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Magnetic North and True
North
There are actually two types of north:
magnetic north and true north.
Magnetic north: North indicated by the needle
of a compass
True north: Direction to the North Pole
As shown in the illustration below, magnetic
north and true north are not the same.
Earth
Magnetic north
True north
Note
●
The north indicated on commercially
available maps is normally true north.
Digital Compass Reading
Precautions
Location During Use
Taking readings near sources of strong
magnetism can cause reading error. Keep the
watch away from the following types of items.
Permanent magnets (magnetic accessories,
etc.), metal objects, high-voltage wires, aerial
wires, electrical household appliances (TVs,
computers, cellphones, etc.)
●
Note that correct direction readings are not
possible indoors, especially inside of
reinforced concrete structures.
●
Accurate direction readings are not
possible in motor vehicles, on boats, on
aircraft, etc.
Storage Location
Exposure of the watch to magnetism can
affect the accuracy of digital compass
readings. Keep the watch away from the types
of items below.
Permanent magnets (magnetic accessories,
etc.), metal objects, electrical household
appliances (TVs, computers, cellphones, etc.)
Altitude Measurement
The watch takes altitude readings and
displays results based on air pressure
measurements taken by a built-in pressure
sensor.
Important!
●
The altitude readings displayed by the
watch are relative values that are
calculated based on barometric
pressure measured by the watch’s
pressure sensor. This means that
barometric pressure changes due to
weather can cause altitude readings
taken at the same location to be
different. Also note that the value
displayed by the watch may be
different from the actual elevation and/
or sea level elevation indicated for the
area where you are located. When
using the watch’s altimeter while
mountain climbing, it is recommended
that you regularly calibrate its readings
in accordance with local altitude
(elevation) indications.
l
Calibrating Altitude Readings
●
When using navigation while receiving
GPS signals, measured altimeter
values are automatically adjusted in
accordance with GPS signal data.
Note, however, that this may result in
some difference between the
measured value and the actual
altitude. Also note that the measured
altitude value adjustment operation
using GPS signal data may take a few
minutes. The adjustment operation
may take even longer, depending on
your current environment. Regular
manual adjustment of the measured
altitude value using locally available
information is recommended. The
watch will not use GPS signal data to
adjust measured altitude values for
one hour after you adjustment the
measured altitude value manually.
●
The altitude correction value and
barometric pressure changes may
result in display of a negative value.
●
Check the information below to find out
about how to minimize differences
between readings produced by the
watch, and values provided by local
altitude (elevation) indications.
l
Altitude Reading Precautions
Getting ready
Enter the Altimeter Mode.
l
Navigating Between Modes
l
Specifying Display Contents
●
Entering the Altimeter Mode starts altitude
readings.
Checking the Current
Altitude
Starting an altitude measurement operation
displays the altitude in your current location.
The watch takes altitude readings every
second for about the first three minutes. After
that, it takes readings according to the watch’s
auto measurement interval setting.
●
Check the information below to find out how
to configure the auto measurement interval.
l
Setting the Auto Measurement Interval
Note
●
To retrigger measurement, hold down
(A) for about one second.
●
Measurement range: -10,000 m to
10,000 m (-32,800 to 32,800 feet)
(Measurement unit: 1 meter (5 feet))
Note that calibrating altitude readings
will cause a change in the
measurement range.
●
[- - -] will appear for the measured value
if it is outside the allowable range.
Value Screen
①
②
Graph Screen
③
①
②
Operation Guide 3452
20
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