Globalsat ET-332 User Manual
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Globalsat ET-332 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-332
GPS Engine Board
ET-332
Page 1 of 15
USGlobalSat, Inc.
1308 John Reed Court, City of Industry, CA 91745
Tel: 626-968-4145 / Fax: 626-968-4373
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-332

  • Page 1 ET-332 Version 1.3.1 GPS Engine Board ET-332 Globalsat Technology Corporation USGlobalSat, Inc. 16F., No. 186, Jian-Yi Road, Chung-Ho City, Taipei Hsien 235, 1308 John Reed Court, City of Industry, CA 91745 Taiwan Tel: 626-968-4145 / Fax: 626-968-4373 Tel: 886-2-8226-3799/ Fax: 886-2-8226-3899 oem@usglobalsat.com...

  • Page 2: Product Information

    1. Product Information Product Part I.D. ET-332 Product Description: The ET-332 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 Star III/ LP Single Very high sensitivity (Tracking Sensitivity: -159dBm) Compact PCB allows for easier integration into space limited environments.
  • Page 3 ET-332 Version 1.3.1 Warm Start 38 seconds average Hot Start 1 second average Reacquisition 0.1 second average Accuracy Position: 10 meters, 2D RMS 5 meters, 2D RMS, WAAS enabled Velocity: 0.1 m/s Time: 1us synchronized to GPS time Maximum Altitude...

  • Page 4: Technical Information

    ET-332 Version 1.3.1 2. Technical Information Physical Characteristics Specifications are subject to be changed without notice. Page 4 of 15...

  • Page 5: Pin Assignment

    ET-332 Version 1.3.1 Pin Assignment Name Description Type Ground VBAT Backup Battery Input 3.8V~6.5V DC Power Input Input PBRES Push Button Reset Input (Active Low) Input GPIO1 (Reserved) Serial Data Output A (GPS Data) Output Serial Data Input A (Command)

  • Page 6: Software Commands

    ET-332 Version 1.3.1 Pin Explanation : (DC power input) This is the main DC supply for a 3.8V ~ 6.5V power module board. VBAT: This is the battery backup input that powers the SRAM and RTC when main power is removed.
  • Page 7 ET-332 Version 1.3.1 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=north or S=south Longitude 12158.3416 dddmm.mmmm E/W Indicator E=east or W=west Position Fix Indicator...
  • Page 8 ET-332 Version 1.3.1 UTC Position 161229.487 hhmmss.sss Status A=data valid or V=data not valid Checksum <CR><LF> 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...
  • Page 9 ET-332 Version 1.3.1 $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 Units Description Message ID $GPGSV GSV protocol header Number of Messages Range 1 to 3 Message Number Range 1 to 3 Satellites in View Satellite ID Channel 1(Range 1 to 32)
  • Page 10 ET-332 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 11 ET-332 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 12 ET-332 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 13 ET-332 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 14 ET-332 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 15 ET-332 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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