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RoyalTek RGM-3550LP manual

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Table of contents for the manual

  • Page 1

    1 RGM-3550LP User Manual RGM-3550LP User Manual Version 1.3 2008/11/19 This document contains information highly confidential to RoyalTek Company LTD (RoyalTek). It is provided for the so le purpose of the business discussions between supplier and RoyalTek and is covered under the terms of the applicable Non-Disclosure Agr eements. Disclosure of th[...]

  • Page 2

    2 RGM-3550LP User Manual 0. Revision History Rev Release Date Change Description Editor 1.0 2007/3/26 Initial Draft Amanda Lee 1.1 2007/4/30 Current-- Acquisition: 50mA (typical) T racking: 45mA (typical) Amanda Lee 1.2 2007/5/14 Chipset Sensitivity: -159dBm (tracking) Cold start: 35 sec@ open sky W arm st art: 35 sec@ open sky Hot start:1 sec @ op[...]

  • Page 3

    3 RGM-3550LP User Manual Content 1. Introduc tion ............................................................................................... 4 2. RGM-3550LP Picture and Pin Defi nition ................................................... 5 3. RGM-3550LP System Block Di agram ....................................................... 6 4. RGM-3550L[...]

  • Page 4

    4 RGM-3550LP User Manual RoyalTek GPS Module: RGM-3550LP Operational Manual 1. Introduction RoyalTek RGM-3550LP smart antenna GPS module (patch antenna embedded and external antenna supported) is inherited from RGM-3550, but lower power consumption than RGM-3550. The smart antenna GPS module is powered by SiRF Star III technology and RoyalTek propr[...]

  • Page 5

    5 RGM-3550LP User Manual 2. RGM-3550LP Picture and Pin Definition Pin 1 Pin 6 31 ± 0.3 mm 35 ± 0.3mm[...]

  • Page 6

    6 RGM-3550LP User Manual 3. RGM-3550LP System Block Diagram System block diagram description:  Patch antenna with 1 S tage LNA  4Mega bits flash memory on chip  MMCX External Antenna Supported  6 pin I/O pin (see page 7, Interface pin definition) 6 Pin I /O LNA SIRF GSC3 F wit h 4M Fla sh RF frontend +Base- b and Proces so r TCXO XT AL [...]

  • Page 7

    7 RGM-3550LP User Manual 4. RGM-3550LP Technique Specification No Function S pecification GPS receiver 1 Chipset SiRF GSC3F/LP single chip set 2 Frequency L1 1575.42MHz. 3 Code C.A. Code. 4 Channels 20. 5 Chipset Sensitivity -159dBm (tracking) 6 Cold start 35 sec@ open sky 7 W arm st art 35 sec@ open sky 8 Hot start 1 sec @ open sky 9 Reacquisition[...]

  • Page 8

    8 RGM-3550LP User Manual 24 S torage temperature -40 ~ +85 ℃ (except for SRAM battery backup -40 to +60 degree Celsius) 25 Humidity ≦ 95% 26 Lead Free Y es External Antenna RF Input 27 Drive Output V oltage 2.85V ± 0.5% 28 Drive Output Current 30mA (max) 29 Connector T ype MMCX Interface Pin definition (VDD=2.85V ± 2% ) Pin # Signal Name I/O [...]

  • Page 9

    9 RGM-3550LP User Manual  RX This is the main receiver channel and is used to receive so ftware commands to the board from SIRFdemo software or from user written software. PS: Pull up if not used.  TX This is the main transmitting channel and is us ed to output navigation and measurement data to SiRFdemo or user written sof tware.  GPS S t[...]

  • Page 10

    10 RGM-3550LP User Manual 5. Mechanical Lay out 25x25x4mm patch antenna 25x25x2mm patch antenna[...]

  • Page 11

    11 RGM-3550LP User Manual 6. How to Assemble/Fix RGM-3550LP Below is our recommendation to a ssemble/fix up RGM-3550LP GPS module on the customer board or device case. Hole Hole[...]

  • Page 12

    12 RGM-3550LP User Manual 7. Software Specification and NMEA Protocol Software Specification GPS Firmware - S tandard SiRF firmware for SSIII (GSW3 & SiRFLoc 3) - Upload firmware - RGM-3550L P [GSW3][SBAS GGA(1), GSA(1), GSV(1), RMC(1) 9600 GPS Firmware, version 2.1.0.123 (default) GPS Utility - A GPS performance diagnostic utility is required [...]

  • Page 13

    13 RGM-3550LP User Manual T able 2 GGA Data Format Name Example Unit s Description Message ID $GPGGA GGA protocol header UTC Position 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 T able 2-1 Satellites Used 07 Range[...]

  • Page 14

    14 RGM-3550LP User Manual T able 3 GLL Data Format Name Example Unit s Desc ription Message ID $GPGLL GLL protocol header Latitude 3723. 2475 ddmm.mmmm N/S Indicator N N=north or S=south Longitude 12158.3416 Dddmm.mmm m E/W Indicator W E=east or W=west UTC Position 161 229.487 hhmmss.ss S tatus A A=data valid or V=data not valid Checksum *2C ＜ CR[...]

  • Page 15

    15 RGM-3550LP User Manual T able 4-2 Mode 2 V alue Description M Manual-forced to operate in 2D or 3D mode A Automatic-allowed to aut omaticall y switch 2D/3D GSV -GNSS Satellites in View T able 5 cont ains the values of 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,[...]

  • Page 16

    16 RGM-3550LP User Manual T able 6 GGA Data Format Name Example Unit s Des cription Message ID $GPRMC RMC protocol hea der UTC Position 161 229.487 hhmmss.sss S tatus 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 S peed Over Grou[...]

  • Page 17

    Copyright © 2007-2008 , RoyalT ek Comp any Ltd. RGM-3550LP User Manual GPS Receiver User ’ s T ip 1. GPS signal will be affected by weather and environment conditions, thus sugg est to use the GPS receiver under less shielding environme nts to ensure GPS receiver has better receiving performance. 2. When GPS receiver is moving, it will prolong t[...]

  • Page 18

    Copyright © 2007-2008 , RoyalT ek Comp any Ltd. RGM-3550LP User Manual 8. Package Specificati on and Order Information 1 2 3[...]