G-Shock GW-M850-7 User Manual

MO0807-EA

Operation Guide 3155

Getting Acquainted

Congratulations upon your selection of this CASIO watch. To get the most out of your purchase, be sure to read this manual carefully.

Keep the watch exposed to bright light

Bright Light

Solar cell

• The watch continues to operate, even when it is not exposed to light. Leaving the watch in the dark can cause the battery to run down, which will result in some watch functions to be disabled. If the battery goes dead, you will have to re-configure watch settings after recharging. To ensure normal watch operation, be sure to keep it exposed to light as much as possible.

Battery charges in the light.

Solar cell (Converts light to electrical power.)

Charge

The electricity generated by the solar cell of the watch is stored by a built-in battery. Leaving or using the watch

where it is not exposed to light causes the battery to run

down. Make sure the watch is exposed to light as much as possible.

• When you are not wearing the watch on your wrist, position the face so it is pointed at a source of bright light.

• You should try to keep the watch outside of your sleeve as much as possible. Charging is reduced significantly if the face is only partially covered.

Battery discharges in the dark.

Bright Light

Electrical energy

All

LEVEL 1

functions

LEVEL 2

enabled

LEVEL 3

LEVEL 4

Rechargeable battery

Dis-

charge

LEVEL 1

LEVEL 2

LEVEL 3

LEVEL 4

Some or all functions disabled

• The actual level at which some functions are disabled depends on the watch model.

• Frequent display illumination can run down the battery quickly and require charging.

The following guidelines give an idea of the charging time required to recover from a single illumination operation.

Approximately 5 minutes exposure to bright sunlight coming in through a window

Approximately about 8 hours exposure to indoor fluorescent lighting

• Be sure to read “Power Supply” for important information you need to know when exposing the watch to bright light.

If the display of the watch is blank...

If the display of the watch is blank, it means that the watch’s Power Saving function has turned off the display to conserve power.

• See “Power Saving Function” for more information.

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.

About This Manual

• 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 sample displays in this manual are shown using dark figures on a light background.

• Button operations are indicated using the letters shown in the illustration.

• Each section of this manual provides you with the information you need to perform

operations in each mode. Further details and technical information can be found in the “Reference” section.

General Guide

• Press C to change from mode to mode.

• In any mode (except when a setting screen is on the display), press L to illuminate

the display.

Timekeeping Mode

Press C.

▲

Radio-controlled Atomic Timekeeping

This watch receives a time calibration signal and updates its time setting accordingly.

• This watch is designed to pick up the time calibration signals transmitted in Germany (Mainflingen), England (Anthorn), the United States (Fort Collins), China (Shangqiu), and Japan (Fukushima, Fukuoka/Saga).

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 purchasing this watch is to specify your Home City (the city where you normally will use the watch). For more information, see “To specify your Home City” below.

• When using the watch outside the areas covered by the time signal transmitters, you will have to adjust the current time setting manually as required. See “Timekeeping” for more information about manual time settings.

• The U.S. time calibration signal can be picked up by the watch while in North America. The term “North America” in this manual refers to the area that consists of Canada, the continental United States, and Mexico.

To specify your Home City

City code

Hour : Minutes

PM indicator Seconds

YVR, LAX : Vancouver, Los Angeles YEA, DEN: Edmonton, Denver MEX, CHI : Mexico City, Chicago MIA, YTO, NYC : Miami, Toronto, New York YHZ : Halifax YYT : St.Johns

3. Press A to exit the setting screen.

• Normally, your watch should show the correct time as soon as you select your Home City code. If it does not, it should adjust automatically after the next auto receive operation (in the middle of the night). You also can perform manual receive or you can set the time manually.

• The watch will receive the time calibration signal automatically from the applicable transmitter (in the middle of the night) and update its settings accordingly. For information about the relationship between city codes and transmitters, see “Time Calibration Signal Reception” and “Transmitters”.

1. In the Timekeeping Mode, hold down A until the city

code starts to flash, which indicates the setting screen.

2. Press D (east) and B (west) to select the city code

you want to use as your Home City.

LIS, LON : Lisbon, London MAD, PAR , ROM, BER, STO : Madrid, Paris,

Rome, Berlin, Stockholm

ATH : Athens MOW : Moscow HKG, BJS, TPE : Hong Kong, Beijing, Taipei SEL, TYO : Seoul, Tokyo HNL : Honolulu ANC : Anchorage

Rally Mode Recall Mode

▲

Countdown Timer

Mode

▲

Stopwatch Mode Alarm Mode

▲

• See the maps under “Approximate Reception Ranges” for information about the reception ranges of the watch.

• You can disable time signal reception, if you want. See “To turn auto receive on and off” for more information.

• Under factory default settings, auto receive is turned off for all of the following city codes: MOW (Moscow), HNL (Honolulu), and ANC (Anchorage). For details about turning on auto receive for these city codes, see “To turn auto receive on and off”.

Time Calibration Signal Reception

There are two different methods you can use to receive the time calibration signal: auto receive and manual receive.

• Auto Receive

With auto receive, the watch receives the time calibration signal automatically up to 6 times a day (5 times a day for the Chinese calibration signal). When any auto receive is successful, the remaining auto receive operations are not performed. For more information, see “About Auto Receive”.

• Manual Receive

Manual receive lets you start a time calibration receive operation with the press of a button. For more information, see “To perform manual receive”.

Important!

• When getting ready to receive the time calibration signal, position the watch as shown in the nearby illustration, with its 12 o’clock side facing towards a window. This watch is designed to receive a time calibration signal late at night. Because of this, you should place the watch near a window as shown in the illustration when you take it off at night. Make sure there are no metal objects nearby.

12 o’clock

• Make sure the watch is facing the right way.

• Proper signal reception can be difficult or even impossible under the conditions listed

below.

Inside or among buildings

Inside a vehicle

Near household appliances, office equipment, or a mobile phone

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

World Time Mode

▲

Near hightension power lines

Among or behind mountains

▲

Operation Guide 3155

• Signal reception normally is better at night than during the day.

• Time calibration signal reception takes from 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 operations or move the watch during this time.

• The time calibration signal the watch will attempt to pick up depends on its current Home City code setting as shown below.

Home City Code

LON, PAR, BER, ATH,

LIS, MAD, ROM, STO, MOW*

HKG, BJS

TPE, TYO, SEL

HNL*, ANC*, LAX, DEN,

CHI, NYC, YVR, YEA, MEX,

MIA, YTO, YHZ, YYT

* The areas covered by the HNL, ANC, and MOW city codes are quite far from the

time calibration signal transmitters, and so certain conditions may cause problems with signal reception.

• Calibration signal reception is disabled while a countdown timer/target time operation is in progress.

Approximate Reception Ranges

U.K. and German Signals

1,500 kilometers

Anthorn

500 kilometers

The Anthorn signal is receivable within this area.

Japan Signals

500 kilometers

Fukuoka/Saga

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

1,500 kilometers

500 kilometers

Chengdu

Shangqiu

• 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: 1500 kilometers (910 miles)

• Even when the watch is within the reception range of the transmitter, signal reception will be impossible if the signal is blocked by mountains or other geological formations between the watch and signal source.

• Signal reception is affected by weather, atmospheric conditions, and seasonal changes.

• See the information under “Signal Reception Troubleshooting” if you experience problems with time calibration signal reception.

About Auto Receive

The watch receives the time calibration signal automatically up to 6 times a day (5 times a day for the Chinese calibration signal). When any auto receive is successful, the remaining auto receive operations are not performed. The reception schedule (calibration times) depends on your currently selected Home City, and whether standard time or Daylight Saving Time is selected for your Home City.

Your Home City

LON,

Standard Time 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am Midnight*

LIS

Daylight 2:00 am 3:00 am 4:00 am 5:00 am Midnight* 1:00 am* Saving Time

Standard Time 2:00 am 3:00 am 4:00 am 5:00 am Midnight* 1:00 am*

PAR, BER,

Daylight 3:00 am 4:00 am 5:00 am Midnight* 1:00 am* 2:00 am*

MAD,

Saving Time

ROM, STO

Standard Time 3:00 am 4:00 am 5:00 am Midnight* 1:00 am* 2:00 am*

ATH

Daylight 4:00 am 5:00 am Midnight* 1:00 am* 2:00 am* 3:00 am* Saving Time

MOW

Standard Time 4:00 am 5:00 am Midnight* 1:00 am* 2:00 am* 3:00 am* Daylight 5:00 am Midnight* 1:00 am* 2:00 am* 3:00 am* 4:00 am*

Saving Time

HKG,

Standard Time 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am

BJS

and Daylight Saving Time

TYO,

Standard Time Midnight 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am

TPE, SEL

China Signal

123456

Transmitter

Anthorn (England) Mainflingen (Germany) Shangqiu City (China) Fukushima (Japan) Fukuoka/Saga (Japan)

Fort Collins, Colorado (the United States)

Mainflingen

U.S. Signal

500 kilometers

Fukushima

1,000 kilometers1,000 kilometers

Auto Receive Start Times

Changchun

Frequency

60.0 kHz

77.5 kHz

68.5 kHz

40.0 kHz

60.0 kHz

2,000 miles (3,000 kilometers)

600 miles (1,000 kilometers)

Fort Collins

Beijing

Shanghai

Hong Kong

Your Home City

Standard Time Midnight 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am

HNL,

and Daylight

ANC,

Saving Time

LAX, DEN, CHI, NYC, YVR, YEA, MEX, MIA, YTO, YHZ, YYT

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. Reception is not performed if a calibration time is reached while you are configuring settings.

• Auto receive of the calibration signal is designed to be performed early in the morning, while you sleep (provided that the Timekeeping Mode time is set correctly). Before going to bed for the night, remove the watch from your wrist, and put it in a location where it can receive the signal easily.

• The watch receives the calibration signal for two to seven minutes everyday when the time in the Timekeeping Mode reaches a calibration time. Do not perform any button operation within seven minutes before or after the calibration times. Doing so can interfere with correct calibration.

• Remember that reception of the calibration signal depends on the current time in the Timekeeping Mode. The receive operation will be performed whenever the display shows any one of the calibration times, regardless of whether or not the displayed time actually is the correct time.

About the Signal Strength Indicator

The signal strength indicator shows the strength of the calibration signal being received. For best reception, be sure to keep the watch in a location where signal strength is strongest. The signal strength indicator is displayed while an auto or manual receive operation is in progress.

• Even in an area where signal strength is strong, it takes about 10 seconds for signal

• Use the signal strength indicator as a guide for checking signal strength and for

• Following reception of the time calibration signal and calibration of the watch’s time

• The settings updated indicator is displayed only when the watch is able to receive

• The settings updated indicator indicates that at least one of the auto calibration

To perform manual receive

If there was a previously successful reception

If no reception was successful

Settings updated indicator

Signal strength indicator

reception to stabilize enough for the signal strength indicator to indicate signal strength.

finding the best location for the watch during signal receive operations.

setting, the settings updated indicator will remain on the display in all modes. The settings updated indicator will not be displayed if signal reception was unsuccessful or after you adjust the current time setting manually.

both time and date data successfully. It does not appear when only time data is received.

signal receive operations was successful. Note, however, that the settings updated indicator disappears from the display each day when the first auto receive operation of the day is performed.

Receiving

Receive successful

Receive failed

123456

1. Enter the Timekeeping Mode.

2. Hold down D for about two seconds until

3. After manual receive is complete, press D to return to

• The watch also will exit the Receive Mode if you do not

• If the latest reception fails but a previous reception was

Note

• To interrupt a receive operation and return to the

Auto Receive Start Times

*Next day

Weak

(Level 1)

flash on the display.

• Time calibration signal reception takes from two to seven minutes. Take care that you do not perform any button operations or move the watch during this time.

• If the receive operation is successful, the reception date and time appear on the display, along with the

GET indicator.

the Timekeeping mode.

perform any button operation for about one or two minutes.

successful, an indicator ( The watch will enter the Receive 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.

Receive Mode, press D.

) will be on the display.

Strong

(Level 3)

starts to

Operation Guide 3155

To turn auto receive on and off

On/Off status

To check the latest signal reception results

1. In the Timekeeping Mode, press D to display the last

successful receive time and date screen.

2. Hold down A until the current auto receive setting (

or OFF) starts to flash. This is the setting screen.

• Note that the setting screen will not appear if the currently selected Home City is one that does not support time calibration reception.

3. Press D to toggle auto receive on (

4. Press A to exit the setting screen.

• For information about city codes that support signal receive, see “To specify your Home City”.

Press D to view the last successful receive time and date. Press D again to return to the previous screen.

ON) and off (OFF).

Rally Mode

The Rally Mode of your watch can be used to measure special stage elapsed time, and to keep track of the goal target time (countdown). The Rally Mode timing operation is shown in the illustration below.

Start point

Elapsed time 1/10-second indicator

Remaining target time (hours:minutes)

Special stage (competitive section 42' 30" 0)

Target time (0:50)

D Start D Stop

Special Stage Elapsed Time Measurement

The special stage elapsed time is measured up to 99 hours, 59 minutes, 59.9 seconds. If the time exceeds this, timing reverts to zero and continues from there.

Before Starting Measurement

LT-05 target time (0:50)

LT-05

To change a target time

4. Use the D (+) and B (–) buttons to change the hour digit value.

5. Press the C button to move the flashing to the minute digits.

6. Use the D (+) and B (–) buttons to change the minute digit value.

7. After the time is setting you want, press the A button to exit the setting screen.

The watch comes with 10 preset target times (link times), which you can use as-is or change to the value you want. You can use the B button to select the target time you want while the current target time is reset to its initial value. LT-01 0:10 LT-07 1:30 LT-02 0:20 LT-08 2:00 LT-03 0:30 LT-09 3:00 LT-04 0:40 LT-10 5:00 LT-05 0:50 OFF LT-06 1:00

1. While the current target time is reset to its initial value in

the Rally Mode, hold down A until the display contents start to flash. This is the setting screen.

2. Use the D (+) and B (–) buttons to select the target

(link) time you want to change.

3. Press the C button so the current target time’s hour

digit starts to flash.

You can set a target time up to 24 hours, in units of one minute.

Target (link) time

number

Target time hours

To start a Rally Mode time measurement

Auto start countdown seconds indicator

Remaining auto start countdown time (36 seconds indicated here)

Press the D button to start the auto start countdown. Time measurement (special stage) will start when the auto start countdown reaches 00 seconds.

• The watch will beep and display illumination will flash whenever the remaining auto countdown time reaches 50, 40, 30, 20, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 and 0 seconds.

• You can cancel the auto start countdown at any point and start time measurement (special stage) manually by pressing the D button.

• You can cancel the countdown and return to the countdown start screen by pressing the B button while a countdown is in progress.

Special stage elapsed time (hours, minutes, seconds, 1/10-second)

Target time

minutes

Signal Reception Troubleshooting

Check the following points whenever you experience problems with signal reception.

Cannot perform manual receive.

Auto receive is turned on, but the settings updated indicator does not appear on the display.

Time setting is incorrect following signal reception.

• For further information, see “Important!” under “Time Calibration Signal Reception” and “Radio-controlled Atomic Timekeeping Precautions”.

Special stage time measurement end Goal

• The watch is not in the Timekeeping Mode.

• Your current Home City is not one of the following: LIS, LON, MAD, PA R,

ROM, BER, STO, ATH, MOW, HKG, BJS, TPE, SEL, TYO, HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI, MIA, YTO, NYC, YHZ, or YYT

• You changed the time setting manually.

• The DST setting was changed manually in the World Time Mode.

• You pressed a button while signal receive was in progress.

• Even if receive is successful, the settings updated indicator disappears from the display each day when the first auto receive operation of the day is performed.

• Time data (hour, minutes, seconds) only was received during the last receive operation. The settings updated indicator appears only when time data and date data (year, month, day) are both received.

• If the time is one hour off, the DST setting may be incorrect.

• The Home City code setting is not correct for the area where you are using the watch.

Remaining target time (minutes, seconds)

Road section (non-competitive 07' 30" 0)

B Record elapsed time

Special Stage Timing

Target time

Measured elapsed time

To record the time paused on the display

While a time is paused on the display (see above), press the B button.

• This will save the paused time in memory and display the ongoing special stage timing operation.

• The watch has enough memory to store up to 30 measurement time records. If there are already 30 records in memory, storing a new measurement time causes the oldest record to be deleted automatically to make room for the new one.

To reset the timing operation to zero

While a time is paused on the display (see above), hold down the B button.

• This will reset the elapsed time operation to zero.

To cancel an ongoing elapsed time measurement operation

Hold down the B button to reset the elapsed time operation to zero.

To change screen contents during elapsed time measurement

Press the B button to display the remaining target time. Note that this operation is not available if “OFF” is selected for the target time.

When the remaining target time is 5 minutes or more

Target time

Remaining Target Time Alert

The watch will beep and display illumination will flash when the remaining target time reaches the following points, 5, 3 and 1 minute, and 30, 10, 5, 4, 3, 2, and 1 second before time up, and at time up.

This section describes operations you can perform while special stage timing is in progress.

To pause the current time on the display

While a special stage timing operation is in progress press

the D button.

• This will pause the current elapsed time (flashing) on the

display for about one or two minutes. Though the time is frozen on the display, the watch continues the special stage timing operation (and count down of the remaining target time) internally.

• While a time is paused on the display, you can record it in memory or reset the timing operation to zero. If you don’t do anything, the display will return to the normal elapsed time measurement screen after a few minutes.

What you should doProblem Probable Cause

• Enter the Timekeeping Mode and try again.

• Select LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW, HKG, BJS, TPE, SEL, TYO, HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI, MIA, YTO, NYC, YHZ, or YYT as your

Home City.

• Perform manual signal receive or wait until the next auto signal receive operation is performed.

• Check to make sure the watch is in a location where it can receive the signal.

• Change the DST setting to Auto DST.

• Select the correct Home City code.

The watch returns to the reset screen automatically when the target time becomes zero.

When the remaining target time is less than 5 minutes

Target time

+ 5 hidden pages

G-Shock GW-M850-7 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Getting Acquainted

General Guide

Radio-controlled Atomic Timekeeping

Rally Mode