EM-406 User Guide
Contents
1. 07 1 0 9 0 M 0000 18 Table B 2 GGA Data Format Name Example Units Description Message ID GPGGA GGA protocol header UTC Time 161229 487 hhmmss sss Latitude 3723 2475 ddmm mmmm N S Indicator N N north or S south Longitude 12158 3416 dddmm mmmm E W Indicator W E east or W west Position Fix Indicator 1 See Table B 3 Satellites Used 07 Range 0 to 12 HDOP 1 0 Horizontal Dilution of Precision MSL Altitude 9 0 meters Units M meters Geoid Separation meters Units M meters Age of Diff Corr second Null fields when DGPS is not used Diff Ref Station ID _ 0000 Checksum 18 lt CR gt lt LF gt End of message termination SiRF Technology Inc does not support geoid corrections Values are WGS84 ellipsoid heights Table B 3 Position Fix Indicator Value Description Fix not available or invalid GPS SPS Mode fix valid Differential GPS SPS Mode fix valid w N fe GPS PPS Mode fix valid Page 5 of 5 EM406 081705 ace rel GLL Geographic Position Latitude Longitude Table B 4 contains the values for the following example GPGLL 3723 2475 N 12158 3416 W 161229 487 A 2C Table B 4 GLL Data Format Name Example Units Description Message ID GPGLL GLL protocol header Latitude 3723 2475 ddmm mmmm N S Indicator2. Available from www dpcav com amp AJ GlobalSat DPC eAV wok by Wireless Digital Products Company EM 406 GPS RECEIVER ENGINE BOARD PRODUCT GUIDE GlobalSat Technology Corporation 16 No 186 Chien 1 Road 235Chung Ho City Taipei Hsien Taiwan R O C www globalsat com tw USGlobalISat Inc USA Sales 1308 John Reed Court City of Industry CA 91745 www usglobalsat com Page 1 of 5 EM406 081705 VA GlobalSat Wired by Wireless Features SiRF star I high performance GPS Chip Set Very high sensitivity Tracking Sensitivity 159 dBm Extremely fast TTFF Time To First Fix at low signal level Support NMEA 0183 data protocol Built in SuperCap to reserve system data for rapid satellite acquisition Built in patch antenna LED indicator for GPS fix or not fix LEDOFF Receiver switch off LED ON No fixed Signal searching LED Flashing Position Fixed Specification General Chipset SiRF Star MI Frequency L1 1575 42 MHz C A code 1 023 MHz chip rate Channels 20 channel all in view tracking Sensitivity 159 dBm Accuracy Position 10 meters 2D RMS 5 meters 2D RMS WAAS enabled Velocity 0 1 m s Time lus synchronized to GPS time Datum Default WGS 84 Acquisition Time Reacquisition 0 1 sec average Hot start 1 sec average Warm start 38 sec average Cold start 42 sec average Page 2 of 5 EM406 081705 VA GlobalSat Wired by Wireless Dynamic Conditions Altitude Velocity Acceler
3. ation Jerk Power Main power input Power consumption Protocol Electrical level Baud rate Output message Physical Characteristics Dimension Operating temperature 18 000 meters 60 000 feet max 515 meters second 1000 knots max Less than 4g 20m sec 3 4 5V 6 5V DC input 70mA TTL level Output voltage level OV 2 85V 4 800 bps NMEA 0183 GGA GSA GSV RMC VTG GLL 30mm 30mm 10 5mm 40 C to 85 C Page 3 of 5 EM406 081705 VA GlobalSat y prt by Wireless Pin Assignment 1 GND NOTE Pin 1 is on far right 2 VIN 654321 3 RX 4 TX pee ee PCB 5 GND 6 Not Used e 3 00 eS 2 0 Pin description VIN DC power input This is the main DC supply for a 4 5V 6 5 DC input power TX This is the main transmits channel for outputting navigation and measurement data to user s navigation software or user written software RX This is the main receive channel for receiving software commands to the engine board from SiRFdemo software or from user written software GND GND provides the ground for the engine board Connect all grounds All product specifications subject to change without notice Page 4 of 5 EM406 081705 VA GlobalSat Wired by Wireless SOFTWARE COMMAND NMEA Output Command GGA Global Positioning System Fixed Data Table B 2 contains the values for the following example GPGGA 161229 487 3723 2475 N 12158 3416 W 1
4. l course over ground data are geodetic WGS48 directions Page 7 of 7 EM406 081705 VA GlobalSat Wired by Wireless VTG Course Over Ground and Ground Speed GPVTG 309 62 T M 0 13 N 0 2 K 6E Name Example Units Description Message ID GPVTG VTG protocol header Course 309 62 degrees Measured heading Reference T True Course degrees Measured heading Reference M Magnetic Speed 0 13 knots Measured horizontal speed Units N Knots Speed 0 2 Km hr Measured horizontal speed Units K Kilometers per hour Checksum 6E lt CR gt lt LF gt End of message termination Page 8 of 8 EM406 081705
5. n N north or S south Longitude 12158 3416 dddmm mmmm E W Indicator W E east or W west UTC Position 161229 487 hhmmss sss Status A A data valid or V data not valid Checksum 2C lt CR gt lt LF gt End of message termination GSA GNSS DOP and Active Satellites Table B 5 contains the values for the following example GPGSA A 3 07 02 26 27 09 04 15 1 8 1 0 1 5 33 Table B 5 GSA Data Format Name Example Units Description Message ID GPGSA GSA protocol header Model A See Table B 6 Mode2 3 See Table B 7 Satellite Used 07 Sv on Channel 1 Satellite Used 02 Sv on Channel 2 Satellite Used Sv on Channel 12 PDOP 1 8 Position dilution of Precision HDOP 1 0 Horizontal dilution of Precision VDOP 1 5 Vertical dilution of Precision Checksum 33 lt CR gt lt LF gt End of message termination l Satellite used in solution Table B 6 Mode1 Value Description M Manual forced to operate in 2D or 3D mode A 2Dautomatic allowed to automatically switch 2D 3D Table B 7 Mode 2 Value Description 1 Fix Not Available 2 2D 3 3D Page 6 of 6 EM406 081705 VA GlobalSat Wired by Wireless GSV GNSS Satellites in View Table B 8 contains the values for the following example GPGSV 2 1 07 07 79 048 42 02 51 062 43 26 36 256 42 27 27 138 42 71 GPGSV 2 2 07 09 23 313 42 04 19 159 41 15 12 041 42 41 Table B 8 GSV Data Format Name Example Descripti
6. on Message ID GPGSV GSV protocol header Number of Messages _ 2 Range to 3 Message Number 1 Range to 3 Satellites in View 07 Satellite ID 07 Channel 1 Range 1 to 32 Elevation 79 degrees _ Channel 1 Maximum90 Azimuth 048 degrees Channel 1 True Range 0 to 359 SNR C No 42 dBHz Range 0 to 99 null when not tracking Satellite ID 27 Channel 4 Range 1 to 32 Elevation 27 Degrees _ Channel 4 Maximum90 Azimuth 138 Degrees _ Channel 4 True Range 0 to 359 SNR C No 42 dBHz Range 0 to 99 null when not tracking Checksum 71 lt CR gt lt LF gt End of message termination Depending on the number of satellites tracked multiple messages of GSV data may be required RMC Recommended Minimum Specific GNSS Data Table B 10 contains the values for the following example GPRMC 161229 487 A 3723 2475 N 12158 3416 W 0 13 309 62 120598 10 Table B 10 RMC Data Format Name Example Units Message ID GPRMC RMC protocol header UTC _ Time 161229 487 hhmmss sss Status A A data valid or V data not valid Latitude 3723 2475 ddmm mmmm N S Indicator N N north or S south Longitude 12158 3416 dddmm mmmm E W Indicator W E east or W west Speed Over Ground 0 13 knots Course Over Ground 309 62 degrees True Date 120598 ddmmyy Magnetic Variation degrees E east or W west Checksum 10 lt CR gt lt LF gt End of message termination SiRF Technology Inc does not support magnetic declination Al
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