E-48
Note
• The barometric pressure graph is not displayed while the barometric pressure change indicator is
displayed.
• While the watch is in the Barometer Mode, the watch will update the display barometric pressure value
at regular intervals (every fi
remainder of the hour). Since the barometric pressure graph show automatic readings taken every two
hours, the graph is updated only at two-hour intervals.
• Large changes in barometric pressure may cause past readings to run off the
top or bottom of the graph display area.
• The following conditions cause the barometric pressure reading to be
skipped, with the corresponding point on the barometric pressure graph
being left blank.
– Barometric reading that is out of range (260 hPa to 1,100 hPa or 7.65 inHg to 32.45 inHg)
– Sensor malfunction
Not visible on
the display.
Not visible on
the display.
E-49
Barometric Pressure Change Indications
Whenever your watch detects a signifi
descent, or to the passage of a low pressure or high pressure area), it beeps to let you know. Also, an
arrow fl
let you know what a signifi
required.
The barometric pressure change indicator is displayed in the Barometer Mode and while the barometric
pressure graph is displayed in the Timekeeping Mode (page E-33).
• For example, you could enable the barometric pressure change indicator after arriving at a lodge or
campsite. Then, before setting out the following day, you could check for changes in barometric
pressure, which will give you some idea of upcoming weather conditions.
Reading the Barometric Pressure Change Indicator
Small Hand and Digital Display Meaning
Sudden fall in pressure.
Sudden rise in pressure.
Sustained rise in pressure, changing to a fall.
Sustained fall in pressure, changing to a rise.
• The barometric pressure change indicator is not displayed if there has been no noteworthy change in
barometric pressure. In such a case, the small hand is at 6 o’clock.
E-50
Important!
• To ensure proper results, take barometric readings under conditions where the altitude remains
constant.
• A change in altitude causes a change in barometric pressure. This means that correct barometric
pressure readings are not possible while you are changing altitudes. To avoid possible confusion, it is
probably best to disable the barometric pressure change indicator while you are on the move during
your climb.
To enable or disable the barometric pressure change indicator
In the Barometer Mode or the Timekeeping Mode, hold down
C
for at least two seconds until
INFO
appears on the digital display, and the current indicator setting toggles between
ON
(enabled) and
OFF
(disabled).
• The s
OFF
• BARO is s
• Note t
you tu
• Enab
toggl
Pres
Cha
set
C
to sele
• Note t
baro
• Note t
bat
E-51
Pressure Sensor Calibration
The pressure sensor built into the watch are calibrated at the factory and normally require no further
adjustment. If you notice serious errors in the pressure readings produced by the watch, you can calibrate
the sensor to correct the errors.
Important!
• Incorrectly calibrating the barometric pressure sensor can result in incorrect readings. Before
performing the calibration procedure, compare the readings produced by the watch with those of
another reliable and accurate barometer.
To calibrate the pressure sensor
1. Take a reading with another measurement device to determine the
exact current barometric pressure.
2. Use
A
to enter the Barometer Mode (
BARO
), as shown on page
E-31.
3. Pull out the crown. This will cause the current barometric pressure
reading value to fl
• The t
o’clock
4. Rotate the crown to adjust the barometric pressure value.
• Y
this setting.
• The c
• To return the setting to
OFF
(uncalibrated), press
A
and
C
at the
same time.
5. After you complete calibration, push the crown back in.
E-52
Barometer 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 offi
prediction or reporting applications.
• Extreme temperature changes can affect pressure sensor readings. Because of this, there may be
some error in the readings produced by the watch.
E-53
Taking Direction Readings
You can use the Digital Compass Mode to determine the direction of north, and to check your bearing to a
destination.
• For information about what you can do to improve digital compass reading accuracy, see “Calibrating
the Bearing Sensor” (page E-56) and “Digital Compass Precautions” (page E-60).
To take a direction reading
1. Place the watch on a fl
(in relation to the horizon).
2. Point the 12 o’clock position of the watch in the direction whose reading you want to take.
3. In the Timekeeping Mode or any sensor mode, press
A
a number of times until
COMP
(Digital
Compass Mode) appears on the digital display.
• In a no
B
for ab
perform the above
• AfCOMP ), the watch w
• St
12 o’clock po
direc
E-54
315°
0°
Objective
Bearing Indication
Meaning
N: North
E: East
W: West
S: South
Bearing to Objective:
Northwest
Bearing Angle
to Objective
North
Note
• Af
abo
• Pressing
C
or
L
, or rot
ope
rotated.
• The wa
operation i
• Pressing
B
whil
Ti
E-55
Important!
• If the second hand does not point exactly at 12 o’clock after you perform step 3 above, perform the
operation under “Hand Home Position Adjustment” (page E-39) to adjust it.
• If the digital display contents start to fl
abnormal magnetism has been detected. Move away from any potential source of strong magnetism
and try taking a reading again. If the problem occurs when you try again, continue to keep away from
the source of strong magnetism, perform bidirectional calibration, and then try taking a reading again.
For more information, refer to “To perform bidirectional calibration” (page E-57) and “Location” (page
E-60).
Digital Compass Readings
• After the fi
each second for up to 60 seconds. After that, the reading operation will stop automatically.
• The auto light switch is disabled during the 60 seconds that digital compass readings are being taken.
• The margin of error for the angle value and the direction indicator is ±10 degrees while the watch is
horizontal (in relation to the horizon). If the indicated direction is northwest (
NW
) and 315 degrees, for
example, the actual direction can be anywhere from 305 to 325 degrees.
• Note that taking a direction reading while the watch is not horizontal (in relation to the horizon) can
result in large direction reading error.
•
You can calibrate the bearing sensor if you suspect the direction reading is incorrect.
• Any ongoing direction reading operation is paused temporarily while the watch is performing an alert
operation (daily alarm, Hourly Time Signal, countdown timer alarm) or while illumination is turned on (by
pressing
L
). The direction reading operation resumes for its remaining duration after the operation
that caused it to pause is fi
• See “Digital Compass Precautions” (page E-60) for important information about taking direction readings.
Operation Guide 5371
