2271-2
DIGITAL COMPASS
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.
To take a direction reading
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.
Direction
Direction value (in degrees)
Timekeeping Mode time
Magnetic north pointer
12 o’ clock position
NW
0°
W
N
W
W
WSW
SW
S
S
W
S
S
S
E
SE
ESE
E
E
N
E
NE
N
N
E
N
N
N
W
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.
• 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.
Direction
Meaning
Direction
Meaning
Direction
Meaning
Direction
Meaning
Direction bezel
NNE
ESE
SSW
WNW
NE
SE
SW
NW
North-
northeast
East-
southeast
South-
southwest
West-
northwest
Northeast
Southeast
Southwest
Northwest
East-
northeast
South-
southeast
West-
southwest
North-
northwest
ENE
SSE
WSW
NNW
North
East
South
West
N
E
S
W
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.
Barometric pressure graph
(unit: 1hPa (mb)/0.05 inHg)
Temperature
Barometric pressure
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.
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 C in 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”.
Not visible on
the display.
Understanding the Barometer/Thermometer Screen
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.
• 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
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.
