Motorola M12 Oncore Betriebsanweisung Seite 127
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Chapter 5 - I/O Commands
REQUEST UTC/IONOSPHERIC DATA (@@Bp)
Motorola Binary Format
Request Current UTC/Ionospheric Data:
@@BpmC<CR><LF>
where:
m = mode 0 = output response once (polled)
1 = output response when either UTC or
ionospheric data changes
C = checksum
Message length: 8 bytes
Response to above command:
@@CoabcdefghAAAAaaaadtwWnDC<CR><LF>
where:
a, b, c, d, e, f, g, and h = Ionospheric Data (see ICD-GPS-200, Table 20-X for scale
factors)
a = α0 -128…+127 seconds
b = α1 -128…+127 seconds/semi-circle
c = α2 -128…+127 seconds/(semi-circle)
2
d = α3 -128…+127 seconds/(semi-circle)
3
e = β0 -128…+127 seconds
f = β1 -128…+127 seconds/(semi-circle)
g = β2 -128…+127 seconds/(semi-circle)
2
h = β3 -128…+127 seconds/(semi-circle)
3
AAAA, aaaa, d, t, w, and W = UTC Data (see ICD-GPS-200, Table 20-IX for scale
factors)
AAAA = A0 -2,147,483,648…+2,147,483,647 seconds
aaaa = A1 -8,388,608…+8,388,607 seconds/second
d = ∆t
LS
-128…+127 seconds
t = t
ot
0…602,112 seconds
w = WN
t
0…255 weeks
W = WN
LSF
0…255 weeks
n = DN 1…7 days
D = ∆t
LSF
-128…+127 seconds
C = checksum
Message length: 29 bytes
Motorola GPS Products - M12+ User's Guide Revision 6.X 09FEB05
119
- 12+ Timing Receiver Only) 43 4
- Chapter 1 – INTRODUCTION 9
- OVERVIEW 10
- PRODUCT HIGHLIGHTS 11
- APPLICATIONS 12
- How to Get Warranty Service 14
- Space Segment 16
- Ground Control Segment 16
- User Segment 16
- CHAPTER SUMMARY 19
- Memory Backup 21
- Active Antenna Configuration 25
- Main Power 26
- Receiver Module Installation 33
- RF Shielding 34
- Thermal Considerations 34
- Grounding Considerations 34
- PCB Mounting Hardware 35
- System Integration 37
- Motorola Binary Format 38
- NMEA Protocol Support 44
- Input/Output Processing Time 47
- DATA LATENCY 48
- Position Data Latency 49
- Velocity Data Latency 49
- Time Data Latency 49
- Measurement Epoch Timing 49
- OPERATIONAL CONSIDERATIONS 51
- Time to First Fix (TTFF) 52
- First Time On 52
- Initialization 52
- Shut Down 53
- Motorola HAWK Antenna 60
- Hawk Antenna Gain Pattern 62
- Motorola Part Numbers 65
- Antenna Placement 67
- Antenna Cable RF Connectors 69
- Motorola Timing2000 Antenna 70
- Timing2000 Antenna Mounting 73
- Environmental Tests 75
- Chapter 5 - I/O COMMANDS 77
- SATELLITE MASK ANGLE (@@Ag) 83
- @@ANxC<CR><LF> 89
- @@ANfC<CR><LF> 89
- DATUM SELECT COMMAND (@@Ao) 90
- @@AObC<CR><LF> 93
- @@APxC<CR><LF> 97
- @@APmC<CR><LF> 97
- @@AqxC<CR><LF> 99
- @@AqsC<CR><LF> 99
- @@AQxC<CR><LF> 101
- @@AQsC<CR><LF> 101
- @@ASxC<CR><LF> 105
- @@ASeC<CR><LF> 105
- @@AwxC<CR><LF> 107
- @@AwmC<CR><LF> 107
- @@BbmC<CR><LF> 113
- @@BdmC<CR><LF> 115
- ALMANAC DATA REQUEST (@@Be) 116
- @@BemC<CR><LF> 117
- EPHEMERIS DATA INPUT (@@Bf) 118
- @@BhmC<CR><LF> 121
- @@BjmC<CR><LF> 123
- @@BomC<CR><LF> 125
- @@BouC<CR><LF> 125
- @@BpmC<CR><LF> 127
- ALMANAC DATA INPUT (@@Cb) 128
- @@CkC<CR><LF> 131
- SET-TO-DEFAULTS (@@Cf) 133
- NMEA PROTOCOL SELECT (@@Ci) 134
- SWITCH I/O FORMAT (@@Ci) 135
- RECEIVER ID (@@Cj) 136
- @@EqmC<CR><LF> 143
- COMBINED TIME MESSAGE (@@Gb) 148
- 00 = positive 150
- 0…+23 150
- 0…59 150
- 1PPS CONTROL MESSAGE (@@Gc) 152
- @@GdxC<CR><LF> 155
- @@GdcC<CR>LF> 155
- @@GdpC<CR>LF> 155
- @@GexC<CR><LF> 157
- @@GetC<CR><LF> 157
- @@GfxxC<CR><LF> 159
- @@GfaaC<CR><LF> 159
- LEAP SECOND PENDING (@@Gj) 161
- VEHICLE ID (@@Gk) 162
- @@HarC<CR><LF> 165
- 0…250000 Hz 167
- 0 = UTC offset not decoded 167
- 0x00 = positive 168
- 0…23 168
- @@HbrC<CR><LF> 171
- @@HnrC<CR><LF> 175
- ><LF> 177
- @@IaC<CR><LF> 183
- @@IasssC<CR>LF> 183
- SYSTEM POWER-ON FAILURE 184
- @@SzcC<CR><LF> 185
- NMEA GPGGA MESSAGE 186
- GPGGA (NMEAGPS FIX DATA) 187
- GPZDA (NMEA TIME AND DATE) 200
- SWITCH TO BINARY 203
- APPENDIX 1 – GPS Terminology 205
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