Navman LA000508 User's Manual
Contents
1. 3 9 Sensitivity The GPS receiver performance of the Jupiter 20 is shown in Table 3 3 Parameter J20 J20D J20S acquisition sensitivity 135dBm 33dBHz 135dBm 33dBHz navigation sensitivity 141dBm 28dBHz 152dBm 17dBHz tracking sensitivity 143dBm 26dBHz 154dBm 15dBHz Table 3 3 GPS receiver performance LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 8 3 10 Dynamic constraints The Jupiter 20 receiver is programmed to deliberately lose track if any of the following limits are exceeded Velocity 500m s max Acceleration 4G 39 2 m s max Vehicle jerk 5m s max Altitude 18000 m max referenced to MSL 3 11 Position and velocity accuracy The position and velocity accuracy of the Jupiter 20 are shown in Table 3 4 assuming full accuracy C A code Clear Acquisition These values are the same in normal operation and when TricklePower is active Parameter J20 J20D horizontal CEP 2 1m horizontal 2dRMS 5 5m vertical VEP 2 5m velocity 2D 2 sigma 0 15m s at a velocity greater than 5km h Table 3 4 Position and velocity accuracy 4 0 Electrical requirements 4 1 Power supply 4 1 1 Primary power The Jupiter 20 GPS receiver is designed to operate from a single supply voltage meeting the requirements shown in Table 4 1 Parameter input voltage 2 9 to 3 6VDC 2 92. Na NAVMAN Jupiter 20 GPS receiver module Data Sheet NAVMAN TU20 D411 001 MADE IN INDONESIA ANNA A 0 A wn zn ka e i Related documents e Jupiter 20 Integrator s manual LA000508 e Jupiter 20 Product brief LA000509 e Jupiter Series development kit guide LA000645 e SIRF Binary protocol reference manual Navman NMEA reference manual MN000315 e Jupiter 20 DR application note LA000433 Low Power Operating Modes application note LA000513 LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice Contents 1 0 Introduction wes incissacseeveieiieeriesieccvecesdensidessbaveseicend ede sdetesaccesdesasseacesecsduees Esana aaaea 4 2 0 Technical COSCrIPUiOn ies iciciscicvscucesiecespaceessedersedecptncenescesnecevssnuesatsecss deeescessicvestare 4 2 1 Product appliCationS cccccc scccccensieceesssineces seianeece ee eE EE EA diktere 4 Ke EE A 2 3 Major components of the Jupiter 20 5 2 4 Physical charachertstce seeeeeeeeeeeeeeeerrresettrtettttrrnttttr untatin tunat tu nuante tnunatnennn antennen een 5 2 5 Mechanical specification cccccccecececeeeeeeeeeeecaaeeeeeneeceaaeseqeeeeseeaeeeseneessceeeeeneeseeaes 5 2 6 External antenna surface Mount padS sssesesseesereeeerttte tet estttntttnttttrttsrnnstnnstrn nnne nnnt 5 2 7 UO and power CONNECTIONS cccecceeeeececeeeeee
3. RESET master reset active low GPIO10 GPS FIX general purpose IO or GPS fix indication active low GPIO6 SDO general purpose IO or SPI serial data out GPIOS SDI general purpose IO or SPI serial data in GPIO7 SCK general purpose IO or SPI serial clock GPIO15 ANT OC general purpose IO antenna open circuit sensor input active high GPIO1 ANT CTRL general purpose IO antenna DC power control output ON high GPIO9 1PPS general purpose IO or 1 pulse per second output GND ground See also Table 4 4 for J20D pad functions Table 4 5 J20 J20S receiver pad functions LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 12 5 0 Software interface The host serial I O port of the receiver s serial data interface supports full duplex communication between the receiver and the user The default serial modes are shown in Table 5 1 J20 J20S J20D GSW2 3 XTrac SiRFDRive 1 0 Port A NMEA 9600 NMEA 9600 NMEA 9600 Port B RTCM 9600 SiRF binary 38400 RTCM 9600 Table 5 1 Jupiter 20 default baud rates 5 1 NMEA output messages The output NMEA 0183 v2 2 messages and intervals for the receiver are listed in Table 5 2 A complete description of each NMEA message is contained in the Navman NMEA reference manual MN000315 NMEA message J20 J20S J
4. 1 Primary Dower esriiirruriisererrrurannsnnakinnaniraka NiNa ANA KNARANTA AENEAN ARARNAR KANAA RE 9 4 1 2 Low supply voltage detector rrrraravvvrnnnnnvvvrnnnnnnrvnrnnnnnrnnnrnnnrrrnnrnneerennnrrensrennnnnn 9 4 1 3 VCC_RF power supply ccceceeceeeeceeeeeeeecaeeeeceeeecaaeeeseeeesecaeeeseaeesecureeeseaeeneees 9 4 1 4 External antenna voltage n 4 ccccesecceeeeeeet cee eesueccateceestceeeeesetsnteeeesecaieeeeeneaeaeeeunees 10 4 1 5 RF Radio Frequency Input 10 41 6 Ant enna E CU BEE 10 4 1 7 Burnout protection warsrvrnrnrrvvvrnnnnnvrvvrnnnnrsvnnrnnerrrnnrnneersnnnrneensenrnnesssennrneensennnen 10 4 1 8 Jamming performante esien iai ia Ni EN ER eaat 10 4 1 9 Flash uporadabltv 10 47110 R eetmmput stuet maaange kadre ae 10 4 2 Data input output SPECIFICATIONS mrrrrrrrrrrrrrvrrrrnrrrravvrnnrrrrrrnrnrrrrrnnnrnnsrrrnnnnnssrsnnnnnsen 11 4 21 Voltage levels esson i E E AEREE NN AETA 11 4 2 2 I O surface mount pDade ravn nnnnnrn narr narr nenrrn narr renner nnetnnnnnnnnnn 11 LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 5 0 Software interface nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnennnnennnnnnnnnnennnnnnnnnennnnneen 13 5 1 NMEA output messages 13 5 2 SIRF binary tee arien aiaiga aaia ada e aaia 13 5 3 Software functions and Capabilttles ett ttse etr tnrtetrtnsrttrnnnnt ntn nnnern rannen 13 6 0 Dead Recko
5. 3 Interface voltage levels 4 2 2 I O surface mount pads Details of the surface mount pad functions are shown in Table 4 4 and 4 5 Description 8 GYRO_IN l gyro input analogue 0 5 V 27 FWD REV l fwd rev input low forward high reverse 28 WHEEL_TICKS l wheel tick input See also Table 4 5 for J20 J20S pad functions Table 4 4 J20D receiver pad functions LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 11 PWRIN Description main power input 3 3V GND ground BOOT serial boot high for serial boot low or open circuit for normal operation RXA CMOS level asynchronous input for UART A TXA CMOS level asynchronous output for UART A TXB CMOS level asynchronous output for UART B RXB CMOS level asynchronous input for UART B GPIO3 ADC CONV NANT SC general purpose IO output for external A D converter control antenna short circuit sensor input active low RF_ON output to indicate whether the RF section is enabled active high GND ground GND ground GND ground GND ground GND ground GND ground GND ground RF_IN GND antenna signal input ground V_ANT external power supply for active antenna VCC_RF RF Power 2 8V supply output V_BATT backup battery input
6. in the user s application the BOOT pad is connected to a test pad for use in future software upgrades 4 1 10 Reset input This active low input pad 22 allows the user to restart the software from an external signal It is also used to initiate a push to fix navigation cycle In normal operation this pad should be left floating or activated by an open drain driver Active pull up is not recommended LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 10 4 2 Data input output specifications All communications between the Jupiter 20 receiver and external devices are through the I O surface mount pads These provide the contacts for power ground serial I O and control Power requirements are discussed in Section 4 1 4 2 1 Voltage levels The I O connector voltage levels measured at PWR_IN 3V are shown in Table 4 3 Parameter TXD amp RXD GPIOs SPI bus Vin min 2 0V Vin max PWR_IN 0 1V Vi min 0 1V Vi max 0 8V Von min at Lou 2 MA Von max 2 0V PWR_IN Vor min 0 Vor max at Ip 2mA 1 0V Reset input max capacitance Cmax 100 pF input current max 600 pA pulse time min 200 us Reset input should not be driven high by external circuits It is recommended that this input is driven low by an open drain interface Table 4
7. make changes to specifications and product descriptions at any time without notice Navman makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to its specifications and product descriptions No license express or implied by estoppel or otherwise to any intellectual property rights is granted by this document Except as provided in Navman s Terms and Conditions of Sale for such products Navman assumes no liability whatsoever THESE MATERIALS ARE PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND EITHER EXPRESSED OR IMPLIED RELATING TO SALE AND OR USE OF NAVMAN PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE CONSEQUENTIAL OR INCIDENTAL DAMAGES MERCHANTABILITY OR INFRINGEMENT OF ANY PATENT COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT NAVMAN FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION TEXT GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS NAVMAN SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDING WITHOUT LIMITATION LOST REVENUES OR LOST PROFITS WHICH MAY RESULT FROM THE USE OF THESE MATERIALS Navman products are not intended for use in medical lifesaving or life sustaining applications Navman customers using or selling Navman products for use in such applications do so at their own risk and agree to fully indemnify Navma
8. two dimensional modes of navigation 3D navigation The receiver defaults to 3D navigation when at least four GPS satellites are being tracked In 3D navigation the receiver computes latitude longitude altitude and time from satellite measurements 2D navigation When less than four GPS satellite signals are available or when a fixed altitude value can be used to produce an acceptable navigation solution the receiver will enter 2D navigation mode using a fixed value of altitude determined by the host Forced operation in 2D mode can be commanded by the host In 2D navigation the navigational accuracy is primarily determined by the relationship of the fixed altitude value to the true altitude of the antenna If the fixed value is correct the specified horizontal accuracies apply Otherwise the horizontal accuracies will degrade as a function of the error in the fixed altitude 3 8 Core processor performance The standard Jupiter 20 with GSW2 software runs at a CPU clock speed of 12 28 MHz Using XTrac software Jupiter 20S the clock speed increases to 24 5 MHz An SDK Software Development Kit is available from SiRF to customise the Jupiter 20 firmware Using the SiRF SDK the clock speed can be increased up to 49 MHz The processing power used by the navigation software is shown in Table 3 2 Parameter J20 J20D typical performance 2 3 MIPS peak performance 6 7 MIPS Table 3 2 Software processing performance
9. 20D 1s 1s 1s 1s 1s 1s 1s 1s ZDA 1s PTTK DR N A N A 1s N A not available Table 5 2 Default NMEA messages 5 2 SiRF binary A complete description of each binary message is contained in the SiRF Binary Protocol reference manual 5 3 Software functions and capabilities The Jupiter 20 has additional capabilities to the standard SIRF GPS software e GPS fix output GPIO10 Low for 2D or 3D fix e GPIO command control via serial commands for use by customer e Gyro wheel tick and forward reverse inputs DR only Antenna power monitor messages and power control O P non DR only e PTTK DR DR status messages in NMEA protocol format Refer to the Jupiter 20 Integrator s manual LA000508 for further information LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 13 Table 5 3 shows the software features available with the Jupiter 20 configurations Feature Description J20D SiRFDrive Improves position accuracy by using freely available SBAS capability satellite based correction services called SBAS Satellite Based Augmentation System DGPS ready Accepts DGPS corrections in the RTCM SC 104 format Improves battery life using this enhanced power management TricklePower mode Adaptive Intelligently switches between TricklePower and full power TricklePower depending on th
10. and in vehicle automotive products 2 2 Receiver architecture The functional architecture of the Jupiter 20 receiver is shown in Figure 2 1 Module architecture DR Modules only GYRO IN i PWRIN gt forward wheel active or passive antenna reverse ticks ADC controls UART TCXO bias T baseband processor gt gt 1 FRE REN filter VANT f 1 f input 2 8V RTC crystal 1 8V regulator regulator AD 0 18 D 0 15 CTRL j i PWRIN gt Flash memory ORing brown out PWRIN gt circuit detector VBATT gt Figure 2 1 Jupiter 20 module architecture LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 4 2 3 Major components of the Jupiter 20 LNA Low Noise Amplifier This amplifies the GPS signal and provides enough gain for the receiver to use a passive antenna A very low noise design is utilised to provide maximum sensitivity Bandpass filter 1 575 GHz This filters the GPS signal and removes unwanted signals caused by external influences that would corrupt the operation of the receiver RFIC Radio Frequency Integrated Circuit The RFIC SiRFstarlII GRF 2i LP and related components convert the GPS signal into an intermediate frequency and then digitise it for use by the baseband processor TCXO Temperature Compensated Crystal Oscillator This highly stable 24 5535 MHz oscillator controls the down conversion process fo
11. art 3 1 2 Warm start A warm start typically results from user supplied position and time initialisation data or continuous RTC operation with an accurate last known position available in memory In this state position and time data are present and valid but ephemeris data validity has expired 3 1 3 Cold start A cold start acquisition results when either position or time data is unknown Almanac information is used to identify previously healthy satellites LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 6 3 2 Acquisition times Table 3 1 shows the corresponding TTFF times for each of the acquisition modes TTFF hot valid almanac position time amp ephemeris TTFF warm valid almanac position amp time TTFF cold valid almanac re acquisition lt 10s obstruction with valid almanac position time amp ephemeris Table 3 1 TTFF acquisition times 3 3 Timing 1PPS output The 1PPS Pulse Per Second output of the Jupiter 20 receiver is lt 1 us typical 300ns in reference to UTC Coordinated Universal Time This feature is currently only available on the Jupiter 20 standard module 3 4 Battery backup SRAM RTC backup During powered down conditions the SRAM and RTC may be kept operating by supplying power from the VBATT as shown in Table 4 1 The Jupiter 20 can accept slow VBATT supply ri
12. bstances in electrical and electronic equipment RoHS e CISPR22 and FCC Part 15 Class B for radiated emissions e Automotive standard TS 16949 e Manufactured in an ISO 9000 2000 accredited facility 2 10 Marking Serialisation The Jupiter 20 supports a code 128 barcode indicating the unit serial number The Navman 13 character serial number convention is characters 1 and 2 year of manufacture e g O6 2006 07 2007 characters 3 and 4 week of manufacture 1 to 52 starting first week in January character 5 manufacturer code characters 6 and 7 product and type character 8 product revision characters 9 13 sequential serial number 3 0 Performance characteristics 3 1 TTFF Time To First Fix TTFF is the actual time required by a GPS receiver to achieve a position solution This specification will vary with the operating state of the receiver the length of time since the last position fix the location of the last fix and the specific receiver design 3 1 1 Hot start A hot start results from a software reset after a period of continuous navigation or a return from a short idle period i e a few minutes that was preceded by a period of continuous navigation In this state all of the critical data position velocity time and satellite ephemeris is valid to the specified accuracy and available in SRAM Static Random Access Memory Battery backup of the SRAM and RTC during loss of power is required to achieve a hot st
13. e current GPS signal level when TricklePower is enabled Advanced power Improves battery life using a software based power management management Push to Fix Provides an on demand position fix mode designed to further improve battery life Almanac to Improves cold start times by storing the most recent almanac to Flash flash memory Low signal Acquires satellites and continues tracking in extremely low acquisition signal environments Low signal Continues navigating in extremely low signal environments navigation 1 PPS A timing signal generated every second on the second yes always enabled A available E enabled by default in production units Table 5 3 Jupiter 20 software capability 6 0 Dead Reckoning input specifications 6 1 Gyro input specification The specifications shown in Table 6 1 apply to the Jupiter 20D only Characteristics Value Umit input max voltage range max 5 min 0 input resistance nominal 18 2 kQ nominal bias at zero angular velocity 2 5 VDC nominal scale factor 22 2 mV per degrees s linearity 0 5 max angular resolution 0 055 degrees s max gyro angular rate 80 degrees s Note that clockwise rotation should cause the input to rise Table 6 1 Gyro input specifications At the time of publication recommended manufacturers of gyros are as follows Murata ENV series Panasonic EWTS series Navman takes no responsibility for the
14. eeeceaeeeseceeceaeeeseseesecaeeessaeseceeeesenaeeneaes 5 2 8 e leie UC 6 ele 6 2 10 Marking Serialis tion uaujsnamunssiunaminntmnnindnisiaiinvmdnjbniitt 6 3 0 Performance Characteristics rnvrnnnnnnnvnnnnnnnvvnnnnnnvvvnnnnnnnvnnnnnnnnnnnnnnnvnnnnnnnnnnennn 6 3 1 TTFF Tim TO First FIX 2 25ein eine aan auraen 6 SIT ele 6 31 2 Warm Eu 6 31 3 Cold stamt Lassie dann nude innt 6 3 2 ACQUISITION time Saena aa a A aa eaaa 7 3 3 Timing 1PPS output niriana ia E E 7 3 4 Battery backup SRAM RTC backup rrrrrnnrnnrrnrrrrnrnrnrnrenrrnnrrrnnnnnrrnnrrrnnnnnrrn rennene 7 3 5 TricklePower mode 7 3 5 1 Adaptive TricklePower mode uarsrrrnnnnannrrvnnnennnrrnnnrensrrrnnnennnrrenneensrrrenseennrrennsenennn 7 3 5 2 Push To Fix mode nrnna AKARNAK EAE KAAKAA AEAEE 7 3 6 Differential aidiNg E 8 3 6 1 Differential GPS DGPo 8 3 6 2 Satellite Based Augmentation Systems SBAS including WAAS and EGNOS 8 SPAN te nu 8 3 8 Core processor performance cccscceceeeeeeececeeeeeeceaaeceeeeeesaaaeseeneeesaaeseeneeessueeeeaaees 8 3 9 Sensitivity lt j cccecadascabedeasapsacesateedsuczeasa e aaa EA aai E aR a aa 8 3 10 Dynamic constraints seasrentasnn aaa iadi 9 3 11 Position and velocity aCCUraCy s sssisisinranininin annii dinka Nki SANNE NENN Nina AN iA NENA RR NANE NENANA AA 9 4 0 Electrical requirement cccccccccceccceeeeeeeeeeeeeeeeeeeeeeeeeeeneeeeeeeeeeseeeeneeeneeeneeegs 9 41 POWer SUpply uinsanmsdnkiande bann EENS AATA tae 9 4 1
15. eled modules are shipped with 250 units per 300 x44 mm DxW reel with a pitch of 32mm Each reel is dry packaged and vacuum sealed in an MMB Moisture Barrier Bag with two silica gel packs and placed in a carton The MOQ Minimum Order Quantity for shipping is 250 units All packaging is ESD protective lined Please follow the MSD and ESD handling instructions on the labels of the MMB and exterior carton refer to sections 9 2 and 9 3 9 2 Moisture sensitivity The Jupiter 20 GPS receiver is an MSD Moisture Sensitive Device Precautionary measures are required in handling storing and using such devices to avoid damage from moisture absorption If localised heating is required to rework or repair the device precautionary methods are required to avoid exposure to solder reflow temperatures that can result in performance degradation Further information can be obtained from the IPC JEDEC standard J STD 033 Handling Packing Shipping and Use of Moisture Reflow Sensitive Surface Mount Devices 9 3 ESD sensitivity The Jupiter 20 GPS receiver contains class 1 devices and is ESDS ElectroStatic Discharge Sensitive Navman recommends the two basic principles of protecting ESDS devices from damage e Only handle sensitive components in an ESD Protected Area EPA under protected and controlled conditions e Protect sensitive devices outside the EPA using ESD protective packaging All personnel handling ESDS devices have the respon
16. ep mode until woken by activation of the reset input and compute a fresh position If the ephemeris data becomes invalid the RTC has the ability to self activate and refresh the data thus keeping the restart TTFF very short This mode yields the lowest power consumption of the module and is ideal where a battery powered application requires very few position fixes For further information on the TricklePower and Push To Fix modes refer to the Low Power Operating Modes application note LA000513 LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 7 3 6 Differential aiding 3 6 1 Differential GPS DGPS DGPS specification improves the Jupiter 20 horizontal position accuracy to lt 4m 2 dRMS 3 6 2 Satellite Based Augmentation Systems SBAS including WAAS and EGNOS SBAS improves horizontal position accuracy by correcting GPS signal errors caused by ionospheric disturbances timing and satellite orbit errors The Jupiter 20 is capable of receiving WAAS and EGNOS differential corrections Both SBAS and DGPS should improve position accuracy However other factors can affect accuracy such as GDOP Geometric Dilution of Precision multipath distance from DGPS reference station and latency of corrections Note also that XTrac does not support differential aiding 3 7 Navigation modes The Jupiter 20 GPS receiver supports 3D three dimensional and 2D
17. erformance 8 Table 3 4 Position and velocity aCcCuracH 9 Table 4 1 Operating power for the Jupiter 20 9 Table 4 2 Typical jamming performance aarrnnonvnnnnnr rann nnnnrnrnnnrnnnnnrrnnarnnnnnerrnnnrnnnnnnnrnnn 10 Table 4 3 Interface voltage levels rrnrrnnnnrrnnrnnrnnnnrnarrnnnnnrnn rant nnnnnnnnnnnnnnnernnnnntnnnnnnnnnn 11 Table 4 4 J20D receiver pad functions rrrrrrrnrrnrrnr rann nnnnrrn narr nnnnnnnnannnnnnnrrnnnrrnnnnnnrnnn 11 Table 4 5 J20 J20S receiver pad functions rrrrrrnrrnarrrrnrrrnavrrrnrrnnnvrrnrrrnarnrenrrnnnrnenerrnnnn 12 Table 5 1 Jupiter 20 default baud rates umsrnnrnvrerrrrrrrrnnrnnrrnrrrrnnnnrnnnarnrnnnerrnnnrrnnnnnnnnnn 13 Table 5 2 Default NMEA messages 13 Table 5 3 Jupiter 20 software Capability ccccceeeeeeeseeeeeceeeeeeeeeseceeeeseaeeseceeeseeeeeees 14 Table 6 1 Gyro input specifications narr rnnnnn narr nnnrnn raner nnnrnnnarnnnnnnnnnnn 14 Table 10 1 Jupiter 20 ordering information sssssseesseeesseesseettettnntstrtttrrtstnssrnnsrnneennet 17 LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 1 0 Introduction The Jupiter 20 GPS receiver module is a very small surface mount receiver that is intended as a component for OEM Original Equipment Manufacturer products The module provides a 12 channel receiver that continuously tracks all satellites in view and prov
18. haracteristics The Jupiter 20 receiver is packaged on a miniature printed circuit board with a metallic RF enclosure on one side The standard or DR configuration must be selected at the time of ordering and is not available for field retrofitting A lead free RoHS compliant product has been available since the end of 2005 2 5 Mechanical specification The physical dimensions of the Jupiter 20 are as follows length 25 4mm 0 1mm width 25 4mm 0 1mm thickness 3 0 mm max weight 4 0g max Refer to Figure 8 1 for the Jupiter 20 mechanical drawing 2 6 External antenna surface mount pads The RF surface mount pad for the external antenna has a characteristic impedance of 50 ohms 2 7 I O and power connections The I O Input Output and power connections use surface mount pads with edge plating around the edge of the module LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 5 2 8 Environmental The environmental operating conditions of the Jupiter 20 are as follows temperature 40 C to 85 C humidity up to 95 non condensing or a wet bulb temperature of 35 C altitude 304m to 18000 m vibration random vibration IEC 68 2 64 max vehicle dynamics 500 m s shock non operating 18 G peak 5 ms 2 9 Compliances The Jupiter 20 complies with the following e Directive 2002 95 EC on the restriction of the use of certain hazardous su
19. ides accurate positioning data 2 0 Technical description The highly integrated digital receiver incorporates and enhances the established technology of the SiRFstarlle LP chipset It is designed to meet the needs of the most demanding applications such as vehicle tracking in dense urban environments The interface configuration allows incorporation into many existing devices and legacy designs The Jupiter 20 receiver decodes and processes signals from all visible GPS satellites These satellites in various orbits around the Earth broadcast RF radio frequency ranging codes timing information and navigation data messages The receiver uses all available signals to produce a highly accurate navigation solution The 12 channel architecture provides rapid TTFF Time To First Fix under all start up conditions Acquisition is guaranteed under all initialisation conditions as long as visible satellites are not obscured The Jupiter 20 is available in three configurations e Jupiter 20 standard GSW2 3 navigation software e Jupiter 20S high sensitivity with XTrac navigation software e Jupiter 20D Dead Reckoning with SiIRFDRive software and gyro interface Protocols supported are selected NMEA National Marine Electronics Association data messages and SiRF binary 2 1 Product applications The module is designed for high performance and maximum flexibility in a wide range of OEM configurations including hand helds sensors
20. llite positions and velocities The almanac is used by a GPS receiver to determine satellite visibility and as an aid during acquisition of GPS satellite signals The almanac is a subset of satellite ephemeris data and is updated weekly by GPS Control C A code Coarse Acquisition code A spread spectrum direct sequence code that is used primarily by commercial GPS receivers to determine the range to the transmitting GPS satellite DGPS Differential GPS A technique to improve GPS accuracy that uses pseudo range errors recorded at a known location to improve the measurements made by other GPS receivers within the same general geographic area GDOP Geometric Dilution of Precision A factor used to describe the effect of the satellite geometry on the position and time accuracy of the GPS receiver solution The lower the value of the GDOP parameter the less the error in the position solution Related indicators include PDOP HDOP TDOP and VDOP EGNOS European Geostationary Navigation Overlay Service The system of geostationary satellites and ground stations developed in Europe to improve the position and time calculation performed by the GPS receiver Ephemeris A set of satellite orbital parameters that is used by a GPS receiver to calculate precise GPS satellite positions and velocities The ephemeris is used to determine the navigation solution and is updated frequently to maintain the accuracy of GPS receivers GPS Global Positioning Sy
21. n for any damages resulting from such improper use or sale Product names or services listed in this publication are for identification purposes only and may be trademarks of third parties Third party brands and names are the property of their respective owners Additional information posted at www navman com is incorporated by reference Reader response Navman strives to produce quality documentation and welcomes your feedback Please send comments and suggestions to tech pubs navman com For technical questions contact your local Navman sales office or field applications engineer LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 18
22. nent damage 4 1 5 RF Radio Frequency input RF input is 1575 42 MHz L1 Band at a level between 135 dBm and 152 dBm into a 50 ohm impedance This input may have a DC voltage impressed upon it to supply power to an active antenna The maximum input return loss is 9 dB 4 1 6 Antenna gain The receiver will operate with a passive antenna of unity gain However GPS performance will be optimum when an active antenna is used The gain of this antenna should be in the range of 20 dB to 30 dB 4 1 7 Burnout protection The receiver accepts without risk of damage a signal of 10 dBm from 0 to 2 GHz carrier frequency except in band 1560 to 1590 MHz where the maximum level will be 10 dBm 4 1 8 Jamming performance The typical jamming performance of the receiver based upon a 3 dB degradation in CN Carrier to Noise power ratio performance is shown in Table 4 2 This is with reference to the external antenna Jamming signal power dBm Frequency MHz 1400 1425 42 1530 1555 1575 42 1625 42 1725 42 Table 4 2 Typical jamming performance 4 1 9 Flash upgradability The firmware programmed in the Flash memory may be upgraded via the serial port The user can control this by pulling the Serial BOOT pad 3 high at startup then downloading the code from a PC with suitable software e g SiRFFlash In normal operation this pad should be left floating for minimal current drain It is recommended that
23. ning input specificatiOnS rrrrrrrrnnnnnnnvnnnnnnnnnnnnnnnvnnnnnnnnennnnnnnnnr 14 6 1 Gyro input specification srrrarnrrnnrnrrnnnnr narr rnnnn narr nnnnrn rart nnnrnnnarnnnnnerrnnnetnnnnnnnnnn 14 6 2 Wheeltickrat um ungmumm 4memiminiierrmimmirrmniverviveepvivneodbekeseranannedndagantndnsenendntedaee 14 6 3 FWd ReV Input SENSE orisni inini AENEAN ANEA KNEA ENAERE AKNET KNAAR AARAA NNER 14 7 0 Jupiter 20 development kt seen 15 8 0 Jupiter 20 mechanical drawing rrrrsanavvvvvnnnnnnnnnnnnnnvnnnnnnnnnnnnnnnvnnnnnnnnnnnnnnnnnne 15 90 GT Tel mv 16 9 1 Packaging and delivery ruurrnnnrrnnrronnrrrnnrennnrrennrennrrrenrrennrrennrennnrrensrennrrressennnrneetsennnnne 16 Cen Vu EE 16 9 3 ESD Sensitivity uansett 16 OA EE 16 9 5 RoHS compliance 0 cececccceceeceeeeeececeeeeeeeeeceaeeeseaeeseceeeeeeaaeseceeeeseeaeeseeeeeeseeesseaeeseaes 16 9 6 DISPOSA Lunde en DEEN ENNEN eed 16 10 0 Ordering nformahon as uasasessesmessmev mm nude 17 11 0 Glossary and E miksen 17 Figures Figure 2 1 Jupiter 20 module architecture rrrrarvsvvrrnnnnannvrnnnnnrnnrrrnnnrnnnrnrnnrennrnresrrrnnnnen 4 Figure 8 1 Jupiter 20 mechanical layout seeeeesseeesernessesrnnnnssnnnaatennnannnennunteennnaanannaaaeennna 15 Tables Table 3 1 T TFF acquisition times ccccccsccceceeescceeeeeeeecceeeseecceeesenaeseeeeseaaenenesenaadeeeeenees 7 Table 3 2 Software processing performance annen nnnnnnnnnnrnnnn 8 Table 3 3 GPS receiver p
24. r the RFIC block Stability in this frequency is required to achieve a fast TTFF Baseband processor The SiRFstarII GSP 2e LP processor is the main engine of the GPS receiver It runs all GPS signal measurement code navigation code and other ancillary routines such as power saving modes The normal I O of this processor is via the two serial ports Flash memory The Flash memory stores software and also some long term data RTC Real Time Clock crystal The 32kHz crystal operates in conjunction with the RTC inside the baseband processor It provides an accurate clock function when main power has been removed if the battery backup is connected Reset generator There are two voltage threshold reset generators in the Jupiter 20 The first provides a reset to the baseband block if the main power drops below a low limit threshold The second shuts off the supply to the RTC in case the backup battery drops below a lower threshold This is used to compensate for a slow SiRF rise time backup voltage Regulators The regulators provide a clean and stable voltage supply to the components in the receiver DR Dead Reckoning components The Jupiter 20D has additional components allowing direct connection to a turn rate gyro The gyro input takes the form of a high resolution ADC Analogue to Digital Converter where the analogue signal is digitised and prepared for use by the SiRFDRive DR software running in the baseband processor 2 4 Physical c
25. se time unlike many other SiRFstarII based receivers due to an on board voltage detector 3 5 TricklePower mode During normal mode of operation the Jupiter 20 is continuously running providing a navigation solution at the maximum rate of once per second This continuous mode provides no power saving The TricklePower mode of operation can be enabled to reduce the average power consumption The main power is supplied to the module continuously An internal timer wakes the processor from sleep mode The module computes a navigation position fix after which the processor reverts to sleep mode The duty cycle is controlled by a user configurable parameter If ephemeris data becomes outdated the TricklePower mode will attempt to refresh the data set within every 30 minute period or for every new satellite that comes into view With TricklePower set to a 20 duty cycle a power saving of 50 can easily be achieved with minimal degradation in navigation performance 3 5 1 Adaptive TricklePower mode In Adaptive TricklePower mode the processor automatically returns to full power when signal levels are below the level at which they can be tracked in TricklePower mode This is the default behaviour when TricklePower is active 3 5 2 Push To Fix mode Unlike TricklePower the operation in this mode is not cyclic This mode always forces the GPS software to revert to a continuous sleep mode after a navigation position fix It will stay in sle
26. sibility to be aware of the ESD threat to reliability of electronic products Further information can be obtained from the IEC Technical Report IEC61340 5 1 amp 2 Protection of electronic devices from electrostatic phenomena 9 4 Safety Improper handling and use of the Jupiter GPS receiver can cause permanent damage to the receiver and may even result in personal injury 9 5 RoHS compliance This product complies with Directive 2002 95 EC on the restriction of the use of certain hazardous substances in electrical and electronic equipment 9 6 Disposal We recommend that this product should not be treated as household waste For more detailed information about recycling of this product please contact your local waste management authority or the reseller from who you purchased the product LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 16 10 0 Ordering information The part numbers of the Jupiter 20 variants are shown in Table 10 1 TU20 D101 001 Jupiter 20 std adapter TU10 D007 400 Jupiter 20 std development kit TU10 D007 401 Jupiter 20S development kit TU10 D007 402 Jupiter 20D development kit Table 10 1 Jupiter 20 ordering information 11 0 Glossary and acronyms 2dRMS twice distance Root Mean Square ADC Analogue to Digital Converter Almanac A set of orbital parameters that allows calculation of approximate GPS sate
27. stem A space based radio positioning system that provides accurate position velocity and time data OEM Original Equipment Manufacturer Re acquisition The time taken for a position to be obtained after all satellites have been made invisible to the receiver SBAS Satellite Based Augmentation System Any system using a network of geostationary satellites and ground stations to improve the performance of a Global Navigation Satellite System GNSS e g EGNOS and WAAS SRAM Static Random Access Memory WAAS Wide Area Augmentation System System of satellites and ground stations developed by the FAA Federal Aviation Administration providing GPS signal corrections Currently available for North America only LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 17 SiRF and SiRF logo are registered trademarks of SiRF Technology Inc SiRFstar Push to Fix and TricklePower are trademarks of SIRF Technology Inc All other trademarks mentioned in this document are property of their respective owners 2006 Navman New Zealand All Rights Reserved Information in this document is provided in connection with Navman New Zealand Navman products These materials are provided by Navman as a service to its customers and may be used for informational purposes only Navman assumes no responsibility for errors or omissions in these materials Navman may
28. to 3 6VDC 2 9 to 3 6 VDC current typ at full power 3 3 V 75mA 85mA 80mA current max 100mA 100 mA 100 mA current typ at 20 TricklePower 60mA battery backup voltage 2 4V to 3 6V battery backup current lt 10 pA typ at 25 C maximum rise time unlimited ripple not to exceed 50 mV peak to peak Table 4 1 Operating power for the Jupiter 20 4 1 2 Low supply voltage detector The module will enter a reset mode if the main supply drops below 2 8V 4 1 3 VCC_RF power supply The VCC RF pad 20 provides a regulated 2 8V power source The specifications for this supply are as follows voltage 2 8V 2 current max 25 mA for J20 J20S 5mA for J20D LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 9 4 1 4 External antenna voltage DC power is supplied to the external antenna through the antenna power input pad VANT The receiver does not use this supply The DC supply to the RF connection does not current limit in the event of a short circuit Reference designs for antenna current limit are available in the Jupiter 20 Integrator s manual LA000508 The external antenna characteristics are as follows voltage typ 3 3V voltage max 12V current max 100 mA Warning if the antenna or its cable develops a short circuit and the external antenna current is not limited the GPS receiver will experience perma
29. use of these gyros in an application 6 2 Wheel tick rate The wheel tick rate is 4kHz maximum 1Hz minimum 6 3 Fwd Rev input sense The fwd rev input sense is LOW forward HIGH reverse External pull down is required if this input is not used LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 14 7 0 Jupiter 20 development kit The Jupiter 20 Development kit series assists in the integration of the Jupiter 20 module in custom applications The Development kit contains all of the necessary hardware and software to carry out a thorough evaluation of the Jupiter 20 module Refer to the Jupiter Series Development kit guide LA000645 for further details The following development kits are available for Jupiter 20 products e TU10 D057 400 Jupiter 20 Development kit ROHS e TU10 D057 401 Jupiter 20 S Development kit ROHS e TU10 D057 402 Jupiter 20 DR Development kit ROHS 8 0 Jupiter 20 mechanical drawing a 25 4401 7 25 4 0 1 top view a max side view detail A 234 scale 6 1 bottom view all dimensions are in mm Figure 8 1 Jupiter 20 mechanical layout LA000507G 2006 Navman New Zealand All rights reserved Proprietary information and specifications subject to change without notice 15 9 0 Product handling 9 1 Packaging and delivery Jupiter 20 modules are shipped in Tape and Reel form The re
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