Operation Guide 3259
E-32
• Dur
direc
C
whil
the di
• Pressing
E
whil
Bea
Using the Digital Compass While Mountain Climbing or Hiking
This section provides three practical applications for using the watch’s built-in digital compass.
• Setting a map and fi
Having an idea of your current location is important when mountain climbing or hiking. To do this, you
need to “set the map”, which means to align the map so the directions indicated on it are aligned with
the actual directions of your location. Basically what you are doing is aligning north on the map with
north as indicated by the watch.
• Finding the bearing to an objective
• Determining the direction angle to an objective on a map and heading in that direction
E-33
To set a map and fi
1. With the watch on your wrist, position it so the face is horizontal.
2. While in the Timekeeping Mode or in any of the sensor modes, press
C
to take a compass reading.
• The re
3. Rotate the map without moving the watch so the northerly direction
indicated on the map matches north as indicated by the watch.
• If the wa
map’s mag
bee
the m
“Ca
• This will position
4. Determine your location as you check the geographic contours around
you.
N
N
North indicated
on the map
North indicated by
north pointer
N
N
North indicated
on the map
North indicated by
north pointer
E-34
To fi
1. Set the map so its northerly indication is aligned with north as indicated
by the watch, and determine your current location.
• Se
info
2. Set the map so the direction you want to travel on the map is pointed
straight in front of you.
3. With the watch on your wrist, position it so the face is horizontal.
4. While in the Timekeeping Mode or in any of the sensor modes, press
C
to take a compass reading.
• The re
5. Still holding the map in front of you, turn your body until north as
indicated by the watch and the northerly direction on the map are
aligned.
• Thi
so th
N
N
Objective
Current
location
12 o’clock
position
N
N
Objective
Current
location
12 o’clock
position
E-35
To determine the direction angle to an objective on a map and head in that direction (Bearing Memory)
1. Set the map so its northerly indication is aligned with north as indicated
by the watch, and determine your current location.
• Se
info
2. As shown in the illustration to the left, change your position so you (and
the 12 o’clock position of the watch) are pointed in the direction of
objective, while keeping the northerly direction indicated on the map
aligned with north as indicated by the watch.
• If you fi
ever
pos
abo
the map.
N
N
Objective
Current
location
12 o’clock
position
N
N
Objective
Current
location
12 o’clock
position
E-36
3. While in the Timekeeping Mode or in any of the sensor modes, press
C
to take a compass reading.
4. While direction angle readings are in progress, press
E
to record the
currently displayed direction in Bearing Memory.
• The d
will re
• T
Bearing Memor
C
.
• Se
5. Now you can advance while monitoring the Bearing Memory pointer to
ensure that it remains in the 12 o’clock position.
• Pressing
E
whil
Bea
Me
reading in
Note
• When mountain climbing or hiking, conditions or geographic
con
line. I
the objectiv
12 o’clock position
Bearing memory
pointer
North
pointer
Direction angle of
current reading
Bearing memory
direction angle value
12 o’clock position
Bearing memory
pointer
North
pointer
Direction angle of
current reading
Bearing memory
direction angle value
E-37
Digital Compass Precautions
This watch features a built-in magnetic bearing sensor that detects terrestrial magnetism. This means that
north indicated by this watch is magnetic north, which is somewhat different from true polar north. The
magnetic north pole is located in northern Canada, while the magnetic south pole is in southern Australia.
Note that the difference between magnetic north and true north as measured with all magnetic compasses
tends to be greater as one gets closer to either of the magnetic poles. You should also remember that
some maps indicate true north (instead of magnetic north), and so you should make allowances when
using such maps with this watch.
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 E-28).
E-38
Taking Barometric Pressure and Temperature Readings
This watch uses a pressure sensor to measure air pressure (barometric pressure) and a temperature
sensor to measure temperature.
To enter and exit the Barometer/Thermometer Mode
1. While in the Timekeeping Mode or in any of the sensor modes, press
B
to enter the Barometer/Thermometer Mode.
• BARO wil
pres
mea
seconds.
• Af
B
, the watc
for th
2. Press
D
to return to the Timekeeping Mode.
• The wa
do no
Barometer
To take barometric pressure and temperature readings
While in the Timekeeping Mode or in any of the sensor modes, press
B
.
• This starts barometric pressure and temperature measurements automatically.
• You also can perform a barometric pressure and temperature measurement at any time by pressing
B
in the Barometer/Thermometer Mode.
• The barometric pressure change indicator is displayed if there has been signifi
barometric pressure. For more information, see “Barometric Pressure Change Indicator” (page E-42).
• It can take up to four or fi
Barometer/Thermometer Mode.
Barometric
pressure graph
Barometric
pressure
change
indicator
Barometric
pressure
Pressure
differential
pointer
Temperature
Barometric
pressure graph
Barometric
pressure
change
indicator
Barometric
pressure
Pressure
differential
pointer
Temperature
E-39
Barometric Pressure
• Barometric pressure is displayed in units of 1 hPa (or 0.05 inHg).
•
The displayed barometric pressure value changes to
- - -
if a measured
barometric pressure falls outside the range of 260 hPa to 1,100 hPa (7.65
inHg to 32.45 inHg). The barometric pressure value will reappear as
soon as the measured barometric pressure is within the allowable range.
Temperature
• Temperature is displayed in units of 0.1°C (or 0.2°F).
• The displayed temperature value changes to
- - -
°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 reappear as soon as
the measured temperature is within the allowable range.
Display Units
You can select either hectopascals (hPa) or inchesHg (inHg) as the display unit for the measured
barometric pressure, and Celsius (°C) or Fahrenheit (°F) as the display unit for the measured temperature
value. See “To specify temperature, barometric pressure, and altitude units” (page E-61).
Barometric Pressure Graph
Barometric pressure indicates changes in the atmosphere. By monitoring
these changes you can predict the weather with reasonable accuracy.
This watch takes barometric pressure measurements automatically every
two hours (at the 30th minute of every even numbered hour).
Measurement results are used to produce barometric pressure graph and
barometric pressure differential pointer readings.
Temperature
Barometric pressure
change indicator
Barometric
pressure
Temperature
Barometric pressure
change indicator
Barometric
pressure
Barometric pressure graph
