CompactGPS
Contents
1. Mobile Device T ER Business Personal Templates Mobile Device My Pocket PC Welcome To Windows M CompactGPs Doteboses My Documents Program Files Temp My Pocket PC History Program a s Ser lp Temporary malconfig cig Inbierrit Flies Start Hanu Ele Edt Wew Favones Tools Help CompactGPS Bas gt Aah Fods CH US TS X Bir Address Start Menu eGo Settings Start Menu Irternet Explorer Calendar Comecis E B Motes Tasks 2 Execute GPSDemo by double click the GPSDemo Icon as show below F3 calendar FE contacts KA GPSDemo inbox internet explorer 2 13p ok tober 04 2000 ner information E notes tasks 7 programs 8 settings bu CompactGPS u 3 Show initial Logo mt rel Me GPSDemo V7 0 EY CompactGPs If there is no GPS module on the CompactFlash slot it will show Message Can t Open Comport Then please try to choose other Comport For example If you use HP Jornada PDA you can try to choose Com 2 you must insert the GPS module and enter OPEN button to restart GPSDemo Can t Open Comport 4 If the GPS module can t receive any signal in about 5 seconds it will show Message Can t Find GPS Module Then you must insert the GPS module and enter OPEN button to restart Can t Find GPS Module 10 CompactGPS add2. 5 If everything is ok it will show the satellite diagram like below Push the ok button on title bar will terminate the program Enter the Position Button will change to Position diagram A GPSDemo Date 2000 10 04 Time 14 16 26 HDOP 10 VDOP 1 6 PDOP 1 9 3D 6 Position Diagram will show the position Enter ok button can return to the satellite diagram Push Cold St button can clear the GPS module data and initialize GPS data receiving Latitude 29 00 59 2 N Longitude il 1728274 E Date 2001 03 28 Time 10 05 57 Speed 0 0 KM Altitude 207 7 M Ej 11 Specifications Physical characteristics Dimension 48mm W 103 5mm L 33mm H Weight 65 grams Temperature characteristics Storage temperature 20 C 65 C Operating temperature 0 C 55 C General Sensitivity 135 dBm Channels 12 channels L1 1575 42 MHz Cl A code 1 023MHz chip rate Accuracy Position accuracy 10m 95 Velocity accuracy 0 1 meters second without SA Time accuracy 1 microsecond synchronized to GPS time Datum WGS 84 Position update period Every 1 second Dynamic conditions Altitude 18000 meters 60000 feet max Velocity 515 meters second max Acceleration 4 G max Jerk 20 meters second max Power It shall use the following power DC 3 3V 10 Full Max current 160mA Trickle Min current 35mA Typical current 80mA 12 CompactGPS
3. AM CompactGPS AM Accessory Specifications External GPS Antenna Physical characteristics Dimensions 45mm W 45mm L 15mm H Cable length 500cm Weight 110 10g typical Connector Reversed MMCX 180 Cable RG 174 Color Black Temperature characteristics Storage temperature 40 C 85 C Operating temperature 30 C 80 C General Center Frequency 1575 42 1 023 MHz LNA Gain 26dB min at 25 15 C Noise Figure 2 0dB max at 25 15 C Voltage 3 3 0 3V Current 12mA max 13 CompactGPS AM Software Data NMEA V2 2 Protocol It is the compact flash interface NMEA Output Messages The CompactGPS outputs the following messages as shown in Table 1 Table 1 NMEA Output Messages NMEA Record Description GGA Global positioning system fixed data GSA GNSS DOP and active satellites GSV GNSS satellites in view RMC Recommended minimum specific GNSS data GGA Global Positioning System Fixed Data Table 2 contains the values of the following example GPGGA 161229 487 3723 2475 N 12158 3416 W 1 07 1 0 9 0 M 0000 18 Table 2 GGA Data Format Name Example Units Description Message ID GPGGA GGA protocol header UTC Position 161229 487 hhmmss sss Latitude 3723 2475 ddmm mmmm N S Indicator N N north or S south Longitude 12158 3416 dddmm mmmm E W Indicator W E east or W west Position Fix I
4. CompactGPS AM Protocol to enable the Push To Fix function Message I D 151 Table 7 contains the input values for the following example Sets the receiver into low power Modes Example Set receiver to PTF off A0A20009 Start Sequence and Payload Length 97000000C8000000C8 Payload 0227B0B3 Message Checksum and End Sequence Table 7 Set Trickle Power Parameters I D 151 Binary Hex Name Bytes Scale Example Units Description Message ID 1 97 ASCII 151 Push To Fix Mode 2 0000 ON 1 OFF 0 Duty Cycle 2 10 00C8 Time on Milli Seconds On 4 000000C8 Ims Range 200 500 ms Time Payload Length 9bytes Push to Fix In this mode the receiver will turn on every 30 minutes to perform a system update consisting of a RTC calibration and satellite ephemeris data collection if required i e a new satellite has become visible as well as all software tasks to support SnapStart in the event of an NMI Ephemeris collection time in general this takes 18 to 30 seconds If ephemeris data is not required then the system will re calibrate and shut down In either case the amount of time the receiver remains off will be in proportion to how long it stayed on Off period On Period 1 Duty Cycle Duty Cycle Off Period is limited to 30 minutes The duty cycle will not be less than approximately On Period 1800 or about 1 Push to Fix keeps the ephemeris for all visible satellites up to date so po
5. Ground 309 62 degrees True Date 120598 ddmmyy Magnetic Variation degrees E east or W west Checksum 10 CR LF End of message termination 16 CompactGPS AM How to enable Push To Fix function 1 Switch the communication protocol from NMEA to SIRF binary 2 Enable PTF function 3 Switch back to NMEA protocol with the output rate as following GPGGA 1 s GPGSA l s GPGSV 5 s GPRMC l s Set SIRF protocol at NMEA protocol This command message is used to set the protocol SiRF Binary or NMEA and or the communication parameters baud rate data bits stop bits parity Generally this command is used to switch the module back to SiRF Binary protocol mode where a more extensive command message set is available When a valid message is received the parameters are stored in battery backed SRAM and then the Evaluation Unit restarts using the saved parameters Table 6 contains the input values for the following example Switch to SIRF Binary protocol at 9600 8 N 1 PSRF100 0 9600 8 1 0 0C Table 6 Set Serial Port Data Format Name Example Units Description Message ID PSRF100 PSRF100 protocol header Protocol 0 0 SiRF Binary ISNMEA Baud 9600 4800 9600 19200 38400 Data Bits 8 8 71 Stop Bits 1 0 1 Parity 0 O None 1 Odd 2 Even Checksum VE lt CR gt lt LF gt End of message termination SiRF protocol is only valid for 8data bits 1 stop bit and no parity 17
6. issues Now the CFA has developed the CF specification to expand the CF concept beyond flash data storage and include I O devices and magnetic disk data storage The CF specification also includes the original Type I 3 3mm thick card and newer Type II 5mm thick cards While CompactFlash and many I O devices can fit into the Type I card the Type II cards enable higher capacity CompactFlash cards magnetic disk cards and many additional I O cards What Is CompactGPS GM h SIM CompactGP the latest ingenious GPS technology from the leading GPS receiver manufacturer introduces a GPS module in CompactFlas interface CompactGP represents Inserting it and implementing a map or navigation software CompactGPS will convert the compatible devices for GPS functions such as locate one or multiple objects conduct personal amp vehicle navigation and or apply for geographical surveys CompactGPs What Have Inside the 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 Please refer to the contact information on the last page of this manual GPS Receiver User Manual CD External Antenna Option Warranty Card What Is GPS In 1974 the USA Department of Defense set about developing a Global Positioning System GPS a constellation of 24 satellites that Orbits 12 000 miles above the Earth Using triang
7. CompactGPS User Manual Contents CompactGPS at A Glance About CompactFlash What Is CompactGPS What Have Inside the Package What Is GPS Description of the interfaces How to Install amp Operate CompactGPS How to Install amp Operate CompactGPS How to Test Your CompactGPsTM Specifications Accessory Specifications Software Data How to enable Push To Fix function Troubleshooting CompactGPS AM 12 13 14 17 21 CompactGPS CompactGPS at A Glance External Antenna Connector Reset Button Internal GPS Antenna CompactGPS AM About CompactFlash The CompactFlash Association CFA was established in October 1995 with the premise that CompactFlash lightweight low power mobile products that would significantly increase the productivity and enhance CF technology would enable the introduction of a new class of advanced small the lifestyles of millions of people The concept behind CF technology was simple to capture retain and transport data audio and images on CompactFlash Storage Cards CF Storage Cards provided the capability to easily transfer all types of digital information and software between a large variety of digital systems The CFA approved and published the CompactFlash specification enabled users to develop CF products that function correctly and are compatible with future standard This vendor independent CF designs eliminating compatibility
8. NSS Satellites in View Table 4 contains the values of the following example CompactGPS E GPGSV 2 1 07 07 79 048 42 02 51 062 43 26 36 256 42 27 27 138 42 71 Table 4 GSV Data Format Name Example Units Description Message ID GPGSV GSV protocol header Number of Messages 2 Range to 3 Messages Number 1 Range to 3 Satellites in View 07 Satellite ID 07 Channel 1 Range 1 to 32 Elevation 79 degrees Channel 1 Maximum 90 Azimuth 048 degrees Channel 1 True Range 0 to 359 SNR C No 42 dBHz Range 0 to 99 null when not tracking Satellite ID 27 Channel 4 Range 1 to 32 Elevation 27 degrees Channel 4 Maximum 90 Azimuth 138 degrees Channel 4 True Range 0 to 359 SNR C No 42 dBHz Range 0 to 99 null when not tracking Checksum THE O CRU ULF End of message termination RMC Recommended Minimum Specific GNSS Data Table 5 contains the values of the following example GPRMC 161229 487 A 3723 2475 N 12158 3416 W 0 13 309 62 120598 10 Table 5_ RMC Data Format Name Example Units Description Message ID GPRMC RMC protocol header UTC Position 161229 487 hhmmss sss Status A A data valid or V data not valid Latitude 3723 2475 ddmm mmmm N S Indicator N N north or S south Longitude 12158 3416 dddmm mmmm E W Indicator W E east or W west Speed Over Ground 0 13 knots Course Over
9. That is the side with magnetic is the bottom side and the upper side must face to sky in order to receive better signal reception External Antenna Connector Reversed MMCX Connector Antenna upper side Magnet bottom side Reversed MMCX Connector CompactGPs How to Install amp Operate CompactGPS The CompactGPS supports plug and play 1 If your PDA or laptop have CompactFlash slot just plug your CompactGPS into the slot 2 If you don t have the CompactFlash slot but you got a PCMCIA slot then you can apply a adapter to connect your CompactGPS to PCMCIA slot Note 1 In order to see NMEA0183 navigational data use the Hyper Terminal program of Windows 95 98 Please setup the COM port connected with CompactGPS to Baud rate 4800 Data bit 8 Parity None Stop bit 1 Flow control None 2 Refer to NMEA 0183 data format CompactGPs How to Test Your CompactGPS Install Guide 1 Copy GPSDemo exe from PC to your Pocket PC 1 Install Microsoft ActiveSync to your PC Refer to your Pocket PC manual for installation procedure 2 Setup your Pocket PC cradle to Desktop PC UART port The Microsoft ActiveSync will detect your Pocket PC automatically 3 After finish the connection between PC and the Pocket PC Copy GPSDemo exe file to the target path Mobile Device My Pocket PC windows Start Menu ActiveSync will automatically transfer to Pocket PC
10. age every X seconds requested i e to request a message to be sent every 5 seconds request the message using a value of 0x05 Maximum rate is 1 255s A value of 0x00 implies the checksum is NOT calculated OR transmitted with the message not recommended A value of 0x01 will have a checksum calculated and transmitted as part of the message recommended After the CompactGPS enter the sleep mode user can get a fast navigation solution by pressing the Wake Up Button Reset button 19 20 CompactGPS AM CompactGPS a Troubleshooting Problem Reason Solution No position Weak or no GPS signal can be Connect an external antenna which locate at a output but received at the place outdoors open space to your CompactGPS and timer is CompactGPS is then press Reset Button counting At outdoor space but GPS signal is Go outdoors and press Reset Button to try again blocked by buildings or connect an external antenna to improve the poor GPS signal Execute Fail Wrong CPU Type Pocket PC support multiple types of CPU Make sure you download the correct software You can use setting function of start menu on your PDA to check the correct CPU type Can t Open The CompactFlash is not Insert CompactFlash or Close all other COM port inserted or some other application applications that using the COM port is using the COM port Can t Find Poor connection Check the CompactFlash is inserted cor
11. ndicator 1 See Table 2 1 Satellites Used 07 Range 0 to 12 HDOP 1 0 Horizontal Dilution of Precision MSL Altitude 9 0 meters Units M meters Geoid Separation meters Units M meters Age of Diff Corr second Null fields when DGPS is not used Diff Ref Station ID 0000 Checksum 18 O CRO O LF End of message termination 14 CompactGPS ar Table 2 1 Position Fix Indicator Value Description 0 Fix not available or invalid 1 GPS SPS Mode fix valid 2 Differential GPS SPS Mode fix valid 3 GPS PPS Mode fix valid GSA GNSS DOP and Active Satellites Table 3 contains the values of the following example GPGSA A 3 07 02 26 27 09 04 15 1 8 1 0 1 5 33 Table 3_ GSA Data Format Name Example Units Description Message ID GPGSA GSA protocol header Mode 1 A See Table 3 2 Mode 2 3 See Table 3 1 Satellite Used 07 Sv on Channel 1 Satellite Used 02 Sv on Channel 2 Satellite Used Sv on Channel 12 PDOP 1 8 Position Dilution of Precision HDOP 1 0 Horizontal Dilution of Precision VDOP 1 5 Vertical Dilution of Precision Checksum 33 CR LF End of message termination Table 3 1 Mode 1 Value Description 1 Fix not available 2 2D 3 3D Table 3 2 Mode 2 Value Description M Manual forced to operate in 2D or 3D mode A Automatic allowed to automatically switch 2D 3D 15 GSV G
12. rectly GPS Module No signal No action for few minutes may Close the application and execute it again to cause Pocket PC enters power saving mode It will close the COM port at the same time reopen the COM port Weak or no GPS signal when using CompactGPS indoors Connect an external antenna to your CompactGPS and place it at an outdoors open space then press Reset button 21
13. sition velocity fixes can generally be computed within SnapStart times when requested by the user on the order of 3 seconds Switch To NMEA Protocol at Sirf protocol Message I D 129 Table 8 contains the input values for the following example Request the following NMEA data at 9600 baud GGA ON at 1 sec GLL 1sec GSA ON at 1 sec GSV ON at 1 sec RMC 1 sec VTG 1 sec 18 CompactGPS AM Example A0A20018 Start Sequence and Payload Length 8102010100010501050100010001000100010001000112C0 Payload 0164B0B3 Message Checksum and End Seguence Table 8 Switch To NMEA Protocol Binary Hex Name Bytes Scale Example Units Description Message ID 1 81 ASCII 129 Mode 1 02 GGA Message 1 01 I s Checksum 1 01 GLL Message 1 00 1 s Checksum 1 01 BSA Message 1 05 1 s Checksum 1 01 GSV Message 1 05 1 s Checksum 1 01 RMC Message 1 00 1 s Checksum 1 01 VTG Message 1 00 1 s Checksum 1 01 Unused Field 1 00 Recommended value Unused Field 1 01 Recommended value Unused Field 1 00 Recommended value Unused Field 1 01 Recommended value Unused Field 1 00 Recommended value Unused Field 1 01 Recommended value Unused Field 1 00 Recommended value Unused Field 1 01 Recommended value Baud Rate 1 12C0 38400 19200 9600 4800 2400 Payload Length 24bytes A value of 0x00 implies NOT to send message otherwise data is sent at 1 mess
14. ulation of signals from four of the satellites a receiving unit on earth can pinpoint its current location to within a few meters A GPS device receives the GPS data from satellites and then converts the GPS data into longitude latitude and altitude LLA data velocity time and etc Position and navigation information is vital to a wide range of professional and recreational activities covering surveying search and rescue tracking hiking navigating and so forth Description of the interfaces LED Function LED off GPS receiver switch off LED on GPS receiver searching signal LED flashing GPS signal is fixed Reset Button When push the Reset button it will initialize and restart the CompactGPs system External Antenna Connector External GPS antenna This connector is designed for external GPS antenna Please refer the Accessory Specifications for detail descriptions and specification of external antenna When to use the External Antenna When you are in a car or any environments that GPS signal is blocked the external GPS antenna will help to receive better GPS signal Please place the external GPS antenna in an outdoor open space to ensure a better GPS performance CompactGPs How to use the External Antenna Plug the reversed MMCX connector of the external antenna to the jack on CompactGPS Place the external antenna on the roof of the car or an outdoor open space and make sure place it in correct direction
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