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Altina GGM308U User Manual

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Version 1.01 2004 / 09 / 16
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Copyright is reserved by Altina

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Summary of Contents for Altina GGM308U

  • Page 1 Version 1.01 2004 / 09 / 16 Copyright is reserved by Altina...

  • Page 2: Table Of Contents

    ...6 ...7 ...7 ...8 ...8 ESSAGE YSTEM OSITION WITH ATITUDE (GSA) CTIVE ATELLITES (GSV) ...11 GNSS D INIMUM PECIFIC ROUND AND ROUND PEED ...13 ...13 (GGA) ...8 (GLL) ...9 ONGITUDE ...10 (RMC) ...11 (VTG) ...12 Copyright is reserved by Altina...

  • Page 3: Overview

    It communicates with device (such as PocketPC or notebook) via compatible dual-channel through RS-232 or TTL and saves satellite data by built–in backup memory. Low power consumption technology enables GGM308U and your device to save more operating power. Furthermore, GGM308U can track up to 12 satellites at a time, re-acquire satellite signals in 100ms and update position data every second.

  • Page 4: Specification

    FLASH base program memory 3 SPECIFICATION Key Feture Frequency L1, 1575.42 MHz C/A Code 1.023 MHz chip rate Channels Sensitivity -173 dBW Non DGPS (Differential GPS) Position Horizontal 5 to 25 meter CEP, without SA Velocity 0.1 meter/second, without SA Time 1 microsecond synchronized GPS time DGPS (Differential GPS)
  • Page 5 Dimension 2.32" x 1.85" x 0.82" (59.32mm x 51.28mm x 20.3mm) Cable Length 60" (1500mm)

  • Page 6: Hardware

    4 HARDWARE 4.1. Dimension...

  • Page 7: Output Terminal And Definition

    4.2. Output terminal and definition Output terminal:: USB connector Pin definition: 4.3. USB Driver System Requirement IBM, Pentium or above and other compatible PC; 16 MB and above memory; Windows 98/Me/2000; VGA Graphic Adapter. Installation 1. Copy entire 【GGM308 USB_Driver】folder from CD to hard disk. 2.

  • Page 8: Software Data

    Please note that the Virtual COM Port number might be different from every computer. Before using navigating software, please confirm the COM Port number created by your computer and provided by your navigation software. Otherwise, the navigating software won’t receive the satellite signal, because of the un-match COM Port setting. 5.

  • Page 9: (Gll)

    Position Fix Indicator Satellites Used HDOP MSL Altitude Table 5-2 GGA Data Format-continue Name Example Units Geoid Separation Units Age of Diff. Corr. Diff. Ref. Station ID 0000 Checksum <CR> <LF> Table 5-3 Position Fix Indicator Value 0 Fix not available or invalid GPS SPS Mode, fix valid Differential GPS, SPS Mode, fix valid GPS PPS Mode, fix valid...
  • Page 10 Checksum <CR> <LF> 5.4. GNSS DOP and Active Satellites (GSA) Table 5-4 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 5-5 GSA Data Format Name Example Message ID $GPGSA Mode 1 Mode 2 Satellite Used(1) Satellite Used(1) Satellite Used PDOP...

  • Page 11: View (Gsv)

    5.5. GNSS Satellites in View (GSV) Table 5-8 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 5-8 GSV Data Format Name Example Message ID $GPGSV Number of Messages Message Number Satellites in View Satellite ID Elevation Azimuth SNR (C/No) Satellite ID Elevation Azimuth...

  • Page 12: Round And Ground Speed (Vtg)

    UTC Time 161229.487 Status Latitude 3723.2475 N/S Indicator Longitude 12158.3416 E/W Indicator Speed Over 0.13 Ground Course Over 309.62 Ground Date 120598 Magnetic Variation(1) Checksum <CR> <LF> NOTE: SiRF Technology Inc. does not support magnetic declination. All “course over ground” data are geodetic WGS84 directions.

  • Page 13: Rtcm Received D 6. Warranty

    (3) damage caused by accident, fire, power changes, other hazards, or acts of God; or (4) use of the product with any non-Altina device or service if such device or service caused the problem.
  • Page 14 Altina is not responsible for Customer products received without a warranty service authorization and may be rejected. Repaired or replacement products become the property of Altina. WARRANTIES EXCLUSIVE: THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OF IMPLIED,...

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