Motorola M12 Oncore User's Guide download pdf (Page 118)

Chapter 5 - I/O Commands

EPHEMERIS DATA INPUT (@@Bf)

Applicability: M12+ positioning and timing receivers

This command will cause the receiver to accept satellite ephemeris data input via

communications port 1 (pin 2). The receiver keeps the ephemerides decoded from all satellites in

RAM, as long as backup voltage is applied to the receiver and the ephemerides are still valid (t-t

< 4 hours).

The input format is identical to the format output by the previous Oncore receivers

using the output ephemeris command. This allows the same ephemeris output file to be used by

the receiver for an ephemeris input file. The receiver echoes the input ephemeris data format

message so the user can validate the ephemeris data with the new user supplied ephemeris

upon completion of the receipt of a valid ephemeris.

Legacy Compatibility: The @@Bf message was used in an identical manner in virtually all

Motorola receivers.

Motorola GPS Products - M12+ User's Guide Revision 6.X 09FEB05

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Motorola M12 Oncore User's Guide Page 118