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EverMore GM-X205 User Manual

Gps receiver module
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GM-X205
GPS Receiver Module
User's Guide
EverMore Technology Inc.
EverMore Technology Inc.
2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C.
http://www.emt.com.tw
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Summary of Contents for EverMore GM-X205

  • Page 1 GM-X205 GPS Receiver Module User’s Guide EverMore Technology Inc. EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...
  • Page 2 Updated NMEA output message format © EverMore Technology Inc. All rights reserved. Not to be reproduced in whole or part for any purpose without written permission of EverMore Technology Inc. Information provided by EverMore Technology Inc. is believed to be accurate and reliable. However, no responsibility is assumed by EverMore Technology Inc.

  • Page 3: Table Of Contents

    VTG - Course Over Ground and Ground Speed ---------------------18 EverMore Binary Message Specification ----------------------------19 4.2.1 EverMore Binary Message 0x80: Initialization ------------------20 4.2.2 EverMore Binary Message 0x81: Data Logging -------------------- 21 4.2.3 EverMore Binary Message 0x86: Elevation Mask Input ------------21 4.2.4 EverMore Binary Message 0x87: DOP Mask Input ------------------21 4.2.5...
  • Page 4 4.3.3.1 Configuring for Data Logging --------------------------------31 4.3.3.2 Retrieving Logged Data --------------------------------------31 Appendix A Supported Datum List ----------------------------------------- 32 Appendix B Default Values ----------------------------------------------- 39 EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 5: Introduction

    INTRODUCTION 1.1 OVERVIEW The GM-X205 GPS Receiver is intended for use in a wide range of applications. The receiver simultaneously tracks up to twelve satellites, provides accurate satellite positioning data with fast time-to-first-fix (TTFF) and low power consumption. It is designed for high performance and maximum flexibility in a wide range of applications including mobile asset tracking, in-vehicle automotive guidance, location sensing, telematics and so on.

  • Page 6: Receiver Operation

    As soon as GPS signal is acquired and tracked, the GM-X205 will transmit valid navigation information through its serial interface. The navigation data contains following information:...

  • Page 7: Receiver Specification

    Primary Power +3.8V ~ 8V DC Current Consumption 125mA @ 3.3V Serial Interface RS-232 Protocol EverMore Private @ 4800/9600 baud, 8-None-1 NMEA-0183 v2.20 @ 4800/9600 baud, 8-None-1 Datum 219 standard datum, default WGS-84 Antenna On-Board Patch Antenna NMEA Message GGA, GLL, GSA, GSV, RMC, and VTG Dimension 45.5mm x 31mm x 15mm...

  • Page 8: Hardware Interface

    SECTION 3 HARDWARE INTERFACE 3.1 MECHANICAL DIMENSIONS Unit:mm Top View 45.5± 0.2 Lateral View I/O Pin 45.5± 0.1 I/O Pin Bottom View 45.5± 0.2 EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 9: Rf Module Hardware Interface

    GND : Power and signal ground REF Out : 16.367MHz reference output GND : Power and signal ground IF Out : 4.092MHz IF signal output EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 10: Baseband Hardware Interface

    Pin 3: Vcc, Power supply input, 3.8V ~ 8.0V DC unregulated Pin 4: GND, Ground Pin 5: 1PPS Valid Signal (1:Valid, 0:Invalid) Pin 6: 1PPS EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 11: One-Pulse-Per-Second Output

    GPS second. For best stable operation of the 1PPS signal, it is to be operated in static environment having clear view of the sky. EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 12: Software Interface

    SECTION 4 SOFTWARE INTERFACE This section describes the details of the serial port commands through which the GM-X205 is controlled and monitored. The serial port commands allow users to set the receiver parameters, configure output message type, and retrieve status information. The baud rate and protocol of the host COM port must match the baud rate and protocol of the GPS receiver serial port for commands and data to be successfully transmitted and received.

  • Page 13: Gga - Global Positioning System Fix Data

    Null when DGPS is not used Differential Reference xxxx, 0000 ~ 1023 Station ID Leading zeros transmitted Null when DGPS is not used Checksum EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 14: Gll - Geographic Position - Latitude / Longitude

    E=east or W=west UTC Time 110519.259 hhmmss.sss hour, minute, sec & decimal sec 000000.000 ~ 235959.999 Leading zeros transmitted Status A=data valid V=data invalid Checksum EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 15: Gsa - Gnss Dop And Active Satellites

    Null for unused channels. Leading zeros transmitted PDOP 01.3 xx.x Leading zeros transmitted HDOP 00.8 xx.x Leading zeros transmitted VDOP 01.0 xx.x Leading zeros transmitted Checksum EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 16: Gsv - Gnss Satellites In View

    SV3 ID number, 01 ~ 32 Elevation Angle #4 degree 00 ~ 90 Azimuth Angle #4 degree 000 ~ 359 C/No #4 dB/Hz C/No 00 ~ 99 Checksum EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 17: Rmc - Recommended Minimum Specific Gnss Data

    Leading zeros transmitted Date 061101 ddmmyy day, month, year (2 digit) Leading zeros transmitted Magnetic variation Not implemented Magnetic variation Not implemented reference Checksum EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 18: Vtg - Course Over Ground And Ground Speed

    Speed in knots Leading zeros transmitted Indicates speed in knots Speed 0104.7 Km/hr xxxx.x Speed in km/hr Leading zeros transmitted Indicates speed in km/hr Checksum EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 19: Evermore Binary Message Specification

    Message Body When DLE (0x10) is encountered in the message body, it is repeated. The EverMore Binary Message supports following message types for receiver configuration and status monitoring: Message Type 0x80: Initialization Command Input...
  • Page 20 1. Set the initial time and position of the GPS receiver. 2. Select datumn other than the default WGS-84. 3. Select the type of NMEA messages to output. 4. Enable or disable EverMore binary message output. 5. Change the baud rate configuration. Format...
  • Page 21 4.2.2 EverMore Binary Input Message 0x81: Data Logging See section 4.3 4.2.3 EverMore Binary Input Message 0x86: Set Elevation Mask Purpose Set the elevation mask for position computation. Satellites with elevation angle less than the elevation mask angle will not be used for navigation solution.
  • Page 22 4.2.5 EverMore Binary Input Message 0x89: Set Operating Mode Purpose Sets the navigation update rate and receiver-operating mode. The receiver-operating mode can be set to one of the following: 1. Normal full power mode with 1PPS synchronization disabled. 2. Power saving mode with 1PPS synchronization disabled.
  • Page 23 4.2.6 EverMore Binary Output Message 0x02: Navigation Data Purpose Outputs: GPS time. Receiver position and velocity in WGS-84 ECEF coordinate. Number of visible satellites. Number of satellites used in position-fix. GM-X205 firmware version. Format Byte # Contents Range Size Scale Unit...
  • Page 24 4.2.7 EverMore Binary Output Message 0x04: DOP Data Purpose Outputs: GPS time. GDOP, PDOP, HDOP, VDOP, and TDOP. Receiver navigation mode. Format Byte # Contents Range Size Scale Unit Message ID = 0x04 Unsigned byte 2 ~ 3 GPS week...
  • Page 25 4.2.8 EverMore Binary Output Message 0x06: Channel Status Purpose Outputs: GPS time. Number of satellites in view. Satellite ID, elevation angle, azimuth angle, C/N estimate, and status of the correlator channels. This set of data is sent for each in-view satellites.
  • Page 26 4.2.9 EverMore Binary Output Message 0x08: Measurement Data Purpose Outputs: GPS time. Clock offset. Numbers of satellites in view. Satellite ID, elevation angle, channel status, pseudo-range, delta-range, and satellite doppler frequency. This set of data is sent for each in-view satellites.

  • Page 27: Data Logging

    4.3 Data Logging In applications where the GPS receiver reported position, velocity, and time needs to be logged, the GM-X205 supports logging capability directly by storing the data in the on-board memory. The logged data may be retrieved later. The logged information consists of: GPS time, with 1 second resolution.

  • Page 28: Data Logging Input Messages

    ( ((elapsed_time > (delta_Tmax - 1)) and (delta_Tmax > 0)) or ((distance > (delta_D - 1)) and (delta_D > 0) )) record PVT data EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C.

  • Page 29: Logdata Dump

    The logging configuration information is returned using private message 0x20, described in section 4.3.2.2. Format Byte # Contents Range Size Scale Message ID = 0x81 Unsigned byte Command LogRead = 0x13 Unsigned byte EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 30: Data Logging Output Messages

    Unsigned 16bit integer 8 ~ 9 delta_Tmax 0 ~ 65535 Unsigned 16bit integer 10 ~ 11 delta_D 0 ~ 65535 Unsigned 16bit integer meter EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 31: Data Logging Programming Description

    5. To ensure only newly logged data is output after LogConfig Set command is issued, send LogData Erase command to clear the log buffer prior to sending the LogConfig Set command. EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 32: Appendix A Supported Datum List

    -173 253 27 International 1924 Guinea-Bissau Bogota Observatory 307 304 -318 International 1924 Colombia Bessel 1841 Indonesia (Bangka & Bukit Rimpah -384 664 Belitung Ids) EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...
  • Page 33 MEAN FOR Austria; Finland; Netherlands; European 1979 -98 -119 Norway; Spain; Sweden; Switzerland Clarke 1880 Nevis; St. Kitts (Leeward Fort Thomas 1955 215 225 Islands) EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...
  • Page 34 Alaska (Aleutian Ids East North American 1927 152 149 of 180øW) Clarke 1866 Alaska (Aleutian Ids North American 1927 204 105 West of 180øW) EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...
  • Page 35 -290 -172 Clarke 1866 Kauai Old Hawaiian -290 -190 Clarke 1866 Maui Clarke 1866 MEAN FOR Hawaii; Old Hawaiian -285 -181 Kauai; Maui; Oahu EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...
  • Page 36 S-42 (Pulkovo 1942) -121 -77 Krassovsky 1940 Romania Bessel 1841 Czechoslavakia (Prior 1 S-JTSK JAN 1993) Santo (DOS) 1965 84 International 1924 Espirito Santo Island EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...
  • Page 37 -38 Hough 1960 Marshall Islands WGS 1972 WGS 72 Global Definition Yacare -155 171 37 International 1924 Uruguay Zanderij -265 120 -358 International 1924 Suriname EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...
  • Page 38 International 1924 6378388 Krassovsky 1940 6378245 298.3 GRS 80 6378137 298.257222101 South American 1969 6378160 298.25 WGS 72 6378135 298.26 WGS 84 6378137 298.257223563 EverMore Technology Inc. 2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 310, R.O.C. http://www.emt.com.tw...

  • Page 39: Appendix B Default Values

    HDOP: 8 Receiver Operating Mode: Normal Mode (without 1PPS) Commands can be issued to the GM-X205 to change the settings of the receiver. The new settings will remain effective on next power-on as long as the on-board rechargeable backup battery is not discharged. After the backup battery is discharged, factory preset default settings will be used.

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