25
26
28
27
To Calibrate the compass
IMPORTANT
: If the watch has not been calibrated,
the
direction reading may be inaccurate.
- Check the 'Magnetic Declination at Major Cities' section
to get the magnetic declination of the city which close to
your current location, because such angle will be
i n p u t t e d i n t o t h e H a n d H e l d Tr a c k M a s t e r d u r i n g t h e
c a l i b r a t i o n .
- Perform the compass calibration
on the following
conditions:
1) when the HandHeld TrackMaster is used the first time,
2) when the '
DIST'
indicator is flashing,
3) the battery has been replaced, and
4) use the compass in a location where is apart from the
place in which the compass had been calibrated.
To Calibrate the Compass
- Press and hold the [mode] button for 2 seconds to
start the Magnetic Declination Setting, in the Compass
Mode.
- The '
DEC
' indicator will be appeared on the 1st row of
the display. The digit will start flashing, press the
[start/stop] button to change the angle (from -90 to
90) until the desire magnetic declination appeared.
Example 1:
- Compensate the magnetic declination for Wellington in
New Zealand (22-E), select +22 in the magnetic
declination setting.
Example 2:
- Compensate the magnetic declination in Boston in the
USA (16-W), select -16 in the magnetic declination
setting.
- Press the [mode] button to go to the Calibration
'Rotation' Mode, the EL back light will turn on
automatically for a second. At the same time, the '
CAL
'
indicator will be appeared on 1st row of the display and
the bearing indicators start to move.
- When the EL back light is off, hold the HandHeld
TrackMaster on a flat surface which is parallel to the
horizon, then rotate the HandHeld TrackMaster clockwise
at the rate as the bearing indicators' moving for 2 turns.
The rotation should be completed in a slow and steady way
.
- When the turning is completed, press the [mode] button
to return to Compass Mode otherwise the Calibration
'Rotation' Mode will return to Compass Mode after 1
minute.
11.5 Compass Mode
- Before Calibrate the Compass
11.6 Compass Mode
- Calibrating the Compass
finish
start
Compass
Mode
Calibration
'Rotation' Mode
Calibration Sequence
Calibration
'Rotation' Mode
Magnetic
Declination
Setting Mode
The Direction of an Object
- The direction of an object from a point is specified in
either compass points or digital bearing directions.
- The HandHeld TrackMaster provides both compass
points or digital bearing directions.
The Compass Points
- The compass points are North, Northeast, East.
Southeast, South, Southwest, West and Northwest.
- For example, in the figure on the left, the compass
points of object B from point A is East. The compass
points of object C from point A is Southeast. The
compass points of object D from point A is Northwest.
The Digital Bearing
- The digital bearing direction of an object is defined as
t h e
a n g u l a r d i ff e r e n c e b e t w e e n N o r t h a n d t h e
o b j e c t . ( A s s u m i n g t h a t 0 f o r N o r t h , a n d t h e
measuring range is from 0 to 359 )
- For example, in the figure on the left, the digital bearing
direction of object B from point A is 90 . The digital
bearing direction of object C from point A is 135 . T h e
digital bearing direction of object D from point A i s
315 .
11.7 Compass Mode
- Compass Points and Digital Bearings
11.8 Compass Mode
- Compass Points versus Digital Bearings
object B
Bearing Directions
(Digital)
Compass Points versus Digital Bearings
object C
object D
angular
difference
90
135
315
point
A
0
0
object B
object C
Bearing Directions
(Compass Points)
object D
point A
N
E
SE
NW
N
hold
[mode]
[mode]
[compass]
Digital Bearing Directions
348.75
to 11.25
11.25
to 33.75
33.75
to 56.25
56.25
to 78.75
78.75
to 101.25
101.25
to 123.75
123.75
to 146.25
146.25
to 168.75
168.75
to 191.25
191.25
to 213.75
213.75
to 236.25
236.25
to 258.75
258.75
to 281.25
281.25
to 303.75
303.75
to 326.25
326.25
to 348.75
Marks
N
NNE
NE
ENE
E
ESE
SE
SSE
S
SSW
SW
WSW
W
WNW
NW
NNW
Compass Points
North
North Northeast
Northeast
East Northeast
East
East Southeast
Southeast
South Southeast
South
South Southwest
Southwest
West Southwest
West
West Northwest
Northwest
North Northwest
[mode]
1 minute
