciﬁ cations

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 x 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.

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E-9

Operation Guide 5181

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Power Levels

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Moves at two-second intervals.

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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 overuse of the alarm tone 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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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 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 x is already in a sleep state when 6:00 AM arrives, however, it will remain in the sleep state.

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

You can get an idea of the watch’s power level by observing the movement of the Timekeeping Mode.

If the

Second Hand is moving normally in one-second

intervals, power is at Level 1. 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.

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

functions enabled

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

Second Hand in the

Level Hand Movement Function Status

1 Normal. All functions enabled.

Second Hand moving at two-second

intervals.

Day changes to 1 (home position).

xx Second Hand stopped.

z Hour Hand and cc Minute Hand stopped at 12 o’clock.

When power drops to Level 3, all functions will be disabled but the watch will x continue to keep time internally for about one week. If you recharge the battery sufﬁ ciently 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.

Beeper and countdown timer operation disabled.

All functions disabled.

Charging Times

Exposure Level (Brightness)

Outdoor sunlight (50,000 lux) 8 minutes 2 hours 27 hours

Window sunlight (10,000 lux) 30 minutes 6 hours 100 hours

Window sunlight on cloudy day (5,000 lux)

Indoor ﬂ uorescent lighting (500 lux) 8 hours 112 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 x Supply” section of the Speciﬁ cations (page E-55).

To recover from the sleep state

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

Daily

Operation

48 minutes 10 hours 162 hours

Level Change *2

Level 3 Level 2 Level 1

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E-14

Mode Reference Guide

Your watch has ﬁ ve “modes”. The mode you should select depends on what you want to do.

To do this: Enter this mode: See:

View the current time in your Home City and in one x of 29 other cities around the globe

View the current date in the Home City x Conﬁ gure Home City and daylight saving time x

(DST) settings Conﬁ gure time and date settings x

Use the stopwatch to measure elapsed time Stopwatch Mode E-30

Use the countdown timer Countdown Timer Mode E-33

View the current time in one of 29 cities (time zones) around the globe

Set an alarm time Alarm Mode E-43

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To select a mode

Press C to cycle between the modes as shown below. The indicates the currently selected mode.

Timekeeping Mode Stopwatch Mode

The hand indicates the day of the week (SU, MO, TU, WE, TH,

FR, SA).

Alarm Mode

The hand points to ALM.

E-18

Timekeeping Mode E-19

World Time Mode E-37

Left Dial Hand

The hand points to (at 12 o’clock).

Countdown Timer Mode

The hand points to TMR.

World Time Mode

The hand points to STD or DST.

Selecting a Mode

With this watch, everything starts from the Timekeeping Mode.

To determine the watch’s current mode

Check the position of the under “To select a mode” (page E-18).

To return to the Timekeeping Mode from any other

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mode

Hold down C at least two seconds until the watch beeps twice.

Left Dial Hand as shown

Timekeeping

Use the Timekeeping Mode to view the current time and date. To enter the Timekeeping Mode from any other mode, hold down C at least two seconds.

Hand Functions

Hour Hand Second Hand Minute Hand Left Dial Hand: Indicates the day of the week.

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Right Dial Hands:

Indicate the current time in the World Time City (page E-37) in 24-hour format.

Day

Lower Dial Hand: Indicates the current hour in the

Home City Time in 24-hour format.

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