Not visible on the display.

2271-2

DIGITAL COMPASS

Understanding the Barometer/Thermometer Screen

A built-in bearing sensor detects magnetic north and indicates one of 16 directions on the display. Direction readings are performed in the Digital Compass Mode.

•You can calibrate the bearing sensor if you suspect the direction reading is incorrect.

To enter and exit the Digital Compass Mode

1.While in the Timekeeping, Barometer/Thermometer, or Altimeter Mode, press B to enter the Digital Compass Mode.

•At this time, the watch immediately starts a Digital Compass operation. After about two seconds, letters appear on the display to indicate the direction that the 12 o’clock position of the watch is pointing.

2.Press D to return to the Timekeeping Mode.

Barometric pressure graph (unit: 1hPa (mb)/0.05 inHg)

Temperature

Barometric pressure

Press C to enter the Barometer/Thermometer Mode.

•Barometric pressure is displayed in units of 1hPa/mb (or 0.05inHg).

•Temperature is displayed in units of 0.1°C (or 0.2°F).

•The displayed barometric pressure value changes to xxxx hPa/mb (or inHg) if a measured barometric pressure falls outside the range of 260 hPa/mb to 1100 hPa/mb (7.65 inHg to 32.45 inHg). The barometric pressure value will be displayed again as soon as the measured barometric pressure is within the allowable range.

To take a direction reading

• The displayed temperature value changes to xx. x °C (or °F) if a

measured temperature falls outside the range of –10.0°C to 60.0°C (14.0°F

Magnetic north pointer

12 o’clock position Direction

Timekeeping Mode time

Direction value (in degrees)

 

W NW N

N

W

 

 

 

N

 

0°

W

 

 

 

W

 

 

 

 

N

 

 

WSW

 

 

 

 

N

 

 

 

 

 

N

 

 

 

 

 

E

SW

 

 

 

 

 

 

NE

W

 

 

 

 

 

N

E

S

 

 

 

 

E

 

S

 

 

 

 

 

 

 

S

 

 

 

 

E

 

 

E

S

ESE

 

 

 

 

S SE

 

 

 

 

 

 

 

 

 

 

 

 

1.Enter the Digital Compass Mode.

2.Place the watch on a flat surface or (if you are wearing the watch), make sure that your wrist is horizontal (in relation to the horizon).

3.Point the 12 o’clock position of the watch in the direction you want to measure.

4.Press B to start a Digital Compass measurement operation.

•After about two seconds, the direction that the 12 o’clock position of the watch is pointing appears on the display.

•Also, four pointers appear to indicate magnetic north, south, east, and west.

•After the first reading is obtained, the watch continues to take direction readings automatically each second, for up to 30 seconds.

•The COMP indicator flashes on the display while a measurement is in progress.

•The direction value that appears on the display represents the clockwise angle formed between magnetic north (which is 0 degrees) and the displayed direction.

to 140.0°F). The temperature value will be displayed again as soon as the

measured temperature is within the allowable range.

• Some countries refer to the barometric pressure unit hecto-pascal (hPa) as

millibars (mb). It really makes no difference, because 1hPa = 1mb. In this

manual, we use hPa/mb or hPa (mb).

Barometric Pressure Graph

Barometric pressure indicates changes in the atmosphere. By monitoring these changes you can predict the weather with reasonable accuracy. The barometric pressure graph shows the barometric readings for the past 26 hours. The flashing point on the right of the display is the point for the newest measurement. Note that pressure graph readings are relative to the newest measurement point. One dot above the newest point is plus 1hPa(mb)/ 0.05inHg, while one dot below is minus 1hPa(mb)/0.05inHg. The following shows how to interpret the data that appears on the barometric pressure graph.

A rising graph generally means improving weather.

A falling graph generally means deteriorating weather.

Note that if there are sudden changes in weather or temperature, the graph line of past measurements may run off the top or bottom of the display. The entire graph will become visible once barometric conditions stabilize.

Note

•Note that taking a measurement while the watch is not horizontal (in relation to the horizon) can result in large measurement error.

•Pressing B while in the Digital Compass Mode starts a new direction measurement operation.

•The following table shows the meanings of each of the direction abbreviations that appear on the display.

Direction

Meaning

Direction

Meaning

Direction

Meaning

Direction

Meaning

N

North

NNE

North-

NE

Northeast

ENE

East-

 

 

 

northeast

 

 

 

northeast

E

East

ESE

East-

SE

Southeast

SSE

South-

 

 

 

southeast

 

 

 

southeast

S

South

SSW

South-

SW

Southwest

WSW

West-

 

 

 

southwest

 

 

 

southwest

W

West

WNW

West-

NW

Northwest

NNW

North-

 

 

 

northwest

 

 

 

northwest

Direction bezel

• You can adjust the rotary direction bezel so

that the “N” is aligned with the magnetic

 

 

north pointer. This correctly aligns all of the

 

markings on the bezel.

 

• The Digital Compass operation is

 

automatically interrupted whenever an

 

alarm (Daily Alarm or Hourly Time Signal)

 

sounds. If this happens, start the Digital

 

Compass operation again from the

 

beginning.

 

• See “Digital Compass Precautions” for other

 

important information about taking direction

 

readings.

BAROMETER/THERMOMETER

This watch uses a pressure sensor to measure air pressure (barometric pressure) and a temperature sensor to measure a temperature.

•You can calibrate the temperature sensor and the pressure sensor if you suspect that readings are incorrect.

The following conditions cause the barometric pressure measurement to be skipped, with the corresponding point on the barometric pressure graph being left blank.

•Barometric reading that is out of range (260 hPa/mb to 1100 hPa/mb or 7.65 inHg to 32.45 inHg)

•Sensor malfunction

•Dead batteries

About Barometric and Temperature Measurements

•Barometric pressure and temperature measurement operations are performed as soon as you enter the Barometer/Thermometer Mode. After that, temperature measurements are taken every five seconds for the first three minutes, and then taken every five minutes thereafter.

•The BARO indicator flashes on the display while a measurement is in progress.

•The barometer automatically takes measurements every two hours (starting from midnight), regardless of what mode you are in. The results of these measurements are used for the barometric pressure graph.

•You can also perform a barometric pressure and temperature measurement at any time by pressing Cin the Barometer/Thermometer Mode.

Barometer and Thermometer Precautions

•The pressure sensor built into this watch measures changes in air pressure, which you can then apply to your own weather predictions. It is not intended for use as a precision instrument in official weather prediction or reporting applications.

•Sudden temperature changes can affect pressure sensor readings.

•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 off all moisture from the case. It takes approximately 20 to 30 minutes for the case of the watch to reach the actual surrounding temperature.

•You can change the measured barometric pressure unit between hecto- pascals/millibars (hPa/mb) and inchesHg (inHg). See “Changing the Barometric Pressure and Temperature Units” for details.

•You can change the measured temperature value displayed by this watch between Celsius (°C) and Fahrenheit (°F). See “Changing the Barometric Pressure and Temperature Units”.