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RSA-1500L User Manual
RSA-1500L User Manual
Version 1.2
2008/01/24
This document contains information highly confidential to RoyalTek Company
LTD (RoyalTek). It is provided for the sole purpose of the business discussions
between supplier and RoyalTek and is covered under the terms of the
applicable Non-Disclosure Agreements. Disclosure of this information to other
parties is prohibited without the written consent of RoyalTek.
Prepared by RoyalTek Company LTD.
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RSA-1500L User Manual Figure List ................................................................................................................................ II Table List ................................................................................................................................. III 1 Introduction ..................................................................................................................... 4 1.1 Product applications .....................
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RSA-1500L User Manual Figure List Figure 1-1 RSA-1500L Front View......................................................................... 5 Figure 1-2 RSA-1500L Bottom View ..................................................................... 5 Figure 1-3 System Block Diagram ........................................................................ 5 Figure 1-4 Application Circuit Reference............................................................. 8 Figure 1-5 Mechanical Layout.....
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RSA-1500L User Manual Table List Table 1-1 Technical Specifications ....................................................................... 6 Table 1-2 Definition of Pin assignment .............................................................. 10 Table 2-1 NMEA-0183 Output Messages ............................................................ 12 Table 2-2 GGA Data Format................................................................................. 12 Table 2-3 Position Fix Indicators .
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RSA-1500L User Manual 1 Introduction RoyalTek RSA-1500L low power and small form factor board is the newest generation of RoyalTek smart antenna GPS module. The smart antenna GPS module is powered by SiRF Star III technology and RoyalTek proprietary navigation algorithm that providing you more stable navigation data. Parallel design is the major new feature of RSA-1500L. The smallest form factor and parallel design is the best choice to be embedded in a portable device and receiver lik
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RSA-1500L User Manual 1.2 Product Picture RSA-1500L Figure 1-1 RSA-1500L Front View Figure 1-2 RSA-1500L Bottom View 1.3 RSA-1500L System Block Diagram System block diagram description : a. External antenna. b. 4 Mega bits flash memory c. 6 pin I/O pin Figure 1-3 System Block Diagram 5
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RSA-1500L User Manual 1.4 RSA-1500L Technique Specification Table 1-1 Technical Specifications Impedance： ： ： ：50Ω Ω Ω Ω No Function Specification GPS receiver SiRF Star III, GSC3f/LP 1 Chipset (Digital, RF in a single package) 2 Frequency L1 1575.42MHz. 3 Code C.A. Code. 4 Channels 20 parallel 5 Chipset Sensitivity -159dBm. 6 Cold start 35 sec @ open sky 7 Warm start 35 sec @ open sky 8 Hot start 1 sec @ open sky 9 Reacquisition 0.1sec typical 10 Position accuracy 10me
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RSA-1500L User Manual -25 ~ 85℃ 23 Operating temperature 24 Storage temperature -40 ~ 85 ℃ ≦95% 25 Humidity MMCX edge mount Jack Receptacle specification (External Antenna) Impedance 50ohm Frequency range 0~6GHz V.S.W.R 1.2max Working voltage 175Vrms max Durability 500 mating External Antenna spec. 2.85V±2% DC supply DC current 20mA max. ≦-10dB Input return Loss Output return Loss ≦-10dB 25 dB typical Gain 7
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RSA-1500L User Manual 1.5 Application Circuit Figure 1-4 Application Circuit Reference Note: (1) Ground Planes: This pin2 should be connect to ground. (2) Serial Interface: (Ⅰ) The TXA pin is recommended to connect to serial resistance(220Ω) and pull up (10KΩ). It can increase the stability of serial data. (Default NMEA) (Ⅱ) The RXA pin is recommended to connect to serial resistance(220Ω) and pull up (10KΩ). It can increase the stability of serial data. (Default NMEA) (3)
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RSA-1500L User Manual (4) Power: Connect VCC pin to DC 3.3V. The power supply must add bypass capacitor(10uF and 1uF).It can reduce the Noise from power supply and increase power stability. (5) GPIO: The GPIOs function are for customer used. If no use GPIO function, it don’t connect anything. 1.6 Mechanical Layout Figure 1-5 Mechanical Layout 9
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RSA-1500L User Manual 1.7 Hardware interface Figure 1-6 Hardware Interface Table 1-2 Definition of Pin assignment Pin Defined Pin Signal Name I/O Description Characteristics 1 VCC I DC Supply DC +3.3V±5% Voltage input 2 GND G Ground Reference Ground 3 TXA O Serial port A 2.85V ≥ V ≥ 2.38V V ≤ 0.7V OH OL 4 RXA I Serial port A 3.15V ≥ V ≥ 2.0V - 0.3V≤ V ≤ 0.86V IH IL 5 GPIO-1 I/O General 3.15V ≥ V ≥ 2.0V - 0.3V≤ V ≤ 0.86V IH IL purpose I/O 2.85
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RSA-1500L User Manual Definition of Pin assignment VCC(+3.3V DC power Input) This is the DC power supply input pin for GPS system. It provides voltage to module. GND GND provides the reference ground. TXA This is the main transmitting channel and is used to output navigation and measurement data to SiRFdemo or user written software RXA This is the main receiver channel and is used to receive software commands to the board from SIRFdemo software or from user written software. VB
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RSA-1500L User Manual 2 Software Interface 2.1 NMEA V3.0 Protocol Its output signal level is TTL: 4800 bps (default), 8 bit data, 1 stop bit and no parity. It supports the following NMEA-0183 Messages: GGA, GLL, GSA, GSV, RMC and VTG. NMEA Output Messages: the Engine board outputs the following messages as shown in Table 2-1: Table 2-1 NMEA-0183 Output Messages NMEA Record Description GGA Global positioning system fixed data GLL Geographic position – latitude / longitude GSA
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RSA-1500L User Manual Geoid Separation meters Units M meters Age of Diff. Corr. second Null fields when DGPS is not used Diff. Ref. Station ID 0000 Checksum *18 ＜CR＞＜LF＞ End of message termination Table 2-3 Position Fix Indicators Value Description 0 Fix not available or invalid 1 GPS SPS Mode, fix valid 2 Differential GPS, SPS Mode, fix valid 3-5 Not Supported GPS PPS Mode, fix valid 6 Dead Reckoning Mode, fix valid 2.1.2 GLL-Geographic Position –Latitude/Longi
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RSA-1500L User Manual 2.1.3 GSA-GNSS DOP and Active Satellites Table 2-5 contains the values of the following example: $GPGSA, A, 3, 07, 02, 26, 27, 09, 04, 15, , , , , , 1.8,1.0,1.5*33 Table 2-5 GSA Data Format Name Example Units Description Message ID $GPGSA GSA protocol header Mode 1 A See Table 4-2 Mode 2 3 See Table 4-1 Satellite Used 07 Sv on Channel 1 Satellite Used 02 Sv on Channel 2 …. …. Satellite Used Sv on Channel 12 PDOP 1.8 Position Dilution of Precisio
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RSA-1500L User Manual Table 2-8 GSV Data Format Name Example Units Description Message ID $GPGSV GSV protocol header Number of 2 Range 1 to 3 1 Messages 1 Messages Number 1 Range 1 to 3 Satellites in View 07 Satellite ID 07 Channel 1(Range 1 to 32) Elevation 79 degrees Channel 1(Maximum 90) Azimuth 048 degrees Channel 1(True, Range 0 to 359) SNR (C/No) 42 dBHz Range 0 to 99, null when not tracking …. …. Satellite ID 27 Channel 4(Range 1 to 32) Elevation 27 degrees Cha
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RSA-1500L User Manual Course Over 309.62 degrees True Ground Date 120598 ddmmyy Magnetic Variation degrees E=east or W=west Mode A A=Autonomous, D=DGPS, E=DR Checksum *10 2.1.6 VTG-Course Over Ground and Ground Speed Table 2-10 contains the values of the following example: $GPVTG, 309.62, T, , M, 0.13, N, 0.2, K*6E Table 2-10 VTG Data Format Name Example Units Description Message ID $GPVTG VTG protocol header Course 309.62 degrees Measured heading Reference T True
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RSA-1500L User Manual 3 Package A. . 3.1 Package Specification Shipment Method: PE Bag Figure 3-1 Package Specifications 4 Contact Information Section C ontact: sales@royaltek.com H eadquarter: 1071, Chung Cheng Rd., Suite 9F-1,Tao Yuan City, Taiwan Tel: 886-3-3569666 Fax: 886-3-3580050 W eb Site: http://www.royaltek.com W eb Site Customer Service: http://www.royaltek.com/contact 5 Revision History Title RSA-1500L GPS Module Doc Type User Manual Rev
