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TW5310 GPS Receiver/Antenna User Manual Visit us on the web: www.tallysman.com Document # 61-0009-0...
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Tallysman Wireless Inc. retains an exclusive right to reproduction, manufacture and sale. This document is submitted in confidence, for the use of the recipient alone, or in conjunction with Tallysman Wireless Inc. and its licensees, and for no other purpose whatsoever unless permission for further disclosure is expressly granted in writing.
TW5310 User Manual 1 Introduction The TW5310 is an integrated GPS receiver/antennas designed for use in professional grade applications such as vehicle tracking and timing applications. It features the STMicroelectronics STA8058 Teseo™ WAAS, EGNOS and MSAS enabled GPS receiver IC, a high performance low noise amplifier stage, a tight out-of-band SAW...
The TW5310 performance is easy to evaluate with the following software applications. Open Source GPS Software Utility The TW5310 is compatible with most third party applications that are capable of decoding standard NMEA 0183 messages. The following open source GPS utility can be used to display the NMEA output sentences graphically.
TW5310 User Manual 3 TW5310 Interface The TW5310 cable is terminated in a RJ45 connector. The RJ45 connector can be cut off if a custom connector interfaces is required. Figure 3 Wiring connections are indicated in Table 1 Wire Color...
GPS position and timing information is output once per second in NMEA format. The NMEA RX and TX outputs are at RS232 levels. The default output from the TW5310 is 3 digit GGA and RMC messages at 4800 baud, but can be configured to output 4 or 5 digit resolution.
TW5310 User Manual Note 2: If you are using the Visual GPS software utility to display TW5310 outputs, the GSV message should be enabled to view satellite signal strengths. 1PPS Differential 1PSS outputs at RS422 levels are provided. The 1PPS signal is synchronized to UTC to within 100 nanoseconds.
TW5310 User Manual 4.3.1 1PPS Single ended termination If you are using a single ended termination of the 1PPS signal, either of the following terminations can be used. 1PPS_A or 1PPS_B can be used as the single ended output. 1PPS_A...
Figure 8 shows the internal 1PPS qualification status of the TW5310. Once the 1PPS status is detected as good, a 1PPS Start Delay is inserted before the 1PPS qualification signal is output to ensure that the TW5310 has time to average out the satellite clocks and provide a stable 1PPS output.
TW5310 User Manual Satellite Based Augmentation System (SBAS) The TW5310 can be configured to use satellite corrections transmitted by SBAS satellites to provide greater positioning accuracy. There are three compatible SBAS systems which are integrated to provide a seamless worldwide navigation system. The following are valid SBAS satellite ID’s...
TW5310 User Manual 6 NMEA Message Reference NMEA 0183 sentences are all ASCII. Each sentence begins with a dollar sign ($) and ends with a carriage return linefeed (<CR><LF>). Data is comma delimited. A checksum is optionally added. The following format indicate 5 digit RMC and GGA outputs.
TW5310 User Manual cc__fix length of valid characters Spaces are only used in variable text fields. Negative values are indicated by the first character in the field. Please see the full NMEA 0183 Specification for a full description of the message field formats.
TW5310 User Manual Note: The number of 6.1.2 GGA The GGA message provides Fix Information. $GPGGA,hhmmss.sss,llll.lllll,a,yyyyy.yyyyy,a,x,xx,xx.x,xxx.xx,M,xx.x,M,x.x,xxxx*hh GGA = Global Positioning System Fix Data $GPGGA,204804.000,4520.25363,N,07554.20602,W,0,00,99.0,087.54,M,-34.4,M,,*62 The following fields are listed in the order shown in the comma-separated sentence. 1 = UTC of Position...
TW5310 User Manual 6.1.3 GSA The GSA message provides overall satellite data $GPGSA,a,x,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx.x,xx.x,xx.x*hh GSA = GPS receiver operating mode, SVs used for navigation, and DOP values. $GPGSA,A,1,,,,,,,,,,,,,99.0,99.0,99.0*00 The following fields are listed in the order shown in the comma-separated sentence.
TW5310 User Manual 5 = Elevation in degrees, 90 maximum 6 = Azimuth, degrees from true north, 000 to 359 7 = SNR, 00-99 dB (null when not tracking) 8-11 = Information about second SV, same as field 4-7 12-15 = Information about third SV, same as field 4-7...
Parameter Fields The following configuration parameters can be set and saved: Baud rate: Sets the operating baud rate of the TW5310. If this is changed and written to the TW5310 you will need to change the Configurator baud rate to match.
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PDOP value the poorer the quality. 1PPS Qual Stop Delay: This is the period that the TW5310 can freewheel during loss of GPS fix before the 1 PPS Qualification output is disabled.