CXM543 User’s Manual
Doc.# 6001-0015 Rev 1.2
Page 30
Type HP followed by a carriage return.
"Rotate 90 degrees about the y axis so the x axis points down then type HP"
The front should face down and the top should face north.
Type HP followed by a carriage return.
"Rotate 90 degrees about the z axis so the y axis points up then type HP"
Rest the platform on the left side, with the top facing north.
Type HP followed by a carriage return.
"Rotate 180 degrees about the z axis so the y axis points down then type
HP"
Rest on the right side, with the top facing north.
Type HP followed by a carriage return.
At this time, the CXM543 will automatically calculate the hard iron offsets
and display them. Also displayed are a set of parameters indicating the
quality of the fit. If the residuals without correction are substantially larger
than those with corrections, this indicates that the hard iron correction
would improve orientation accuracy. The hard iron correction can be turned
on by typing HI followed by a carriage return.
8.5
Two dimensional Correction
To determine a two dimensional correction, begin by typing “H2” followed
by a carriage return. The CXM543 will then prescribe a set of 4
orientations. The top of the platform will always point up, so we only need
to specify the direction of the front.
The prescribed orientations and their interpretation in up, down, front, back,
left side and right side are:
"Place the sensor z-axis down to start a 2D correction then type HP";
Any initial 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 clockwise about the z axis then press HP”
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