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LX7007 pro IGC V1.0 Apr. 2005
Page 67
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6.1 LX 7007 PRO IGC - Compass Module
6.1.1 General
The compass module is an electronic compass (magnetic field sensor), which was developed for the LX 7007 PRO
IGC. The LX 7007 PRO IGC recognizes the compass module automatically when it is coupled onto the 485 bus.
The only configuration settings needed relate to the compensation procedure. An indication that the compass
module is connected is the appearance of magnetic HDG reading on navigation page 3 of the LX 7007 PRO IGC.
The compass module not only permits the display of magnetic heading but also permits the calculation of the wind
vector in straight flight. The wind vector is calculated using the triangle of velocities method, where the vectors
of ground speed with track, TAS with compass heading, and the wind vector form a triangle of velocities.
Heading
Wind
TAS and HDG
Groundspeed and TRK
Ma
g
net field senso
r
LX 485 Bus