MO0901-EA Module No.
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. • Be sure to keep all user documentation handy for future reference. • 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.
Bright light l l l l l l l l l l l Keep the watch exposed to bright light Solar cell 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.
• 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.
• The actual level at which some functions are disabled depends on the watch model. • Be sure to read “Power Supply” (page E-47) for important information you need to know when exposing the watch to bright light. If the analog hands aren’t moving... If the analog hands aren’t moving, it means that the power saving mode has stopped them to save battery power. • See “Power Saving” (page E-56) for more information. • The hands also stop when the watch’s battery runs down. Note that CASIO COMPUTER CO., LTD.
About This Manual Hour hand Minute hand 30 Day Second hand E-4 • Button operations are indicated using the letters shown in the illustration. • Each section of this manual provides you with the information you need in order to perform operations in each mode. Further details and technical information can be found in the “Reference” section.
Contents General Guide ......................................................................................................... E-8 Radio-controlled Atomic Timekeeping ............................................................... E-11 World Time ............................................................................................................. E-33 Configuring Time and Date Settings Manually ................................................... E-37 Auto Hand Home Position Correction ............
Procedure Lookup The following is a handy reference list of all the operational procedures contained in this manual. To specify your Home City ................................................................................... E-12 To check the current Home City STD/DST setting ............................................. E-14 To perform manual receive .................................................................................. E-28 To check the latest signal reception results ......................
To trigger the auto hand home position correction operation manually ......... E-42 To recover from the sleep state ...........................................................................
General Guide Timekeeping Mode Receive Status Check (page E-30) 30 Press A. ▲ ▲ ▲ Press any button. Hold down A for about five seconds. Press A. 30 30 ▲ Hold down A for about two seconds.
• Press C to change the mode. • Except while the watch is performing auto hand home position correction, holding down C for about two seconds will return directly to the Timekeeping Mode.
Timekeeping Mode Hour hand World Time Mode (page E-33) Minute hand Day Timekeeping Mode Operations • To check the current Home City setting by pressing D (page E-12) • To check the latest signal reception results by pressing A (page E-30) E-10 ▲ Second hand ▲ Press C.
Radio-controlled Atomic Timekeeping This watch receives a time calibration signal and updates its time setting accordingly. • Supported time calibration signals: Germany (Mainflingen), England (Anthorn), United States (Fort Collins), China (Shangqiu), and Japan (Fukushima or Fukuoka/Saga) • See the information under “Signal Reception Troubleshooting” (page E-31) if you experience problems with time calibration signal reception.
To specify your Home City 1. Press C to enter the World Time Mode. 2. Use D to move the second hand clockwise to the city code you want to use as your Home City. • Note that it can take as long as one minute for the hands to move to the applicable time. 30 • All operations except for the following are disabled while the watch’s hands are moving to the current time for a newly selected city code.
3. Hold down A for about two seconds to toggle the current Home City between standard time (STD) and daylight saving time (DST). • See “To change the STD/DST setting of a particular city code” (page E-35) for details. 4. After the settings are the way you want, hold down B for about three seconds until the watch returns to the Timekeeping Mode. • As you hold down B, the second hand will move to either AM or PM, and then the watch will enter the Timekeeping Mode.
To check the current Home City STD/DST setting 1. In the Timekeeping Mode, press D. This will cause the second hand to move to the current Home City setting. 2. The second hand will move to either STD (standard time) or DST (daylight saving time) after about two seconds or if you press D. 3. The watch will return to the Timekeeping Mode after about two seconds or if you press D.
Home City Code LON: London PAR: Paris ATH: Athens HKG: Hong Kong TYO: Tokyo (HNL): Honolulu (ANC): Anchorage LAX: Los Angeles DEN: Denver CHI: Chicago NYC: New York Transmitter German/U.K. Signals Anthorn (England) Mainflingen (Germany) China Signal Shangqiu City (China) Japan Signals Fukushima (Japan) Fukuoka/Saga (Japan) U.S. Signal Fort Collins, Colorado (the United States) Frequency 60.0 kHz 77.5 kHz 68.5 kHz 40.0 kHz 60.0 kHz 60.
• City codes in parentheses indicate areas where reception may be possible only when conditions are good. • For full information on city codes, see the “City Code Table” at the back of this manual. • In addition to the above, you also can select city codes that are outside the ranges of the time calibration signal transmitters supported by this watch. • Note that this watch does not have a city code that corresponds to Newfoundland. • The U.S.
Approximate Reception Ranges U.K. and German Signals 1,500 kilometers Anthorn Mainflingen U.S. Signal 500 kilometers 2,000 miles (3,000 kilometers) The Anthorn signal is receivable within this area.
Japan Signals 500 kilometers 500 kilometers Fukuoka/Saga Fukushima 1,000 kilometers 1,000 kilometers China Signal Changchun 1,500 kilometers 500 kilometers Beijing Shanghai Chengdu Shangqiu E-18 Hong Kong
• Signal reception may not be possible up to the distances noted below during certain times of the year or day. Radio interference may also cause problems with reception.
Daylight Saving Time (DST) Daylight Saving Time (summer time) advances the time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time. • Note that the start and end of daylight saving time, and whether it is used at all depends on each country and geographic area. • You can check the current DST setting, which is indicated by the second hand, for your Home City (page E-12) or any World Time City (page E-33).
• The watch will not adjust the DST setting automatically while either of following city codes is selected as the Home City. In this case, you will need to change between standard time and daylight saving time manually. HKG, HNL • As of June 2008, 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.
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 six times a day (five times for the China signal). When any auto receive is successful, the remaining auto receive operations are not performed. For more information, see “About Auto Receive” (page E-25).
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 or • 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 Near hightension power lines Among or behind mountains • Signal reception normally is better at night than during the day.
About Auto Receive The watch receives the time calibration signal automatically up to six times a day (five times for the China 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 Daylight Saving Time PAR Standard Time Daylight Saving Time ATH Standard Time Daylight Saving Time TYO Standard Time HKG Standard Time HNL, ANC, Standard Time LAX, DEN, Daylight CHI, NYC Saving Time Auto Receive Start Times 1 2 3 1:00 am 2:00 am 3:00 am 2:00 am 3:00 am 4:00 am 4 5 6 4:00 am 5:00 am Midnight* 5:00 am Midnight* 1:00 am* 2:00 am 3:00 am 3:00 am 4:00 am 4:00 am 5:00 am Midnight* 1:00 am* 5:00 am Midnight* 1:00 am* 2:00 am* 3:00 am 4:00 am 4:00 am 5:00 am
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 receipt 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).
To perform manual receive 1. Place the watch on a stable surface so its 12 o’clock side is facing towards a window (page E-23). 2. In the Timekeeping Mode, hold down A for about two seconds. 3. The second hand will move to READY (R) to indicate 30 that the watch is setting up for time calibration reception. • The second hand will move to WORK (W) and stay there while actual reception is in progress.
• If reception is successful, the second hand will move to YES (Y), and the date and time settings will be adjusted accordingly. Normal timekeeping will resume after that. 30 NO (N) YES (Y) Note • To interrupt a receive operation and return to the Timekeeping Mode, press any button. • If reception is not successful, the second hand will move to NO (N). Five seconds later, the second hand will resume normal operation, without any adjustment of the hand setting.
Viewing the Latest Signal Reception Results You can use the procedure below to check whether or not the last signal receive operation was successful. To check the latest signal reception results In the Timekeeping Mode, press A. • If the watch was able to perform a successful signal receive operation since midnight, the second hand will move to YES (Y). If the watch has been unable to receive any signal successfully, the second hand will 30 move to NO (N).
Signal Reception Troubleshooting Check the following points whenever you experience problems with signal reception. Problem Probable Cause What you should do The second • You changed the time setting • Perform manual signal receive at night or wait until hand is pointing manually. the next auto signal receive at NO (N). • You performed some button operation is performed. operation during the auto receive • Enter the Timekeeping operation. Mode and try again. • The watch is not in the Timekeeping Mode.
Problem Probable Cause What you should do The time setting • The Home City setting is not • Select the correct Home is incorrect correct for the area where you are City (page E-12). following signal using the watch. • Enter the home position reception. • The home position of the hands is adjustment mode and off. adjust the home position (page E-41). • For further information, see “Important!” (page E-23) and “Radio-controlled Atomic Timekeeping Precautions” (page E-54).
World Time 30 World time lets you display the current time in any one of 29 cities (29 time zones) around the world. • If the current time is not correct, check your current Home City settings and make adjustments as required (page E-37). • For full information on city codes, see the “City Code Table” at the back of this manual.
To search for a city In the World Time Mode, press D to move the second hand (which is pointing at the currently selected city code) clockwise. • About one second or so after you release D, the hands of the watch will move to the current time in the zone of the city code indicated by the second hand. • Note that it can take as long as one minute for the hands to move to the applicable time.
To change the STD/DST setting of a particular city code 1. In the World Time Mode, use D to select the city whose setting you want to change. 2. Hold down A for about two seconds to toggle between daylight saving time and standard time. 30 • Changing the setting will cause the second hand to move to STD or DST. • The second hand will return to the city code you selected in step 1 after about five seconds or if you ▲ Hold down press A again.
To check the STD/DST setting for a World Time Mode city 1. In the World Time Mode, use D to select the city whose setting you want to check. 2. Press A and the second hand will move to either STD or DST. • The second hand will return to the city code you selected in step 1 after about five seconds or if you press A again.
Configuring Time and Date Settings Manually You can use the following procedures to adjust the time and date settings when the watch is unable to receive a time calibration signal for some reason. 1. In the Timekeeping Mode, keep A depressed (for about five seconds) as the second hand moves to the last signal reception result (Y or N), then to READY (or R for some models), and then AM or PM. 2. Use C to cycle through available settings in the sequence shown below.
3. Use D (+) and B (–) to change the time setting in one-minute increments. 4. Press C to advance to the year tens digit setting.
Second hand 00 5. Press D to increase the year tens digit by one. 6. Press C to advance to the year ones digit setting. 10 20 30 90 40 80 70 Second hand 60 0 50 7. Press D to increase the year ones digit by one. 8. Press C to advance to the month setting.
NOV DEC 9. Press D to move to the next month. 10. Press C to advance to the day setting. JAN FEB OCT SEP MAR AUG APR JUL JUN MAY Second hand 30 E-40 11. Use D (+) and B (–) to change the day setting. 12. When everything is the way you want, press A. • This will exit the setting procedure and reset the seconds count to zero. • Press A to restart timekeeping on a time signal on the TV or radio.
Auto Hand Home Position Correction Strong magnetism or impact can cause the hands and/or day setting to be off, even if the watch is able to perform the signal receive operation. Auto hand home position correction corrects the hand position automatically. • Auto correction is performed in the Timekeeping Mode only. • The auto correction operation corrects the positions of the second, minute, and hour hands.
To trigger the auto hand home position correction operation manually • Perform the following procedure when the time setting is off. In the Timekeeping Mode, hold down B for about six seconds until the second hand completes one full revolution. 30 • Though the second hand will stop momentarily about three seconds after you hold down B, do not release the button yet. Wait until the second hand completes a full revolution before you release B.
The manually triggered auto home position correction operation performs the following two steps. 1. The hands will move automatically in order to determine the home positions of the watch. 2. After the hand home positions are determined, the watch will return to normal timekeeping automatically. This completes the correction operation.
Manual Home Position Correction Strong magnetism or impact can cause the hands and/or day setting to be off, even if the watch is able to perform the signal receive operation. If this happens, perform the following home position correction procedure. • Hand home position correction is not required if the time and day settings are correct. • You also can use auto hand home position correction (page E-41) to correct the home positions of the second, minute, and hour hands. 30 Second hand E-44 1.
Hour hand Minute hand 30 4. Press C to change to hour and minute hand correction. • This will cause the hour and minute hands to their home positions. • Home Positions Hour hand: 12 o’clock Minute hand: 12 o’clock 5. Use D (+) and B (–) to correct the hour and minute hands.
1 Day 6. Press C to change to day correction. • This causes the day to move to its home position. • Home Position Day: 1 7. Use D (+) and B (–) to correct the day indication. • Each press of D or B moves the day indicator very slightly. Keep pressing the applicable button until the day is aligned the way you want. 8. Press A to exit home position correction and return to normal timekeeping.
Power Supply This watch is equipped with a solar cell and a special rechargeable battery (secondary battery) that is charged by the electrical power produced by the solar cell. The illustration shown below shows how you should position the watch for charging. Example: Orient the watch so its face is pointing at a light source. • The illustration shows how to position a watch with a resin band. • Note that charging efficiency drops when any part of the solar cell is blocked by clothing, etc.
Important! • 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 rechargeable battery power to run down. Make sure that the watch is exposed to bright light whenever possible. • This watch uses a special rechargeable battery to store power produced by the solar cell, so regular battery replacement is not required.
Battery Power Levels The movement of the analog hands indicates the current battery power level. Level 30 Jumps two seconds Hand Movement Function Status 1 Normal. All functions enabled. 2 • Second hand jumps every 2 seconds. • Day changes to home position. Time calibration signal reception disabled. 3 • Second hand stopped. All functions disabled. • Hour and minute hands stopped at 12 o’clock. • The second hand jumping every two seconds (Level 2) indicates that battery power is quite low.
• When battery power is at Level 2, time calibration signal reception is disabled. • 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 normal timekeeping will resume.
Charging Guide After a full charge, timekeeping remains enabled for up to about five months. • The following table shows the amount of time the watch needs to be exposed to light each day in order to generate enough power for normal daily operations.
Recovery Times The table below shows the amount exposure that is required to take the battery from one level to the next. Exposure Level (Brightness) Approximate Exposure Time Level 3 Level 2 ▲ ▲ ▲ Outdoor sunlight (50,000 lux) Sunlight through a window (10,000 lux) Daylight through a window on a cloudy day (5,000 lux) Indoor fluorescent lighting (500 lux) Level 1 2 hours 25 hours 6 hours 92 hours 9 hours ––– 101 hours ––– • The above exposure time values are all for reference only.
Reference This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch. Auto Return Features • If you do not perform any operation for about two or three minutes in the current time setting mode, or in the hand/day home position correction mode, the watch will return to the Timekeeping Mode automatically.
Radio-controlled Atomic Timekeeping Precautions • Strong electrostatic charge can result in the wrong time being set. • The time calibration signal bounces off the ionosphere. Because of this, such factors as changes in the reflectivity of the ionosphere, as well as movement of the ionosphere to higher altitudes due to seasonal atmospheric changes or the time of day may change the reception range of the signal and make reception temporarily impossible.
Timekeeping • The year can be set in the range of 2000 to 2099. • The watch’s built-in full automatic calendar makes allowances for different month lengths and leap years. Once you set the date, there normally should be no reason to change it. Note, however, that if the watch is left uncharged for about one week after battery power drops to Level 3, the current time and all other settings return to their initial factory defaults. • The date will change automatically when the current time reaches midnight.
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) Second hand only is stopped, all other functions are enabled.
To recover from the sleep state Perform any one of the following operations. • Move the watch to a well-lit area. • Press any button.
Specifications Accuracy at normal temperature: ± 15 seconds a month (with no signal calibration) Timekeeping: Hour, minutes (hand moves every 10 seconds), seconds, day Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099 Other: Home City code (can be assigned one of 29 city codes and Coordinated Universal Time); Daylight Saving Time (summer time) / Standard Time Time Calibration Signal Reception: Auto receive up to six times a day (5 times a day for the Chinese calibration signal) (
World Time: 29 cities (29 time zones) Other: Standard Time/Daylight Saving Time (summer time); Home City specification Other: Power Saving, auto hand home position correction Power Supply: Solar cell and one rechargeable battery Approximate battery operating time: 6 months (no exposure to light; one signal reception of approximately 4 minutes per day) E-59
Operating Precautions Water Resistance • The following applies to watches with WATER RESIST or WATER RESISTANT marked on the back cover.
• Watches that do not have WATER RESIST or WATER RESISTANT marked on the back cover are not protected against the effects of sweat. Avoid using such a watch under conditions where it will be exposed to large amounts of sweat or moisture, or to direct splashing with water. • Even if a watch is water-resistant, do not operate its buttons or crown while it is submersed in water or wet. • Even if a watch is water-resistant, avoid wearing it in the bath or in areas where detergents (soap, shampoo, etc.
• The inside surface of the watch glass may fog when the watch is exposed to a sudden drop in temperature. No problem is indicated if the fogging clears up relatively quickly. If the fogging does not clear or if water has gotten into the watch, take the watch in for repair immediately. • Continued use of the watch with water inside can result in damage to electronic and mechanical components, the face of the watch, etc.
Temperature • Never leave the watch on the dashboard of a car, near a heater, or in any other location that is subject to very high temperatures. Do not leave the watch where it will be exposed to very low temperatures, either. Temperature extremes can cause the watch to lose or gain time, to stop, or otherwise malfunction. Impact • Your watch is designed to withstand impact incurred during normal daily use and light activity such as playing catch, tennis, etc.
Magnetism • The hands of analog and combination (analog-digital) watches are moved by a motor that uses magnetic force. When such a watch is close to a device (audio speakers, magnetic necklace, cell phone, etc.) that emits strong magnetism, the magnetism can cause timekeeping to slow down, speed up, or stop, resulting in the incorrect time being displayed. Electrostatic Charge • Exposure to very strong electrostatic charge can cause the watch to display the wrong time.
Resin Components • Allowing the watch to remain in contact with other items or storing it together with other items for long periods while it is wet can cause the color of the other items to transfer to the resin components of the watch. Be sure to dry off the watch thoroughly before storing it and make sure it is not in contact with other items.
Natural Leather and Imitation Leather Bands • Allowing the watch to remain in contact with other items or storing it together with other items while it is wet for long periods can cause the color of the other items to transfer to the natural leather or imitation leather band of the watch. Be sure to dry off the watch thoroughly before storing it and make sure it is not in contact with other items.
Bacteria and Odor Resistant Band • The bacteria and odor resistant band protects against odor generated by the formation of bacteria from sweat, which ensures good comfort and hygiene. In order to ensure maximum bacteria and odor resistance, keep the band clean. Use an absorbent soft cloth to wipe the band clean of dirt, sweat, and moisture. The bacteria and odor resistant band suppresses the formation of organisms and bacteria. It does not protect against rash due to allergic reaction, etc.
User Maintenance Caring for Your Watch • A dirty or rusty case or band can soil the sleeve of your clothing, cause skin irritation, and even interfere with watch performance. Be sure to keep the case and band clean at all times. Rust tends to form easily after the watch is exposed to seawater and then left without cleaning. • Sometimes a smudge like pattern may appear on the surface of a resin band. This will not have any affect on your skin or clothing. Wipe the band with a cloth to clean it.
Dangers of Poor Watch Care Rust • Though the stainless steel used for the watch is highly rust-resistant, rust can form if the watch is not cleaned after it becomes dirty. Failure of oxygen to come into contact with the metal because it is dirty causes breakdown of the oxidization layer on the metal surface, which leads to the formation of rust.
Battery • The special rechargeable (secondary) battery used by your watch is not intended to be removed or replaced by you. Use of a rechargeable battery other than the special one specified for this watch can damage the watch. • The rechargeable battery is charged when the solar cell is exposed to light, and so regular periodic replacement is not required.
City Code Table L-1
City Code Table City Code City UTC Offset/ GMT Differential City Code City UTC Offset/ GMT Differential PPG HNL ANC LAX DEN CHI NYC SCL RIO FEN RAI UTC LON PAR ATH Pago Pago Honolulu Anchorage Los Angeles Denver Chicago New York Santiago Rio De Janeiro Fernando de Noronha Praia –11 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 London Paris Athens +1 +2 JED THR DXB KBL KHI DEL DAC RGN BKK HKG TYO ADL SYD NOU WLG Jeddah Tehran Dubai Kabul Karachi Delhi Dhaka Yangon Bangkok Hong Kong Tokyo Adelaide Sydney Noumea
• Based on data as of June 2008. • The rules governing global times (UTC offset and GMT differential) and summer time are determined by each individual country.
