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Summary of Contents for Tallymatics TW5343
- Page 1 TW5382 User Manual TW5343 Integrated GPS/ GLONASS Receiver/Antenna User Manual Visit us on the web: www.tallymatics.com Document # 61-0082-0...
- Page 2 Tallymatics 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 Tallymatics Inc. and its licensees, and for no other purpose whatsoever unless permission for further disclosure is expressly granted in writing.
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Page 3: Table Of Contents
NMEA Packet Format ........................7 Software Utilities ........................... 8 Open Source GPS Software Utilities ................8 Hardware Interface ........................8 TW5343 Installation ......................9 Testing ............................... 9 Baud Rate ..........................9 NMEA Output test ........................9 Satellite Output Test ......................9 Power ............................ - Page 4 TW5382 User Manual 11.8 ZDA ............................33 11.9 USAGE ..........................33 11.10 WAAS ..........................34...
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Page 5: Introduction
TW5382 User Manual 1 Introduction The TW5382 is a multi-band, multi-constellation integrated GNSS receiver and precision timing reference antenna. The TW5382 is capable of providing nanosecond-level timing accuracy to support the most demanding infrastructure and timing applications. The TW5382 incorporates a latest generation multi-band (L1/ L2) GNSS receiver with a Tallysman Accutenna™... - Page 6 TW5382 User Manual Figure 1 TW5382 The TW5382 is housed in an industrial grade weatherproof IP69K enclosure for 19mm diameter (¾”) thru-hole mount or mast mount installations. For timing applications, the standard configuration is a conical radome, however the option is available to request a low profile radome.
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Page 7: Ordering Information
Global Positioning System (GPS). 4 NMEA Packet Format The TW5343 serial interface is based on the NMEA-0183 protocol standard. The NMEA -0183 protocol starts with a “$” character followed by a NMEA Talker ID. “GP” indicates Talker ID for the GPS constellation “GL”... -
Page 8: Software Utilities
This VisualGPS application can log data which can subsequently be imported into the following data conversion application for easy display tracking data on Goggle maps: http://www.gpsbabel.org/ 6 Hardware Interface The TW5343 is provided with a 5 m cable terminated in a RJ45 connector. Figure 2 Wire Color Signal Comments... -
Page 9: Tw5343 Installation
TW5433 and provides a COM port connection to a PC vis USB bridge for testing purposes. Baud Rate The default output from the TW5343 is 5 digit resolution GGA, GSV and Usage messages at 115,200 baud. See section 11 for message format information. Minimum recommended baud rate is 4800 baud. -
Page 10: Power
• Connect the BROWN/WHITE wire on the TW5343 to Gnd 1PPS The TW5343 provides a one (1) pulse-per second output signal for timing purposes. Differential 1PSS outputs are provided at RS422 levels. The 1PPS signal can be synchronized to GPS or GLONASS reference times to an accuracy within 50 nanoseconds. - Page 11 The following examples are provided for termination of the 1PPS signals. Figure 6 The balanced driver in the TW5343 is an Intersil 3179E. Please check the data sheet for additional information. Note: 1 : To reduce jitter on the balanced line ensure that RS422 is the only selection, see section 10.1...
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Page 12: Wake Up Input
Wake Up Input The Wakeup input is pulled high by the TW5343. It must be left in this state to enter standby mode. When in standby, the wakeup input must be pulled to ground to cause the TW5343 to exit Standby mode and return to Navigation mode. -
Page 13: Initialize Gps Time
TW5382 User Manual As a rule of thumb the TW5343 should be on for 30 seconds every 30 minutes to guarantee a hot start of less than 10seconds. Note: For applications that need to conserve power by waking up quickly from standby mode and getting a fix as quickly as possible it is recommended that both GPS &... -
Page 14: Satellite Based Augmentation System (Sbas)
TW5382 User Manual 9 Satellite Based Augmentation System (SBAS) The TW5343 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. - Page 15 TW5382 User Manual Figure 7 More information can be found by clicking on the following link: http://www.navipedia.net/index.php/SBAS_Systems An example of SBAS use in the GAGAN region (India). To use this system the following configuration is required on the ‘Constellation’ tab. Enable SBAS (WAAS) SBAS Auto-search SBAS PRN...
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Page 16: Tw5343 Configuration
Please request application download link: Figure 8 Connect the PC to the TW5343 using the SDK Test Adaptor (33-0095-0) Set the TW5343 Configurator to the COM port speed of the TW5343 (115200 baud is default). Select Program/Read to read the parameters in the TW5343. -
Page 17: Interface Tab
10.1 INTERFACE TAB NMEA RS422 Baudrate: (default 115200) Sets the operating baud rate of the TW5343 on the RS422 port. If the baud rate is changed and written to the TW5343 remember to change the Configurator baud rate to match. - Page 18 TW5382 User Manual Use GNGSV in place of GLGSV or GPGSV: The GSV message can be configured to be output with GN talker ID. Use GNGSA in place of GLGSA or GPGSA: The GSA message are be configured to be output with GN talker ID. Decimal digits in GGA: Sets the number of decimal digits in GGA output.
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Page 19: Nmea Message Lists
TW5382 User Manual 10.3.1 NMEA MESSAGE LISTS The TW5343 will output messages that are specified in two sets of 3 lists. Messages from each list will output at different rates. Message List #1 rate: Sets message list #1 output rate. The rate is specified as the number of fixes between message outputs. -
Page 20: 10 Hz. Operation
TW5382 User Manual NMEA Message List 1 The basic output message list is shown in Figure 9. Additional outputs are available in expert mode, contact Tallysman for details. Message list 1 is the standard message list. Use message list 1 if the NMEA multiple output rate feature is not required. -
Page 21: Constellations
GPS is also selected, in which case, the talker ID will be “GN”). Enable SBAS (WAAS): When set and if data is currently received from an SBAS satellite, then the TW5343 includes the SBAS corrections in the calculated position. SBAS Auto-Search: (default ON) The TW5343 will automatically search for an appropriate satellite in view. -
Page 22: Tracking
TW5382 User Manual 10.5 TRACKING 2 D Fix: ( default off) Enables a two-dimensional GPS position fix that includes only horizontal coordinates (no GPS elevation). It requires a minimum of three visible satellites. Walking mode: (default off) The receiver engine uses different filters in walking mode i.e. does not include velocity in position calculations or accelerations that are not feasible by a pedestrian, and maintain accurate position in urban environments during lower operating speeds ( 0.5 to 3 m/sec) such as walking or even running. - Page 23 TW5382 User Manual A satellite must have a signal strength above this threshold to be included in a fix calculation. The default is 15, which helps reduce multi-path errors. Default 2D DOPS A low DOP value represents a better positional precision due to the wider angular separation between the satellites used to calculate a unit's position.
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Page 24: Pps Tab
TW5382 User Manual 10.6 1 PPS TAB 1PPS Enable: 1PPS is output when set. Invert 1PPS Polarity: The polarity of the 1PPS output is inverted. 1 PPS Hold Position: The configured Hold Position is used in Timing application as the current position. The accuracy and integrity of the timing solution is highly dependent on the accuracy of the reference position. - Page 25 TW5382 User Manual over an extended period (at the very least, 1 hour). Remember to scale this value by number of fixes per second. 1PPS Elevation Mask (degrees): Sets the elevation mask angle of 1PPS. 1PPS Satellite Threshold (snr): Fix quality evaluation only uses satellites above SNR threshold. 1PPS Fix condition: GNSS fix condition for PPS generation.
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Page 26: Standby Tab
TW5382 User Manual 10.7 STANDBY TAB Enable Periodic Standby: Enables the Standby mode low current consumption feature. Sleep Time (seconds) Sets the sleep time in seconds. Fix Time (seconds) Sets the navigation wake time to acquire a fix. In order to refresh satellite ephemeris data the receiver should be configured to transitions to full power every 30 minutes and can remain awake for up to 3 minutes. -
Page 27: Nmea Message Reference
TW5382 User Manual 11 NMEA Message Reference NMEA 0183 sentences are all ASCII. Each sentence begins with a dollar sign “$”. The first two letters following the “$” are the talker identifier. The next three characters are the sentence identifier, followed by a number of data fields separated by commas, followed by an optional checksum, and terminated by carriage return/line feed. -
Page 28: Gga
TW5382 User Manual 11.2 GGA Global Positioning System Fix Data Time, Position and fix related data for a GPS receiver. Fields : Universal Time Coordinated (UTC) Latitude Direction of latitude N or S (North or South) Longitude Direction of Longitude E or W (East or West) GPS Quality Indicator, 0 - fix not available, 1 - GPS fix,... -
Page 29: Gsa
TW5382 User Manual 11.3 GSA GPS DOP and active satellites Fields : Selection mode: M=Manual, forced to operate in 2D or 3D, A=Automatic, 3D/2D Mode (1 = no fix, 2 = 2D fix, 3 = 3D fix) PRN number, 01 through 32 for GPS, 33 through 64 for SBAS, 64+ for GLONASS ID of 1st satellite used for fix ID of 2nd satellite used for fix ID of 3rd satellite used for fix... -
Page 30: Gsv
TW5382 User Manual 11.4 GSV GSV - Satellites in view These sentences describe the sky position of a UPS satellite in view. Typically they’re shipped in a group of 2 or 3. Fields: Total number of GSV messages to be transmitted in this group Origin number of this GSV message within current group Total number of satellites in view (leading zeros sent) Satellite PRN number (leading zeros sent) -
Page 31: Vtg
TW5382 User Manual 11.5 VTG VTG - Track made good and Ground speed Fields : Track Degrees T = True relative to true North Track Degrees M = Magnetic Speed Knots N = Knots Speed Kilometers per Hour over ground K = Kilometers per Hour FAA mode indicator (NMEA 2.3 and later) Checksum... -
Page 32: Gngns
TW5382 User Manual 11.7 GNGNS Outputs GPS and Glonass information in the same message list GNSS capable receivers will also output this message with the GP and/or GL talker ID when using more than one constellation for the position fix. An example of the GNS message output from a GNSS capable receiver is: $GNGNS,014035.00,4332.69262,S,17235.48549,E,RR,13,0.9,25.63,11.24,,*70<CR><LF>... - Page 33 TW5382 User Manual 11.8 ZDA ZDA - Time & Date - UTC, day, month, year and local time zone Fields: UTC time (hours, minutes, seconds, may have fractional subsecond) Day, 01 to 31 Month, 01 to 12 Year (4 digits) Local zone description, 00 to +- 13 hours Local zone minutes description, apply same sign as local hours Checksum...
- Page 34 TW5382 User Manual 11.10 WAAS Example: $PSTMSBAS,1,2,133,,,43*2C Fields: Status ( 1= WAAS ON) Acquire flag Elevation Azimuth Example: $PSTMSBASCH,0,133,,,26*76 $PSTMSBASCH,1,0,0,,,,*42 Fields: Channel # (up to two SBAS channels tracked) Elevation Azimuth...