Untitled - Sintrade AG
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1. General description of what GPS is and how it works GPS Global Positioning System is the only system today able to show you your exact position on the Earth anytime in any weather anywhere GPS satellites 24 in all orbit at 11 000 nautical miles above the Earth They are continuously monitored by ground stations located worldwide The satellites transmit signals that can be detected by anyone with a GPS receiver Using the receiver you can determine your location with great precision The satellites are positioned so that we can receive signals from six of them nearly 100 percent of the time at any point on Earth You need that many signals to get the best position information Satellites are equipped with very precise clocks that keep accurate time to within three nanoseconds that s 0 000000003 or three billionths of a second This precision timing is important because the receiver must determine exactly how long it take s for signals to travel from each GPS satellite The receiver uses this information to calculate its position Although GPS was designed for military use many thousands of civi lians make use of it The satellites actually broadcast two signals one is only formilitary use and one can be used by both military and civilians Since GPS is passive you only need to receive the signal there are no restrictions on who can use the signal available to civilians GPS technology can be used in avari2. As long as enough satellite signals are received to generate valid position fixes the 1PPS output remains synchronized to the GPS second and the 1PPS Valid Signal remains active If signal blockage prevents the receiver from generating valid position fix the 1PPS output will drift away from the GPS second and the 1PPS Valid Signal will become inactive Upon re acquiring enough satellites to generate consecutive valid position fixes the 1PPS Valid Signal will become active again signaling that the 1PPS output is again synchronized with the GPS second For best stable operation of the 1PPS signal it is to be operated in static environment having clear view of the sky SECTION 4 SOFTWARE INTERFACE This section describes the details of the serial port commands through which the HI 203E is controlled and monitored The serial port commands allow users to set the receiver parameters configure output message type and retrieve status information The baud rate and protocol of the host COM port must match the baud rate and protocol of the GPS receiver serial port for commands and data to be successfully transmitted and received The default receiver protocol is 4800baud 8 data bits 1 stop bit and none parity 4 1 NMEA OUTPUT MESSAGE SPECIFICATION The HI 203E supports NMEA 0183 output format as defined by the National Marine Electronics Association http www nmea org The currently supported NMEA messages for GPS applications are
3. GPS navigation output RX Serial port input Vcc Power supply input 3 8V 8 0V DC unregulated The following is a functional description of the pins on the 6 pin interface connector Pin 1 TX Serial port output GPS navigation output Pin 2 RX Serial port input Pin 3 Vcc Power supply input 3 8V 8 0V DC unregulated Pin 4 GND Ground Pin 5 1PPS Valid Signal 1 Valid O Invalid Pin 6 1PPS 10 11 3 4 ONE PULSE PER SECOND 1PPS OUTPUT The one pulse per second output is provided for applications requiring precise timing measurements The output pulse is 1usec in duration Rising edge of the output pulse is accurate to 1usec with respect to the start of each GPS second Accuracy of the one pulse per second output is maintained only when the GPS receiver has valid position fix The 1PPS output is always generated when the GPS receiver is powered on Proper adjustment of the 1PPS output to align with the GPS second requires calculation of the receiver clock offset and clock drift rate as part of the position velocity time PVT solution When enough satellite signals are received to generate valid position fixes the 1PPS output is adjusted to align with the GPS second in several seconds When the 1PPS output is brought in sync with the GPS second the 1PPS Valid Signal on the I O pin becomes active HIGH when the 1PPS output is not yet in sync with the GPS second the 1PPS Valid Signal remains inactive LOW
4. GGA Global Positioning System Fix Data GLL Geographic Position Latitude Longitude GSA GNSS DOP and Active Satellites GSV GNSS Satellites in View RMC Recommended Minimum Specific GNSS Data VTG Course Over Ground and Ground Speed 4 1 1 NMEA Checksum Calculation The optional NMEA checksum can be enabled or disabled when setting up the NMEA protocol The checksum consists of a and two hexidecimal digits derived by exclusive OR of all the characters between but not inlcuding the and characters 12 13 APPENDIX B DEFAULT VALUES The product has the following factory preset default values Datum 000 WGS 84 000 WGS 84 NMEA Enable Switch GGA ON GLL OFF GSA ON GSV ON RMC ON VTG OFF Checksum ON Baud Rate 4800 Baud Elevation Mask DOP Mask 5 degrees DOP Select Auto GDOP 20 PDOP 15 HDOP 8 Receiver Operating Mode Normal Mode without 1PPS Commands can be issued to the HI 203E to change the settings of the receiver The new settings will remain effective on next power on as long as the on board rechargeable backup battery is not discharged After the backup battery is discharged factory preset default settings will be used TROUBLESHOOTING Reasons Solutions No Position output timer counting is Weak or no GPS signal place of HI 203E unit Connect an external but can be received at the antenna to HI 203E and place the antenna unde
5. consumption Compact design suitab le for applications requiring small space On board rechargeab le battery sustained real time clock and memory for fast satellite acquisition during power up High accur acy one pulse per second output e Suppor ts NMEA 0183 protocol Full na vigation accuracy achievable with Standard Positioning Service Optimiz ed for navigation in urban canyon environments A utomatic cold start with no user initialization required SECTION 2 RECEIVER OPERATION Upon power up after initial self test has completed the HI 203E will begin satellite acquisition and tracking process Under normal open sky condition position fix can be achieved within approximately 45 seconds within 15 seconds if valid ephemeris data is already collected from recent use After receiver position has been calculated valid position velocity and time information are transmitted through the on board serial interface The receiver uses the latest stored position satellite data and current RTC time to achieve rapid GPS signal acquisition and fast TTFF If the receiver is transported over a large distance across the globe cold start automatic locate sequence is invoked The first position fix may take up to five minutes searching the sky for the GPS signal The acquisition performance can be improved significantly if the host initializes the receiver with a rough estimate of time and user position As soon as GPS signal is acquire
6. C Operating Humidity 5 to 95 Primary Power 3 8V 8V DC Current Consumption Serial Interface 125mA 3 3V RS 232 Protocol 4800 9600 baud 8 None 1 NMEA 0183 v2 20 4800 9600 baud 8 None 1 Datum 219 standard datum default WGS 84 Antenna On Board Patch Antenna NMEA Message GGA GLL GSA GSV RMC and VTG Dimension 2 2 LED INDICATOR LED off 41mm x 58mm x 20mm W x L x H Receiver Switch Off LED flashing Signal Searching LED on 3D Position Fixed SECTION 3 HARDWARE INTERFACE 3 1 MECHANICAL DIMENSIONS Unit mm Top View A 41 0 2 I O Cable Lateral View 20 0 2 x I O Cable as Bottom View LED indicator 41 0 2 I O Cable CPU a 3 2 RF MODULE HARDWARE INTERFACE LJ LI EJ 03 DJ 0J EJ LJ EJ CJ Y 5 Desciption NC NC Vcc Input 3 3V CTRL Input signal for RF module power saving control GND Power and signal ground REF Out 16 367MHz reference output GND Power and signal ground IF Out 4 092MHz IF signal output OINI RI PM NC E o NC 3 3 BASEBAND HARDWARE INTERFACE _ o 0 No OC 5 Q N L DL L u L L L L L E E o The 10 pin connector is the same as the RF connector A1 A2 A3 B1 B2 B3 GND Ground 1PPS Valid Signal 1 Valid O Invalid 1PPS TX Serial port output
7. d and tracked the HI 203E will transmit valid navigation information through its serial interface The navigation data contains following information Receiver position in latitude longitude and altitude Receiver velocity e Time DOP error magnification factor GPS signal tracking status The HI 203E will perform 3D navigation when four or more satellites are tracked When three or fewer satellites are tracked altitude hold is enabled using the last computed altitude and 2D navigation mode is entered With signal blockage or rising and setting of the satellites where a change in satellite constellation used for position fix occurred large position error may result The HI 203E incorporates a proprietary algorithm to compensate the effect of satellite constellation change and maintains an accurate smooth estimate of the receiver position velocity and heading 2 1 RECEIVER SPECIFICATIONS FEATURES DESCRIPTIONS General L1 frequency C A code 12 channel Sensitivity Update Rate 165 dBW minimum 1Hz Accuracy Position 25m CEP without S A Velocity 0 1 sec without S A Acquisition Cold start 150sec typical Warm start 45sec typical Hot start lt 15sec Reacquisition 100msec Dynamics Altitude 1000m to 18000m Velocity 500m sec Acceleration g Operation Temperature 20 C to 75 C Storage Temperature 55 C to 90
8. dheld PC running with suitable mapping and routing software for navigation 1 1 Standard Package Before you start up make sure that your package includes the following items If any items are missing or damaged contact your dealer immediately e HI 203E GPS Receiver unit e Suction CUP e User Manual CD including User Manual HaiTest Testing Program Optional Accessories e PS II to PDA connector and car charger e PS II to DB9 adapting cable e PS II to USB adapting cable HI 203E XXXX HI 203E USB Pocket PC Plug HI 203E DB9 SECTION 1 INTRODUCTION 1 1 OVERVIEW The HI 203E GPS Receiver is intended for use in a wide range of applications The receiver simultaneously tracks up to twelve satellites provides accurate satellite positioning data with fast time to first fix TTFF and low power consumption It is designed for high performance and maximum flexibility in a wide range of applications including mobile asset tracking in vehicle automotive guidance location sensing telematics and so on The highly integrated receiver achieves high performance minimizes board size and power consumption requirements The HI 203E is designed to withstand harsh operating environments however it should be used inside an enclosure as a part of the application product designed by the system integrator 1 2 FEATURES The HI 203E GPS receiver offers following features T welve parallel tracking channels e Fast TTFF and low power
9. ety of fields besides providing navigation for vehicles on the sea in the air and on the ground GPS applications also include keeping track of where afleet of trucks trains ships or planes are and how fast they are moving directin gemergency vehicles to the scene of an accident mapping where a city s assets are located and providing precise timing for endeavors that require large scale coordination GLOBAL POSITIONING SYSTEM HI 203E GPS RECEIVER Pin Assignment 1800 30mm Connectors tor White 4 wire 3 6 0 1mm Pocket PC HI 203E PS II GPS receiver Can Connecting to a female PS II Connector One end from the female Connector is 12V car charger charging PDA and GPS receiver simultaneously the other end form the female PS II connector is the PDA connector for connecting your PDA For notebook PC use HI 203E PS II can also connect with a PS II to DB9 PS 232 serial cable or USB connector A 3HI 203E Series Introducti HI 203E is a GPS receiver with PS II mini DIN interfaces and built in active antenna for high sensitivity to tracking signal HI 203E is well suited to system integration and users who use any kinds of mobile devices such as PDA notebook PC Tablet PC etc It satisfies a wide variety of applications for car navigation personal navigation or touring devices tracking and marine navigation purpose Users can simply plug it into a PDA or other type of han
10. r a open space then press Reset At outdoor space but GPS signal is blocked by building or car roof To try again go to outdoor and press Heset or connect external antenna on the side of HI 203E to improve the poor GPS signal Execute Fail Wrong CPU type PocketPC support multiple typs of CPU Make sure you download the correct testing or mapping software You can use the PDA smart menu s setting function to see wether the CPU type is correct or not Can s open COM port The PS II connector did not insert correctly or some other application is the COM port Insert all HI 203E connector firmly or close all other application that occupied the COM port Can not find HI 203E Poor connection Check HI 203E if firmly insert No signal No action for few minites may causes PocketPC into the power saving mode It could close the COM port at the same time Close all applications and exacute it again to re open the COM port Weak or no GPS signal when using HI 203E indoor or inside the car Put HI 203E to an open space or car roof then press the Reset button Offizielle Vertretung Schweiz Sintrade AG Kriesbachstrasse 30 CH 8600 D bendorf www sintrade ch
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