User manual HAICOM HI-204III

HI-204III Ultra High Sensitive Mini-DIN GPS Receiver HI-204III WATERPROOF Ultra High Sensitive GPS Receiver 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 by the Earth. They are continuously monitored 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. 2 Although GPS was designed for military use, many thousands of civilians make use of it. The satellites actually broadcast two signals, one is only for military use, and the other 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 a variety 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 a fleet 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. 3 GLOBAL POSITIONING SYSTEM HI-204III GPS RECEIVER Pin Assignment Connectors 1 3 5 1800±30mm 1 2 2 4 6 PS/2 Connector Color Green White Red Black Function TX RX VCC GND CN1 5 4 2 1 2 1 Mini Din: 6 pin male connector Wire: 3.6 ± 0.1mm 4 Pocket PC HI-204III 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-204III PS/II can also connect with a PS/II to DB9 PS-232 serial cable or USB connector. 5 1. HI-204III Series Introductions HI-204III is a GPS receiver with PS/II mini-DIN interfaces and built-in active antenna for high sensitivity to tracking signal. HI-204III 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 handheld 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. · HI-204III GPS Receiver unit · Suction CUP · User Manual CD (including User Manual, HaiTest Testing Program) 6 Optional Accessories: · PS/II to PDA connector and car charger · PS/II to DB9 adapting cable · PS/II to USB adapting cable HI-204III -XXXX (Pocket PC Plug) HI-204III -DB9 HI-204III -USB 7 SECTION 1 INTRODUCTION 1.1 OVERVIEW Fast Acquisition Enhanced Sensitivity 20 Channels "All-In-View" Tracking GPS Sensor Module The receiver continuously tracks all satellites in view and provides accurate satellite positioning data. The HI-204III is optimized for applications requiring good performance, low cost, and maximum flexibility; suitable for a wide range of OEM configurations including handhelds, sensors, asset tracking, PDA-centric personal navigation system, and vehicle navigation products. Its 20 parallel channels and 4000 search bins provide fast satellite signal acquisition and short startup time. Tracking sensitivity of -159dBm offers good navigation performance even in urban canyons having limited sky view. 8 Satellite-based augmentation systems, such as WAAS and EGNOS, are supported to yield improved accuracy. Both the LVTTL-level and RS232-level serial interface are provided on the interface connector. Supply voltage of 3.3V, or 3.8V~12V are supported. 1.2 Features · 20 parallel channel GPS receiver · 4000 simultaneous time-frequency search bins · SBAS (WAAS, EGNOS) support · -159dBm tracking sensitivity · < 8 second hot start · < 40 second cold start 9 SECTION 2 RECEIVER OPERATION Upon power up, after initial self-test has completed, the HI-204III will begin satellite acquisition and tracking process. Under normal open-sky condition, position-fix can be achieved within approximately 35 seconds (within 10 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 automaticlocate sequence is invoked. The first position fix may take up to 50 sec 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. 10 As soon as GPS signal is acquired and tracked, the HI-204III will transmit valid navigation information through its serial interface. The navigation data contains following information: · Receiver position in latitude, longitude, and altitude · Receiver velocity · Time · DOP error-magnification factor · GPS signal tracking status The HI-204III 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-204III 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. 11 2. Technical Specifications 2.1. Electrical Characteristics Chipset General Items GSP3F Frequency C/A code Channels Position Accuracy Velocity Time Default Other Reacquisition Snap start Hot start Warm start Cold start Altitude Velocity Acceleration Jerk Main power input Description SiRF StarIII technology L1, 1575.42 MHz 1.023 MHz chip rate 20 10 meters, 2D RMS 5 meters 2D RMS, WAAS corrected <5meters(50%), DGPS corrected 0.1 meters/second 1 microsecond synchronized to GPS time WGS-84 selectable for other Datum 0.1 sec., average 1 sec., average 8 sec., average 38 sec., average 42 sec., average 18,000 meters (60,000 feet) max. 515 meters/second (1000 knots) max. 4g, max. 20 meters/second3, max. 5V DC input. Datum Acquisition Rate (Open Sky & Stationary Requirements) Dynamic Conditions Power Dimension Weight Power consumption 0.38 W (continuous mode) Supply Current 75mA Backup power 3 V Lithium-Ion rechargeable battery 43mm L x 42mm W x 13mm H 23g 2.2 LED INDICATOR LED flashing 0.25Hz LED flashing 1Hz Signal Searching Position Fixed 12 SECTION 3 HARDWARE INTERFACE 3.1 MECHANICAL DIMENSIONS Unit:mm Top View 69±0.2 I/O Cable Build-in patch antenna Lateral View 20±0.2 I/O Cable Bottom View LED indicator 69±0.2 I/O Cable CPU Magnetic 73±0.2 13 3.2 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). 14 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. 15 SECTION 4 SOFTWARE INTERFACE This section describes the details of the serial port commands through which the HI-204III 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 4800 bps, 8 data bits, 1 stop bit, and none parity. 4.1 NMEA OUTPUT MESSAGE SPECIFICATION The HI-204III 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: 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 16 4.1.1 NMEA Messages The serial interface protocol is based on the National Marine Electronics Association's NMEA 0183 ASCII interface specification. This standard is fully define in "NMEA 0183, Version 3.01" The standard may be obtained from NMEA, www.nmea.org 4.1.2 GGA - GPS FIX DATA Time, position and position-fix related data (number of satellites in use, HDOP, etc.). Format: $GPGGA,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>, M,<10>,M,<11>,<12>,*<13> Example: $GPGGA,104549.04,2447.2038,N,12100.4990,E,1,06, 01.7,00078.8,M,0016.3,M,,*5C 17 Field Example Description 1 104549.04 UTC time in hhmmss.ss format, 000000.00 ~ 235959.99 2 2447.2038 Latitude in ddmm.mmmm format Leading zeros transmitted 3 N Latitude hemisphere indicator, 'N' = North, 'S' = South 4 12100.4990 Longitude in dddmm.mmmm format Leading zeros transmitted 5 E Longitude hemisphere indicator, 'E' = East, 'W' = West 6 1 Position fix quality indicator 0: position fix unavailable 1: valid position fix, SPS mode 2: valid position fix, differential GPS mode 7 06 Number of satellites in use, 00 ~ 12 8 01.7 Horizontal dilution of precision, 00.0 ~ 99.9 9 00078.8 Antenna height above/below mean sea level, -9999.9 ~ 17999.9 10 0016.3 Geoidal height, -999.9 ~ 9999.9 11 Age of DGPS data since last valid RTCM transmission in xxx format (seconds) NULL when DGPS not used 12 Differential reference station ID, 0000 ~ 1023 NULL when DGPS not used 13 5C Checksum Note: The checksum field starts with a '*' and consists of 2 characters representing a hex number. The checksum is the exclusive OR of all characters between '$' and '*'. 18