HI-204III-USB
Contents
1. HI 2041Il USB AN Ultra High Sensitive USB GPS Receiver USER Manual General description of what ccc c ccc c cc ccc ecce eee eee oaeee eaae eee e 1 GPS is and how it works HI 204III USB Series Introductions u 4 TROUBLESHOOTING ccc cs c e e eee ee eane ee eee eee eee eee SNN KAKA 27 A INTRODUCTION OF GPS USB DRIVER FILES 29 B WINDOWS 98 INTERFACE ln 32 1 Install GPS USB Driver o 32 2 Check Enable COM Port Number ee 38 3 Remove GPS USB Driver L 44 C WINDOWS XP INTERFACE ccc c cc c ceann aaeeea eee 45 1 Install GPS USB Driver 22 aaa 45 2 Check Enable COM Port Number eee 48 3 Remove GPS USB Driver 0 0 cece cece eeeee eee eeeeees 55 D CHANGE COM PORT NUMBER APPLICATION PROGRAM c 56 E IMPORTANT REMARK aa bank 58 HI 204III USB WATERPROOF Ultra High Sensitive USB GPS Receiver M N SSS N oe 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 Th2. 28 USB to Serial Bridge Properties Screen 3 Remove GPS USB Driver If you want to update the USB driver you should remove existing driver and install new one Step 1 Remove GPS USB driver by double clicking the icon show in Figure 29 A dialog window shown in Figure 30 will be pop up iDRemove198 l Resesesnzesenensmesenzennonennensed Figure 29 GPS USB Driver remove icon Step 2 Click OK button Figure 30 Remove Driver Screen Step 3 Click Yes button A mara eand je mall maa re boot BN d gwi dale bea hra m erb hare L i Driver Remove Warning Screen Figure 31 N D Change COM Port Number Application Program If the notebook assigns COM number to COMB then can to execute SetCOM exe for COM number change Step 1 For change COM port number assign bv double clicking icon show in Figure 32 and then small icon shown in Figure 34 will be pop up K net OM exe Figure 32 SetCOM exe Icon BANAAG PM 0141 Figure 33 Start bar on the right below corner of screen ey BBB aA R T Figure 34 Start bar on the right below corner of screen Step 2 by clicking the icon show in Figure 34 a dialog window shown in Figure 35 will be pop up COM port stop program ver 0 0 4 Device Description Por C MM COMI COMI C ERGERE COND COM2 C USB to Serial Port COMB COM3 G None None None Nona None None No
3. contiune E USB_DRIVER SERWPL INF Figure 7 Win 98 Automatic Installation Driver Screen Click the Finish button Add New Hardware Wizard Prolific USB to Senal Brid ge a Windows has finished installing the software for new hardware device lt Beck Fish o Cancel Figure 8 Win 98 Automatic Installation Driver Screen 2 Check Enable COM Port Number After you install GPS USB driver you should know which COM port is available and check enabled COM port number You need to know the COM port assignment for the GPS receiver when configuring map or chart software Please notice that this remark is very important if not configured properly the mapping software will not communicate with the GPS receiver To check your assigned COM port for the GPS receiver please follow the instructions below Step 1 Check enabled COM port number by double clicking the icon show in Figure 9 and then a dialog window shown in Figure 10 will be pop up L a PEE My Computer Figure 9 My Computer Icon Step 2 Double click the Control Panel icon E My Computer Select an item to view its description Figure 10 My Computer Screen HAiCOM GPS f N Step 3 Double click the System icon Control Panel F FOTWATA Add New Hardware Adds new hardware to Figure 11 Control Panel Screen Step 4 Press Device Manager b
4. number You need to know the COM port assignment for the GPS receiver when configuring map or chart software Please notice that this remark is very important if not confingured properly the mapping software will not communicate with the GPS receiver TO check your assigned COM port for the GPS receiver please follow the instructions below Step 1 Check enabled COM port number by clicking Start clicking Control Panel gt double clicking System icon Step 2 Select Hardware 5yslem Properties 000 comet so Figure 23 System Properties Screen Step 3 Select Device Manager 5yslem Properties NM da re Prolind HM dare poolis parade a priy ho pou bo agl ap amd pime T Sievert Pana in Figure 24 System Properties Screen Step 4 Select Ports COM amp LPT Figure 25 Device Manager Screen Step 5 Select COM4 Device Manager Be ason we b EF P A zra Figure 26 Device Manager Screen Step 6 Select Driver Prolific IBB ta Sertal Bridge COM4 Properties Figure 27 USB to Serial Bridge Screen Step 7 Browse COMA4 properties Prolific IBB ta Sertal Bridge DOMNA Properties Ta veow detala aboul the diver Mos Ta update the dives for this device ll the device lali alter updating the drives roll back io the recul installed driver To urirakal tha dne james Figure
5. satellites in view PRN number elevation angle azimuth angle and C No Only up to four satellite details are transmitted per message Additional satellite in view information is sent in subsequent GSV messages Format GPGSV lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt 8 gt lt CR gt lt LF gt Example SGPGSV 2 1 08 26 50 016 40 09 50 173 39 21 43 316 38 17 41 144 42 7C lt CR gt lt LF gt GPGSV 2 2 08 29 38 029 37 10 27 082 32 18 22 309 24 24 09 145 7B lt CR gt lt LF gt Field Example Description 1 2 Total number of GSV messages to be transmitted 2 1 Number of current GSV message 3 08 Total number of satellites in view 00 12 4 26 Satellite PRN number GPS 01 32 SBAS 33 64 33 PRN120 50 Satellite elevation number OO 9O degrees 016 Satellite azimuth angle 000 359 degrees O 4 C No 00 99 dBNull when not tracking 7C Checksum 4 1 6 RMC RECOMMANDED MINIMUM SPECIFIC GPS TRANSIT DATA Time date position course and speed data Format GPRMC lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt 8 gt lt 9 gt lt 10 gt lt 11 gt lt 12 gt lt 13 gt lt CR gt lt LF gt Example SGPRMC 104549 04 A 2447 2038 N 12100 4990 E 016 0 221 0 250304 003 3 W A 22 lt CR gt lt LF gt Example Description 104549 04 UTC time in hhmmss ss format 000000 00 235
6. 2447 2038 N 12100 4990 E 1 06 01 7 00078 8 M 0016 3 M 5C lt CR gt lt LF gt Example Description 104549 04 UTC time in hhmmss ss format 000000 00 235959 99 2447 2038 Latitude in ddmm mmmm format Leading zeros transmitted Latitude hemisphere indicator N North S South 12100 4990 Longitude in dddmm mmmm format Leading zeros transmitted Longitude hemisphere indicator E East W West 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 OO 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 0016 3 Geoidal height 999 9 9999 9 Age of DGPS data since last valid RTCM transmission in xxx format seconds NULL when DGPS not used Differential reference station ID 0000 1023 NULL when DGPS not used 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 4 1 3 GLL LATITUDE AND LONGITUDE WITH TIME OF POSITION FIX AND STATUS Latitude and longitude of current position time and status Format GPGLL lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt 8 gt lt CR gt lt LF gt Example SGPGLL 2447 2073 N 12100 5022 E 10
7. 4548 04 A A 65 lt CR gt lt LF gt Example 244 7 2073 12100 5022 104548 04 8 65 Description Latitude in ddmm mmmm format Leading zeros transmitted Latitude hemisphere indicator N North S South Longitude in dddmm mmmm format Leading zeros transmitted Longitude hemisphere indicator E East W West UTC time in hhmmss ss format O00000 00 235959 99 Status A valid position V navigation receiver warning Mode indicator N Data invalid D Differential A Autonomous E Estimated Checksum 4 1 4 GSA GPS DOP AND ACTIVE SATELLITES GPS receiver operating mode satellites used for navigation and DOP values Format GPGSA lt 1 gt lt 2 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt CR gt lt LF gt Example GPGSA A 3 26 21 09 17 10 8 02 1 10 6 07 lt CR gt lt LF gt Example Description A Mode M Manual A Automatic Fix type 1 not available 2 2D fix 3 3D fix 26 21 09 PRN number 01 to 32 of satellite eee used in solution up to 12 transmitted 4 10 8 Position dilution of precision 00 0 to 99 9 5 02 Horizontal dilution of precision 00 0 to 99 9 6 10 A 6 Vertical dilution of precision OO O to 99 9 7 07 Checksum 4 1 5 GSV GPS SATELLITE IN VIEW Number of
8. 959 99 Status V navigation receiver warning A valid position 244 7 2038 Latitude in dddmm mmmm format Leading zeros transmitted Latitude hemisphere indicator N North S South 12100 4990 Longitude in dddmm mmmm format Leading zeros transmitted Longitude hemisphere indicator E East W West 7 016 0 Speed over ground 000 0 999 9 knots 10 003 3 Magnetic variation 000 0 180 0 degrees W Magnetic variation direction E East W West Mode indicator N Data invalid D Differential A Autonomous E Estimated Checksum 4 1 7 VTG COURSE OVER GROUND AND GROUND SPEED Velocity is given as course over ground COG and speed over ground SOG Format GPVTG lt 1 gt T lt 2 gt M lt 3 gt N lt 4 gt K lt 5 gt lt 6 gt lt CR gt lt LF gt Example GPVTG 221 0 T 224 3 M 016 0 N 0029 6 K A 1F lt CR gt lt LF gt Example Description 221 0 True course over ground 000 0 359 9 degrees 224 3 Magnetic Course over ground 000 0 359 9 degrees 016 0 Speed over ground 000 0 999 9 knots 0029 6 Speed over ground 0000 0 1800 0 kilometers per hour Mode indicator N Data invalid D Differential A Autonomous E Estimated 6 1F Checksum APPENDIX B DEFAULT VALUES The product has the following factorv preset default values Datum 000 WGS 84 NMEA Enable Switch GGA ON 1 sec output GLL OFF GSA ON 5 sec outp
9. cked the HI 204III USB will transmit valid navigation information through its serial interface The navigation data contains following information e Receiver position in latitude longitude and altitude e Receiver velocity e Time DOP error magpnification factor GPS signal tracking status The HI 204III USB 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 USB 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 Technical Specifications 2 1 Electrical Characteristics Items Description GSP3F SIRF Starlll technology Frequency L1 1575 42 MHz C A code 1 023 MHz chip rate Channels 20 Accuracy Position 10 meters 2D RMS 5 meters 2D RMS WAAS corrected lt 5meters 50 DGPS corrected Velocity 0 1 meters second Time 1 microsecond synchronized to GPS time Datum Default WGS 84 Other selectable for other Datum Acquisition Rate Open Sky amp Stationary Requi
10. cute it again to re open the COM port Weak or no GPS signal when using HI 204III USB indoor or inside the car Put HI 204III USB to an open space or car roof then press the Reset button USB Driver Setup Guide HI 204III USB USB GPS Receiver A Introduction of GPS USB Driver Files The USB GPS driver group consists of 6 files Files Name Description of Specific Property DRemover98 2K exe Type Application This execution file removes GPS USB driver from the PC Serwpl inf Type Setup Information This file provides major setup information Win2K ser2pl sys Type System File This file provides Windows 2000 and Windows XP hardware specific interface Win98_ME ser9pl sys Type System File This file provides Windows 98 and Windows Millennium hardware specific interface Win98_ME serspl inf Type Setup Information This file provides Windows 98 and Windows Millennium setup information Win98_ME serspl vxd Type Virtual Device Driver This file is virtual device driver Pal RTH ween ko nK XP Wmn38 ME DAHemowag Select s elect an item to view Serwpl its description Select an item to view its description Figure 2 Screen of GPS USB Driver Win 2000 and Win XP jifOvstem File A ME Serspl vxd Virtual device Madified 5 29 07 6 25 PM Size 27KB Figure 3 Screen of GPS USB Driv
11. e 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 000000008 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 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 thev are moving directin gemergencv vehicles to the scene of an accident mapping where a citv s assets are located and providing precise timing for endeavors that require large scale coordination 1 HI 204III USB Series Introductions HI 204I USB is a GPS receiver with USB in
12. e this location in the search OR Browse to specific GPS USB driver location Found Hew Hardware Wizard add bors bio ho rnd ca rnr thee dll reanch shieh includes beg eda The besi dme Land sal be inisial Beach mamowabile mada floppy CO AUM ie Ineluda bi aior in a ssarchi ETT lt L Dont seach vad chones the dra Io mahal Chase thie prz to pokes tha dewza dhas froma lel rdu dor na arr arles iha Te diver pou chons vad ba a badi mach la pour herders Me Figure 19 Win XP Automatic Installation Driver Screen Step 3 Click Continue Anyway button Hardware Irnitallat born Tha Gma teu 6 got stra o iii Kadeneg Step 4 Finish screen Found New Hardware Wizard Figure 21 Completing the Found New Hardware Wizard The mizand has finished imstalina the software kar 3 Peolifu USR 40 5arisl Bridge Click Finish bo C EE the wizard Win XP Automatic Installation Driver Screen Step 3 Click Continue Anyway button Figure 22 Hardware Installat bam Tra piese amu ma gut gro l thay Kang Pasig UGH 45 5 mad R dge has mat panned indore Lingo testing lo vezu ki compatiblity VE W reat XP IT el ma lai Ha 1675 S iail ana Cenimy poi nalallabon of thes Yelena n map mpag Win XP Automatic Installation Driver Screen 2 Check Enable COM Port Number After you install GPS USB driver you should know which COM port is available and check enabled COM port
13. er Win 98 and Win ME Group B Windows 98 Interface 1 Install GPS USB Driver Before the installation of GPS USB driver there are three procedures required The first thing is to turn on PC in the Windows environment The second thing is to copy USB driver into HDD The third thing is to plug the GPS receiver into the USB port of PC and then follow the installation guide Click the Next button Add New Hardware Wizard 00 This wizard helps you install software for USB Device Drivenis a kind of software It s purpose let hardware device active lt Back Figure 4 Win 98 Automatic Installation Driver Screen Select Automatically and click the Next button Install the software automatically Recommended C Install from a list or specific location Figure 5 Win 98 Automatic Installation Driver Screen Specific driver location and click the Next button Windows will now search hard disk driver and specific location press Next begin search F Floppy l CD ROM FF Microsoft Windows Update FF Specitic Location POS O lt l lt Back Figure 6 Win 98 Automatic Installation Driver Screen HAiCOM Click the Next button Add New Hardware Wizard Windows driver file search device Prolif USB to Senal Brid ge Windows now ready to install this device be chosen driver please press Back to choose other driver press Next to be
14. er 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 pa Ws 77 NA bi A 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 HiI 204III USB is controlled and monitored The se
15. ne None None None None None None None Change to P COML f COMS f CON C COME f COM3 C COM C COM4 C COMB BR R RRR RS R Figure 35 COM port number change screec Step 3 for example change COM3 become COMA first Click COMB3 and COM4 then Click Set button COM port setup program ver 1 0 0 4 Device Description Por C MM COM1 COMI C RIE COM COM2 E USB to Serial Port COMB COM3 None None Mone None None None None None E None None None None None None Exit Change to COMI C COMS C COM2 COMB C COM3 C COME COMA C COMB R R RRR RS R Figure 36 COM port number change screec Step 4 Click Yes button O COM port is changed successfully Do you want to reboot now Figure 37 FO Notification Screen i HAiCO Ses Ti L E Important Remarks 1 3 If your system is Windows Millennium please refer to Windows 98 installation guide If your system is Windows 2000 please refer to Windows XP installation guide If you follow the steps but the GPS receiver doesn t work please try to unplug the GPS receiver from the USB port wait for 5 8 seconds and re plug the GPS receiver into your PC Occasionally the mouse cursor does not work properly when you run the Win2000 and Win XP and this situation is owing to Win2000 and Win XP operating system instead of the GPS receiver Microsoft announces that this situati
16. on is the serial device may be detected as a serial mouse in Win2000 and Win XP 4 If your GPS receiver is recognized as a Microsoft serial mouse there are two ways and you can choose either one to solve the problem The first is to unplug the GPS receiver from PC wait for 5 8 seconds and re plug the GPS receiver into your PC The second is to disable this serial mouse you can follow the step by step instructions below Click start gt click Control Panel gt double click system icon click Hardware gt click Device Manager click Mouse gt select the wrong mouse gt click your real mouse right button gt disable the wrong mouse Should you have any additional question regarding the operation of USB GPS receiver please feel free to contact your correspondent sales representative It is important that you record what problems you encounter and what error messages occur at that point so that the technical support people can detect your problems more efficiently WATERPROOF USB GPS Receiver 10635 51754
17. rements Reacquisition 0 1 sec average Snap start 1 sec average Hot start 8 sec average Warm start 38 sec average Cold start 42 sec average Dynamic Conditions Altitude 18 000 meters 60 000 feet max Velocity 515 meters second 1000 knots max Acceleration 4g max Jerk 20 meters second3 max Main power input Power consumption 5V DC input 0 38 W continuous mode Supply Current 7ZBMA Backup power 3 V Lithium lon rechargeable battery Dimension 43mm L x 42mm W x 13mm H Weight 23g 2 2 LED INDICATOR LED flashing 0 25Hz Signal Searching LED flashing 1Hz Position Fixed SECTION 3 HARDWARE INTERFACE 3 1 MECHANICAL DIMENSIONS Unit mm Top View 69 0 2 I O Cable 1 KS A N NA IG Build in patch antenna Lateral View 2040 2 O Cable Bottom View LED indicator 69 0 2 O Cable 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 4 1usec with respect to the start of each GPS second Accuracv 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 Prop
18. rial 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 USB 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 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 fullv define in NMEA 0183 Version 3 01 The standard mav 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 lt 1 gt lt 2 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt 8 gt lt 9 gt M lt 10 gt M lt 11 gt lt 12 gt lt 13 gt lt CR gt lt LF gt Example GPGGA 104549 04
19. terfaces and built in active antenna for high sensitivity to tracking signal HI 204III USB is well suited to system integration and users who use any kinds LaptopPC 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 LaptopPC 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 204III USB GPS Receiver unit e Suction CUP e User Manual CD including User Manual HaiTest Testing Program USB port For notebook PC use HI 204III USB connect with a LaptopPC USB port 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 USB 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 sensitivit
20. ut GSV ON 5 sec output RMC ON 1 sec output VTG ON 1 sec output Checksum ON Baud Rate 4800 Baud Elevation Mask 5 degrees DOP Mask DOP Select Auto GDOP 10 PDOP 10 HDOP 10 Receiver Operating Mode Normal Mode without 1PPS Commands can be issued to the HI 204Ill 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 No Position output but timer is counting Weak or no GPS signal can be received at the place of HI 204III USB unit Place the HI 204III USB under an open space then press Reset At outdoor space but GPS signal is blocked bv building or car roof To trv again go to outdoor and press Reset or connect external antenna on the side of HI 204III USB to improve the poor GPS signal Can s open COM port The PS II connector did not insert correctly or some other application is the COM port Plug HI 204III USB connector firmly or close all other application that occupied the COM port Can not find Hl 2041Il USB Poor connection Check HI 204III USB if Plug firmly 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 exa
21. utton System Properties Figure 12 System Properties Screen Step 5 Slect USB to Serial Port COM3 and click Propertes button System Properties Figure 13 System Properties Screen Step 6 Browse COMS properties USB to Serial Port COM3 Properties Figure 14 System Properties Screen 3 Remove GPS USB Driver If you want to update the USB driver you should remove existing driver and install new one Step 1 Remove GPS USB driver by double clicking the icon show in Figure 15 A dialog window shown in Figure 16 will be pop Up iDRemove198 l Merenna erered Figure 15 GPS USB Driver Remove Icon Step 2 IT 3 Serial Diver Kemireet Click OK button r i Figure 16 Remove Driver Screen Step 3 Click Yes A ee Ka a Figure 17 Driver Remove Warning Screen C Windows XP Interface 1 Install GPS USB Driver Before the installation of GPS USB driver there are three procedures required The first thing is to turn on PC in the Windows environment The second thing is to copy USB driver into HDD The third thing is to plug the GPS receiver into the USB port of PC and then follow the installation guide Step 1 Select Install from a list or specific location Advanced Found New Hardware Wizard Welcome to the Found Now Figure 18 Win XP Automatic Installation Driver Screen ni Step 2 Select Includ
22. y of 159dBm offers good navigation performance even in urban canyons having limited sky view Satellite based augmentation systems such as WAAS and EGNOS are supported to yield improved accuracy NMN Ne 2 Features 20 parallel channel GPS receiver 4000 simultaneous time frequency search bins SBAS WAAS EGNOS support 159dBm tracking sensitivity lt 8 second hot start lt 40 second cold start SECTION 2 RECEIVER OPERATION Upon power up after initial self test has completed the HI 2041II USB 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 automatic locate 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 As soon as GPS signal is acquired and tra
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