CXM543 User’s Manual
Doc.# 6001-0015 Rev 1.2
Page 29
is 10, and use only magnetometer data if the weight is 0. The
degree to which accelerometer data is used increases gradually
with the specified weight. In actual use, this command would
rarely be used, as the default value of 5 works well for most
situations.
H?
Gives the hard iron data in use, the number of data points gathered,
the dimensionality, etc. as well as additional help.
HQ
Quit the present data collection, discarding all data gathered so far.
The correction, if any, resulting from the last HC command will
continue to be available and can be turned on or off with the HI
command.
HT
Toggle between 2D and 3D mode. Because the H2 and H3
commands automatically set the dimension, this would only be
used if a user wanted to use his own set of orientations, without
being prompted. Any data gathered is lost, and data acquisition is
restarted.
8.4
Three dimensional Correction
To determine a 3-dimensional offset, begin by typing “H3” followed by a
carriage return. The CXM543 will then prescribe a set of 6 orientations.
The prescribed orientations and their interpretation in up, down, front, back,
left side and right side are as follows (replies from the CXM543 are
enclosed in quotation marks “”):
"Place the sensor z axis down to start a 3D correction then type HP
if possible place the x axis toward north"
Any direction will do, but it should remain the same throughout the
procedure. This will be called “north” even though it may not be true north.
Type HP followed by a carriage return.
"Rotate 90 degrees about the y axis so the x axis points up then type HP"
Set the platform on its backside, with the sideways direction remaining
unchanged and the bottom facing north.
Type HP followed by a carriage return.
"Rotate 90 degrees about the y axis so the z axis points up then type HP”
Place the platform upside down, with the x-axis pointing south.
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