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Rikaline

GPS-20

GPS Engine Board

SiRF Star II

V1.0 Aug 09, 2002

User’s Guide

Rikaline

Marketing Corp.

5F-1, 125, RooseveltRd., Sec. 5, Taipei 116, Taiwan, R.O.C.

Phone: +886-2-2934-5456 Fax: +886-2-2934-4373

E-Mail:

[email protected]

Web: www.rikaline.com.tw

All Right Reserved

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Summary of Contents for GPS-20

Page 1: ...SiRF Star II V1 0 Aug 09 2002 User s Guide Rikaline Marketing Corp 5F 1 125 RooseveltRd Sec 5 Taipei 116 Taiwan R O C Phone 886 2 2934 5456 Fax 886 2 2934 4373 E Mail info rikaline com tw Web www rik...

Page 2: ...ions 3 2 Operational Characteristics 5 2 1 Initialization 5 2 2 Navigation 5 3 Hardware Interface 6 3 1 Connector 6 3 2 Pin Assignment 6 3 3 Trickle Power Description 8 3 4 Push to Fix Description 9 3...

Page 3: ...provides a host of features that make it easy for integration and use 1 SiRF Star II chipset with embedded ARM7TDMI CPU available for customized applications in firmware 2 High performance receiver t...

Page 4: ...tart 45 sec averaged 1 3 4 2 Position Aaccuracy Non Differential GPS Position 5 25 meter CEP without SA Velocity 0 1 meters second without SA Time 1 microsecond synchronized GPS time 1 3 4 3 DGPS Accu...

Page 5: ...nificant inaccuracy exists in the initial data or the orbital data is obsolete it may take more time to achieve a navigation solution The GPS 20 Auto locate feature is capable of automatically determi...

Page 6: ...t functions note 1 8 GPIOC SW dependent functions note 1 9 GPIOD SW dependent functions note 1 10 GND Ground 11 TXA Serial Data Output A 12 RXA Serial Data Input A 13 GND Ground 14 TXB Serial Data Out...

Page 7: ...tor software You can directly communicate with a PC serial port TTL level should be turned to RS 232 level 3 2 6 RXA This is the main receiving channel and is used to receive software commands to the...

Page 8: ...is achieved by powering down the board after a position is determined in such a manner that when it is turned back on it can recomputed a position fix in the shortest amount of time Standard TrickleP...

Page 9: ...current of the GSP2e and CPU There are three events that can happen which effectively return the CPU to normal operation 3 4 3 Power on If power is removed then re applied to the board a reset signal...

Page 10: ...al Drawing 3 6 1 Top View 3 6 2 Lateral View 3 6 3 Connector l 886 2 2934 5456 Fax 886 2 2934 4373 Model GPS9540 10 00 5 00 4 00 1 0 0 0 80 0 8 0 5 70 5 7 0 Straight MCX 5F 1 125 Roosevelt Road Sec 5...

Page 11: ...S data GPVTG Course over ground and ground speed 4 1 1 Global Positioning System Fix Data GGA Table 5 2 contains the values for the following example GPGGA 161229 487 3723 2475 N 12158 3416 W 1 07 1 0...

Page 12: ...age termination 4 1 3 GNSS DOP and Active Satellites GSA Table 4 5 contains the values for the following example GPGSA A 3 07 02 26 27 09 04 15 1 8 1 0 1 5 33 Table 4 5 GSA Data Format Name Example Un...

Page 13: ...E Items 4 5 6 and 7 repeat for each satellite in view to a maximum of four 4 satellites per sentence Additional satellites in view information must be sent in subsequent sentences These fields will be...

Page 14: ...Kilometers per hour Checksum 6E CR LF End of message termination 1 SiRF Technology Inc does not support magnetic declination All course over ground data are geodetic WGS84 directions 4 2 RTCM Receive...

Page 15: ...ropean 1950 Eastern Regional Mean International Data16 dat 22 European 1950 Egypt International Data17 dat 23 European 1950 Finland Norway International Data18 dat 24 European 1950 Greece Internationa...

Page 16: ...pore Modified Fischer 1960 Data51 dat 62 South Africa Clarke 1880 Data52 dat 63 Thailand 1975 Everest 1830 Data54 dat 64 Tokyo_Japan Bessel 1841 Data60 dat 65 Tokyo_Korea Bessel 1841 Data61 dat 66 Tok...

Page 17: ...No backup battery 6 2 Accessories A 10302 Active Antenna 2 Meter MCX straight connector A 10302 A Active Antenna 2 Meter MCX 90 connector A 10305 Active Antenna 5 Meter MCX straight connector A 10305...

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