2271-7

Low Battery Indicator

This message indicates that battery power is too low to perform the measurement. It appears whenever battery power drops below a certain level, or when you try to perform a measurement under very cold conditions (below about –10°C/14°F).

If the cause of the low battery indicator is due to use under cold conditions, normal operation should return after the watch is brought back to normal temperature.

If the cause of the low battery indicator is due to low battery power (indicated

when appears under normal temperatures), you should have the watch’s batteries replaced as soon as possible. Note that replacement of the batteries causes all memory contents to be deleted.

Sensor Malfunction Indicator

This message flashes on the display to indicate malfunction of pressure sensor circuitry.

Note that calibrating the Digital Compass can

also cause the message to appear. In this case, the message does not indicate sensor malfunction, and the condition should be corrected when you re-calibrate the Digital Compass.

Important!

•If a sensor malfunctions or if battery power is low when it comes time for a measurement to be taken, the measurement value appears as xxxx on the display. In the case of barometric pressure measurement, the corresponding point on the barometric pressure graph is left blank.

•There may be cases where the (sensor malfunction)

or (low battery) message disappears from the display when you change modes. In this case, you can continue using the watch normally unless the warning indicator reappears.

Whenever you have a sensor malfunction, be sure to take the watch to an authorized CASIO distributor or service provider as soon as possible.

Auto Return Features

•After you perform an operation in the Recall, Alarm, and Stopwatch Modes, pressing D returns to the Timekeeping Mode.

•If you leave the watch in the Digital Compass, Barometer/Thermometer, or Altimeter Mode for 10 to 11 hours without performing any operation, the watch beeps and automatically returns to the Timekeeping Mode.

•If you leave a screen with flashing digits on the display for two or three minutes without performing any operation, the watch automatically saves anything you have input up to that point and exits the setting screen.

Data and Setting Scrolling

The E and B buttons are used in various modes and setting screens to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed.

Timekeeping

•The day of the week is automatically displayed in accordance with the date (year, month, and day) settings.

•The year can be set in the range of 2000 to 2039.

•The watch’s built-in full automatic calendar automatically makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch’s batteries replaced.

12-hour/24-hour Timekeeping Formats

The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is also applied in all modes.

•With the 12-hour format, the P (PM) indicator appears to the left of the hour digits for times in the range of noon to 11:59 p.m. and no indicator appears to the left of the hour digits for times in the range of midnight to 11:59 a.m.

•With the 24-hour format, times are displayed in the range of 0:00 to 23:59, with 24 indicator.

Backlight Precautions

•The electro-luminescent panel that provides illumination loses power after very long use.

•The illumination provided by the backlight may be hard to see when viewed under direct sunlight.

•The watch will emit an audible sound whenever the display is illuminated. It does not indicate malfunction of the watch.

•The backlight automatically turns off whenever an alarm sounds.

•The backlight remains lit for about one second from the point you press the button, even if it is already lit when you press the button. If you keep the button depressed for one second or more, the backlight automatically turns off.

•Frequent use of the backlight shortens the battery life.

Auto light switch precautions

•Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light switch to operate when it is not needed, which shortens battery life. If you want to wear the watch on the inside of your wrist, turn off the auto light switch feature.

More than 15 degrees

• The backlight may not light if the face of the

too high

watch is more than 15 degrees above or

 

below parallel. Make sure that the back of

 

your hand is parallel to the ground.

 

• The backlight turns off in about one second,

 

even if you keep the watch pointed towards

 

your face.

•Static electricity or magnetic force can interfere with proper operation of the auto light switch. If the backlight does not light, try moving the watch back to the starting position (parallel with the ground) and then tilt it back toward you again. If this does not work, drop your arm all the way down so it hangs at your side, and then bring it back up again.

•Under certain conditions, the backlight may not light until about one second after you turn the face of the watch towards you. This does not necessarily indicate malfunction of the backlight.

Digital Compass Precautions

This watch features a built-in magnetic bearing sensor that detects terrestrial magnetism. This means that north indicated by this watch is magnetic north, which is somewhat different from true polar north. The magnetic north pole is located in northern Canada, while the magnetic south pole is in southern Australia. Note that the difference between magnetic north and true north as measured with all magnetic compasses tends to be greater as one gets closer to either of the magnetic poles. You should also remember that some maps indicate true north (instead of magnetic north), and so you should make allowances when using such maps with this watch.

Location

•Taking a direction reading when you are near a source of strong magnetism can cause large errors in readings. Because of this, you should avoid taking direction readings while in the vicinity of the following types of objects: permanent magnets (magnetic necklaces, etc.), concentrations of metal (metal doors, lockers, etc.), high tension wires, aerial wires, household appliances (TVs, personal computers, washing machines, freezers, etc.)

•Accurate direction readings are impossible while in a train, boat, air plane, etc.

•Accurate readings are also impossible indoors, especially inside ferro- concrete structures. This is because the metal framework of such structures picks up magnetism from appliances, etc.

Storage

•The precision of the bearing sensor may deteriorate if the watch becomes magnetized. Because of this, you should be sure to store the watch away from magnets or any other sources of strong magnetism, including: permanent magnets (magnetic necklaces, etc.) and household appliances (TVs, personal computers, washing machines, freezers, etc.)

•Whenever you suspect that the watch may have become magnetized, perform one of the calibration procedures under “Calibrating the Bearing Sensor” below.

Calibrating the Bearing Sensor

Whenever you suspect that direction readings produced by the watch are wrong, you should calibrate it. You can use either one of two calibration procedures: bidirectional calibration or northerly calibration.

Use bidirectional calibration when you want to take readings within an area exposed to magnetic force. This type of calibration should be used if the watch become magnetized for any reason.

With northerly calibration, you “teach” the watch which way is north (which you have to determine with another compass or some other means). You could use this calibration procedure, for example, to set the watch to indicate true north instead of magnetic north.

Important!

•If you want to perform both bidirectional and northerly calibration, be sure to perform bidirectional calibration first, and then perform northerly calibration. This is necessary because bidirectional calibration cancels any previously set northerly calibration setting.

•The more correctly you perform bidirectional calibration, the better the accuracy of the bearing sensor readouts. You should perform bidirectional calibration whenever you change environments where you use the bearing sensor, and whenever you feel that the bearing sensor is producing incorrect readings.

To perform bidirectional calibration

1.Enter the Digital Compass Mode.

2.Hold down A until the upper display area

changes to show -1-, which indicates the setting screen.

• At this time, the magnetic north pointer flashes at the 12 o’clock position to indicate that the watch is ready to calibrate the first direction.