INTRODUCTION...................................................................................................... 34
THE NMEA 0183 COMMUNICATION INTERFACE...................................................... 35
NMEA 0183 MESSAGE FORMAT ........................................................................... 36
FIELD DEFINITIONS................................................................................................ 37
NMEA 0183 MESSAGE OPTIONS........................................................................... 39
NMEA 0183 MESSAGE FORMATS ......................................................................... 40
GGA-GPS FIX DATA............................................................................................ 40
GSA - GPS DOP AND ACTIVE SATELLITES............................................................. 40
GSV - GPS SATELLITES IN VIEW ........................................................................... 41
RMC - RECOMMENDED MINIMUM SPECIFIC GPS/TRANSIT DATA.............................. 42
VTG - TRACK MADE GOOD AND GROUND SPEED .................................................... 43
EXCEPTION BEHAVIOR .......................................................................................... 43
APPENDIX B: HIPPO....................................................................... 44 HIPPO PROTOCOL RULES.................................................................................... 45
GENERAL MESSAGE STRUCTURE RULES................................................................. 46
REPORT MESSAGE STRUCTURE (MODULE TO HOST) ............................................... 47
COMMAND MESSAGE STRUCTURE (HOST TO MODULE)............................................ 48
CHAINED MESSAGES............................................................................................. 48
POST-FORMATTING: HCC STUFFING BEFORE TRANSMISSION ..................................49
PRE-PARSING: HCC UNSTUFFING AFTER RECEPTION .............................................49
COMMAND MESSAGES .......................................................................................... 50
SET CLASS........................................................................................................... 50
QUERY CLASS...................................................................................................... 52
SYSTEM CLASS..................................................................................................... 54
Reset Receiver........................................................................................................................................54
REPORT CLASS.................................................................................................... 55
REPORT MESSAGE CODE ASSIGNMENT .................................................................. 56
SYSTEM REPORT PACKETS.................................................................................... 59
0x10: Acknowledge / Error Response to Command Packets.................................................................59