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GPS Engine Board
EB-230
EB-230 is an ultra miniature 12 x 12 mm2 GPS engine board. It provides superior navigation performance under dynamic conditions in areas with limited sky view like urban canyons. High sensitivity up to -158dBm for weak signal operation without compromising accuracy. EB-230 is your best choice for embedded applications. Key Features : * Small form factor: 12 x 12 x 3 mm * Lead-Free - RoHS/WEEE compliant * High sensitivity -158dBm * Tracks 32-Channel of satellites * Fast Position Fix * Low power consumption
EB-230 Data Sheet
Applications : * Handheld devices * Automotive and Marine Navigation * Automotive Navigator Tracking * Emergency Locator * Geographic Surveying * Personal Positioning * Sporting and Recreation * Embedded applications : PDA, DSC, Smart phone, UMPC, PND, MP4
PIN Definition : PIN Coordinates Pin # X Y Pin # 1 0.00 0.00 10 2 0.00 1.27 11 3 0.00 2.54 12 4 0.00 3.81 13 5 0.00 5.08 14 6 0.00 6.35 15 7 0.00 7.62 16 8 4.06 10.06 17 9 9.71 10.06 18
Unit:mm
X 12.50 12.50 12.50 12.50 12.50 12.50 12.50 9.71 2.79
Y 7.62 6.35 5.08 3.81 2.54 1.27 0.00 -2.44 -2.44
TRANSYSTEM INC.
Ultimate EB
Ver 1.2
An A+ supplier of RF microwave & GPS products 1
EB-230 Data Sheet
EB-230 Specifications
Specification General Sensitivity Update Rate Accuracy Description L1 frequcney, C/A code (SPS) 32 independent tracking channels -158dBm /Tracking; -146dBm /Acquisition Up to 5Hz Without aid: 3.0m 2D-RMS <3m CEP (50%) without SA (horizontal) DGPS (WAAS, EGNOS, MSAS, RTCM): 2.5m Cold Start: 36sec Warm Start: 33sec Hot Start: 1sec < 1sec Altitude: 18000m (max.) Velocity: 515m/sec (max.) Vibration: 4G (max.) DC 3.0V < 30mA @ 3.0V (w/o Active ANT) / Tracking DC 1.2V ( RTC Vcc ) NMEA0183 v3.1 baud rate 4800/9600/.../57600, default 9600 Protocol: 3V CMOS/TTL Selectable Output: GGA, GLL, GSA, GSV, RMC, and VTG Default WGS-84 External Active Antenna Output Voltage: 3.0 VDC RS-232, SPI -30 to 85 -40 to 125 95%, non condensing SMT Type, 18 Pin 12 x 12 x 3(H) mm
*Specifications subject to change without prior notice. (c) TRANSYSTEM INC. all rights reserved.
No.1-2 Li-Hsin Rd.I, Science-Based Industrial Park, Taiwan, R.O.C. T: +886-3-5780393 / F: +886-3-5784111 gps.sales@transystem.com.tw www.transystem.com.tw
Acquisition (open sky) Reacquisition Dynamics Supply Voltage Power Consumption Backup Battery NMEA Message Datum Antenna Serial Interface Operating Temperature Storage Temperature Operating Humidity Mounting Dimension
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EB-230 Data Sheet
Table of Contents
1 Introduction ............................................................................................... 4 1.1 Key Features ................................................................................... 4 1.2 Applications ..................................................................................... 4 1.3 Look & Feel ..................................................................................... 4 Technical Description ................................................................................ 5 2.1 Block Diagram ................................................................................. 5 2.2 Pin Definition ................................................................................... 5 2.3 Specification .................................................................................... 6 User Interface ........................................................................................... 7 3.1 Protocol ........................................................................................... 7 3.1.1 NMEA Protocol ....................................................................... 7 3.1.2 MTK NMEA Packet Format .................................................... 8 3.1.3 MTK NMEA Packet Protocol .................................................. 8 3.1.4 MTK NMEA Packet List .......................................................... 8 Dimension and Package ......................................................................... 13 4.1 Mechanical Dimension .................................................................. 13 4.2 Recommend Layout Pattern .......................................................... 13 4.3 Package......................................................................................... 13 Application Information ........................................................................... 14 5.1 GPS Antenna Recommendations .................................................. 14 5.2 Application Circuit.......................................................................... 14 5.3 General GPS Receiver User's Tips ............................................... 15
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EB-230 Data Sheet
1 Introduction
EB-230 is an ultra miniature 12 x12mm2 GPS engine board. It provides superior navigation performance under dynamic conditions in areas with limited sky view like urban canyons. High sensitivity up to -158dBm for weak signal operation without compromising accuracy. EB-230 is your best choice for embedded applications.
1.1 Key Features
* * * * * Small form factor: 12 x 12 x 3 mm Lead-Free - RoHS/WEEE compliant High sensitivity -158dBm Tracks 32-Channel of satellites Fast Position Fix, 36/ 33/ 1s for Cold/ Warm/ Hot start * Low power consumption
1.2 Applications
* * * * * * * Handheld devices Automotive and Marine Navigation Automotive Navigator Tracking Emergency Locator Geographic Surveying Personal Positioning Sporting and Recreation * Embedded applications such as: PDA, DSC, Smart phone, UMPC, PND, MP4
1.3 Look & Feel
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EB-230 Data Sheet
2 Technical Description 2.1 Block Diagram
2.2 Pin Definition
Pin# 1 2 3 4 Signal Name Type I P P O Description
RF Input GND V30D GPS status/ GPIO0 5 1PPS 6 TXD 7 RXD 8 GND 9 GND 10 GPIO6/SO 11 GPIO4/SCS1 12 GPIO5/SCS0 13 GPIO7/SIN 14 GPIO8/SCK 15 V12RTC 16 V30A 17 GND 18 GND P: Power I: Input
Antenna port, L1, 1575.42MHz, 50 ohm Ground Digital power supply, 3.0V10% GPS status, blink when GPS has position fix General input/ output O 1Hz pulse 10% duty cycle when GPS has position fix O 3V CMOS level, data output from EB-230 I 3V CMOS level, data into EB-230 P Ground P Ground I/O* General input/ output, SPI data output I/O* General input/ output, SPI chip select 1 I/O* General input/ output, SPI chip select 0 I/O* General input/ output, SPI data input I/O* General input/ output, SPI clock P RTC power 1.0~1.5Vdc, 500uA max P Analog power supply, 3.0V10% P Ground P Ground O: Output I/O*: Input or Output, Open if not used
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EB-230 Data Sheet
2.3 Specification
General GPS technology Frequency C/A Code Channels Sensitivity Receiver Accuracy Position Velocity Time Datum Datum Time to First Fix Hot start Warm start Cold start Reacquisition Protocol GPS Output Data Update Rate 1PPS Limitations Acceleration Limit Altitude Limit Velocity Limit Jerk Limit Power Operation Current DC Input Range Physical Dimension Temperature Operating Storage Humidity Antenna Impedance Protection Output Voltage Mounting SMT Type 50 Build-in Short circuit and Over current protection 3.0VDC 18Pin 6 Ver 1.2 -30 ~ +85 -40 ~ +125 5% to 95% non-condensing 12 x 12 x 3mm WGS84(Default) total 219 datums 1 sec, average 33 sec, average 36 sec, average <1sec NMEA 0183 (V3.01) - GGA, GLL ,GSA, GSV, RMC, VTG Baud rate 9600 bps, Data bit: 8, Stop bit: 1 (default) 1HZ(default) Enable (1Hz pulse 10% duty cycle) <4G <18,000 meters <515 meters/sec. 20 m/sec. Acquisition: 55 mA Tracking: <30 mA (w/o Active ANT) VCC 3.0Vdc 10% VBAT 1.0~1.5Vdc MTK GPS chipset L1, 1575.42 MHz 1.023 MHz chip rate 32 channels all in view tracking Better than -158dBm Without aid: 3.0 m 2D-RMS DGPS (WAAS, EGNOS, MSAS, RTCM): 2.5 m Without aid: 0.1 m/s 100 ns RMS
EB-230 Data Sheet
3 User Interface
EB-230 provides 2- wire digital UART port for communication of GPS position data using NMEA protocol or MTK extension protocol. UART port is capable of 4800 to 115200 baud rate. Additional 5-pin SPI port is provided for connection with external sensors such as compass, gyro...etc. SPI port share same pin location with general purpose input / output pins (pin #10 ~14).
3.1 Protocol
EB-230 is default to support standard NMEA-0183 protocol. In addition, a series of MTK extensions (PMTK messages) have been developed that can be used to provide extended capabilities common to many applications. To achieve optimal compatibility it is intended to implement 100% compatible operating modes to existing protocols since these protocols are largely symmetrical and designed to provide a bi-directional exchange of data between GPS equipments. 3.1.1 NMEA Protocol EB-230 is capable of supporting following NMEA formats: NMEA Prefix $GPGGA $GPGLL $GPGSA $GPGSV $GPRMC $GPVTG $GPZDA Format GPS fix data Geographic position Latitude / Longitude GNSS DOP and active satellites Satellites in view Recommended minimum specific GNSS data Velocity and track over ground Date and time Direction Out Out Out Out Out Out Out
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EB-230 Data Sheet
3.1.2 MTK NMEA Packet Format Preamble TalkerID PktType DataField * CHK1 CHK2 CR LF
Maximum packet length is restricted to 255 bytes. Field Preamble TalkerID PktType DataField * CHK1, CHK2 CR, LF Length 1 byte 4 byte 3 byte Variable 1 byte 2 byte 2 byte Character Character string Binary data Type Character Character string Character string Description "$" "PMTK" From "000" to "999", an identifier used to tell the decoder how to decode the packet A "," must be inserted before each data filed to help decoder process the DataField The star symbol is used to mark the end of DataField Checksum of the data between preamble "," and "*" Used to identify the end of a packet
Sample Packet: $PMTK000*32 3.1.3 MTK NMEA Packet Protocol In order to inform the sender whether the receiver has received the packet, an acknowledge packet PMTK_ACK should return after the receiver receives a packet. 3.1.4 MTK NMEA Packet List Pkt Type 000 001 Abbreviation / Syntax
PMTK_TEST PMTK_ACK PMTK001,Cmd,Flag None Cmd: Command / packet type the acknowledge responds Flag: 0 = Invalid command / packet 1 = Unsupported command / packet type 2 = Valid command / packet, but action failed 3 = Valid command / packet, and action succeeded Msg: System message. 0 : Unknown 1: Startup
Data Field
Meaning / Example / Return
Test Packet $PMTK000*32 Acknowledge of PMTK command $PMTK001,604,3*32
010
PMTK_SYS_MSG PMTK001,Msg
Output system message $PMTK010,001*2E
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EB-230 Data Sheet
Pkt Type 101 102 103 Abbreviation / Syntax
PMTK_CMD_HOT_START PMTK_CMD_WARM_STA RT PMTK_CMD_COLD_STAR T PMTK_CMD_FULL_COLD _START None None None
Data Field
Meaning / Example / Return
Hot Restart: Use all available data in the NV storage $PMTK101*32 Warm Restart: Don't use Ephemeris at re-start $PMTK102*31 Cold Restart: Don't use Time, Position, Almanacs and Ephemeris data at restart $PMTK103*30 Essentially a Cold Restart, but additionally clear system/user configurations at re-start. Reset the receiver to factory default $PMTK104*37 Set NMEA port baud rate $PMTK251,38400*27
104
None
251
PMTK_SET_NMEA_BAUD RATE PMTK251,Baudrate PMTK_API_SET_FIX_CTL PMTK300,FixInterval,0,0,0 ,0 PMTK_API_SET_DGPS_M ODE PMTK301,Mode PMTK_API_SET_SBAS_E NABLED PMTK_API_SET_NMEA_O UTPUT PMTK_API_SET_PWR_SA V_MODE PMTK320,Mode ( Internal testing ONLY ) PMTK_API_SET_DATUM PMTK330,Datum PMTK_API_SET_DATUM_ ADVANCE PMTK331,majA,ecc,dX,dY ,dZ
300 301
313 314 320
Baudrate: Baud rate setting 0 - default setting, 4800, 9600, 14400, 19200, 38400, 57600, 115200 FixInterval: Position fix interval [msec]. Must be larger than 200 Mode: DGPS data source mode. 0 : No DGPS source 1 : RTCM 2 : WAAS 0 = Disable 1 = Enable See below note 1 Mode: 0: power saving mode off 1: power saving mode on Datum: 0 : WGS84 1 : TOKYO-M 2 : TOKYO-A majA: User defined datum semi-major axis [m] ecc: User defined datumeccentric [m] dX: User defined datum to WGS84 X axis offset [m] dY: User defined datum to WGS84 X axis offset [m] dZ: User defined datum to WGS84 X axis offset [m]
This parameter controls the rate of position fixing activity $PMTK300,1000,0,0,0,0*1C DGPS correction data source mode $PMTK301,1*2D
Enable to search a SBAS satellite or not $PMTK313,1*2E Set NMEA sentence output frequency $PMTK314,1,1,1,1,1,5,1,1,1,1,1,1,0,1,1 ,1,1,1,1*2C Set power saving operation mode $PMTK320,0*26 Set default datum $PMTK330,0*2E Set user defined datum $PMTK331, 6377397.155, 299.1528128, -148.0, 507.0,685.0*16
330
331
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EB-230 Data Sheet
Pkt Type 390 Abbreviation / Syntax
PMTK_API_SET_USER_O PTION PMTK390, Lock, Update_Rate, Baud_Rate, GLL_Period, RMC_Period, VTG_Period, GSA_Period, GSV_Period, GGA_Period, ZDA_Period, MCHN_Period PMTK_API_Q_FIX_CTL PMTK_API_Q_DGPS_MO DE PMTK_API_Q_SBAS_ENA BLED PMTK_API_Q_NMEA_OUT PUT PMTK_API_Q_PWR_SAV_ MOD ( Internal testing ONLY ) PMTK_API_Q_DATUM PMTK_API_Q_DATUM_AD VANCE PMTK_API_GET_USER_O PTION
Data Field
Lock: nonzero: freeze the setting; 0: allow further setting Update_Rate: 1~5 (Hz) Baud_Rate: 115200, 57600, 38400, 19200, 14400, 9600, 4800 XXX_Period: NMEA sentence output period None None None None
Meaning / Example / Return
Write the user setting to the flash to override the default setting. Maximum 8 times without erase the chip. This feature may not be available $PMTK390,1,1,38400,1,1,1,1,1,1,1,0*2 B
400 401 413 414
420 430 431 490
None None None None
500 501
PMTK_DT_FIX_CTL PMTK_DT_DGPS_MODE
FixInterval: Position fix interval in msec [ >= 200] Mode: DGPS data source mode 0 : No DGPS source 1 : RTCM 2 : WAAS 0 = Disable 1 = Enable Total 19 data fields that present output frequency for the 19 supported NMEA sentences. Refer to packet type 314 for supported NMEA sentences and frequency
API_Query_Fix_Ctl $PMTK400*36 PMTK_DT_FIX_CTL API_Query_Dgps_Mode $PMTK401*37 PMTK_DT_DGPS_MODE API_Query_Sbas_Enabled $PMTK413*34 PMTK_DT_SBAS_ENABLED Query current NMEA sentence output frequencies $PMTK414*33 PMTK_DT_NMEA_OUTPUT Query power saving operation mode $PMTK420*3F PMTK_DT_PWR_SAV_MODE Query default datum $PMTK430*35 PMTK_DT_DATUM Query user defined datum $PMTK431*34 PMTK_DT_DATUM Returns current user setting from flash memory. Refer to packet type 590 for detail $PMTK490*33 PMTK_DT_FLASH_USER_OPTION These parameters control the rate of position fixing activity $PMTK500,1000,0,0,0,0*1A DGPS Data Source Mode $PMTK501,1*2B
513 514
PMTK_DT_SBAS_ENABLE D PMTK_DT_NMEA_OUTPU T
Enable to search a SBAS satellite or not $PMTK513,1*28 NMEA sentence output frequency setting $PMTK514,1,1,1,1,1,5,1,1,1,1,1,1,0,1,1 ,1,1,1,1*2A
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EB-230 Data Sheet
Pkt Type 520 Abbreviation / Syntax
PMTK_DT_PWR_SAV_MO DE PMTK520,Mode ( Internal testing ONLY ) PMTK_DT_DATUM PMTK530,Datum PMTK_DT_FLASH_USER_ OPTION
Data Field
0: power saving mode off 1: power saving mode on 0 : WGS84 1 : TOKYO-M 2 : TOKYO-A There are totally 11 data fields that present the followings: 1: Available number of times for recording the user setting. 2: Update_Rate: 1~5 3: Baud_Rate: in bps 4~11: NMEA sentence output period (GLL, RMC, VTG, GSA, GSV, GGA, ZDA, MCHN) 12: Datum 13: DGPS mode: 0 (disable), 1 (RTCM), 2 (SBAS) 14: RTCM baud rate in bps None None Vrsn: MainVersion _ReleaseNumber ReleaseStr: Firmware release name & version ModelID: Model ID
Meaning / Example / Return
Power saving operation mode $PMTK520,0*24 Current datum used $PMTK530,0*28 The user setting in the flash memory $PMTK590,0,1,9600,1,1,0,1,5,1,0,0,0,2 ,9600*2A
530 590
604 605 704 705
PMTK_Q_VERSION PMTK_Q_RELEASE PMTK_DT_VERSION PMTK704,FWVrsn1,FWVr sn2, FWVrsn3 PMTK_DT_RELEASE PMTK705,ReleaseStr,Mod eID
Query FW version $PMTK604*6D PMTK_DT_VERSION Query FW release information $PMTK605*31 PMTK_DT_RELEASE Version information of FW $PMTK704,1.881_06,0606_m0138,000 0*52 Firmware release information $PMTK705,Mcore_1.3,0000*15< LF>
Note 1:
Total 19 data fields representing output frequency for each of the 19 supported NMEA sentences. 0 NMEA_SEN_GLL, // GPGLL interval - Geographic Position - Latitude longitude 1 NMEA_SEN_RMC, // GPRMC interval - Recommended Min. specific GNSS sentence 2 NMEA_SEN_VTG, // GPVTG interval - Course Over Ground and Ground Speed 3 NMEA_SEN_GGA, // GPGGA interval - GPS Fix Data 4 NMEA_SEN_GSA, // GPGSA interval - GNSS DOPS and Active Satellites 5 NMEA_SEN_GSV, // GPGSV interval - GNSS Satellites in View 6 NMEA_SEN_GRS, // GPGRS interval - GNSS Range Residuals 7 NMEA_SEN_GST, // GPGST interval - GNSS Pseudorange Error Statistics 13 NMEA_SEN_MALM, // PMTKALM interval - GPS almanac information 14 NMEA_SEN_MEPH, // PMTKEPH interval - GPS ephemeris information 15 NMEA_SEN_MDGP, // PMTKDGP interval - GPS differential correction information 16 NMEA_SEN_MDBG, // PMTKDBG interval - MTK debug information 17 NMEA_SEN_ZDA, // GPZDA interval - Time & Date 18 NMEA_SEN_MCHN, // PMTKCHN interval - GPS channel status Support Frequency Setting : 0 - Disabled or not supported sentence 1 - Output once every one position fix
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EB-230 Data Sheet
2 - Output once every two position fixes 3 - Output once every three position fixes 4 - Output once every four position fixes 5 - Output once every five position fixes This command set GLL output frequency to be outputting once every 1 position fix, and RMC to be outputting once every 1 position fix, and so on. You can also restore the system default setting via issue: $PMTK314,-1*04
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EB-230 Data Sheet
4 Dimension and Package 4.1 Mechanical Dimension
4.2 Recommend Layout Pattern
4.3 Package
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EB-230 Data Sheet
5 Application Information 5.1 GPS Antenna Recommendations
Follow below recommendations when choosing GPS antenna for EB-230 for best system performance. Transystem also offers active antenna products for optimal performance with EB-230. For details, please contact your Transystem sales contact directly. * * * * * * Use active antenna that works with 3V power supply Receiving frequency 1575.42 1.032MHz Polarization RHCP (right hand circular polarized) Output impedance = 50 Ohm 15dB LNA Gain 20dB Noise figure 2.0dB * Connector: surface mounted on main PCB, Ipex or MMCX
5.2 Application Circuit
Note1: GPS Status (pin#4) can be used as GPS position fix indicator. Note2: V12RTC (pin#15) could connect to 1.0 ~1.5Vdc power supply directly. Note3: Separate V30D (pin#3) from V30A (pin#16) for optimal performance.
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EB-230 Data Sheet
5.3 General GPS Receiver User's Tips
* If the satellite signals can not be locked or experiencing receiving problem (while in urban area), following steps are suggested: a) Please plug the external active antenna into GPS receiver and put the antenna outdoor or on the roof of the vehicle for better receiving performance. b) Move to another open space or reposition GPS receiver toward the direction with least blockage. c) Move the GPS receiver away from the interference sources. d) Wait until the weather condition is improved. Some vehicles having heavy metallic sun protecting coating on windshields may affect signal receptions Driving in and around high buildings may affect signal reception. Driving under tunnels or in buildings may affect signal reception. In general, GPS receiver performs best in open space where it can see clean sky. Weather will affect GPS reception - rain & snow contribute to worsen sensitivity. When GPS receiver is moving, it will take longer time to get position fix. Wait for satellite signals to be locked at a fixed point when first power-on the GPS receiver to ensure quick GPS position fix.
* * * * *
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EB-230 Data Sheet
Contact Information Transystem Inc.
No. 1-2 Li-Hsin Rd. I, Science-Based Industrial Park, Hsinchu, Taiwan, R.O.C. T : +886.3.578.0393 F : +886.3.578.4111 www.transystem.com.tw gps.sales@transystem.com.tw
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