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
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 
, 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.
3.Place the watch on a level surface facing any direction you want, and press B to calibrate the first direction.
•When the calibration procedure is complete, the message 
appears in the upper display area. This soon changes to 
and the magnetic north pointer flashes at the 6 o’clock position to indicate that the watch is ready for the second direction.
4.Rotate the watch 180 degrees.
5.Press B again to calibrate the second direction.
•When the calibration procedure is complete, the message 
appears in the upper display area. After a short while, the watch automatically returns to the Digital Compass Mode screen.
Precautions about bidirectional calibration
•You can use any two opposing directions for bidirectional calibration. You must, however, make sure that they are 180 degrees opposite each other. Remember that if you perform the procedure incorrectly, you will get wrong bearing sensor readings.
•Do not move the watch during the one or two seconds (from the point you
press B up to the point that 
appears in the upper display area) that the calibration of each direction is in progress. If you do, the message
appears in the upper display area, which means you have to restart the bidirectional calibration procedure from the beginning.
•The appearance of 
during bidirectional calibration can also be caused by local interference. If you suspect that this is the case, move to another location and try the procedure again.
•You should perform bidirectional calibration in an environment that is the same as that where you plan to be taking direction readings. If you plan to take direction readings in an open field, for example, calibrate in an open field.
To perform northerly calibration
1. While in the Digital Compass Mode, hold down A until the upper display area
changes to show 
, which indicates the setting screen.
2. Press D to start the northerly calibration procedure.
• At this time, the indicator (direction 
) appears in the upper display area.
3.Place the watch on a level surface, and position it so that its 12 o’clock position points north (as measured with another compass).
4.Press B to start the calibration operation.
•When the calibration procedure is complete, the message 
appears in the upper display area. After a short while, the watch automatically returns to the Digital Compass Mode screen.
Changing the Barometric Pressure and Temperature Units
Changing the barometric pressure units automatically restarts the barometric pressure graph.
To change the Barometric Pressure and Temperature Units
1. Enter the Barometer/Thermometer Mode.
2. Hold down A until the message OFF appears (flashing), which indicates the setting screen.
• A temperature value appears instead of OFF (factory calibration) if you previously calibrated the temperature sensor.
3.Press D to move the flashing to the unit setting you want to change (°C/°F or hPa[mb]/inHg).
• Pressing D moves the flashing in the sequence shown below.
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| °C / °F |
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| hPa[mb]/inHg |
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| Calibration |
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| Pressure |
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4.Press E or B to select the unit you want.
5.Press A to return to the Barometer/Thermometer Mode screen.