PNI CompassPoint V2Xe - Manual (Page 16)

V2Xe User Manual – May 2012 Page 14
the “n” number elements. Damping is only applied to the heading data. This is
not a running average but instead an average of the most recent “n” number with
the oldest being dropped in each successive heading calculation.
kGetConfig (frame ID 0x07)
This frame queries the TCM for the current internal configuration value. The payload
contains the configuration ID requested.
kGetConfigResp (frame ID 0x08)
The response to kGetConfig is given below. The payload contains the configuration
ID and value.
Example: The payload for a request to get the declination angle would look like:
kSave (frame ID 0x09)
This frame commands the V2Xe 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.
5.5 Calibration
Sources of magnetic distortion permanently positioned near the V2Xe in the user’s system
will distort Earth’s magnetic field and should be compensated for with a user calibration.
Examples of such sources include ferrous metals and alloys (ex. iron, nickel, steel, etc.),
batteries, audio speakers, current-carrying wires, and electric motors. It is expected the
sources of magnetic distortion remain fixed relative to the V2Xe’s position within the host
system.
0x01
Declination
Degrees (Float32)
10.0
Declination ID
Payload
Config ID
ID Specific
Value
UInt8
Payload
Config ID
UInt8
Payload