Globalsat ET-212 User Manual

Gps engine board
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Globalsat Technology Corporation
16F., No. 186, Jian-Yi Road, Chung-Ho City, Taipei Hsien 235, Taiwan
Tel: 886-2-8226-3799/ Fax: 886-2-8226-3899
service@globalsat.com.tw
www.globalsat.com.tw
ET-212
GPS Engine Board
ET-212
Page 1 of 17
USGlobalSat, Inc.
14740 Yorba Court, Chino, CA 91710
Tel: 909.597.8525 / Fax: 909.597.8532
oem@usglobalsat.com
www.usglobalsat.com
Specifications are subject to be changed without notice.
Version 1.3.1

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Summary of Contents for Globalsat ET-212

  • Page 1 ET-212 Version 1.3.1 GPS Engine Board ET-212 Globalsat Technology Corporation USGlobalSat, Inc. 16F., No. 186, Jian-Yi Road, Chung-Ho City, Taipei Hsien 235, Taiwan 14740 Yorba Court, Chino, CA 91710 Tel: 886-2-8226-3799/ Fax: 886-2-8226-3899 Tel: 909.597.8525 / Fax: 909.597.8532 service@globalsat.com.tw oem@usglobalsat.com www.globalsat.com.tw...
  • Page 2: Product Information

    1. Product Information Product Part I.D. ET-212 Product Description The ET-212 GPS engine board is low cost but maintains high reliability and accuracy making it an ideal choice for integration with OEM/ODM systems. Product Features SiRF GSC2x high performance GPS Chip Set...
  • Page 3: Physical Characteristics

    ET-212 Version 1.3.1 Warm Start 38 seconds average Hot Start 8 second average Reacquisition 0.1 second average Accuracy Position: 10 meters, 2D RMS 5 meters, 2D RMS, WAAS enabled Velocity: 0.1 ms Time: 1µs synchronized to GPS time Maximum Altitude...
  • Page 4: Technical Information

    ET-212 Version 1.3.1 2. Technical Information Physical Characteristics Specifications are subject to be changed without notice. Page 4 of 17...
  • Page 5: Pin Assignment

    ET-212 Version 1.3.1 Pin Assignment Specifications are subject to be changed without notice. Page 5 of 17...
  • Page 6 ET-212 Version 1.3.1 Pin Explanation Connects to a patch, or an external active antenna. VIN: (DC power input) This is the main DC supply for a 3.3V+ -5% DC input power module board. BATTERY: (Backup battery) This is the battery backup that powers the SRAM and RTC when main power is removed.
  • Page 7 ET-212 Version 1.3.1 Recommended Pad Layout and Dimensions Specifications are subject to be changed without notice. Page 7 of 17...
  • Page 8: Software Commands

    ET-212 Version 1.3.1 Pulse Per Second Test Point ET-212 Test Point (TP) 10 is 1 Pulse Per Second (PPS) Time Mark Output 3. Software Commands 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,1,07,1.0,9.0,M,,,,0000*18...
  • Page 9 ET-212 Version 1.3.1 E/W Indicator E=east or W=west Position Fix Indicator See Table B-3 Satellites Used Range 0 to 12 HDOP Horizontal Dilution of Precision MSL Altitude meters Units meters Geoid Separation meters Units meters Age of Diff. Corr. second Null fields when DGPS is not used Diff.
  • Page 10 ET-212 Version 1.3.1 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 Indicator N=north or S=south Longitude 12158.3416 dddmm.mmmm...
  • Page 11 ET-212 Version 1.3.1 Table B-6 Mode1 Value Description Manual-forced to operate in 2D or 3D mode 2D automatic-allowed to automatically switch 2D/3D Table B-7 Mode 2 Value Description Fix Not Available GSV-GNSS Satellites in View Table B-8 contains the values for the following example:...
  • Page 12 ET-212 Version 1.3.1 RMC-Recommended Minimum Specific GNSS Data Table B-9 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-9 RMC Data Format Name Example Units Description Message ID $GPRMC RMC protocol header UTC Time 161229.487 hhmmss.sss Status A=data valid or V=data not valid Latitude 3723.2475...
  • Page 13 ET-212 Version 1.3.1 ■ NMEA Input Command A.) Set Serial Port ID:100 Set PORTA parameters and protocol This command message is used to set the protocol (SiRF Binary, NMEA, or USER1) and/or the communication parameters (baud, data bits, stop bits, parity). Generally, this command is utilize to switch the GPS module back to SiRF Binary protocol mode, where an extensive message commands are readily available.
  • Page 14 ET-212 Version 1.3.1 <Y> Y coordinate position INT32 <Z> Z coordinate position INT32 <ClkOffset> Clock offset of the receiver in Hz, Use 0 for last saved value if available. If this is unavailable, a default value of 75000 for GSP1, 95000 for GSP 1/LX is used.
  • Page 15 ET-212 Version 1.3.1 This command is used to control standard NMEA data output messages: GGA, GLL, GSA, GSV, RMC, and VTG. Using this command message, standard NMEA message is polled once, or setup for periodic output. In addition, checksums may also be enable or disable contingent on receiving program requirements.
  • Page 16 ET-212 Version 1.3.1 If this is unavailable, a default value of 75000 for GSP1, 95000 for GSP1/LX is used. INT32 <TimeOfWeek> GPS Time Of Week UINT32 <WeekNo> GPS Week Number UINT16 <ChannelCount> Number of channels to use. 1-12 UBYTE <ResetCfg>...
  • Page 17: Units Description

    ET-212 Version 1.3.1 Name Example Units Description Message ID $PSRF106 PSRF106 protocol header Datum 21= WGS84 178= Tokyo_Mean 179= Tokyo_Japan 180= Tokyo_Korea 181= Tpkyo_Okinawa Checksum <CR><LF> End of message termination * * * Specifications are subject to be changed without notice.

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