Casio GWG-100-1A3ER User manual

MA1711-EA

Operation Guide 5561

ENGLISH

Congratulations upon your selection of this CASIO watch.

To ensure that this watch provides you with the years of service for which it is designed, carefully read and follow the instructions in this manual, especially the information under “Operating Precautions” and “User Maintenance”.

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 your watch or its malfunction.

Things to check before using the watch

1. Check the battery power level.

Is H or M indicated as the battery power indicator (page E-13)?

Battery power indicator

E-2

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

Use the procedure under “To configure Home City settings” (page E-40) to configure your Home City and daylight saving time settings.

Important!

x Proper time calibration signal reception and World Time Mode data depend on

correct Home City, time, and date settings in the Timekeeping Mode. Make sure you configure 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-24).

x To set the time manually

See “Configuring Current Time and Date Settings Manually” (page E-44).

YES

About This Manual

x Depending on the model of your watch, display text

appears either as dark figures on a light background, or light figures on a dark background. All examples in this manual are shown using dark figures on a light background.

x Button operations are indicated using the letters shown

in the illustration.

x 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.

The watch is charged. For details about charging, see “Charging the Watch” (page E-10).

Go to step 2.

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-10).

The watch is now ready for use.

x For details about the watch’s radio controlled timekeeping feature, see “Radio

Controlled Atomic Timekeeping” (page E-19).

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E-3

E-4

Contents

About This Manual .............................................................................................E-1

Things to check before using the watch .......................................................... E-2

Charging the Watch ......................................................................................... E-10

To recover from the sleep state .................................................................... E-18

Radio Controlled Atomic Timekeeping ..........................................................E-19

To get ready for a receive operation ............................................................. E-24

To perform manual receive ........................................................................... E-27

To check the latest signal reception results .................................................. E-31

To enable or disable auto receive ................................................................. E-32

Mode Reference Guide .................................................................................... E-35

Timekeeping ..................................................................................................... E-39

E-6

Using the Countdown Timer ...........................................................................E-55

To enter the Countdown Timer Mode ........................................................... E-55

To specify the countdown start time ............................................................ E-55

To perform a countdown timer operation ..................................................... E-57

To stop the alarm .......................................................................................... E-57

Using the Alarm ................................................................................................ E-58

To enter the Alarm Mode .............................................................................. E-58

To set an alarm time .....................................................................................E-59

To test the alarm ........................................................................................... E-60

To enable or disable an alarm or the Hourly Time Signal .............................. E-61

To stop a sounding alarm .............................................................................E-61

Illumination ....................................................................................................... E-63

To turn on illumination manually ................................................................... E-63

To change the illumination duration .............................................................. E-64

To enable or disable the auto light switch .................................................... E-67

E-8

Configuring Home City Settings .....................................................................E-40

To configure Home City settings .................................................................. E-40

To change the Daylight Saving Time (summer time) setting ......................... E-42

Configuring Current Time and Date Settings Manually ................................E-44

To change the current time and date settings manually ............................... E-44

Using the World Time Mode ............................................................................ E-48

To enter the World Time Mode ..................................................................... E-48

To view the time in another time zone ..........................................................E-48

To specify standard time or daylight saving time (DST) for a city ................. E-49

To swap your Home Time and World Time Cities ......................................... E-50

Using the Stopwatch ....................................................................................... E-52

To enter the Stopwatch Mode ...................................................................... E-52

To perform an elapsed time operation .......................................................... E-53

To pause at a split time ................................................................................. E-53

To measure two finishes ............................................................................... E-53

Hand Home Position Adjustment .................................................................... E-70

To adjust home positions manually ............................................................... E-70

Moving the Hands for Easy Viewing of Digital Information ..........................E-72

To move the hands to view digital information ............................................. E-73

To return the hands to their normal positions ............................................... E-73

Other Settings ..................................................................................................E-75

To enable or disable the button operation tone ............................................ E-75

To enable or disable Power Saving............................................................... E-77

Troubleshooting ............................................................................................... E-78

Specifications ................................................................................................... E-85

Operating Precautions ..................................................................................... E-88

User Maintenance ............................................................................................ E-98

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E-7

E-9

Operation Guide 5561

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-10

x 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. Expose the watch to bright light whenever possible.

Power Levels

You can get an idea of the watch’s power level by observing the battery power indicator.

Battery power indicator

E-12

x At Level 5, all functions are disabled and settings return to their initial factory

defaults. Once the battery reaches Level 2 (M) after falling to Level 5, reconfigure the current time, date, and other settings.

x Display indicators reappear as soon as the battery is charged from Level 5 to

Level 2 (M).

x Leaving the watch exposed to direct sunlight or some other very strong light

source can cause the battery power indicator to show a reading temporarily that is higher than the actual battery level. The correct battery level should be indicated after a few minutes.

x The current time and all other settings return to their initial factory defaults

whenever battery power drops to Level 5 and when you have the battery replaced.

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

x Best charging

performance is achieved by exposing the watch to the strongest light available.

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

x The watch may enter a

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

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.

x On the dashboard of a car parked in direct sunlight x Too close to an incandescent lamp x Under direct sunlight

Important!

x Allowing the watch to become very hot can cause the digital displays to black out.

The appearance of the LCD should become normal again when the watch returns to a lower temperature.

x Enable the watch’s Power Saving function (page E-17) and keep it in an area normally

exposed to bright light when storing it for long periods. This helps to ensure that power does not run down.

Level

Battery Power Indicator

(H)

(M)

(L and

LOW)

(CHG)

x The flashing LOW message at Level 3 (L) tells you that battery power is very low,

and that exposure to bright light for charging is required as soon as possible.

Power Recovery Mode

x Performing multiple illumination, beeper, and/or high-speed hand movement

operations during a short period may cause all of the battery power indicators (H, M, and L) to start flashing. This indicates that the watch is in the power recovery mode. Illumination, alarm, countdown timer alarm, and hourly time signal operations will be disabled until battery power recovers.

x Battery power will recover in about 15 minutes. At this time, the battery power

indicators (H, M, L) will stop flashing. This indicates that the functions listed above are enabled again.

x If all of the battery power indicators (H, M, L) are flashing and the CHG (charge)

message also is flashing, it means the battery level is very low. Expose the watch to bright light as soon as possible.

x Frequent flashing of all of the battery power indicators (H, M, L) probably means

that remaining battery power is low. Leave the watch in bright light to allow it to charge.

All functions enabled.

Auto and manual receive, illumination, and beeper disabled. Except for Timekeeping Mode, all other modes disabled.

All functions and display indicators disabled except for timekeeping and display of the CHG (charge) indicator. Hour and minute hands stopped at 12 o’clock.

All functions disabled.

Function Status

E-11

E-13

E-14

Charging Times

Exposure Level (Brightness)

Outdoor sunlight (50,000 lux)

Window sunlight (10,000 lux)

Window sunlight on cloudy day (5,000 lux)

Indoor fluorescent lighting (500 lux)

* 1 Approximate exposure each day to generate power for normal daily operation. * 2 Approximate exposure time (in hours) required to take power up one level.

x The above exposure times all are for reference only. Actual exposure times depend

on lighting conditions.

E-16

x 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.

x 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, press any button, or angle the watch towards your face for reading (page E-65).

E-18

Daily

Operation

Level 5 Level 4 Level 3 Level 2 Level 1

8 min. 3 hours 24 hours 7 hours

30 min. 7 hours 90 hours 25 hours

48 min. 11 hours

8 hours 142 hours – – – – – –

Level Change *2

146 hours

39 hours

E-15

x For details about the operating time and daily operating conditions, see the “Power

Supply” (page E-87) section of the Specifications.

Power Saving

When enabled, 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.

x For information about enabling and disabling power saving, see “To enable or

disable Power Saving” (page E-77).

x There actually are two sleep state levels: “display sleep” and “function sleep”.

Elapsed Time in Dark Digital Displays Operation

60 to 70 minutes (display sleep) Blank

6 or 7 days (function sleep) Blank

Digital display is disabled, but all functions are enabled.

Hour and minute hands stop at 12o’clock. All functions are disabled, but timekeeping is maintained.

E-17

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” (page E-44) 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.

E-19

Operation Guide 5561

If your Home City Code setting is this:

LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW

HKG, BJS Shangqiu City (China)

TPE, SEL, TYO Fukushima (Japan), Fukuoka/Saga (Japan)

HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI, NYC, YHZ, YYT

Important!

x The areas covered by MOW, HNL and ANC are quite far from the calibration

signal transmitters, so certain conditions may cause reception problems.

x When HKG or BJS 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 configure Home City settings” (page E-40) for information about how to do this.

E-20

Japanese Signals Chinese Signal

500 kilometers

Fukuoka/Saga

Signals are receivable in the Taiwan area when reception conditions are good.

E-22

To get ready for a receive operation

1. Confirm that the watch is in the Timekeeping Mode. If it isn’t, use C to enter the

Timekeeping Mode (page E-36).

2. The antenna of this watch is located on its 12 o’clock side. Position the watch with 12 o’clock facing towards a window as shown in the nearby illustration. Make sure there are no metal objects nearby.

Fukushima

1,000 kilometers

12 o’clock

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

Anthorn (England), Mainflingen (Germany)

Fort Collins, Colorado (United States)

Changchun500 kilometers

Beijing Shangqiu

Shanghai

Chengdu Hong Kong

1,500 kilometers

x Signal reception normally is better

at night.

x The receive operation takes from three

to eight minutes, but in some cases it can take as long as 16 minutes. Take care that you do not perform any button operation or move the watch during this time.

Approximate Reception Ranges

UK and German Signals North American Signal

Anthorn

500 kilometers

1,500 kilometers

Inside a vehicle

Mainflingen

Near household appliances, office equipment, or a mobile phone

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

The Anthorn signal is receivable within this area.

x Even when the watch is within range of a transmitter, signal reception may be

impossible due to the effects of geographic contours, structures, weather, the time of year, the time of day, radio interference, etc. The signal becomes weaker at distances of approximately 500 kilometers, which means that the influence of the conditions listed above becomes even greater.

x Signal reception may not be possible at the distances noted below during certain

times of the year or day. Radio interference may also cause problems with reception.

− Mainflingen (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)

x As of January 2017, China does not use Daylight Saving Time (DST). If China does

go to the Daylight Saving Time system in the future, some functions of this watch may no longer operate correctly.

x Signal reception may be difficult or even impossible under the conditions

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

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E-24

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

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

See “Auto Receive” below for details.

x Manual Receive: Perform the operation under “To perform manual receive” on

page E-27.

Auto Receive

x With Auto Receive, the watch performs the receive operation each day

automatically up to six times (up to five 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.

x When a calibration time is reached, the watch will perform the receive operation

only if it is in the Timekeeping Mode or World Time Mode. The receive operation is not performed if a calibration time is reached while you are configuring settings, while a countdown timer operation is in progress, or while the hands have been moved for easier viewing of digital information (page E-73).

E-26

Receive successful

RCVD indicator

E-28

x If the receive operation is successful, the reception

date and time will appear. The watch will return to the Timekeeping Mode if you press D or if you do not perform any button operation for about one or two minutes.

E-25

x You can use the procedure under “To enable or disable auto receive” (page E-32) to

enable or disable auto receive.

To perform manual receive

Receiving

Signal level indicator

In the Timekeeping Mode, hold down D until the watch beeps.

x A signal level indicator (page E-30) appears after reception

starts. Do not move the watch or perform any button operation until GET or ERR appears.

E-27

Receive failed

If there was a previously

successful reception

x If the current reception fails but a previous reception

(within the last 24 hours) was successful, RCVD and ERR will be displayed. If only ERR is displayed (without RCVD), it means that all of the receive operations over the past 24 hours have failed. The watch will return to the Timekeeping Mode without changing the time setting if you press D or if you do not perform any button operation for about one or two minutes.

Note

x To interrupt a receive operation and return to the

Timekeeping Mode, press any button.

E-29

Operation Guide 5561

Signal Level Indicator

Signal level indicator

E-30

To enable or disable auto receive

On/Off status

RCVD indicator

During manual receive, a signal level indicator will be displayed as shown below.

Weak

(Unstable)

As you watch the indicator, keep the watch in a location that best maintains stable reception.

x Even under optimum reception conditions, it can take

about 10 seconds for reception to stabilize.

x Note that weather, the time of day, surroundings, and

other factors all can affect reception.

Strong

(Stable)

1. In the Timekeeping Mode, press D (page E-39).

2. Hold down A until the current auto receive setting

(ON or OFF) and RCVD indicator start to flash. This is the setting screen.

x The hour and minute hands will automatically move

out of the way at this time (page E-72).

x Note that the watch will not display the setting screen

if the currently selected Home City is one that does not support time calibration reception.

3. Press D to toggle between auto receive on (ON) and off (OFF).

4. Press A to exit the setting screen.

E-32

x The Home City setting reverts to the initial default of TYO (Tokyo) whenever the

battery power level drops to Level 5 or when you have the rechargeable battery replaced. If this happens, change the Home City to the setting you want (page E-40).

E-34

To check the latest signal reception results

Radio-controlled Atomic Timekeeping Precautions

x Strong electrostatic charge can result in the wrong time setting. x Even if a receive operation is successful, certain conditions can cause the time

setting to be off by up to one second.

x The watch is designed to update the date and day of the week automatically for

the period January 1, 2000 to December 31, 2099. Updating of the date by signal reception will no longer be performed starting from January 1, 2100.

x If you are in an area where signal reception is not possible, the watch keeps time

with the precision noted in “Specifications” (page E-85).

x The receive operation is disabled under any of the following conditions.

− While power is at Level 3 (L) or lower (page E-13)

− While the watch is in the power recovery mode (page E-15)

− When the watch is in the function sleep state (“Power Saving”, page E-17)

− While a countdown timer operation is in progress (page E-55)

− While the hands are in positions to allow easier viewing (page E-73)

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

In the Timekeeping Mode, press D (page E-39).

x When receive is successful, the time and date that

receive was successful will be displayed. - : - - indicates that none of the receive operations were successful.

x To return to the Timekeeping Mode, press D.

Note

x RCVD will not be displayed if you have adjusted the time

or date setting manually since the last receive operation.

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E-33

Mode Reference Guide

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

To do this: Enter this mode: See:

x View the current date in the Home City x Configure Home City and daylight saving time (DST)

settings

x Configure time and date settings manually x Perform a time calibration receive operation x Check whether the last receive operation was successful x Switch between 12-hour and 24-hour timekeeping x Display an alarm countdown

View the current time in one of 48 cities (31 time zones) around the globe

Use the stopwatch to measure elapsed time Stopwatch Mode E-52 Use the countdown timer Countdown Timer Mode E-55 Set an alarm time Alarm Mode E-58

Timekeeping Mode

World Time Mode E-48

E-39

E-35

Selecting a Mode

x The illustration below shows which buttons you need to press to navigate between

modes.

x To return to the Timekeeping Mode from any other mode, hold down C for at

least four seconds.

Timekeeping Mode

C C

E-36

General Functions (All Modes)

The functions and operations described in this section can be used in all of the modes.

Auto Return

x The watch returns to the Timekeeping Mode automatically if you do not perform

any button operation for two or three minutes in the Alarm Mode.

x If you leave the watch with a setting screen (flashing digits) displayed for two or

three minutes without performing any operation, the watch will exit the setting screen automatically.

Initial Screens

When you enter the World Time or Alarm Mode, the data you were viewing when you last exited the mode appears first.

Scrolling

The B and D buttons are used in the setting screen to scroll through data. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed.

E-38

World Time Mode

Countdown Timer Mode

Alarm Mode Stopwatch Mode

E-37

Timekeeping

Minutes

Hour

Day of the week

Month Day

Use the Timekeeping Mode to set and view the current time and date.

x Each press of A cycles the Home City information as

shown below.

Month, Day,

Day of the week

Month, Day,

Seconds

A A

PM indicator

Hour : Minutes,

Seconds

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+ 7 hidden pages