User`s guide

Chapter 5 - I/O Commands
DEFINE USER DATUM MESSAGE (@@Ap)
Applicability: M12+ and M12+ Timing receivers
The M12+ can accommodate one user defined datum stored as ID number 50. The Define User
Datum command allows the user to define the constants used for this datum.
A datum is defined by a semi-major axis, an inverse flattening constant, and an offset from the
center of mass of the earth, given as delta-X, delta-Y, and delta-Z
parameters.
If the user has not supplied the receiver with custom datum parameters, Datum 50 will contain
WGS-84 parameters, identical to those stored in the receiver's default datum, Datum 49.
Default value: WGS-84 parameters
Related command: Datum Select Message (@@Ao)
Legacy Code Compatibility: The @@Ap command has been implemented in an identical fashion
on virtually all Motorola Oncore receivers.
Motorola GPS Products - M12+ User's Guide Revision 6.X 09FEB05
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