Operation Guide 5269
Digital Compass Precautions
Magnetic North and True North
True north | The northerly direction can be expressed either as | ||
magnetic north or true north, which are different from each | |||
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Magnetic north |
| other. Also, it is important to keep in mind that magnetic | |
| north moves over time. | ||
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•Magnetic north is the north that is indicated by the needle of a compass.
•True north, which is the location of the North Pole of the
Earth | Earth’s axis, is the north that is normally indicated on | |
maps. | ||
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•The difference between magnetic north and true north is called the “declination”. The closer you get to the North Pole, the greater the declination angle.
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 ferroconcrete 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 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 the procedure under “To perform bidirectional calibration” (page
Thermometer
This watch uses a temperature sensor to take temperature readings.
To enter and exit the Thermometer Mode
1. In the Timekeeping Mode or Digital Compass Mode, press D.
•THERMO will appear on the digital display for about one second indicating that temperature readings
are being taken. After that, the measurement result will appear.
• The watch will take temperature readings every five seconds for one or two minutes.
•To restart temperature readings, press D.
Temperature 2. Press C to return to the Timekeeping Mode.
•If you do not perform any button operation for one or two minutes after temperature measurement is complete, the watch will automatically return to the Timekeeping Mode.
Temperature
•Temperature is displayed in units of 0.1°C (or 0.2°F).
•The displayed temperature value changes to
Display Units
You can select either Celsius (°C) or Fahrenheit (°F) for the displayed temperature value. See “To specify temperature unit” (page
Temperature Sensor Calibration
The watch’s temperature sensor is calibrated at the factory and normally requires no further adjustment. If you notice serious errors in the temperature readings produced by the watch, you can calibrate the sensor to correct the errors.
Important!
•Incorrectly calibrating the temperature sensor can result in incorrect readings. Carefully read the following before doing anything.
–Compare the readings produced by the watch with those of another reliable and accurate thermometer.
–If adjustment is required, remove the watch from your wrist and wait for 20 or 30 minutes to give the temperature of the watch time to stabilize.
To correct the temperature value
You can correct the temperature readings displayed by the watch in accordance with another measuring instrument for more accurate readings.
1. In the Thermometer Mode, hold down A until the current temperature value flashes on the digital display. This is the setting screen.
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2.Use D (+) and B
•Each press of a button changes the temperature value in units of 0.1°C (0.2°F).
•To return the currently flashing value to its initial factory default setting, press B and D at the same time. OFF will appear at the flashing location for about one second, followed by the initial default value.
3.Press A to return to the Thermometer Mode.
Thermometer Precautions
•Temperature measurements are affected by your body temperature (while you are wearing the watch), direct sunlight, and moisture. To achieve a more accurate temperature measurement, remove the watch from your wrist, place it in a well ventilated location out of direct sunlight, and wipe all moisture from the case. It takes approximately 20 to 30 minutes for the case of the watch to reach the actual surrounding temperature.
•When taking temperature readings, it is best to remove the watch from your wrist in order to eliminate the effects of body heat. Remove the watch from your wrist and allow it to hang freely from your bag or in another location where it is not exposed to direct sunlight.
Specifying Temperature Unit
Use the procedure below to specify the temperature unit to be used in the Thermometer Mode.
Important!
When TOKYO is selected as the Home City, the temperature unit is set automatically to Celsius (°C). These settings cannot be changed.
To specify the temperature unit
1.Enter the Thermometer Mode and then hold down A for about two seconds until the current temperature value flashes on the digital display. This is the setting screen.
2.Press C to display the temperature unit setting screen with either °C or °F (the current setting) flashing.
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3.Press D to toggle the temperature unit between °C (Celsius) and °F (Fahrenheit).
4.After the setting is the way you want, press A to exit the setting screen.
Looking up Sunrise and Sunset Times
You can use the Sunrise/Sunset Mode to look up the sunrise and sunset times for a particular date (year, month, day) and location.
To look up the sunrise and sunset times on a specific date
(or
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Sunrise time or sunset time
Use C to select the Sunrise/Sunset Mode as shown on page
•SUNRISE TIME or SUNSET TIME will appear on the digital display for about one second. After that the current year, month, and day will appear for about one second.
•Next, CALC will appear to indicate that calculation is in progress. After the calculation is complete, the sunrise time or sunset time for the current date will appear.
•What appears first when the enter the Sunrise/Sunset Mode (either the sunrise time or sunset time) will be the time that was displayed when you last exited the Sunrise/Sunset Mode.