Linx-technologies RXM-GPS-R4 Instrukcja Użytkownika

R4 Series GPS Receiver Module Data Guide

– – – –1415GSV – GPS Satellites in ViewFigure 13 contains the values for the following example:$GPGSV,3,1,12,28,81,285,42,24,67,302,46,31,54,3

– – – –1617VTG – Course Over Ground and Ground SpeedFigure 15 contains the values for the following example:$GPVTG,79.65,T,,M,2.69,N,5.0,K,A*3

– – – –1819100 – SetSerialPortThis command message is used to set the protocol (SiRF binary or NMEA)and/or the communication parameters (baud

– – – –2021Update Rate Control Example1Name Example Units DescriptionMessage ID $PSRF103 PSRF103 protocol headerMsg 00 See Figure 22Mode 010=

– – – –2223104 – LLANavigationInitializationThis command is used to initialize the receiver with the current position (in lattitude, longitude

– – – –2425Typical ApplicationsFigure 27 shows the R4 Series GPS receiver in a typical application using a passive antenna.A microcontroller U

– – – –2627Board Layout GuidelinesThe module’s design makes integration straightforward; however, it is still critical to exercise care in PCB

– – – –2829Microstrip DetailsA transmission line is a medium whereby RF energy is transferred from one place to another with minimal loss. Thi

– – – –3031ResourcesSupportFor technical support, product documentation, application notes, regulatory guidelines and software updates, visit

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Table of Contents 1 Description 1 Features 1 Applications 2 Ordering Information 2 Absolute Maximum Ratings 2 Electrical Specications 4 Pin As

– –1DescriptionThe R4 Series GPS receiver module is a self-contained high-performance GPS receiver. Based on the SiRFstar IV chipset, it provides

– – – –23Ordering InformationOrdering InformationPart Number DescriptionRXM-GPS-R4-x R4 Series GPS Receiver ModuleMDEV-GPS-R4 R4 Series GPS Re

– – – –45NC1NC21PPS3TX4RX5GND21NC61PPS7/RESET8RFPWRUP9ON_OFF10GND 20RFIN 19GND 18VOUT 17NC 16GND 22NC 15NC 14NC 13VCC 12VBACKUP 11Figure 5: R4

– – – –67Time To First Fix (TTFF)TTFF is often broken down into three parts:Cold: A cold start is when the receiver has no accurate knowledge

– – – –89Antenna ConsiderationsThe R4 Series module is designed to utilize a wide variety of external antennas. The module has a regulated po

– – – –1011Slow Start TimeThe most critical factors in start time are current ephemeris data, signal strength and sky view. The ephemeris data

– – – –1213NMEA Output MessagesThe following sections outline the data structures of the various NMEA messages that are supported by the modul