XE1610-OEMPVT Receiver Reference Design XE1610-OEMPVT Receiv
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Datasheet XE1610-OEMPVT 2.0/2.2
XE1610-OEMPVT
Receiver Reference Design
XE1610-OEMPVT Receiver Reference Design from XEMICS receiver product features revolutionary FirstGPS architecture. This complete enabled receiver solution provides high position speed accuracy performances well high sensitivity tracking capabilities urban canyon conditions. solution enables small form factor package. XE1610-OEMPVT delivers major advancements performances, accuracy, integration, computing power flexibility. designed simplify embedded system integration process. FirstGPS mixed hardware/software architecture based XE16BB10 advanced channel correlator companion downconverter.
FEATURES
High sensitivity: -143 tracking, superior urban canyon performances Position accuracy: (50%) without (horizontal) Warm Start under seconds (50%) Start under seconds (50%) Ultra power: full power, additional power modes Embedded ARM7TDMI Small form factor cost solution Ready-to-plug solution, fully autonomous solution. Easily integrated into existing systems On-board navigation data, on-board Flash memory back-up output Bidirectional NMEA interface Real Time Clock with separate back-up power supply
APPLICATIONS
Automotive Asset management/tracking Palmtop, Laptop, Location Based Services enabled devices Handheld receivers
REFERENCE
XE1610-OEMPVT 2.0.C Flash option XE1610-OEMPVT 2.2.C 16MB Flash option
Cool Solutions Wireless Connectivity
XEMICS e-mail: info@xemics.com web: www.xemics.com
Datasheet XE1610-OEMPVT 2.0/2.2
Table Contents
GENERAL DESCRIPTION APPLICATIONS FEATURES REFERENCE FIRSTGPS ARCHITECTURE HIGHLIGHTS Industry Leading Performance Power XE1610-OEMPVT Receiver Reference Design Highlights. FUNCTIONAL BLOCK DIAGRAM DESCRIPTION TECHNICAL CHARACTERISTICS. Specifications. Physical Characteristics. Proposed Mechanical Interface 4.3.1 Interface Connector 4.3.2 Data Interface Connector. INTERFACE DEFINITION, PRINCIPLES OPERATION Data Interface Operating Modes NMEA Standard Message Specification 5.3.1 NMEA Standard Sentences. 5.3.2 -Global Positioning System Fixed Data. 5.3.3 GLL-Geographic Position Latitude/Longitude 5.3.4 GSA-GNSS Active Satellites 5.3.5 GSV-GNSS Satellites View 5.3.6 RMC-Recommended Minimum Specific GNSS Data 5.3.7 VTG-Course Over Ground Ground Speed. 5.3.8 ZDA-Time Date NMEA Specific Sentences. 5.4.1 Diagnostic Message. 5.4.2 TF-Quick Test. 5.4.3 Sentence Mask Automatic Output Rate. 5.4.4 Pulse-Per-Second Configuration 5.4.5 Port Configuration 5.4.6 Reset Receiver Start-Stop FirstGPS 5.4.7 Version Information. 5.4.8 Transparent Mode. Data Back-up. Real Time clock Split Search Mode. Hardware Reset System Watchdog DEFAULT SETTINGS Engine Configuration. 6.1.1 Receiver configuration 6.1.2 Filter configuration 6.1.3 Offset configuration. 6.1.4 Application settings APPLICATION INFORMATION Active Antenna. EXHIBIT EXHIBIT
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Datasheet XE1610-OEMPVT 2.0/2.2
FIRSTGPS ARCHITECTURE HIGHLIGHTS
INDUSTRY LEADING PERFORMANCE Builds high performance FirstGPS core Satellite signal tracking engine perform acquisition tracking functions without intervention High sensitivity: -143 tracking, superior urban canyon performances Position accuracy: (50%) without (horizontal) Warm Start under seconds (50%) Start under seconds (50%) Timing output accuracy:
POWER Ultra power integrated circuit design, optimized architectures, 17mA tracking/doing fixes (vers. Flash option) Further power saving thanks different power down modes Power Save section engine turned Stand-by section, engine, clock turned Off, main power supply running Power down section, engine, clock turned Off, main power supply Off, running back-up supply XE1610-OEMPVT RECEIVER REFERENCE DESIGN HIGHLIGHTS Embedded AT91 MCU, ARM7TDMI-based Small form factor cost Ready-to-plug solution, fully autonomous solution. Easily integrated into existing systems High signal acquisition tracking performances On-board navigation data. On-board Flash memory used back-up data such Almanac output On-board supplied separate back-up power supply main supply turned off. Application software customized high volume applications (Flash memory)
FUNCTIONAL BLOCK DIAGRAM
XE1610-OEMPVT APPLICATION MCLKI SCLK BASEBAND PROCESSOR
FILTER FILTER
DOWNCONVERTER
BOARD INTERFACE
FirstGPS SOFTWARE RTOS
Active Antenna
TCXO
XE1610-OEMPVT
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Datasheet XE1610-OEMPVT 2.0/2.2
DESCRIPTION
NAME ON/OFF USPED VRTCBK RESETN ALMRDY STY1 DELPOSN STANDBYN DESCRIPTION Power Signal Ground command line Volts Input Power Supply UART Speed Serial Receive Data, Port NMEA Data Back-up supply Serial Transmit Data, Port NMEA Data Pulse Second timing output Power Signal Ground Manual Reset, Active Almanac full date, output customer specific version N.C. Delete Initial Position N.C. Stand-by (Active Low)
TECHNICAL CHARACTERISTICS
SPECIFICATIONS Min. Typ. code 32/8 1/minute 1/second second seconds (50%) seconds (50%) seconds (50%) -173 NMEA 0183, v3.0 meters (50%) meter nanosec. nanosec. 3.65 3.65 1/second Max.
Receiver Correlators/Channels Update Rate Satellite Reacquisition Time HotStart Warm Start Cold Start Tracking Sensitivity Power Consumption (VCC) Active mode, searching tracking 2.0) 2.2) Power save mode Stand-by mode Power down mode Voltage Supply Back Voltage Supply VRTCBK Output Protocol Position Accuracy Horizontal, DGPS corrected
Timing output accuracy output (rising edge)
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Datasheet XE1610-OEMPVT 2.0/2.2 PHYSICAL CHARACTERISTICS XE1610-OEMPVT demonstrated (approx. 1.0" 1.2" 0.38") module. This design operating temperature range between -40C +85C PROPOSED MECHANICAL INTERFACE
4.3.1 Interface Connector Subminiature HFL. Works with 3.0V active antenna 4.3.2 Data Interface Connector contact board-to-board flat cable connector
INTERFACE DEFINITION, PRINCIPLES OPERATION
DATA INTERFACE This main power supply This power signal ground VRTCBK This back-up supply on-board hardware Real Time Clock I/Os Data Interface related levels. ON/OFF ON/OFF input control whether engine turned OFF. this "high" whenever reset condition occurs turned "high" when operation, then engine turned this "low" whenever reset condition occurs then engine started. this turned "low" when operation then engine turned off. When ON/OFF "low", on/off state superseded with PXEMaRT manufacturer specific NMEA sentence RXA, defined hereafter. This input pull-up resistor. Serial Receive data. This input pull-up resistor. Serial Transmit data USPED Hardware Baudrate selection Serial NMEA data port (lines TXA) asynchronous serial port (UART). Upon reset, USPED input "low" setting this port defined UART parameters Default Parameters Table USPED "high" setting defined #26. This setting modified with PXEMaPT manufacturer specific NMEA sentence defined hereafter. This input pull-up resistor. There flow control UART.
Default Settings section below
output Pulse Second highly accurate timing signal generated on-board baseband processor. signal available only when receiver does position fixes. Otherwise output level "low". After reset condition, setting this port defined Default Parameters Table parameter This setting modified with PXEMaPS manufacturer specific NMEA sentence defined hereafter.
Default Settings section below
second
rising edge signal synchronous with time. RESETN Manual Reset input pin. receiver reset conditions: first, power-on, thanks on-board Power Reset circuitry; external reset when RESETN "low". This input pull-up resistor. ALMRDY When Active mode, this output indicates on-board Almanac status. Upon start whenever Almanac data tested invalid up-to-date output level "low. tested valid up-to-date output level "high". STANDBYN This input sets receiver Stand-by mode when level "low". Otherwise receiver either Active Power Save modes. below, under Operating modes details. This input pull-up resistor.
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Datasheet XE1610-OEMPVT 2.0/2.2 DELPOSN Delete Initial Position pin. When "low", this allows deleting initial position portion triggering re-computation tracking set. position will deleted fixes already being generated. This function useful when initial position known incorrect, example when receiver powered down, plane, flown 20,000 then warm-started. timing information figure below. This input pull-up resistor.
`Delete Initial Position' Request (Delay
DELPOSN default value
Beginning `Delete Initial Position' task
Important Note: after DELPOSN activated, receiver should make position before saves data back-up Flash memory OPERATING MODES receiver main operating modes, summarized table below Mode Description ON/Off Active Mode Power Save Mode Receiver running, doing acquisition, tracking, position fixes receiver functions turned OFF, idle mode, clock running, running receiver functions turned OFF, clock stopped, running receiver functions turned OFF, clock stopped, running Back-up supply Powered Powered High thru NMEA command) thru NMEA command)
STANDBY High High
Current consumption 20mA 2.0)
Stand-by Mode
Powered
<500
Power Down Mode
power
Active
"LP" NMEA valid NMEA ON/OFF "high" ON/OFF "low" STANDBYN "high"
ON/OFF "high"
Power save
STANDBYN "low" STANDBYN "high"
ON/OFF "low"
Stand-by
switched ON/OFF "low"
switched ON/OFF "low"
Power down
Figure Switching between operating modes
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Datasheet XE1610-OEMPVT 2.0/2.2
Notes TTFF start-up condition: When switching from Power Save Stand-by Active mode, start condition will start Almanac valid, Ephemeris valid (less than hours old), approximate position known valid Warm start Almanac valid, Ephemeris valid, approximate position known valid Cold start otherwise When switching from Power Down Stand-by then Active mode, start condition will start Almanac valid, Ephemeris valid (less than hours old), approximate position known valid Warm start Almanac approximate position saved Flash valid, valid Cold start otherwise NMEA STANDARD MESSAGE SPECIFICATION XE1610-OEMPVT supports NMEA-0183. Brief descriptions output messages provided herein. 5.3.1 NMEA Standard Sentences Xemics receivers standard output messages listed Table NMEA Message Description Global positioning system fixed data Geographic position latitude/longitude GNSS active satellites GNSS satellites view Recommended minimum specific GNSS data Course over ground ground speed Time Date
Table NMEA-0183 Messages
After reset condition occurs, defined above, default setting NMEA sentences GGA, GSA, RMC, with update every second. This default setting modified Default Parameters Table (parameters Flash, also overridden with PXEMaNM manufacturer specific sentence defined hereafter. 5.3.2 -Global Positioning System Fixed Data Description: This message reports global positioning system fixed data, shown Table Name Message Position Latitude Indicator Longitude Indicator Position Indicator Satellites Used HDOP Altitude1 Units Geoid Separation1 Units Diff. Corr. Diff. Ref. Station Checksum <CR><LF>
Example $GPGGA 161229.487 3723.2475 12158.3416 0000
Units
Description protocol header hhmmss.sss ddmm.mmmm north south dddmm.mmmm east west xxx0 Range Horizontal Dilution Precision
Meters Meters Meters Meters Second
Null fields when DGPS used message termination
does support geoid corrections. Values WGS-84 ellipsoid heights. Table Data Format
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Datasheet XE1610-OEMPVT 2.0/2.2 Value Description available invalid Mode, valid Differential GPS, Mode, valid Mode, valid
Table Position Indicator
Example: values reported this example interpreted shown Table ,0000*18 5.3.3 GLL-Geographic Position Latitude/Longitude Description: This message reports latitude longitude geographic positioning data, described Table Name Message Latitude Indicator Longitude Indicator Position Status Checksum <CR><LF> Example $GPGLL 3723.2475 12158.3416 161229.487 Description protocol header mm.mmmm north south mm.mmmm east west ss.sss data valid data valid message termination
Table Data Format
Example: values reported this example interpreted shown Table 5.3.4 GSA-GNSS Active Satellites Description: This message reports satellites used navigation solution reported message. described Table Name Message Mode Mode Satellite Used Satellite Used Satellite Used PDOP HDOP VDOP Checksum <CR><LF> Satellite used solution. Example $GPGSA Description protocol header Table Table Channel Channel Channel Position Dilution Precision Horizontal Dilution Precision Vertical Dilution Precision message termination
Table Data Format
Value
Description Manual forced operate mode Automatic allowed automatically switch 2D/3D
Table Mode
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Datasheet XE1610-OEMPVT 2.0/2.2 Value Description available
Table Mode
Example: values reported this example interpreted shown Table ,1.8,1.0,1.5*33 5.3.5 GSV-GNSS Satellites View Description: This message reports satellites view, their numbers, elevation, azimuth, values four satellites message). described Table Name Message Number Messages1 Message Number Satellites View Satellite Elevation Example $GPGSV Units Description protocol header Range Range Channel (Range Channel (Maximum
degrees
Azimuth
degrees
Channel (True, Range 359)
(C/No) dBHz Range null when tracking Satellite Channel (Range Elevation degrees Channel (Maximum Azimuth degrees Channel (True, Range 359) (C/No) dBHz Range null when tracking Checksum <CR><LF> message termination Depending number satellites tracked multiple messages data required.
Table Data Format
Example: values reported this example interpreted shown Table messages required complete data transmission. 5.3.6 RMC-Recommended Minimum Specific GNSS Data Description: This message reports time, date, position, course, speed from receiver's navigation solution. described Table Name Message Position Example $GPRMC 161229.487 Units Description protocol header ss.sss
Status
Latitude Indicator Longitude Indicator Speed Over Ground Course Over Ground Date Magnetic Variation1 Indicator Checksum <CR><LF>
3723.2475 12158.3416 0.13 309.62 120598 02.6
data valid data valid
mm.mmmm north south mm.mmmm east west knots degrees degrees east west message termination
Table Data Format
True
"course over ground" data geodetic WGS84 directions.
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Datasheet XE1610-OEMPVT 2.0/2.2 Example: values reported this example interpreted shown Table 02.6,W*10 5.3.7 VTG-Course Over Ground Ground Speed Description: This message reports current ground course speed data. Course reported relative true north only. message defined Table Name Example Units Message $GPVTG Course 309.62 degrees Reference Course 139.6 degrees Reference Speed 0.13 knots Units Speed km/hr Units Checksum <CR><LF> "course over ground" data geodetic WGS84. Description protocol header Measured heading True Measured heading Magnetic Measured horizontal speed Knots Measured horizontal speed Kilometer hour message termination
Table Data Format
Example: values reported this example interpreted shown Table 5.3.8 ZDA-Time Date Description: This message reports current time date. message defined Table Name Message Hour, Min, Sec, Month Year Local Zone Hours Local Zone Minutes <CR><LF> Example $GPZDA 114523.62 2001 Units Description protocol header hhmmss.ss UTC, month UTC, year local zone hours, hours local zone minutes, message termination
Table Data Format
Example: values reported this example interpreted shown Table
NMEA SPECIFIC SENTENCES NMEA 0183 Standard dictates that proprietary NMEA sentences have following structure: $Paaaxxxxxxxxxxxxx*hh where mnemonic code, case; xxxxxxxxx.- data; sentence checksum types input sentences defined: query set. Query sentences request certain information from receiver. sentences allow configuring receiver with certain configuration parameters forcing receiver perform specific action. each type input sentences, corresponding output response sentence defined. query sentence, response sentence contains requested data. sentence, response sentence contains status action requested sentence. Taking these aspects into account, following general structure specific NMEA sentence: $PXEMmaa,x1,x2,x3,x4,.,xN*hh
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Datasheet XE1610-OEMPVT 2.0/2.2 where sentence type: `query', `set', `response'; proprietary sentence identifier (see below); x1.xN data parameters (only query response sentences); sentence checksum NOTE: Each data parameters must preceded with comma, except sentence identifier, checksum which preceded with checksum delimiter character `*'. QUERY sentence: send query sentence, data fields transmitted. following format used: $PXEMQaa*hh RESPONSE sentence QUERY: query sentence, response sentence with fields transmitted. following format used: $PXEMRaa,x1,x2,x3,x4,.,xN*hh sentence: send sentence, x1.xN must contain valid values. following format used: $PXEMSaa,x1,x2,x3,x4,.,xN*hh RESPONSE sentence SET: sentence, status response sentence transmitted. following format used: $PXEMRaa,s*hh where status requested action: action successful; otherwise. following proprietary NMEA sentence identifiers implemented: 5.4.1 Diagnostic Message This sentence outputs diagnostic string. used report various error conditions. This response-only sentence. $PXEMRDI,ccccccc*hh where ccccccc diagnostic string characters
5.4.2 TF-Quick Test Description: This sentence contains information which helps monitoring station figure status receiver. This sentence automatically output given rate setting NMEA sentence mask (see NMSentence Mask Automatic Output Rate section below). This query-only sentence. Name Message BBFStatus AlmStatus GPSTime SatInView FixSource <CR><LF> Example $PXEMaTF 12367 34.1453 seconds meter Units Description protocol header, query; response) BBFlash status startup valid; invalid) Almanac completion status complete; incomplete) xxxxxx: time week Number satellites Position source (0=no fix; 2=2D fix; 3=3D fix) llll.lllll: Latitude current position (North), (South) yyyyy.yyyyy: Longitude current position (East), (West) xxxxx: Antenna altitude mean-sea-level (MSL geoid) message termination
Table Data Format
Example: $PXEMQTF*6E
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Datasheet XE1610-OEMPVT 2.0/2.2 5.4.3 Sentence Mask Automatic Output Rate This sentence configures application automatically output standard NMEA sentences specified time interval. $PXEMaNM,xxxx,xx*hh Name Message Mask Rate <CR><LF> Example $PXEMaNM 0008 Units Description Proprietary protocol header, a-mode set; response) xxxx Output sentence mask, value (see Notes below) Automatic output sentence rate message termination
Table Data Format
Notes: xxxx hexadecimal value representing 2-byte bit-mask where specific sets clears automatic output particular NMEA sentence according table below. mask derived combining bits which represent NMEA sentences which will automatically output. example, automatically output GGA, GSA, ZDA, RMC, bits 2-byte mask, resulting value 0x131 (0x1+0x10+0x20+0x100). This value sent ASCII string `0131' xxxx field sentence. NMEA
5.4.3.1.1.1.1.1.1 Sentence
xxxx
Bit# Field value
0001 0002 0004 0008 0010 0020 0100 0200
Table Possible MASK field values command
Example: $PXEMSNM,0008,01*6E (set) $PXEMRNM,a*6E (response set: action status: success; failure) 5.4.4 Pulse-Per-Second Configuration This sentence sets pulse-per-second (PPS) output off. This set-only sentence. $PXEMaPS,x*hh Name Message On/Off <CR><LF> Example: $PXEMSPS,1*6E $PXEMRPS,a*6E Example $PXEMaPS Units Description Proprietary protocol header, a-mode set; response0 output switch OFF) message termination
Table Data Format
(set) (response set: action status: success; failure)
5.4.5 Port Configuration This sentence configures application serial port communication parameters. $PXEMaPT,xxxxxx,x,a,x*hh
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Datasheet XE1610-OEMPVT 2.0/2.2 Name Message Baudrate Data length Parity Stop <CR><LF> Example $PXEMaPT 009600 Units Description Proprietary protocol header, a-mode set; response) xxxxxx Baud rate (057600, 038400, 019200, 009600, 004800, 002400) data bits Parity None; Odd; Even) stop bits message termination
Table Data Format
Example: $PXEMSPT,009600,8,N,1*6E (set) $PXEMRPT,a*6E (response set: action status: success; failure) 5.4.6 Reset Receiver Start-Stop FirstGPS This sentence forces receiver perform software reset. also allows starting shutting down FirstGPS library without performing full software reset. This set-only sentence. $PXEMaRT,a*hh Name Message Command Example $PXEMaRT Units Description Proprietary protocol header, a-mode set; response) cold software reset warm software reset software reset start FirstGPS library shut down FirstGPS library enter into serial programming mode (see specific technical note this option) message termination
<CR><LF> Example: $PXEMSRT,W*6E $PXEMRRT,a*6E
Table Data Format
(set) (response set: action status: success; failure)
5.4.7 Version Information This sentence obtains software versions measurement platform (MPM) firmware, FirstGPS API, FirstGPS Library, native RTOS, native processor (CPU). This query-only sentence. Note: complete sentence returns only version particular product component time (either firmware, API, library, RTOS CPU). sentence must include component type which obtain version given query. Name Message Component type Example $PXEMaVR Units Description Proprietary protocol header, a-mode query; response) measurement platform (MPM) firmware FirstGPS FirstGPS Library native RTOS native processor (CPU) Software build variable length field; characters long Major version number Minor version number Beta version number XX/D0308-199
Name version version Beta version
abcdef
Datasheet XE1610-OEMPVT 2.0/2.2 Month Year <CR><LF> 2002 Month release release Year release message termination
Table Data Format
Example: $PXEMQVR,R*6E (query)
(response query)
Geodetic System Configuration This sentence sets geodetic system compute geographic positioning data. Name Message Ellipsoid Delta Delta Delta <CR><LF> Example $PXEMaGS -0.148 0.096 0.122 Units Description Proprietary protocol header, a-mode set; response) Ellipsoid Model (see table below) xxxx.xxxxxx, shift parameter axis yyyy.yyyyyy, shift parameter axis zzzz.zzzzzz, shift parameter axis message termination
Table Data Format
Index
Ellipsoid Name Airy 1830 Australian National South American 1969 Bessel 1841 Ethiopia Bessel 1841 Namibia Clarke 1866 Clarke 1880 Everest Brunei Malaysia Everest India 1830 Everest India 1956 Everest Pakistan Everest Malaysia Singapore 1948 Geodetic Reference System 1980 Helmert 1906 Hough 1960 Indonesian 1974 International 1924 Hayford Krassovsky 1940 Modified Airy Modified Fischer 1960 1972 1984
Semi-Major Axis 6377563.396 6378160 6377397.155 6377483.865 6378206.4 6378249.145 6377298.556 6377276.345 6377301.243 6377309.613 6377304.063 6378137 6378200 6378270 6378160 6378388 6378245 6377340.189 6378155 6378135 6378137
Flattening 299.3249646 298.25 299.1528128 299.1528128 294.9786982 293.465 300.8017 300.8017 300.8017 300.8017 300.8017 298.257222101 298.3 298.247 298.3 299.3249646 298.3 298.26 298.257223563
Table Ellipsoid models
Example: (set) (response set: action status: success; failure) also Exhibit further examples Power Save Mode This sentence sets receiver Power Save mode. back Active mode, users should send valid NMEA sentence receiver. toggle ON/OFF Active Mode NMEA command used switch Power Save mode $PXEMaLP*hh
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Datasheet XE1610-OEMPVT 2.0/2.2 Name Message <CR><LF> Example $PXEMaLP Units Description Proprietary protocol header, a-mode set; response) message termination
Table Data format
Example: $PXEMSLP*4F (set) $PXEMRLP,a*23 (response set: action status: success; failure)
5.4.8 Transparent Mode With this type sentence function call defined Standard Advanced Function Calls documents passed thru NMEA interface. This query, set, response type sentence. $PXEMaTR,c.c,x.xx, x.x*hh Example: $PXEMQTR,SQCS*6E $PXEMRTR,SQCS,NAV_OK,GPS Time Week,Channel status satellite Channel status satellite n*4F (response channel status query) most useful types proprietary NMEA sentences listed below. Exhibit detailed information function calls 5.4.8.1 time purpose time allow almanac data position determine which satellites view allow rough ranging satellites. XE1610-PVT products load time every start-up. local RTC, from which this time loaded, valid possible provide time from another source. accuracy this external source should better than minutes. time/date information system coded using standard time format that week number time week. week number time number weeks from Sunday, January 1980. However, data message format, week number modulo-1024 number (10-bit number). last rollover occurred August 1999. next rollover will happen April 2019. time week number milliseconds since beginning current week, week starting Sundays hour, minute, millisecond. When engine running sentence where: WeekNb week number (see above) TimeOfWeek time week information, milliseconds (see above) Accu reflects accuracy time information provided system. only time week week number valid (accuracy better than minutes), otherwise Important notes: Accu parameter hardware will updated when receiving this command. However, Accu parameter hardware will updated when receiving sentence. Also, strongly advised avoid setting Accu parameter sure about accuracy, this lead improper behavior. 5.4.8.2 initial position purpose rough initial position allow almanac data time determine which satellites view. This achieved sending proprietary command which format where: L.LLL latitude expressed radian O.OOO longitude expressed radian XX/D0308-199
Datasheet XE1610-OEMPVT 2.0/2.2 altitude expressed meter. Note that sure about altitude, default value gives acceptable results most cases. Accu reflects accuracy initial position.
example, position Delhi India (coordinates being lat: 0.499, lon: 1.347), full sentence should initial position only when engine running before system does position fix. Note that initial position error 1,000 will result almanac based satellite search which rotated view approximately 10%. Beyond this, specified performance will degrade. Initial position errors greater than 3,000 will result constellation which almost view. recommendation initial position only accuracy better than 1,200 Important Note: after receiver gets this command content data will saved back-up Flash upon first position fix. 5.4.8.3 Delete initial position This NMEA sentence same effect hardware input DELPOSN. allows deleting initial position portion triggering re-computation tracking set. position will deleted fixes already being generated. This function useful when initial position known incorrect, example when receiver powered down, plane, flown 20,000 then warm-started. command $PXEMSTR,SSDI*74 Important Note: after PXEMSTR,SSDI command sent, receiver should make position before saves data back-up Flash memory
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Datasheet XE1610-OEMPVT 2.0/2.2 DATA BACK-UP almanac data information transmitted each satellite orbits state (health) entire constellation. ephemeris list accurate positions locations celestial objects function time. availability almanac ephemeris data, addition time approximate position, allows receiver rapidly acquire satellites soon turned There possible start conditions when receiver turned Cold Start, that start-up sequence receiver when initialization data available; Warm Start, that start-up sequence receiver when last position, time almanac information available; Start, that start-up sequence receiver when ephemeris, last position, time almanac information available. XE1610-OEMPVT design data structure, including almanac, ephemeris last position fix, copied into specific sector on-board Flash memory, that's back-up Flash sector, BBFlash. data stored first time almanac complete up-to-date, then every minutes, where defined Default Parameters Table parameter #37. Alternatively, Flash programmed with valid information during manufacturing process. This avoid downloading from satellites, which takes approx. 12.5 minutes. Then, long main power supply remains turned data structure kept RAM. However, data maintained main supply switched case power failure). this case, upon power these data uploaded from Flash back-up memory into data RAM. Provided these data valid months Almanac, hours ephemeris TTFF will shorter than Cold Start TTFF, since receiver will Warm start condition.
Default Settings section below
With Flash technology embedded v2.0, takes approx. seconds erase update Flash sectors where data structure stored, while this reduces second v.2.2. REAL TIME CLOCK receiver board hardware Real Time Clock chip that operates independently from function. When receiver active soon time becomes available synchronized with time. Then, long time available, synchronized every seconds. main power supply turned provided VRTCBK supply available, operates keep information date. doing when both main supply receiver turned again time information will available. SPLIT SEARCH MODE This feature useful when initial position incorrect, example when receiver powered down, plane, flown 10,000 then warm-started. user does activate DELPOSN does sent proprietary PXEMSTR,SSDI NMEA command, receiver will start search satellites believes above (warm start condition). However, after approximately minutes, will free some channels search other satellites constellation. When finds will free more channels recover from Warm start with inaccurate initial position. HARDWARE RESET SYSTEM WATCHDOG receiver embedded microcontroller voltage supply supervisor. This device will automatically generate hardware reset voltage supply goes under specified value. this case, receiver will restart from known stable state case power shortage main supply while operation. addition, receiver firmware includes system watchdog reset procedure. Should system exception occurs, receiver will execute software reset restart operation safe mode. this case receiver will have position fixes seconds average.
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Datasheet XE1610-OEMPVT 2.0/2.2
DEFAULT SETTINGS
number system settings stored particular area embedded Flash. That's Default Parameters Table, whose content listed hereafter. Some these settings modified sending proprietary NMEA sentence receiver, defined above. Default parameter Output Enabled NMEA refresh rate NMEA output displ'd NMEA output displ'd NMEA output displ'd NMEA output displ'd NMEA output displ'd NMEA output displ'd NMEA output displ'd NMEA output displ'd NMEA display order NMEA display order NMEA display order NMEA display order NMEA display order NMEA display order NMEA display order NMEA display order Serial Port Baudrate Serial Port Data bits Serial Port Stop bits Serial Port Parity bits Serial Port Baudrate Serial Port Data bits Serial Port Stop bits Serial Port Parity bits Data Type Char Integer Char Char Char Char Char Char Char Char Integer Integer Integer Integer Integer Integer Integer Integer Integer Integer Integer Character Integer Integer Integer Character Integer Real Real Real Real Real Integer Real Real Real bits Integer Default value second 4800 9600 7.9e-6 0.087
10080 Flash option 16MB Flash option
Range values seconds
2400 4800 9600 19200 38400 57600
N/O/E
2400 4800 9600 19200 38400 57600
N/O/E
Land Stationary Automobile
Dynamic Code Oscillator Offset Elevation Mask (radian) Signal Level Mask (AMU) Mask PDOP Switch Geodetic System Ellipsoid Geodetic System Delta Geodetic System Delta Geodetic System Delta BBFlash Update rate (minutes)
Depends Oscillator Pi/2 radian -9999.99999 +9999.99999 -9999.99999 +9999.99999 -9999.99999 +9999.99999 (2**32)-1
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Datasheet XE1610-OEMPVT 2.0/2.2 ENGINE CONFIGURATION addition, there some settings embedded FirstGPS navigation software that cannot modified users 6.1.1 Receiver configuration DGPS DGPS Mode 6.1.2 Filter configuration Kalman Filter 6.1.3 Offset Window 6.1.4 Application settings 1024 offset number 1024 week periods since January 1980. Setting 1024 includes dates between August 1999 March 2019. Offset configuration
Number channels Week epoch
APPLICATION INFORMATION
ACTIVE ANTENNA proper operation, XE1610-OEMPVT receiver should operated with active antenna that following characteristics Power supply voltage Frequency range Gain Antenna total Gain 1,575.42+/-1.023MHz typ. typ.
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Datasheet XE1610-OEMPVT 2.0/2.2
EXHIBIT
following table illustrates datums some cities around world. Country Wales Australia Japan Namibia Cuba Senegal Brunei Thailand India Pakistan Singapore Russia Egypt Marshall Island Indonesia France Somalia Ireland City Cardiff Sydney Tokyo Windhoek Havana Dakar Bandar Bangkok Calcutta Karachi Singapore Moscow Cairo Majuro Djakarta Paris Mogadiscio Dublin NNEA Syntax $PXEMSGS,00,375,-111,431*78 $PXEMSGS,01,-134,-48,149*40 $PXEMSGS,02,-148,507,685*5C $PXEMSGS,03,616,-97,251*60 $PXEMSGS,04,-3,142,183*50 $PXEMSGS,05,-128,-18,224*44 $PXEMSGS,06,-679,669,-48*4C $PXEMSGS,07,210,814,289*7D $PXEMSGS,08,295,736,257*73 $PXEMSGS,09,283,682,231*7B $PXEMSGS,10,-11,851,5*62 $PXEMSGS,11,1.08,0.27,0.9*6C $PXEMSGS,12,-130,110,-13*44 $PXEMSGS,13,102,52,-38*57 $PXEMSGS,14,-24,-15,5*75 $PXEMSGS,15,-87,-96,-120*5D $PXEMSGS,16,-43,-163,45*72 $PXEMSGS,17,506,-122,611*58 WGS-84 Datum 100.0 151° 100.0 139° 100.0 100.0 100.0 100.0 114° 100.0 100° 100.0 100.0 100.0 103° 100.0 100.0 100.0 100.0 106° 100.0 100.0 100.0 100.0 Local Datum 58.454" 55.396" 51.497 5.738" 151° 55.851" 81.918 48.239" 139° 11.591" 59.959 58.644" 3.088" 77.040 58.302" 0.559" 125.109 57.554" 58.140" 66.314 3.033" 114° 49.116" 52.227 54.002" 100° 11.811" 141.421 57.337" 9.571" 122.930 58.714" 59.779" 128.006 0.179" 103° 6.237" 103.999 0.010" 59.865" 99.446 59.415" 53.980" 89.458 6.227" 58.745" -50.775 0.141" 106° 59.111" 84.912 3.271" 4.516" 50.964 58.354" 2.383" 141.943 59.163" 56.468" 47.599 XX/D0308-199
Datasheet XE1610-OEMPVT 2.0/2.2 Singapore Ireland Ireland Singapore Dublin Dublin $PXEMSGS,18,7,-10,26*51 $PXEMSGS,19,0,0,4.5*60 $PXEMSGS,20,0,0,0*75 103° 100.0 100.0 100.0 0.833" 103° 0.142" 93.969 59.906" 0.554" 96.856 100.0
XX/D0308-199
Datasheet XE1610-OEMPVT 2.0/2.2
EXHIBIT
list description parameters $PXEMaTR proprietary NMEA sentence restricted document. It's passed customers request upon approval Xemics.
XEMICS 2003 rights reserved. Reproduction whole part prohibited without prior written consent copyright owner. information presented this document does form part quotation contract, believed accurate reliable changed without notice. liability will accepted publisher consequence use. Publication thereof does convey imply license under patent other industrial intellectual property rights. XEMICS PRODUCTS DESIGNED, INTENDED, AUTHORIZED WARRANTED SUITABLE LIFE-SUPPORT APPLICATIONS, DEVICES SYSTEMS OTHER CRITICAL APPLICATIONS. INCLUSION XEMICS PRODUCTS SUCH APPLICATIONS UNDERSTOOD UNDERTAKEN SOLELY CUSTOMER'S RISK. Should customer purchase XEMICS products such unauthorized application, customer shall indemnify hold Xemics officers, employees, subsidiaries, affiliates, distributors harmless against claims, costs damages attorney fees which could arise. FirstGPS registered trademark Trimble Navigation Limited
XX/D0308-199
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