RXM-GPS-R4-B Linx Technologies, RXM-GPS-R4-B Datasheet
RXM-GPS-R4-B
Specifications of RXM-GPS-R4-B
Related parts for RXM-GPS-R4-B
RXM-GPS-R4-B Summary of contents
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... GPS Receiver Module R4 Series Data Guide ...
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... All RF products are susceptible to RF interference that can prevent communication. Lack of good sight of the GPS satellites (open sky) can affect the accuracy of a position fix or prevent a fix entirely. Do not use any Linx product over the limits in this data guide. ...
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... Description 1 Features 1 Applications 1 Ordering Information 2 Electrical Specifications 2 Absolute Maximum Ratings 3 Pin Assignments 4 Pin Descriptions 4 A Brief Overview of GPS 5 Client Generated Extended Ephemeris (CGEE) 5 Time To First Fix (TTFF) 6 Module Description 6 Backup Battery 7 Power Supply Requirements 7 The 1PPS Output 7 Antenna Considerations 8 Power Control ...
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NMEA Input Messages 18 19 100 – SetSerialPort 20 101 – NavigationInitialization 21 103 – Query / Rate Control 23 104 – LLANavigationInitialization 24 105 – Development Data On / Off Master Development System 25 Board Layout Guidelines 26 Pad ...
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... CGEE allows 3-day prediction • No programming necessary Applications Include • Positioning and Navigation • Location and Tracking • Security/Loss-Prevention GPS MODULE 0.512 (13.00) RXM-GPS-R4 LOT GRxxxx 0.087 (2.20) Figure 1: Package Dimensions • No external RF components needed (except an antenna) • No production tuning • Direct serial interface • ...
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... Ordering Information Ordering Information Part Number RXM-GPS-R4-x MDEV-GPS-R4 EVM-GPS- “T” for Tape and Reel, “B” for Bulk Electrical Specifications Reels are 1,000 pieces Quantities less than 1,000 pieces are supplied in bulk Figure 2: Ordering Information Electrical Specifications R4 Series GPS Receiver Specifications ...
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Receiver Section Receiver Sensitivity Tracking Navigation Cold Start Acquisition Time Hot Start (Open Sky) Hot Start (Indoor) Cold Start Cold Start, CGEE Position Accuracy Autonomous SBAS Altitude Velocity Chipset Frequency Channels Update Rate Protocol Support Antenna Port RF Impedance 1. ...
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... Pin Assignments Figure 5: R4 Series GPS Receiver Pinout (Top View) Pin Descriptions Pin Descriptions Pin Number Name 13, NC 14, 15, 16 1PPS /RESET 9 RFPWRUP 10 ON_OFF 11 VBACKUP 12 VCC 18, 20, 21, 22 GND 17 VOUT 19 RFIN Figure 6: R4 Series GPS Receiver Pin Descriptions ...
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... Client Generated Extended Ephemeris (CGEE) CGEE is a type of assisted GPS (AGPS) where the receiver uses the ephemeris data broadcast by the satellites to calculate models of each visible satellite’s future location. This allows the receiver to store days worth of ephemeris data and results in faster TTFF. – ...
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... The time to calculate a fix in this state is sometimes referred to as Time to Subsequent Fix or TTSF. Module Description The R4 Series GPS Receiver module is based on the SiRFstarIV chipset, which consumes less power than competitive products while providing exceptional performance even in dense foliage and urban canyons. No external RF components are needed other than an antenna ...
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... The 1PPS Output The 1PPS line outputs 1 pulse per second on the rising edge of the GPS second when the receiver has an over-solved navigation solution from five or more satellites. The pulse has a duration of 200ms with the rising edge on the GPS second ...
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... The R4 Series module is designed to utilize a wide variety of external antennas. The module has a regulated power output which simplifies the use of GPS antenna styles which require external power. This allows the designer great flexibility, but care must be taken in antenna selection to ensure optimum performance. For example, a handheld device may ...
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... Power Control The R4 Series GPS Receiver module offers two power control modes: Full Power and Hibernate. In Full Power mode the module is fully active and and continuously tracking. Measurements are of the highest quality and are continuously output by the module. This is the highest current consumption state ...
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Typical Applications VCC RX TX µP IN OUT GND GND Figure 8: Circuit Using the R4 Series Module with a Passive Antenna VCC RX TX µP IN OUT GND GND Figure 9: Circuit Using the R4 Series Module with a ...
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... GPS development in a small command set. The SiRF Binary protocol uses BYTE data types and allows more detailed control over the GPS receiver and its functionality using a much larger command set. Although both protocols have selectable baud rates, it’s recommended that SiRF Binary use 115,200bps ...
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... Update the application with the parsed field values. • Clear the receive buffer and be ready for the next set of messages. Writing NMEA input messages: • Initialize a serial interface to match the serial data structure of the GPS receiver. • Assemble the message to be sent with the calculated checksum. ...
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... Figure 11: Position Indicator Values Units Description GGA protocol header hhmmss.sss ddmm.mmmm N N=north or S=south dddmm.mmmm E E=east or W=west 1 See Figure 11 08 Range 0 to 12. 1.1 Horizontal Dilution of Precision 63.8 meters M meters 15.2 meters M meters second Null fields when DGPS is not used 0000 *64 End of message termination – – 13 ...
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... Figure 13: GNSS DOP and Active Satellites Example Example Units Description $GPGLL GLL protocol header ddmm.mmmm N N=north or S=south dddmm.mmmm E E=east or W=west hhmmss.sss A A=data valid or V=data not valid A=autonomous, D=DGPS, N=Data A not valid *52 End of message termination Example Units Description $GPGSA GSA protocol header A See Figure 14 3 1=No fix, 2=2D, 3=3D 24 ...
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Mode 1 Values Value Description M Manual – forced to operate mode A Automatic – allowed to automatically switch 2D/3D Figure 14: Mode 1 Values GSV – GNSS Satellites in View Figure 15 below contains the ...
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... Units Description RMC protocol header hhmmss.sss A A=data valid or V=data not valid ddmm.mmmm N N=north or S=south dddmm.mmmm E E=east or W=west 2.69 knots TRUE 79.65 degrees 100106 ddmmyy degrees Not available, null field E=east or W=west (not shown) A=autonomous, D=DGPS, N= Data A not valid *53 End of message termination – – 16 ...
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... Figure 17: Course Over Ground and Ground Speed Example Example Units Description $GPVTG VTG protocol header 79.65 degrees Measured heading T TRUE degrees Measured heading (N/A, null field) M Magnetic 2.69 knots Measured speed N Knots 5.0 km/hr Measured speed K Kilometer per hour A=autonomous, D=DGPS, N= Data A not valid *38 End of message termination – – 17 ...
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NMEA Input Messages The following outlines the serial commands input into the module for configuration. By default, the commands are input at 9,600bps, 8 data bits, no parity and 2 stop bits. Serial Data Structure Name Example Start Sequence Message ...
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SetSerialPort This command message is used to set the protocol (SiRF binary or NMEA) and/or the communication parameters (baud rate). Generally, this command is used to switch the module back to SiRF binary protocol mode where a more ...
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... Figure 22: ResetCfg Values Units Description PSRF101 protocol header meters X coordinate position meters Y coordinate position meters Z coordinate position 96000 Hz Clock Offset 497260 seconds GPS Time Of Week 921 GPS Week Number 12 Range See Figure 22 *1F End of message termination – – ...
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Query / Rate Control This command is used to control the output of standard NMEA messages GGA, GLL, GSA, GSV, RMC and VTG. Using this command message, standard NMEA messages may be polled once, or setup for periodic ...
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MSGValues Value Description 0 GGA 1 GLL 2 GSA 3 GSV 4 RMC 5 VTG 6 MSS (not supported) 7 Not defined 8 ZDA 9 Not defined Figure 24: MSG Values – – 22 ...
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... Latitude position (Range 90 to –90) Longitude position (Range 180 to degrees –180) 0 meters Altitude position Clock Offset of the Evaluation 96000 Hz Receiver1 237759 seconds GPS Time Of Week Extended GPS Week Number (1024 1946 added) 12 Range See Figure 26 *07 End of message termination – – 23 ...
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... Default setting is debug mode off. Figure 27: Development Data On / Off Example 117 – System Turn Off This message requests that the GPS receiver perform an orderly shutdown and switch to hibernate mode. Figure 28 below contains the values for the following example: $PSRF117,16*0B ...
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... Figure 29: The R4 Series Master Development System The development board includes a power supply, a prototyping area for custom circuit development, and an OLED display that shows the GPS data without the need for a computer. A USB interface is also included for use with a PC running custom software or the included development software ...
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Board Layout Guidelines The module’s design makes integration straightforward; however still critical to exercise care in PCB layout. Failure to observe good layout techniques can result in a significant degradation of the module’s performance. A primary layout goal ...
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Each of the module’s ground pins should have short traces tying immediately to the ground plane through a via. Bypass caps should be low ESR ceramic types and located directly adjacent to the pin they are serving. A 50-ohm coax ...
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Microstrip Details A transmission line is a medium whereby RF energy is transferred from one place to another with minimal loss. This is a critical factor, especially in high-frequency products like Linx RF modules, because the trace leading to the ...
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Production Guidelines The modules are housed in a hybrid SMD package that supports hand and automated assembly techniques. Since the modules contain discrete components internally, the assembly procedures are critical to ensuring the reliable function of the modules. The following ...
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Automated Assembly For high-volume assembly, most users will want to auto-place the modules. The modules have been designed to maintain compatibility with reflow processing techniques; however, due to their hybrid nature, certain aspects of the assembly process are far more ...
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... For more complex RF solutions, Apex Wireless, a division of Linx Technologies, creates optimized designs with RF components and firmware selected for the customer’s application. Call +1 800 736 6677 (+1 541 471 6256 if outside the United States) for more information ...
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... Under no circumstances shall any user be conveyed any license or right to the use or ownership of such items. The stylized Linx logo, Wireless Made Simple, CipherLinx and the stylized CL logo are trademarks of Linx Technologies. All rights reserved. ©2013 Linx Technologies ...