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TRISTAR25 GPS Receiver Module
User’s Guide
Page 1: ...1 TRISTAR25 GPS Receiver Module User s Guide...
Page 2: ...Deluo Electronics http www deluo com 2 Manual Revision History Revision Date Update Summary Issue A December 2002 Initial release Issue B February 2003 Add pins electrical characteristics...
Page 3: ...ning System Fix Data 13 4 1 3 GLL Geographic Position Latitude Longitude 14 4 1 4 GSA GNSS DOP and Active Satellites 15 4 1 5 GSV GNSS Satellites in View 16 4 1 6 RMC Recommended Minimum Specific GNSS...
Page 4: ...inary Output Message 0x08 Measurement Data 28 4 3 DATA LOGGING 29 4 3 1 Data Logging Input Messages 29 4 3 1 1 LogConfig Set 29 4 3 1 2 LogData Dump 30 4 3 1 3 LogData Erase 30 4 3 1 4 LogConfig Read...
Page 5: ...d to withstand harsh operating environments however it should be used inside an enclosure as a part of the application product designed by the system integrator 1 2 Features The TISTAR25 GPS receiver...
Page 6: ...e acquisition performance can be improved significantly if the host initializes the receiver with a rough estimate of time and user position As soon as GPS signal is acquired and tracked the TISTAR25...
Page 7: ...1 RF Connector The RF connector is a 50 ohm straight MCX snap on coaxial RF jack receptacle 3 2 Interface Connector There are three interface connectors the first is a 10 pin Molex connector the seco...
Page 8: ...om 8 3 3 Mechanical Dimensions and Interface Connector Unit mil 1780 734 100 40 100 1225 985 78 74 50 150 RF 28 197 43 459 239 Top View 420 324 84 84 18 62 992 31 496 364 261 Bottom View 290 120 RF Sh...
Page 9: ...Input 3 3V 10 ANT PWR Input The following is a functional description of the pins on the 10 pin interface connector Pin 1 TXD0 Serial port output 1 GPS navigation output Pin 2 RXD0 Serial port input...
Page 10: ...escription of the pins on the 16 pin interface connector Pin 1 PIO1 Reserved I O port 1 from CPU Pin 2 PIO10 Reserved I O port 10 from CPU Pin 3 PIO11 Reserved I O port 11 from CPU Pin 4 TXD0 Serial p...
Page 11: ...uracy of the one pulse per second output is maintained only when the receiver has valid position fix 3 6 RTCM Differential Data By using differential GPS DGPS correction data in RTCM SC 104 format wit...
Page 12: ...s 1 stop bit and none parity 4 1 NMEA OUTPUT MESSAGE SPECIFICATION The TISTAR25 supports NMEA 0183 output format as defined by the National Marine Electronics Association http www nmea org The current...
Page 13: ...r S south 5 Longitude 12100 1399 dddmm mmmm degree minute decimal minute Leading zeros transmitted 6 E W Hemisphere Indicator E a E east or W west 7 GPS Position Fix Indicator 1 x 0 no position fix or...
Page 14: ...e 0x8E and 0x8F Field Name Example Unit Description 1 Message ID GPGLL GLL protocol header 2 Latitude 2446 5311 ddmm mmmm degree minute decimal minute Leading zeros transmitted 3 N S Hemisphere Indica...
Page 15: ...ame Example Unit Description 1 Message ID GPGSA GSA protocol header 2 Manual or Automatic Mode A x A automatic allowed to switch 2D 3D automatically M manual forced to operate in 2D or 3D mode 3 Navig...
Page 16: ...er 2 Total Messages 3 x 1 3 3 Message Number 1 x 1 3 4 Total Number of Satellites In View 11 xx 0 12 Leading zeros transmitted 5 Satellite Number 1 27 xx SV1 ID number 01 32 Leading zeros transmitted...
Page 17: ...ng zeros transmitted 3 Status A x A Data valid V Navigation receiver warning 4 Latitude 2446 5254 ddmm mmmm degree minute decimal minute Leading zeros transmitted 5 N S hemisphere indicator N a N nort...
Page 18: ...ple Unit Description 1 Message ID GPVTG VTG protocol header 2 Heading 000 0 degree xxx x Heading of the receiver when moving Leading zeros transmitted 3 True T Indicates true heading 4 Heading 003 3 d...
Page 19: ...n Byte 3 equals DLE 0x10 DLE 0x10 is sent out as the 4th byte of the message header otherwise it is not sent Message Body When DLE 0x10 is encountered in the message body it is repeated The EverMore B...
Page 20: ...ulated by summing all bytes in the Message Body and taking the sum modulo 256 Byte 2 when Byte 1 equals DLE 0x10 DLE 0x10 is sent out as the 2nd byte of the message footer otherwise it is not sent Byt...
Page 21: ...Latitude 900 Signed 16bit integer 1 10 degree 10 11 Longitude 1800 Signed 16bit integer 1 10 degree 12 13 Altitude 1000 18000 Signed 16bit integer meter 14 15 Datum ID 0 65535 Unsigned 16bit integer...
Page 22: ...are used to set accuracy limits on position output If the selected DOP mask is exceeded new position velocity time solution is not calculated and last valid solution is output instead When DOP Select...
Page 23: ...urement is taken and navigation solution is computed every n seconds When power saving mode is selected the RF GPSBBP On Time field is also referenced Format Byte Contents Range Size Scale Unit 1 Mess...
Page 24: ...e Unit 1 Message ID 0x94 Unsigned byte 2 Differential GPS Control 0 disable 1 enable SBAS 0 1 Unsigned byte 3 4 Reserved 0 Unsigned 16bit integer 5 Set the first SBAS satellite to be searched 0 5 Unsi...
Page 25: ...byte 2 3 GPS week 0 65535 Unsigned 16bit integer week 4 7 GPS tow 0 60479900 Unsigned 32bit integer 1 100 sec 8 11 Position X 2 31 Signed 32bit integer meter 12 15 Position Y 2 31 Signed 32bit intege...
Page 26: ...Message ID 0x04 Unsigned byte 2 3 GPS week 0 65535 Unsigned 16bit integer week 4 7 GPS tow 0 60479900 Unsigned 32bit integer 1 100 sec 8 GDOP 0 255 Unsigned byte 0 1 9 PDOP 0 255 Unsigned byte 0 1 10...
Page 27: ...iew 0 12 Unsigned byte Channel Data 7 bytes per channel N 1 2 3 n for the n visible satellites Byte Contents Range Size Unit 7N 2 Channel 1 12 Unsigned byte 7N 3 SV ID 1 32 Unsigned byte 7N 4 7N 5 Azi...
Page 28: ...Unsigned byte Channel Data 14 bytes per channel Repeated for each in view satellites Byte Contents Range Size Unit 1 2 Channel SV Elevation bit 0 3 1 12 bit 4 8 1 31 bit 9 15 0 90 Unsigned byte Unsign...
Page 29: ...configures the logging function Byte Contents Range Size Unit 1 Message ID 0x81 Unsigned byte 2 Command LogConfig 0x10 Unsigned byte 3 4 Configuration 1 enable data logging 0 disable data logging Unsi...
Page 30: ...binary data on off When bit7 of byte 4 is set logged data is sent in binary format otherwise it is sent in NMEA format Bit0 bit3 of byte 4 specifies which NMEA messages to be sent 4 3 1 3 LogData Eras...
Page 31: ...12 15 EFEX_Y 2 31 Signed 32bit integer meter 16 19 EFEC_Z 2 31 Signed 32bit integer meter mode Navigation mode 0 2D 1 3D DGPS 0 no DGPS used 1 used DGPS correction velocity 9 0 velocity in m s range...
Page 32: ...to output the logged data either in NMEA format or in binary LogData message format according to the format requested in the previously issued LogData Dump command until all logged data dumped 3 Anoth...
Page 33: ...143 90 294 Clarke 1880 MEAN FOR Botswana Lesotho Malawi Swaziland Zaire Zambia Zimbabwe 20 Arc 1950 134 105 295 Clarke 1880 Swaziland 21 Arc 1950 169 19 278 Clarke 1880 Zaire 22 Arc 1950 147 74 283 Cl...
Page 34: ...l 1924 Egypt 57 European 1950 86 96 120 International 1924 England Channel Islands Scotland Shetland Islands 58 European 1950 86 96 120 International 1924 England Ireland Scotland Shetland Islands 59...
Page 35: ...ternational 1924 Diego Garcia 94 Johnston Island 1961 189 79 202 International 1924 Johnston Island 95 Kandawala 97 787 86 Everest India 1830 Sri Lanka 96 Kerguelen Island 1949 145 187 103 Internation...
Page 36: ...ca El Salvador Guatemala Honduras Nicaragua 132 North American 1927 10 158 187 Clarke 1866 MEAN FOR Canada 133 North American 1927 8 160 176 Clarke 1866 MEAN FOR CONUS 134 North American 1927 9 161 17...
Page 37: ...24 Colombia 166 Provisional South American 1956 278 171 367 International 1924 Ecuador 167 Provisional South American 1956 298 159 369 International 1924 Guyana 168 Provisional South American 1956 288...
Page 38: ...cuador Guyana Paraguay Peru Trinidad Tobago Venezuela 201 South American 1969 61 2 33 South American 1969 Paraguay 202 South American 1969 58 0 44 South American 1969 Peru 203 South American 1969 45 1...
Page 39: ...8249 145 293 465 Everest India 1830 6377276 345 300 8017 Everest Sabah Sarawak 6377298 556 300 8017 Everest India 1956 6377301 243 300 8017 Everest Malaysia 1969 6377295 664 300 8017 Everest Malay Sin...
Page 40: ...ing factory preset default values Datum 001 WGS 84 NMEA Enable Switch GGA ON GLL OFF GSA ON GSV ON RMC ON VTG OFF Checksum ON EMT Private Message OFF Baud Rate 4800 Baud Elevation Mask 5 degrees DOP M...
