Tissot 141_EN5/14 - Manual (Page 12)

www.tissot.ch 141_EN 12/14
T-TOUCH EXPERT
*
Azimuth explanations
In azimuth mode, you T-TOUCH indicates the azimuth (heading) that you need
to turn to.
Azimuth explanations
The azimuth is the horizontal angle
between the direction of an object
and True North. The azimuth is
measured from north in degrees
from 0° to 359° (e.g.: East = 90°).
In azimuth mode, the T-TOUCH
emits a beep and visual signal when
the 6-12 o’clock axis of the watch
is aligned with the heading set.
12 o'clock represents the heading
given by the azimuth relative to True North.
Note 1
For a correct indication of North, it is extremely important to hold the watch as
level as possible.
Note 2
The compass function, like any other compass,
should not be used near a metal or magnetic mass.
In case of doubt, you can recalibrate your compass.
Note 3
The rotating bezel, graduated from 0° to 359°,
provides another method for determining the azimuth.
Characteristics of function
Accuracy: ± 8°
Resolution: 2°
Heading
Compass
In compass mode, your T-TOUCH indicates
the True North Pole, factoring in magnetic
declination.
Compass explanations
The vertical lines (meridians) on the Earth converge at the True North Pole
(Ng), indicating its direction. The hand of a conventional compass indicates
the direction of the Magnetic North Pole (Nm).
The angle (α) between these two directions Ng
and Nm is known as magnetic declination. The
magnetic declination value depends on your
location on Earth. Furthermore, the Magnetic
North Pole is constantly moving. So the magnetic
declination value also depends on the date. If the
correct magnetic declination value (for the loca-
tion and date) is set (see the setting procedure on
page 11), the minutes hand of your T-TOUCH
will point to True North (Ng). If the magnetic
declination is set to 0, your T-TOUCH will point to Magnetic north (Nm). The
magnetic declination values and dates are indicated on topographic charts,
or can be found using special software available on the Internet.
For Switzerland: http://www-geol.unine.ch/geomagnetisme/Representation.htm
For the whole world: http://www.ngdc.noaa.gov/seg/geomag/magfield.shtml
GLOSSARY > COMPASS
Heading
Azimuth
315 o
Azimuth
315 o
SETTING > COMPASS > COMPASS CALIBRATION
Compass
Calibration display
Activate calibration mode
– glass deactivated
during calibration
b) Calibration failed
– repeat calibration
Back to compass display
Turn the watch more than a complete revolution on
a horizontal surface (e.g. a table) in an environment
free from magnetic interference, at a rotation speed
of around 30° per second.
Total time: 20 seconds maximum
a) Calibration successful –
data stored
2 sec.