user`s manual gps receiver albatros evaluation kit
Contents
1. fa 4000 esseses IJIZEZEXYN mwixyw SEMA P N S 010307 A 893 S N GPS RECEIVER ALBATROS EVALUATION KIT USER S MANUAL a SENA ISSUE 1 GPS REVISION 0 TABLE OF CONTENTS 1 INIRODUCTION 1 1 2 OVERVIEW ei eat k k in w a ea e a 2 1 2 1 PACKAGE CONTENTS stint sntancnscniinraaedaaetaatenemaumnnensentann 2 1 2 2 RELATED DOCUMENTATION eem 2 1 2 3 PRODUCT PRESENTATION ict baj as it at pa kak tk a des 2 2 2 4 ELECTRICAL CHARACTERISTICS aie ate ete bass tiu arida 2 3 2 4 1 Absolute maximum ratings seen 2 3 24 2 DC 0105 a ka uq an n ka a DX OX REPRE 2 3 2 5 FUNCTIONS wi aveti loa toutt kaa n ol to kaj aa ata kt 2 4 INSIALLATION kari k ala n kk a a a kk a km lt 3 1 3 1 ENVIRONMENT CONSIDERATIONS 3 1 3 2 CONNECTING THE EVALUATION 3 1 3 3 INSTALLING THE 3 1 4 INTERFACES DESCRIPTION 4 1 41 POWER CONNECTOR citis bivunted ux gx Ud Ex bia Rau ta i 4 1 2 2 PORT ab atou diia 2da D a RA i 4 1 42 1 Serial a e kk jn at a a a 4 1 4 2 2 Seral ke kn 4 1 4 32. 5 2 2 2 The Tracking View Screen The Tracking View screen graphically displays the location of each of the tracked used and available satellites in the form of a polar plot MU AEK 037 SN USER S MANUAL PAGE 5 7 JUNE 2000 SENA ISSUE 1 GPS REVISION 0 To display the Tracking view screen 1 Click on the Tracking View button or choose Tracking from the View menu 2 Tracking view 1515 In addition to the satellite locations the current tracking status is represented by color see Table 5 d Satellite color coding on page 5 7 Current speed and heading in a dynamic environment such as a moving vehicle is represented by an arrow The direction of the arrow represents heading while the length of the arrow indicates Speed over ground Configuring the Tracking View Screen You can configure the orientation and the velocity representation of the Tracking view screen To configure the Tracking view screen 1 Double click the Tracking View screen to display the Tracking View Configuration screen MU AEK 037 SN USER S MANUAL PAGE 5 8 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 Tracking Yiew Configuration P m Satellite Information Green Satellite with lock used in calculation EI Blue Satellite with lock not used Red Satellite without lock not used rientation r Outer circle represents the horizon Elevation 0 Center point is directly ove
3. ALMANAC ALM ci diversos progs sirfdemo E c Cancelar E SIRF Red E gt DIVERSOS E gt PROGS SIRFDEMO Mostrar archivos de tipo Unidades Almanac Files alm 2 Specify the file you want to use 3 Click the OK button to accept or the Cancel button to exit 5 2 3 13 Uploading an Ephemeris to the GPS Receiver An ephemeris is used by a GPS receiver to calculate the position of the satellites and hence the position of the GPS receiver If an ephemeris file is not available then this must be downloaded from a GPS satellite To eliminate the time required to download this information from the GPS constellation a current ephemeris file can be uploaded to the GPS Receiver using the SiRFdemo software To upload an ephemeris file to the GPS Receiver 1 Choose Set Ephemeris from the Action menu The Specify Ephemeris Data Filename To Load screen is displayed MU AEK 037 SN USER S MANUAL PAGE 5 24 JUNE 2000 SENA ISSUE 1 GPS REVISION 0 Nombre de archivo Carpetas Aceptar HEMRIS EP c diversos progs sirfdemo Cancelar E gt SIRF Red E gt DIVERSOS E gt PROGS SIRFDEMO Mostrar archivos de tipo Unidades Ephemeris Files eph e 2 Specify the file you want to use 3 Click the OK button to accept or the Cancel button to exit 5 2 3 14 Switching Operating Mode It is possible to place the GPS Receiver into a test
4. INP2 activated Multi ICE may not operate correctly JTAGEN activated Multi ICE will operate correctly if the software is not protected Therefore INP2 is not available anymore open Disconnect backup accumulator capacitor denotes factory settings PCB type jumper to avoid unintended changes of configuration m wo N co E MU AEK 037 SN USER S MANUAL PAGE 6 1 JUNE 2000 SENA ISSUE 1 GPS REVISION 0 6 2 TROUBLESHOOTING Table 6 b Troubleshooting tips Problem encountered Solution The Green LED keeps OFF Check power source cable and connector The Red LED keeps OFF all the time Check Albatros connections to the evaluation board Ensure the even on power on connector is not misplaced the connector pitch is quite small The GPS does not output any data and Check serial cable and connections Check the communication program the red LED is ON on the PC The default protocol on port A is the NMEA protocol at 4800 8 N 1 The alternate protocol on port A is the SiRF protocol at 19200 8 N 1 The communication port B does not output anything it is only designed to receive differential corrections The GPS does not output any data Ensure the red LED is ON at power up for at least two seconds If it is Port A and the red LED is OFF not look at the beginning of the table If it is then the GPS module may be in push to fix mode The push to fix cycle
5. Jack polarity does not matter MU AEK 037 SN USER S MANUAL PAGE 2 3 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 2 5 FUNCTIONS The Albatros Evaluation Kit mainly supplies the following functions Provide alimentation to the Albatros GPS receiver Provide RS232 interface to the GPS receiver for its two serial ports Port A does not provide hardware handshaking Port B can provide RTS CTS hardware handshaking Each port con independently be configured to use RS232 o 3 3V TTL electric levels with solder jumpers on the board Provide discrete I O for the module Three inputs and 6 outputs are available on the I O connector f Provide backup current source to maintain GPS data when the power is removed f Provide 20 pin JTAG interface to the SiRF GSP2e ARM microprocessor f A set of jumpers allows easy configuration of the board resources software downloading electric levels JTAG enable disable etc MU AEK 037 SN USER S MANUAL PAGE 2 4 JUNE 2000 f SENA ISSUE 1 LW aps REVISION 0 pe pe 3 1 ENVIRONMENT CONSIDERATIONS The evaluation board is intended to be used in soft environment and has not been designed for field operation or testing Hence when using the Albatros Evaluation Kit you may avoid these conditions f Exposure to water or moisture f Extreme temperatures 40 to 85 degrees C vibration 7 Electrostatic environments CAUTION the electronic devices must b
6. 6 SENA ISSUE 1 GPS REVISION 0 1 Click the Map View button or choose Map from the View menu The Map View screen is displayed 5 Clear GPS Time 46 10 Week 1 Mode 2 SV Lat 37 37166 Hdg 155 DOP 1 2 Lon 121 99761 Vel 2 730 Fix Unvalidated Alt 93 4 SVs Used in Fix 6 30 22 1 The current position is represented on the plot by a red dot while past positions are displayed in blue To change the map view preferences The ability to change the scale of the Map view and to select the appropriate smp file is provided by the Map view preferences 1 Double click on the Map View screen to display the Preferences window MU AEK 037 SN USER S MANUAL PAGE 5 10 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 E meters per pixel Cancel Center Current 2 Enter the number of meters you want each pixel to represent in the Meters Per Pixel field This value controls the map scale 3 Click the Center Current check box if you want the Map View to be centered 4 Select the appropriate smp file by either typing the path and file name or using the browse button 5 Click the Save button to save the changes or the Cancel button to exit 5 2 2 4 The Measured Navigation Message View Screen The Measured Navigation Message view screen is used to display position solution information such as GPS time GPS week position mode current position heading velocity D
7. FS c E SIRF Red gt DIVERSOS gt PROGS SIRFDEMO Guardar como tipo Unidades Ephemeris Files eph 2 Specify the file name that you want to save the ephemeris information to 3 Click the OK button to save or the Cancel button to exit Clicking the OK button saves the data to file A message box is displayed to confirm completion MU AEK 037 SN JUNE 2000 USER S MANUAL PAGE 5 39 SENA ISSUE 1 GPS REVISION 0 A A 6 MAINTENANCE 6 1 JUMPER SETTINGS The following table gives the jumper settings of the Evaluation Kit Board Table 6 a Jumper settings RS232 electric level for CTS B U1 must be present for correct operation 3 3V TTL electric level for RX B U1 MUST NOT be present for correct operation RS232 electric level for RX B U1 must be present for correct operation 3 3V TTL electric level for RX A U1 MUST NOT be present for correct operation RS232 electric level for RX A U1 must be present for correct operation 3 3V TTL electric level for RTS B U1 MUST NOT be present for correct operation RS232 electric level for RTS B U1 must be present for correct operation 3 3V TTL electric level for TX B UT MUST NOT be present for correct operation RS232 electric level for TX B U1 must be present for correct operation 3 3V TTL electric level for TX A UT MUST NOT be present for correct operation RS232 electric level for TX A U1 must be present for correct operation
8. Last Computed Altitude If the GPS Receiver is operating in 2D mode then the altitude will be held to the last known altitude calculated by the GPS Receiver Fixed to If the GPS Receiver is operating in 2D mode then the altitude will be held to the value entered in the FIXED TO field Degraded Modes Use Direction then Clock the number of available satellites is reduced to two the GPS Receiver will hold the elevation fixed and use the last direction and doppler values change in distance to continue positioning If the available satellites is then reduced to one the clock bias is then extrapolated Use Clock then Direction This mode is similar to the above Direction then Clock Hold mode However the clock bias is extrapolated first and then the direction and doppler measurements are used Direction Curb Hold Only This mode will restrict positioning to using direction hold only and does not use the extrapolating the clock bias method Two satellites need to be available Clock Time Hold Only Positioning is restricted to using the clock bias extrapolation method only and does not hold the direction Two satellites need to be available Disable Degraded Modes If less than three satellites are available no position will be calculated Timeout The GPS Receiver will only operate in any degraded mode for the period of time specified by the timeout default 60s Dead Reckoning Enable Dead Reckoning a position solution is n
9. Click the OK button to save or the Cancel button to exit MU AEK 037 SN USER S MANUAL PAGE 5 20 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 Note When the GPS Receiver is selected to operate usina the NMEA protocol the output messages can be viewed in the Development Data screen It can also be loaded bv usina the same technique as a SiRF binarv file Select 255 Development in the Loa File Settinas screen and Enable Development Data must be checked in the Messaaes field of the Receiver Initialization screen 5 2 3 6 Switching to the SiRF Protocol If you are already operating using the SiRF binary protocol this menu item is unavailable It can be used however with the NMEA protocol and if you want to change the operating protocol back to the SiRF binary protocol To change the operating protocol from NMEA to SiRF binary 1 Choose Switch to SiRF Protocol from the Action menu to return to the SiRF binary protocol 5 2 3 7 Sending a Serial Break Command This function sends a serial break on the current serial port 5 2 3 8 Synchronize Protocol and Baud Rate All GPS Receiver settings including selected protocol and serial port settings are held in battery backed SRAM If the GPS Receiver is powered off these settings will remain If the GPS Receiver is left in an unknown state it is difficult to regain communication with it The synchronize protocol and baud rate function attempt to communicate with the GPS R
10. Message View screen is used to display any error messages that the GPS Receiver may generate Error messages are generated automatically by the Albatros GPS Receiver under certain conditions Many are caused by normal GPS operations such as acquiring a low elevation satellite This could result in a bad parity To view the Error Message View screen 1 Choose Messages Error from the View menu MU AEK 037 SN USER S MANUAL PAGE 5 12 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 5 2 2 7 The Development Data View Screen The Development Data View screen displays additional information about the GPS Receiver operation The data is generated automatically by the Albatros GPS Receiver To view the Development Data View screen 1 Choose Messages Development from the View menu Note To view incomina development data the Enable Development Data checkbox must be enabled on the Receiver Initialization screen See Initializing the Data 7 5 2 2 8 The DGPS Status View Screen The Albatros GPS Receiver has two options for DGPS operation WAAS or external RTCM See Selecting the DGPS Source on page 5 33 for more information about each of these options The DGPS Status View screen provides information about the DGPS source and current operation To view the DGPS Status View screen 1 Choose Messages DGPS Status from the View menu 5 2 3 The Action Menu This section describes the SiRFdemo functions on the Ac
11. a Absolute maximum ratings eror ern anos re nnne 2 3 Table 2 6 CharacteristlCSs veniri ka asi d Ew ka a adl 2 3 Table 4 a Discrete I O connector pinout 4 2 Table 4 6 JP7 configuration 4 3 Table 4 c LED indicators io kk ao piy kl b nada En acr E V ida ard 4 3 Table 4 d L d k wild DU ki tet ka kk e e kata aj ek ake dpi e 4 5 Table 5 a 61 MENUS ss zwit ia ka a n aa kk ad bi a e e A ds 5 2 Table 5 b 12 Channel Signal Level View Information 5 7 Table 5 Status field value definition 5 7 Table 5 d Satellite color vid Ovens 5 7 Table 5 e Measured Navigation Message View Information 5 12 Table 5 f Messages than can be logged to a file 5 16 Table 5 q Reset TY P S s vis eee rece DG be pra onda 5 18 Table 5 h NMEA 0 8 5 20 Table 5 1 GPS Recelver kl sac 5 26 Table 5 Navigation Mode Options 5 30 Table 5 k S DOP MOU S asid set ia dl kt dok l e a 5 31 Table Sxl 2 DGPS MOUES kask Fa anal t a ek e ia 5 32 Table 5 m DGPS SOURCES iis liks kk n ali E a e n pk psa 5 34 Table Jumper setti
12. operating mode This mode allows a single selected satellite to be tracked by all 12 channels of the GPS Receiver To place the GPS Receiver into test mode 1 Choose Switch Operating Mode the Action menu The Switch Operating Mode screen is displayed MU AEK 037 SN USER S MANUAL PAGE 5 25 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 x C a fest Cancel poene Period seconds Use all 12 channels to track SV number 2 Select Test if you want to track a specific satellite on channels and output test results 3 In the Period field enter the output rate of the test reports in seconds 4 Enter the SV number that you want to be tracked by all 12 channels of the GPS Receiver 5 Select Normal default to track all available satellites 6 Send the command to the GPS Receiver by clicking the SEND button 5 2 3 15 Setting the TricklePower Parameters The Albatros GPS Receiver can operate in three modes shown in Table 5 i Table 5 i GPS Receiver Modes Description Full Power Full power mode is the standard operating mode Power is supplied to the unit continuously and the GPS Receiver continues to operate without an interrupt TricklePower In TricklePower mode the power to the SiRF chipset is cycled periodically so that it operates only a fraction of the time Power is applied only when a position fix is scheduled Push To Fix In Push to Fix mode the GPS Receiver is generally
13. screen is displayed MU AEK O37 SN USER S MANUAL PAGE 5 22 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 Baud Rate Data Bits Parity Stop Bits 2 Select the baud rate data bits parity and stop bits that you want to use for the DGPS serial port parameters from each pulldown menu 3 Click the Send button to accept or the Cancel button to exit Clicking the Send button resets the GPS Receiver and changes the protocol of the second port to RTCM and the serial port settings to the selected values Note The differential correction data source must be configured separately See Defining the Data Source on page 5 3 5 2 3 11 Setting the UART Configuration This function is not currently implemented 5 2 3 12 Uploading an Almanac to the GPS Receiver An almanac file is used by a GPS receiver to assist with locating and tracking available satellites If a current almanac file does not exist in the GPS Receiver due to a cold start or if it has not been used for a long period of time loading a recent almanac file will assist the GPS Receiver in locating and tracking satellites To upload an almanac file to the GPS Receiver 1 Choose Set Almanac from the Action menu The Specify Almanac Data Filename To Load screen is displayed MU AEK 037 SN USER S MANUAL PAGE 5 23 JUNE 2000 SENA ISSUE 1 WP ars REVISION 0 Specify Almanac Data Filename To Load 21 xl Nombre de archivo Carpetas
14. the Push to Fix mode is the most appropriate mode of operation for power sensitive situations In this mode the receiver turns on periodically approximately every 30 minutes to update ephemeris records and calibrate the clocks When all internal updating tasks are complete the unit powers itself off except for RTC and schedules the next wake up period When the GPS Receiver is power cycled externally a navigation solution will be available to the user in 3 seconds MU AEK 037 SN USER S MANUAL PAGE 5 27 JUNE 2000 f SENA ISSUE 1 WS GPs REVISION 0 5 2 4 The Navigation Menu This section describes the SiRFdemo software functions under the Navigation menu Setting Navigation Mode Control on page 5 28 Setting the DOP Mask Control on page 5 30 Setting the DGPS Mode on page 5 32 Selecting the DGPS Source on page 5 33 Selecting an Elevation Mask on page 5 34 Selecting a Power Mask on page 5 34 D p Steady State Detection on page 5 35 Navigation Poll Window Mode Control DOP Mask Control DGPS Mode DGPS Source Elevation Mask Power Mask Editing Residual Steady State Detection Static Wayigation 5 2 4 1 Setting Navigation Mode Control Navigation mode control is used to configure the specifics of how the GPS Receiver is to navigate or calculate a position In particular selecting how a position should be derived if a minimum number of satel
15. 5 12 5 2 2 7 The Development Data View Screen 5 13 5 2 2 8 The DGPS Status View 5 13 5 2 3 The Action ket e ta ik e ai a 5 13 5 2 3 1 Opening Data SOURCE akite aw l a kak asa a aa 5 14 5 2 3 2 Opening a Log File 5 15 5 2 3 3 Pause the Display aie kai ksion Be Pon as a ik in 5 16 MU AEK O37 SN USER S MANUAL PAGE II JUNE 2000 SENA ISSUE 1 GPS REVISION 0 5 2 3 4 Initializing the Data Source 5 17 5 2 3 5 Switching to the NMEA Protocol 5 19 5 2 3 6 Switching to the SIRF Protocol 5 21 5 2 3 7 Sending a Serial Break Command 5 21 5 2 3 8 Synchronize Protocol and Baud Rate 5 21 5 2 3 9 Setting the Main Serial Port 5 22 5 2 3 10Setting the DGPS Serial Port Parameters 5 22 5 2 3 11Setting the UART Configuration 5 23 5 2 3 12Uploading an Almanac to the GPS Receiver 5 23 5 2 3 13Uploading an Ephemeris to the GPS Receiver 5 24 5 2 3 14Switching Operating 5 25 5 2 3 15Setting the TricklePower Parameters 5 26 5 2 4 The Navigation Menu 5 28 5 2 4 1 Setting Navigation Mode Control 5 28 5 2 4 2
16. A format Refer to Albatros user s manual from SENA GPS for more information on communication modes This port is also used to download new software releases in the GPS receiver Jumpers JP3 JP6 can configure the electric levels of this port The default configuration is RS232 electric levels Note that these jumpers are footprint jumpers to switch to 3 3V TTL electric levels it is necessary to remove U3 RS232 driver and to short the jumpers with solder Port A does not provide handshaking 4 2 2 Serial port B This port is used to receive differential corrections DGPS Jumpers JP2 JP5 can configure the electric levels of this port The default configuration is RS232 electric levels Note that these jumpers are footprint jumpers to switch to 3 3V TTL electric levels it is necessary to remove U3 RS232 driver and to short the jumpers with solder MU AEK 037 SN USER S MANUAL PAGE 4 1 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 Port B can provide RTS CTS handshaking The RTS CTS electric levels can also be configures with JP1 JP4 4 3 DISCRETE I O CONNECTOR This 9 pins male Sub D connector provides 9 discrete I O lines 3 inputs and 6 outputs Table 4 a Discrete I O connector pinout W 001 penn 1 MOU 001 OUTATIMEMARK 111 11 1 01 OUT1 OUT2 4 3 1 INP2 DBGEN input The INP2 input signal is shared with the DBGEN input This setting is configur
17. DISCRETE I O 4 2 4 3 1 INP2Z DBGEN APWE one t vodoo kaa nn 4 2 4 3 2 OUTA TIMEMARRK output w vise ii w aa a va hi kk kan 4 2 44 JTAG CONNECTOR 4 2 MU AEK O37 SN USER S MANUAL PAGE I JUNE 2000 a SENA ISSUE 1 GPS REVISION 0 4 5 LED INDICATORS siesuninseeeerersnsteneteuariisatest 4 3 46 SWITCH pistes amen te rati f a a a n tra ae 4 4 4 7 BACKUP BATTERY setenta bata sen pta a a pisans abit ka eain 4 4 4 8 TEST POLI TS reisin ay stan E a pak ak ep UD 4 4 5 INCLUDED SOFTWARE iiissuxse ka tt m k a n esca 5 1 5 1 SIRFELA SI P 5 1 5 2 SIRFDEMO ab a aa m a klan UNE 5 1 5 2 1 bay bata koko ea bil 5 2 5 2 1 1 Defining the Data Source 5 3 5 2 1 2 Changing Preferences eese nnne 5 4 5 2 1 3 Exit the SiRFdemo Software 5 5 5 2 2 The VIEW Miti d dada wa qnia it wan 5 5 5 2 2 1 The 12 Channel Signal Level View Screen 5 6 5 2 2 2 The Tracking View Screen 5 7 5 2 2 3 The Map View Screen 5 9 5 2 2 4 The Measured Navigation Message View Screen 5 11 5 2 2 5 The Response View Screen 5 12 5 2 2 6 The Error Message View
18. ER S MANUAL PAGE 5 17 JUNE 2000 SENA ISSUE 1 GPS REVISION 0 Table 5 g Reset types 5 The stored 111011 and almanac are both valid 22 EFE ae eee data and retains all other data Warm Start init This option clears all initialization data in the GPS Receiver and subsequently reloads the data that is currently displayed in the Receiver Initialization Setup screen The almanac is retained but the ephemeris is cleared Cold Start This option clears all data that is currently stored in the internal memory of the GPS Receiver including position almanac ephemeris time and clock drift all GPS Receiver parameters back to the factory defaults 3 If you selected the Warm Start Init reset mode enter or load the X Y and Z coordinates for the current position of the GPS Receiver You can load a file containing the X Y Z coordinates by clicking the Load button Specify a Name for the Position File i 21 Nombre de archivo Carpetas Aceptar e c diversos progs sirfdemo Cancelar di SIRF POS gt c SIRF Red DIVERSOS 65 Progs E gt SiriDema vi H w Mostrar archivos de tipo Unidades Position Files pos 4 Select the appropriate file sample Sirf pos configuration file 5 Click the OK button to accept or the Cancel button to exit The Receiver Initialization Setup screen is displayed again 6 Type 96 000 in the Clock field 96 000 is a typical c
19. O RESPONSIBILITY FOR POSSIBLE DAMAGE OCCURRING DURING TRANSPORT bi SENA GPS TECHNICAL SERVICE SIGNATURE AVDA DE EUROPA 21 PARQUE EMPRESARIAL LA MORALEJA 28100 ALCOBENDAS MADRID Tel 34 91 657 21 70 Fax 34 91 657 49 35 Email senagps senagps com Web www senagps com MU AEK 037 SN USER S MANUAL PAGE 7 1 JUNE 2000 f SENA ISSUE 1 WS crs REVISION 0 9 pe Service and information is available on SENA GPS web site http www senagps com Disclaimer GPS receiver unit specifications and manuals are subject to change without notice SENA GPS assumes no liability for damage incurred directly or indirectly from errors omissions or discrepancies between the GPS receiver unit and their manuals Trademarks Some mentioned products are registered trademarks of SENA GPS Copyright This manual is copyrighted by SENA GPS with rights reserved No part of this manual may be reproduced in any form without the prior written permission of SENA GPS No patent liability is assumed with respect to the use of the information contained herein MU AEK 037 SN USER S MANUAL PAGE 8 1 JUNE 2000
20. OP type of position fix and satellites tracked To view the Measured Navigation Message View screen 1 Choose Messages Navigation from the View menu The Measured Navigation Message View screen is displayed x Y 7 Position 2689232 4304067 3850255 Velocity m s 1 250 2 625 4 000 Lat 37 37129 Lon 121 99763 Alt 55 Mode 2 SY GPS Week 1 DOP 10 0 Fix Unvalidated Time 77 10 4 S s Used in Fix 17 3 21 15 MU AEK 037 SN USER S MANUAL PAGE 5 11 JUNE 2000 SENA ISSUE 1 GPS REVISION 0 Table 5 e Measured Navigation Message View Information Information displayed _ X Y 2 positions Latitude User s latitude decimal of degrees Mode Navigation solution type GPS Week GPS week number ed ime Current GPS time seconds s Used in Fix Sv PRN used in solution Note ECEF XYZ is converted aeodetic latitude lonaitude and altitude based on the WGS84 ellipsoid parameters 5 2 2 5 The Response View Screen The Response View screen is used to display any response to a poll request You can poll the GPS Receiver for the software version see The Software Version on page 5 36 clock status see The Clock Status on page 5 37 and navigation parameters see The Navigation Parameters on page 5 37 To display the Response View screen 1 Choose Messages Response from the View menu 5 2 2 6 The Error Message View Screen The Error
21. PC 1 Choose Switch to NMEA Protocol from the Action menu The Select NMEA Messages screen is displayed MU AEK 037 SN USER S MANUAL PAGE 5 19 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 Select NMEA Messages x NMEA Messages Update Rate 1 n Seconds Baud Rate 4800 Use Checksums 2 Select the NMEA Messages that you want to use by clicking on the required message Table 5 h provides a brief description of each of the available NMEA messages Table 5 h NMEA Messages Description GA Time position and fix related data for a GPS receiver ni Latitude and longitude of present position time of position fix and status GPS receiver operating mode satellites used in the position solution and DOP values 22 l Signal to noise ratio signal strength frequency and bit rate from a radio beacon receiver Time date position course and speed data provided by the GPS receiver The actual course and speed relative to the ground G G G G M R GA LL SA SV The number of GPS satellites in view satellite ID numbers elevation azimuth and SNR values Ss MC 3 Select the update rate for each NMEA message that you want to use from the corresponding Update Rate pulldown menu Each NMEA message can be output at a maximum rate of 1 per second and at a minimum rate of 1 per 255 seconds 4 Select the baud rate that you want to use from the Baud Rate pulldown menu 5
22. Setting the DOP Mask Control 5 30 5 2 4 3 Setting the DGPS 5 32 5 2 4 4 Selecting the DGPS 5 33 5 2 4 5 Selecting an Elevation 5 34 5 2 4 6 Selecting a Power 5 34 5 2 4 7 Steady State Detection 5 35 5 2 5 The Pol Miss uta did 5 36 5 2 5 1 The Software bene cadi ende mi i eds 5 36 5 2 5 2 The COCK SEtatilsscicerravndtseQed a oris RD Prata dieci 5 37 5 2 5 3 The Navigation 5 37 MU AEK 037 SN USER S MANUAL PAGE III JUNE 2000 a SENA ISSUE 1 GPS REVISION 0 5 2 5 4 Downloading an Almanac File 5 37 5 2 5 5 Downloading Ephemeris Data 5 38 6 6 1 6 1 JUMPER SETTINGS if a ek ua si pa 6 1 6 2 TROUBLESHOOTING Guide 6 2 6 3 SOFTWARE DOWNLOADING 6 2 7 WARRANTY uxssssnssupsunxbuERUESRE KDE INN UNUM m kk kk l kk RUNE 7 1 8 GENERAL INFORMATION enne nnm nnn 8 1 MU AEK 037 SN USER S MANUAL PAGE IV JUNE 2000 a SENA ISSUE 1 GPS REVISION 0 TABLE INDEX Table 2
23. View Menu on page 5 5 for detailed information about the View menu Action The Action menu provides access to most of the SiRFdemo functionality including configuration of the GPS Receiver and data logging for later analysis See The Action Menu on page 5 13 for detailed information about the Action menu Navigation Navigation The Navigation menu lets you configure items that effect how a position solution is acquired or the type of position needed From the Navigation menu you can set various operating masks the DGPS mode and the DGPS source See The Navigation Menu on page 5 28 for detailed information about the Navigation menu You use the Poll menu to obtain GPS Receiver information such as software version navigation parameters and clock status You can also use the Poll menu to obtain the latest ephemeris and almanac See The Poll Menu on page 5 36 for detailed information about the Poll menu The commands on the Window menu are standard Windows commands Cascade Tile etc Note The values that appear in the dialoa boxes are GPS Receiver default values and not what is currentlv set in the GPS Receiver See The Naviaation Parameters on paae 5 37 to determine the current settings of naviaation parameters 5 2 1 The Setup Menu This section describes the SiRFdemo functions on the Setup menu Defining the Data Source on page 5 3 Changing Preferences on page 5 4 f To Exit the SiRFdemo Software on p
24. acking This file may also be used for mission planning and constellation investigations To download an almanac file 1 Choose Almanac from the Poll menu The Specify Almanac Data Filename To Load screen is displayed MU AEK 037 SN USER S MANUAL PAGE 5 37 JUNE 2000 A SENA ISSUE 1 GPS REVISION 0 Nombre de archivo Carpetas Aceptar c diversos progs sirfdemo Cancelar A E cs SIRF Red gt DIVERSOS 25 PROGS E SIRFDEMO Guardar como tipo Unidades Almanac Files alm 2 Specify the file name in which to save the almanac information 3 Click the OK button to save or the Cancel button to exit Clicking the OK button saves the data to file A message box is displayed to confirm completion 5 2 5 5 Downloading Ephemeris Data You can download an ephemeris file from the GPS Receiver and load it back into the unit at a later date or to another GPS Receiver This is to assist with initial position calculations This file may also be used for mission planning and constellation investigations To download an ephemeris file 1 Choose Ephemeris from the Poll menu The Specify Ephemeris Data Filename To Load screen is displayed MU AEK 037 SN USER S MANUAL PAGE 5 38 JUNE 2000 A SENA 72 GPS ISSUE 1 REVISION 0 Specify Ephemeris Data Filename To Save 4 2 xl Nombre de archivo Carpetas c diversos progs sirfdemo Cancelar
25. ackup accumulator capacitor The jumper J10 allows connecting this accumulator The factory setting of this jumper is Left Open to avoid discharge of the accumulator during shipping Note If vou wish to chanae the fitted accumulator for example to increase OFF time autonomv vou must onlv connect recharaeable accumulators Never use non recharaeable batteries that could damaae the board and personal inju 4 8 TEST POINTS The board provides test points that allow the user to measure or define various parameters MU AEK 037 SN USER S MANUAL PAGE 4 4 JUNE 2000 SENA ISSUE 1 GPS REVISION 0 Table 4 d Test points Test point 1 GND Ground TP2 VBK backup alimentation measurement Note that this voltage will not be the same as the fitted accumulator capacitor e With power applied the voltage measured on TP2 will be around 3 3V e Without power applied the voltage measured on will be a little less than the backup accumulator voltage VCC should be around 3 2V VANT external source for 5V active antenna In order to use a 5V active antenna it is necessary to e Supply 5VDC on TP4 Change antenna power configuration on the Albatros GPS module See the Albatros User s Manual for more details MU AEK 037 SN USER S MANUAL PAGE 4 5 JUNE 2000 f SENA ISSUE 1 WS crs REVISION 0 5 1 SIRFFLASH This program allows the user to download a new software release in the Albat
26. age 5 5 Setup View Action Navigat Data Source Preferences About SiRFstar Demo Exit MU AEK 037 SN USER S MANUAL PAGE 5 2 JUNE 2000 f SENA ISSUE 1 2 GPS REVISION 0 5 2 1 1 Defining the Data Source The SiRFdemo software is capable of receiving data from different sources You can configure the software to receive data directly from a connected Albatros Evaluation Kit or generate its own random data To configure the source of the data used by the SiRFdemo software 1 Click the Data Source button or choose Data Source from the Setup menu The Data Source Setup screen is displayed Data Source Setup 1 C Random Supplied Data Cancel Simulator Truth Data C Serial Port Baud Rate if li Time of Week ms iu Instrument Measured Data fe Serial Port 1 Baud Rate 19200 vi 2 Select either the Supplied Data or Random option f Random option uses randomly generated data Use this option to verify that the SiRFdemo software is running without the GPS Receiver connected f With Supplied Data option the software will use real data from a GPS Receiver Note The Simulator Truth Data option is not Do not use the File radio button This MU AEK 037 SN USER S MANUAL PAGE 5 3 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 3 To use data directly from the Albatros Evaluation Kit select the Serial Port radio button Use the select
27. al strength below a selected value To exclude satellites from the position solution with a signal strength below a selected value 1 Choose Power Mask from the Navigation menu The Power Mask screen is displayed Power mask 0 Set minimum satellite signal power to be required for Cancel Tracking dBHz Navigation dBHz 2 Enter the minimum satellite signal level for satellites to be used in any position solution 3 Click the Send button to accept or the Cancel button to exit 5 2 4 7 Steady State Detection The steady state detection allows the navigating algorithms to decrease the noise in the position output when the acceleration is below the threshold This improves position accuracy especially in stationary applications To select the static navigation mode 1 Choose Static Navigation from the Navigation menu The Static Navigation screen is displayed C Disable Enable Threshold m s 2 2 Select the option that you want to use MU AEK 037 SN USER S MANUAL PAGE 5 35 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 3 Click the Send button to accept or the Cancel button to exit 5 2 5 The Poll Menu This section describes the SiRFdemo software functions under the Poll menu The Software Version on page 5 36 The Clock Status on page 5 37 The Navigation Parameters on page 5 37 Downloading an Almanac File on page 5 37 e 8 S D B Downloading Ephemer
28. atellites available Use GDOP only Only the GDOP mask will be used regardless of the number of satellites available No DOP based mask will be applied Any available position will be output regardless of any of the DOP values This is the default 3 Enter a DOP mask value for the corresponding selected DOP mask For each of the DOP masks the default value is 10 This value is a maximum value and the mask will apply if the current set mask is exceeded 4 Click the Send button to accept or the Cancel button to exit MU AEK 037 SN USER S MANUAL PAGE 5 31 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 5 2 4 3 Setting the DGPS Mode The DGPS mode is used to control the position output of the GPS Receiver based on whether positions are differentially corrected or not The options include automatic exclusive and never use To set the DGPS mode 1 Choose DGPS Mode from the Navigation menu The DGPS Control screen is displayed x Timeout sec Mode Automatic C Exclusive C Never use 2 Select the Mode that you want to use Table 5 1 DGPS Modes Automatic Use differential corrections when they are available otherwise compute a non differential solution see note below This is the default Exclusive Only compute a differential solution If no corrections are available no solution is output Never use Only compute a non differential solution even if corrections are valid 3 Enter the timeout
29. ble 2 2 RELATED DOCUMENTATION Albatros User s Guide from SENA GPS code MU ALB 036 SN MU AEK 037 SN USER S MANUAL PAGE 2 1 JUNE 2000 SE ISSUE 1 GPS REVISION O 2 3 PRODUCT PRESENTATION The Albatros Evaluation Kit Motherboard provides the necessary interface to test the Albatros GPS receiver lines 0223 04 0566 7 Weer a 287 e 19 P N S 010307 995 S N E Li Backup Albatros LED capacitor GPS receiver indicators See INTERFACES DESCRIPTION on page 4 1 for more details Main power jack MU AEK O37 SN USER S MANUAL PAGE 2 2 JUNE 2000 SENA ISSUE 1 GPS REVISION 0 2 4 ELECTRICAL CHARACTERISTICS 2 4 1 Absolute maximum ratings Table 2 a Absolute maximum ratings Input Pin Voltage on discrete inputs RS323 inputs 1 negative value denotes that jack polarity does not matter Warning Sitressing the device beyond the Absolute Maximum Ratings may cause permanent damage These are stress ratings only Operation beyond the Operating Conditions is not recommended and extended exposure beyond the Operating Conditions may affect device reliability 2 4 2 DC Characteristics Table 2 b DC Characteristics pen All discrete output pins loh 2mA v Output iow teve An discrete output pins io 2mA v MM fAldscreteinoutpins Input Capacitance All discrete output pins
30. d to a file 017 Raw DGPS 255 Various AAA 5 2 3 3 Pause the Display All of the open windows can be paused to allow easy viewing of the existing data without receiving any further data To pause all of the open windows 1 Click the Pause button or choose Pause Display from the Action menu Note No data is logged while the display is paused MU AEK 037 SN USER S MANUAL PAGE 5 16 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 5 2 3 4 Initializing the Data Source You can reset or initialize the GPS Receiver directly through the SiRFdemo software This function may be used to demonstrate or evaluate the GPS Receiver s recovery ability under different circumstances To perform a receiver reset or allow Raw Track or Development data to be output from the GPS Receiver 1 Click the reset button or choose Initialize Data Source from the Action menu The Receiver Initialization Setup screen is displayed Receiver Initialization x Position X Send Load Y Z p Use Curent DOS Time Week Number lime of Week p 5 Channels Reset Mode Messages C Hot Start Enable Raw Track Data Warm Start No Init Enable Development Data C Warm Start Init 2 Select type of Reset Mode by clicking on the associate radio button Each of the reset types are described in Table 4 7 MU AEK 037 SN US
31. e protected from electrostatic discharaes Use a arounded area when manipulatina the boards 3 2 CONNECTING THE EVALUATION KIT To operate the Albatros Evaluation Kit connect the power cable to the power source and the GPS antenna to the antenna connector Use the serial cable to connect the board to an appropriate serial communications port on the PC computer Note that Port A is the standard serial communication port and Port B is used for differential input The default protocol on port A is the NMEA protocol at 4800 8 N 1 The alternate protocol on port A is the SiRF protocol at 19200 8 N 1 3 3 INSTALLING THE SOFTWARE To install the toolkit software MU AEK 037 SN USER S MANUAL PAGE 3 1 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 f Insert the Albatros Evaluation Kit CD into your CD ROM drive f Copy the directory and contents of the tools directory from the CD to your hard drive MU AEK 037 SN USER S MANUAL PAGE 3 2 JUNE 2000 f SENA ISSUE 1 WS ars REVISION 0 4 1 POWER CONNECTOR The Albatros Evaluation Kit must be alimented with a 6 to 12 Volt DC source The jack connector has the following characteristics external diameter 5 5 mm Internal diameter 2 1 mm The polarity does not matter since the board accepts any polarity 4 2 SERIAL PORTS 4 2 1 Serial port A This port is the Albatros main serial port During normal operation it outputs navigation data in SiRF or NME
32. eceiver using all possible baud rates and both NMEA and SiRF binary protocols When communication is established with the GPS Receiver it is set to the SiRF binary protocol and at a baud rate of 19200 Other serial settings of parity data bits and stop bits are left at current settings MU AEK 037 SN USER S MANUAL PAGE 5 21 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 5 2 3 9 Setting the Main Serial Port The Set Main Serial Port function lets you change the baud rate of the serial port connected to the GPS Receiver and the serial port of the PC To change the baud rate of the port used by the GPS Receiver and the PC 1 Choose Set Main Serial Port from the Action menu The Set Serial Port Parameters screen is displayed Baud Rate 19200 w Data 8 Fi Stop Bits 1 Fi 2 Select the baud rate you want to use 3 Click the Send button to accept or the Cancel button to exit Clicking the Send button resets the GPS Receiver and computer s serial port to start communicating using the new baud rate 5 2 3 10 Setting the DGPS Serial Port Parameters The Set DGPS Serial Port Parameters function will configure the second serial port the serial port not currently used by the SiRFdemo software of the GPS Receiver for reception of RTCM data To configure the available port for RTCM reception 1 Choose Set DGPS Serial Port from the Action menu The Set DGPS Serial Port Parameters
33. ed by the jumper JP7 See JTAG CONNECTOR on page 4 2 for more details 4 3 2 OUT4 TIMEMARK output During normal operation the OUT4 TIMEMARK pin outputs an accurate pulse per second signal The signal level is according to the Table 2 b DC Characteristics 4 4 JTAG CONNECTOR The Multi ICE interface is provided through a 20 pin header where the Multi ICE connector will plug in This interface is an extension version of JTAG interface IEEE 1091 compliant which provides control of the GSP2e internal ARM core More details of Multi ICE are provided in ARM Multi processor EmbeddedICE Interface Unit User Guide at web site MU AEK 037 SN USER S MANUAL PAGE 4 2 JUNE 2000 SENA ISSUE 1 GPS REVISION 0 The GSP2e ARM processor provides a hardware protection against ICE debugging through the pin INP2 JTAGEN of the Albatros GPS module The jumper JP7 allows the user to configure the ICE lock Table 4 b JP7 configuration JP7 configuration Multi ICE state INP2 not connected Debug may be enabled 2 3 INP2 is connected Multi ICE may not be able to operate depends on INP2 level on I O connector A low level will lock the debug port default configuration Note the JP7 confiauration remains dependent of the current version of the software runnina on the Albatros GPS module Some versions of the software can force ICE lock independently of JP7 setting and INP2 input level Note In 2 3 confiauration t
34. en 1 Click the Signal Level View button or choose Signal Level from the View menu MU AEK 037 SN USER S MANUAL PAGE 5 6 JUNE 2000 SENA ISSUE 1 GPS REVISION 0 Table 5 b 12 Channel Signal Level View Information Information displayed Description Satellite Number SV The GPS satellite PRN number Status St The status of each satellite tracked see Table 5 c Status field value definition for more information Azimuth Az Satellite azimuth in degrees Elevation El Satellite elevation in degrees with the horizon being zero degrees in elevation and directly over head being ninety degrees Signatlevel in dB Hz Signal Level 5 sec 5 second history of the measured signal strength Table 5 c Status field value definition Hex value oxo Setiracyresegisdonesuceessfully 0000 0000 seBismecompeedfag x08 Set Subfiame syne has been done A oo set Failed to acquire NY Note When a channel is fully locked and all data is valid the status shown is OxBF The information displayed in the Signal Level view is also assisted by color coding As the tracking status of each satellite changes the associated text and signal levels are colored to represent the current status see Table 5 d Table 5 4 Satellite color coding Color Description The satellite is being tracked and is being used in the current position solution
35. he lock depends on INP2 state If INP2 input is hiah or left open and if the software is not protected the Multi ICE will operate correctly 4 5 LED INDICATORS The Albatros Evaluation Kit provides two LED indicators Table 4 c LED indicators LED Indicator Function Green DL1 DC IN ON when power is applied to the board Red DL2 ON STANDBY when the GPS is ON OF when the GPS is OFF in push to fix OFF mode Note the areen LED should alwavs be ON when power is connected Note on power on the red LED should keep ON al least two seconds then it can aet OFF if the GPS module is confiaured for push to fix mode If it is not check the GPS module connections MU AEK 037 SN USER S MANUAL PAGE 4 3 JUNE 2000 GPS REVISION 0 f SENA ISSUE 1 4 6 RESET SWITCH The switch 51 resets the Albatros GPS module Note that a module reset will not cause a cold start of the GPS it will just reset the processor A cold start will only be executed if one of the following occurs f The non volatile RAM backup battery is exhausted or removed This will occur if the power is removed during a long time or if the Albatros GPS module is removed from its connector f The user sends a cold start order to the GPS module This can be done while in SiRF mode or in NMEA mode See the Albatros user s manual for more details on SiRF and NMEA protocols 4 7 BACKUP BATTERY The Evaluation Kit Board if fitted with a b
36. ion lists to choose the serial port to which the GPS Receiver is connected on your PC and the correct baud rate 4 Click the OK button to continue 5 2 1 2 Changing Preferences You can change the appearance of some of the view windows to suit your personal preferences View preferences include the Signal Level view the Tracking view and the Map view To change the appearance of the view windows 1 Choose Preferences from the Setup menu The Preferences screen is displayed x Signal Graph Type C Bar Cancel C Line North Up meters per pixel Heading Up Centered Position Tracking Orientation Yiew 2 Select the type of signal graph that you want to view on the 12 Channel Signal Signal Graph Type Bar Displays the data with vertical bars to represent the observed signal strength of each satellite Line Displays the data in a continuous line graph form 3 Select the direction of the tracking orientation that you want to use in the Tracking View screen Tracking orientation North Up True north points to the top of the circle MU AEK 037 SN USER S MANUAL PAGE 5 4 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 Heading Up This is typically used when driving in a vehicle or if the receiver is moving Current heading points to the top of the circle 4 To change the scale of the Map view type the number of meters you want each
37. is Data on page 5 38 Poll Window Clock Status Navigation Parameters Almanac Ephemeris 5 2 5 1 The Software Version The poll software version function allows you to query the GPS Receiver for the version of embedded software currently being run To view the current software version 1 Choose SW Version from the Poll menu The Response View screen is displayed showing the software version currently being run MU AEK 037 SN USER S MANUAL PAGE 5 36 JUNE 2000 f SENA ISSUE 1 a GPS REVISION 0 5 2 5 2 The Clock Status The poll clock status function allows you to query the GPS Receiver for clock performance information including the GPS week number GPS time clock drift and clock bias To poll the GPS Receiver for clock status information 1 Choose Clock Status from the Poll menu The Response View screen is displayed with the clock status 5 2 5 3 The Navigation Parameters All of the user settings that have been set under the Action and Navigation menus can be polled for their current status and settings To poll the GPS Receiver for it s current navigation parameters 1 Select Navigation Parameters from the Poll menu The current settings are displayed in the Response View window 5 2 5 4 Downloading an Almanac File You can download an almanac file from the GPS Receiver and load it back into the unit at a later date or to another GPS Receiver This is to assist with initial satellite tr
38. lites are not available to calculate a full 3D position To set the navigation mode control 1 Choose Mode Control from the Navigation menu The Navigation Mode Control screen is displayed MU AEK 037 SN USER S MANUAL PAGE 5 28 JUNE 2000 ISSUE 1 REVISION 0 Navigation Mode Control iv iv 9 Dynamic Input 2 Select the required options Table 5 j describes each of the navigation mode options available MU AEK 037 SN USER S MANUAL PAGE 5 29 JUNE 2000 SENA ISSUE 1 GPS REVISION 0 Table 5 j Navigation Mode Options Enable Track Smoothing Enables smoothing of the calculated positions based on acceptable variances from the last calculated position This assists in eliminating any sporadic position possibly caused by multipath for example Enable Altitude Constraint Restrict any variations in the altitude to 10 of currently calculated horizontal variation This assists in creating a smoother ground track Altitude Hold Mode Automatic Switch automatically to a 2D solution and hold the altitude fixed if only three satellites are available A 3D solution will be calculated if four or more satellites are available Always Stay in 2D mode regardless of the number of satellites available The altitude will always remain fixed Disable Altitude Hold Only calculate 3D solutions If it is not possible to calculate a 3D solution due to insufficient satellites then no navigation will be provided
39. lock drift value of the crystal in the GPS Receiver Note If vou tvpe in the Clock field the GPS Receiver uses its last stored value or a default of 96 000 if no prior stored value is available MU AEK 037 SN USER S MANUAL PAGE 5 18 JUNE 2000 SENA ISSUE 1 GPS REVISION 0 7 Click on or off the Use current DOS time check box The default value is set to the current time 8 Type the number of the week in the Week Number field 9 Type the time of the week in the Time of Week field 10 Type number of channels in the Channel field You can specify from 1 to 12 channels 11 Click on Enable Raw Track Data to Log Raw Track Data 005 Raw Track Data must also be highlighted on the Log File Settings Screen See Opening a Log File on page 5 15 12 Click on Enable Development Data to turn on message 255 The content of this message is displayed in the Development Data View Note When the Development and Raw Data is selected for loaaina the baud rate of the SiRFdemo software and the GPS Receiver is automatically chanaed to 57600 This is to ensure 13 Click the Send button to initialize or the Cancel button to exit 5 2 3 5 Switching to the NMEA Protocol The Albatros GPS Receiver supports the NMEA protocol Rather than operating in the SiRF binary protocol you may change the protocol to NMEA for the port that is currently connected To change the protocol to NMEA for the port currently connected to your
40. may be as long as 30 minutes An easy way to erase push to fix configuration is to remove the GPS receiver from its connector and plug it again The GPS does not see any satellites The antenna must be placed outside any building with a good visibility of the sky Trees and buildings affect signal quality The antenna must not be covered with conductor materials metal case metallic paint etc Check the antenna connector Avoid connecting and removing frequently the antenna thus it could damage the RF connector 6 3 SOFTWARE DOWNLOADING The Albatros OEM GPS Receiver allows software actualizations Follow these steps to download the new software image in the receiver f Turn the evaluation board power OFF f Configure jumper JP9 in 1 2 position f Connect the serial port A to a PC with Windows 95 98 2000 Me with the provided serial cable f Execute the program SiRFFlash exe You will get the following screen MU AEK 037 SN USER S MANUAL PAGE 6 2 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 SiRFflash on COM1 Input selections Progress Activity selection Xfer Program flash Read flash Prog Communication settings Programming options LO ES Timing sec com gi Erase relevant sectors only Total 00 Erase 00 Burn 00 f Erase whole chip Baud rate E Update Flash info Flash location settings Read settings Ma
41. ngs 6 1 Table 6 b Troubleshooting 0 8 6 2 MU AEK O37 SN USER S MANUAL PAGE V JUNE 2000 f SENA ISSUE 1 WS crs REVISION 0 The Albatros OEM GPS Receiver from SENA GPS is a new OEM GPS receiver product that features the revolutionary SiRFStar II chipset This complete 12 channel provides a vastly superior position accuracy performance in a much smaller package The SiRFStar II architecture built on the high performance SiRFStar I core adding acquisition accelerator differential GPS processor multipath mitigation hardware and satellite tracking engine Albatros delivers major advancements in GPS performance accuracy integration computing power and flexibility The Albatros Evaluation Kit provides all the necessary tools and components to allow the customer to easily start test evaluate and integrate the Albatros GPS receiver in his own design MU AEK 037 SN USER S MANUAL PAGE 1 1 JUNE 2000 f SENA ISSUE 1 WAP GPS REVISION 0 2 1 PACKAGE CONTENTS The Albatros Evaluation Kit package contains the following components Albatros Evaluation Kit Motherboard 7 Albatros GPS Receiver f User s guide this guide f Evaluation kit CD contains PC software documentation in PDF format Active 3V GPS antenna Power supply adaptor f Serial ca
42. nufacturer Chip select From address Model Chips Toaddress file info File selection File type 7 Browse Lowest address Highest address Action we mou 5 In Communication settings select the COM port to use in the PC In File selection type the name of the image to download Turn the evaluation board power ON 5 Click on Execute and wait for download completion f Turn the evaluation board power OFF f Configure the jumper JP9 in open position no pins connected remove jumper JUNE 2000 SENA ISSUE 1 GPS REVISION 0 AW PA CERTIFICATE OF WARRANTY MODEL ALBATROS EVALUATION KIT SERIAL NUMBER DATE OF SALE DATE OF INSTALATION BUYER NAME ADRESS CITY SENA GPS S A GUARANTEES THIS EQUIPMENT AGAINST ANY MANUFACTURING DEFECT FOR A PERIOD OF ONE YEAR AFTER THE DATE OF PURCHASE INCLUDING COMPONENTS AND LABOUR REQUIRED FOR FACTORY REPLACEMENT OF THE DEFECTIVE PIECES EXCLUDED FROM THIS GUARANTEE ARE PROBLEMS DUE TO INCORRECT INSTALLATION MISUSE OR MISHANDLING OF THE EQUIPMENT INTERNAL MANIPULATION BY PERSONS OTHER THAN THE MANUFACTURER OR HIS AUTHORIZED TECHNICAL ASSISTANCE SERVICES SHALL ALSO VOID THIS WARRANTY IN THE CASE OF DAMAGE SEND THE EQUIPMENT DULY PACKAGED POSTAGE PAID WITH A COPY OF THE PURCHASE INVOICE OR THE WARRANTY CERTIFICATE WE ACCEPT N
43. off but turns on frequently enough to collect ephemeris data to maintain the GSP2 real time clock calibration so that upon user request a position fix can be provided quickly after power up MU AEK 037 SN USER S MANUAL PAGE 5 26 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 TricklePower In this mode the power to the GRF2i chip is cycled regularly according to two user specified parameters e Update Rate e OnTime During TricklePower operation the GRF2i chip is powered on for OnTime in milliseconds then powered off for specified number of milliseconds as determined by the update rate This cycle repeats indefinitely The GSP2e chip is not explicitly powered down but its primary operation is driven by the GPS clock generated by the GRF2i so it draws very little power while the GRF2i is powered down The real time clock RTC portion of the GSP2e continues operation at all times and is used to generate the interrupt that turns everything back on The microprocessor on which the SiRF code executes is not explicitly powered down After the OnPeriod has elapsed the processor continues operating long enough to complete its navigation tasks then puts itself in sleep mode until it is reawakened by the RTC generated interrupt The default parameters values are e OnPeriod 200ms e Update Rate 1 second Push to Fix For applications where a position fix is required on demand that is not continuous then
44. on 3 Click the OK button to accept or the Cancel button to exit WAAS Channel The GPS Receiver will use the WAAS correction service if available One of the twelve channels will be dedicated to the WAAS signal 5 2 4 5 Selecting an Elevation Mask GPS satellites that are low on the horizon are subject to noise due to the amount of atmosphere that the signal must travel through Better position accuracy is often achieved if lower elevation satellites are not used in the position solution The elevation mask is used to exclude the use of satellites in the position solution that are below a defined elevation mask To select an elevation mask 1 Choose Elevation Mask from the Navigation menu The Elevation Mask screen is displayed Elevation Mask P x Set minimum satellite elevation angle to be required for Cancel racking degrees Navigation degrees 2 Enter the minimum elevation angle for satellites to be used in any position solution 3 Click the Send button to accept or the Cancel button to exit 5 2 4 6 Selecting a Power Mask GPS satellites that have a low signal strength are not easily tracked by the GPS Receiver and may result in using signals that are either noisy or have been effected by multipath or other interference source To increase accuracy it may be necessary to MU AEK 037 SN USER S MANUAL PAGE 5 34 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 exclude GPS satellites with a sign
45. open a data source 1 Click the Connect Disconnect button or select Open Data Source from the Action menu MU AEK 037 SN USER S MANUAL PAGE 5 14 JUNE 2000 SENA ISSUE 1 WP ars REVISION 0 2 Click the Connect Disconnect button again or select Open Data Source from the Action menu to disconnect communication to the GPS Receiver 5 2 3 2 Opening a Log File The log file function provides the ability to log selected information from the GPS Receiver to a named file To open a file and select messages to log 1 Click the Log File Settings button or choose Open Log File from the Action menu The Log File Settings window is displayed Log File Settings x Messages Available for Logging Cancel 02 Measured Navigation Measured Tracking recommended Raw Track Data Software Version Clock Status 50 BPS Subframe Data Throughput Error Command Ack Command Nak Visible List if Almanac Ephemeris Raw DGPS Compact Tracking Development 2 Select each message you want to log to a file by clicking on the required message You can select all of the messages at once by clicking the Select All button MU AEK 037 SN USER S MANUAL PAGE 5 15 JUNE 2000 SENA ISSUE 1 GPS REVISION 0 3 Click OK to begin logging the selected messages or Cancel to abort opening a file Each of the available message types and a brief description is provided in Table 5 f Table 5 f Messages than can be logge
46. ot possible due to insufficient satellites a positions will Mode be calculated using the last known velocity Only applies if the GPS Receiver is being used in a dynamic environment The GPS Receiver will only calculate positions using dead reckoning for the period of time specified by the timeout default 30s 3 Click the Send button to accept or the Cancel button to exit 5 2 4 2 Setting the DOP Mask Control This mask enables you to control the position output of the GPS Receiver so that positions computed with a high DOP value are not output When the DOP mask is exceeded the position message status changes to DOP mask exceeded and the position does not update MU AEK 037 SN USER S MANUAL PAGE 5 30 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 To set the DOP mask controls 1 Choose DOP Mask Control from the Navigation menu The DOP Mask Control screen is displayed DOP Mask Control 3 x Mode Pus C Auto PDOP HDOP Cancel Use PDOP only PDOP C Use HDOP only 10 Use GDOP only GDOP 10 Do not use 2 Select the Mode that you want to use Table 5 k DOP Modes Auto PDOP HDOP The PDOP mask will be used if four or more satellites are available If only three satellites are available the HDOP mask will be used Use PDOP only Only the PDOP mask will be used regardless of the number of satellites available Use HDOP only Only the HDOP mask will be used regardless of the number of s
47. pixel to represent in the Meters Per Pixel field 5 Click the Centered Position check box if you want to display the Map View with the current position at the map center 6 Click the Save button to save the changes or Cancel to exit without saving changes 5 2 1 3 To Exit the SiRFdemo Software Select Exit from the Setup pulldown menu This closes SiRFdemo software 5 2 2 The View Menu This section describes the SiRFdemo functions on the View menu f The 12 Channel Signal Level View Screen on page 5 6 The Tracking View Screen on page 5 7 The Map View Screen on page 5 9 8 53 5 The Measured Navigation Message View Screen page 5 11 The Response View Screen on page 5 12 The Error Message View Screen on page 5 12 The Development Data View Screen on page 5 13 The DGPS Status View Screen on page 5 13 View Action asa sa v Signal Level Tracking Map Navigation Response Error Development DGPS Status MU AEK 037 SN USER S MANUAL PAGE 5 5 JUNE 2000 SENA ISSUE 1 GPS REVISION 0 5 2 2 1 The 12 Channel Signal Level View Screen The 12 Channel Signal Level View screen is a combined graphical and text display of satellite tracking Information shown by the Signal Level view includes the satellite number status azimuth elevation C No and last five seconds of measured signal strength To display the 12 Channel Signal Level view scre
48. rhead Elevation 90 C Heading Up True and Measured Position Information Arrowhead represents true direction of travel and velocity where the outer circle represents the velocity entered below and the inner circle is half that Outer circle velocity ms represents the measured direction of travel and position where the outer circle represents the distance entered below and the mner circle ts half that Juter circle position 20 m 2 Select the direction of the tracking orientation that you want to use o North Up True north points to the top of the circle o Heading Up This option can be used when driving Current heading points to the top of the circle 3 Type the Outer circle velocity in m sec Note The settina of the outer circle velocitv means that if the arrow lenath reaches the outer circle of the plot then the outer circle velocity has been reached 4 Click OK to save the changes or Cancel to exit without saving changes 5 2 2 3 The Map View Screen The Map view screen displays a combination of graphical and text based information Positions generated by the Albatros Evaluation Kit are plotted on the Map view screen while other information such as GPS time GPS week position mode current position heading velocity DOP type of position fix and satellites tracked are displayed as text To display the Map view screen MU AEK 037 SN USER S MANUAL PAGE 5 9 JUNE 2000
49. ros GPS receiver The detailed procedure to download a new software release is explained in the section SOFTWARE DOWNLOADING on page 6 2 For more information on SiRFFlash see the online help 5 2 SIRFDEMO SiRFdemo is the GPS Receiver configuration and monitoring software provided with the Albatros Evaluation Kit This software can be used to monitor real time operation of the Albatros Receiver log data for analysis and configure the GPS Receiver operation Before running the software you need to attach the GPS Receiver to your PC which must be connected to a power source You should also have an antenna on the GPS Receiver and position it so the antenna has a clear view of the sky To start the SiRFdemo software either double click on the sirfdemo exe file or if you created a short cut on your desktop double click the SiRFdemo icon The SiRFdemo software has six menus which are described in Table 5 a MU AEK 037 SN USER S MANUAL PAGE 5 1 JUNE 2000 SENA ISSUE 1 GPS REVISION 0 Table 5 a SiRFDemo menus Menu Descipion An The Setup menu lets you configure the data source used by SiRFdemo and configure operating preferences See The Setup Menu on page 5 2 for detailed information about the Setup menu View The View menu lets you display different view windows The available view windows include Signal Level Tracking Map Navigation Response Error Development DGPS Status See The
50. tion menu f Opening a Data Source on page 5 14 Opening a Log File on page 5 15 Pause the Display on page 5 16 Initializing the Data Source on page 5 17 Switching to the NMEA Protocol on page 5 19 Switching to the SiRF Protocol on page 5 21 Sending a Serial Break Command on page 5 21 9 S D D Synchronize Protocol and Baud Rate on page 5 21 MU AEK 037 SN USER S MANUAL PAGE 5 13 JUNE 2000 SENA ISSUE 1 WP ars REVISION 0 Setting the Main Serial Port on page 5 22 Setting the DGPS Serial Port Parameters on page 5 22 Setting the UART Configuration on page 5 23 Uploading an Almanac to the GPS Receiver on page 5 23 Uploading an Ephemeris to the on page 5 24 Switching Operating Mode on page 5 25 9 Setting the TricklePower Parameters on page 5 26 Action Navigation Poll Window v Open Data Source Open Log File Pause Display Initialize Data Source Switch to Protocol Switch to SIRF Protocol Send Serial Break Signal Synchronize Protocol and Baud Rate Set Main Serial Port Set DGPS Serial Port Set UART Configuration Set Almanac Set Ephemeris Switch Operating Mode Set Trickle Power Parameters 5 2 3 1 Opening a Data Source Before any data can be received from or sent to the GPS Receiver a communications channel must be established or a data source must be opened To
51. value in seconds you want to use in the Timeout field A received differential correction will be applied to the solution until either the timeout value is exceeded or a new differential correction is received 4 Click the Send button to accept or the Cancel button to exit MU AEK 037 SN USER S MANUAL PAGE 5 32 JUNE 2000 ISSUE 1 REVISION 0 5 2 4 4 Selecting the DGPS Source The Albatros GPS Receiver has the ability to receive RTCM differential corrections from different sources The DGPS source control is used to select which source will be used to obtain RTCM differential corrections To select the DGPS source 1 Choose DGPS Source from the Navigation menu The DGPS Source screen is displayed DGPS Source 3 C WAAS Channel C External RTCM Data Serial Port B C Internal DGPS Beacon Receiver Auto Scan Iv Frequency Hz 300000 Jv Bit Rate per sec 100 ha 2 Select the Source that you want to use Table 5 m describes each of the available DGPS sources MU AEK 037 SN USER S MANUAL PAGE 5 33 JUNE 2000 f SENA ISSUE 1 GPS REVISION 0 Table 5 m DGPS Sources Option Description The GPS Receiver will not use any of the available DGPS sources External RTCM Data The GPS Receiver will use any RTCM corrections that are input directly through one of the serial ports This is the default Internal DGPS Beacon Receiver The Albatros GPS Receiver does not support this opti
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