Motorola M12 Oncore User's Guide download pdf (Page 4)

Automatic Site Survey (M12+ Timing Receiver Only) 24

100PPS Output (M12+ Timing Receiver Only) 24

Mean Time Between Failure (MTBF) 25

Receiver Module Installation 25

Electrostatic Precautions 25

Electromagnetic Considerations 26

RF Shielding 26

Thermal Considerations 26

Grounding Considerations 26

PCB Mounting Hardware 27

System Integration 29

Interface Protocols 29

Serial Input/Output 29

Motorola Binary Format 30

Exclusive-Or (XOR) Checksum creation 34

Millisecond to Degree Conversion 35

NMEA Protocol Support 36

NMEA Commands to the Receiver 36

RTCM Differential GPS Support 38

DATA LATENCY 40

Position Data Latency 41

Velocity Data Latency 41

Time Data Latency 41

ONE PULSE PER SECOND (1PPS) TIMING 41

Measurement Epoch Timing 41

Output Data Timing Relative To Measurement Epoch 42

1PPS Cable Delay Correction and 1PPS Offset (M12+ Timing Receiver Only) 43

OPERATIONAL CONSIDERATIONS 43

Time to First Fix (TTFF) 44

First Time On 44

Initialization 44

Shut Down 45

Received Carrier to Noise Density Ratio (C/No) 46

SETTING UP RECEIVERS FOR SPECIFIC APPLICATIONS 47

M12+ as a Standard Autonomous Positioning Receiver 47

M12+ as a Positioning Receiver Using Differential Corrections 47

M12+ as a Differential Base Station 48

M12+ as a Precision Timing Receiver 48

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

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Motorola M12 Oncore User's Guide Page 4