PNI FieldForce Trax - Manual (Page 50)

PNI Sensor Corporation DOC#1016505 r06
TRAX User Manual Page 46
kGetMagTruthMethod (frame ID 120
d
, 0X78)
This frame queries the setting of the Mag Truth Method. It has no payload.
kGetMagTruthMethodResp (frame ID 121
d
, 0X79)
This frame is the response of kGetMagTruthMethod and the payload is the same as
for kSetMagTruthMethod.
7.4.3 Saving Settings
kSave (frame ID 9
d
, 0X09)
This frame commands the TRAX to save internal configurations and user calibration
to non-volatile memory. Internal configurations and user calibration are restored on
power up. The frame has no payload. This is the ONLY command that causes the
device to save information to non-volatile memory.
kSaveDone (frame ID 16
d
, 0X10)
This frame is the response to kSave frame. The payload contains a UInt16 error code:
0 indicates no error; 1 indicates an error when attempting to save data to memory.
7.5 Measurement Commands
7.5.1 Setting the Reference Magnetic Field Criteria
Prior to operating the TRAX in AHRS mode it is necessary to establish the criteria for a
known distortion-free local field. This should be done with the TRAX installed in the
host system, as the distortion presented by the host system is constant and will be
compensated for by the TRAX algorithms.
Error Code
UInt16
Payload
MagTruthMethod
UInt8
Payload
MagTruthMethod Payload Value:
“1”: Standard
“2”: Tight
“3”: AutoMerge