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G-Mouse GPS User Manual
G-Mouse GPS User Manual
GPS GGM308
GPS GGM308
P PS S- -2 2 C Co on nn ne ec ct to or r
Version 1.01 2004 / 09 / 16
i Copyright is reserved by Altina
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INDEX 1 OVERVIEW ...........................................................................................................3 2 PRODUCT FEATURE .......................................................................................3 3 SPECIFICATION.................................................................................................4 4 HARDWARE .........................................................................................................6 4.1. DIMENSION ........
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1 OVERVIEW Congratulation on your purchase of Altina, which manufacture and provide various GPS applications. Altina’s GGM308 GPS Receiver provides you various applications such as car navigation, marine navigation, mapping, surveying, security, agriculture and so on. It communicates with device (such as PocketPC or notebook) via compatible dual-channel through RS-232 or TTL and saves satellite data by built–in backup memory. Low power consumption technology enables GGM308 and your
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Differential capability utilizes real-time RTCM corrections to provide 1-5 meter precise position accuracy. FLASH base program memory 3 SPECIFICATION Key Feture Frequency L1, 1575.42 MHz C/A Code 1.023 MHz chip rate Channels 12 Sensitivity -173 dBW Non DGPS (Differential GPS) Position Horizontal 5 to 25 meter CEP, without SA Velocity 0.1 meter/second, without SA Time 1 microsecond synchronized GPS time DGPS (Differential GPS) Position Horizontal 1 to 5 meter, typical
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o o Storage -45 C to +100 C Input Voltage +4.75 ~ 5.5 VDC without accessories. Power consumption <80mA at 4.5- 5.5V input Dimension 2.32" x 1.85" x 0.82" (59.32mm x 51.28mm x 20.3mm) Cable Length 60" (1500mm) 5
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4 HARDWARE 4.1. Dimension 6
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4.2. Output terminal and definition Output terminal: PS-2 female Pin Definition: PS-2 female connector Signal Pin RS-232 RS-232+TTL 1 TX (RS232) TX 2 +5VDC +5VDC 3 NC TX (TTL) 4 Ground Ground 5 DGPS IN RX (TTL) 6 RX RX (RS232) 7
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5. SOFTWARE DATA NMEA 0183 V2.2 Protocol Use RS-232 interface 4800 bps, 8 bit data, 1 stop bit and no parity. 5.1. NMEA Output Message Table 5-1 NMEA-0183 Output Messages NMEA Record Description GPGGA Global positioning system fixed data GPGLL Geographic position: latitude/longitude GPGSA GNSS DOP and active satellites GPGSV GNSS satellites in view GPRMC Recommended minimum specific GNSS data GPVTG Course over ground and ground speed 5.2. Global Positioning System Fix Dat
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Table 5-2 GGA Data Format-continue Name Example Units Description Units M Meters 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 End of message termination Table 5-3 Position Fix Indicator Value Description 0 0 Fix not available or invalid 1 GPS SPS Mode, fix valid 2 Differential GPS, SPS Mode, fix valid 3 GPS PPS Mode, fix valid 5.3. Geographic Position with
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5.4. GNSS DOP and Active Satellites (GSA) Table 5-4 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 5-5 GSA Data Format Name Example Units Description Message ID $GPGSA GSA protocol header Mode 1 A See Table 5-6 Mode 2 3 See Table 5-7 Satellite Used(1) 07 Sv on Channel 1 Satellite Used(1) 02 Sv on Channel 2 Satellite Used Sv on Channel 12 PDOP 1.8 Position Dilution of Precision HDOP 1.0 Horizontal D
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5.5. GNSS Satellites in View (GSV) Table 5-8 contains the values for the following example $GPGSV,2,1,07,07,79,048,42,02,51,062,43,26,36,256,42,27,27,138,42*71 $GPGSV,2,2,07,09,23,313,42,04,19,159,41,15,12,041,42*41 Table 5-8 GSV Data Format Name Example Units Description Message ID $GPGSV GSV protocol header Number of 2 Range 1 to 3 Messages Message Number 1 Range 1 to 3 Satellites in View 07 Range 1 to 12 Satellite ID 07 Channel 1 (Range 1 to 32) Elevation 79 degre
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Table 5-9 RMC Data Format Name Example Units Description Message ID $GPRMC RMC protocol header UTC Time 161229.487 hhmmss.sss Status A A=data valid or V=data not valid Latitude 3723.2475 ddmm.mmmm N/S Indicator N N=north or S=south Longitude 12158.3416 dddmm.mmmm E/W Indicator W E=east or W=west Speed Over 0.13 knots Ground Course Over 309.62 degreesTrue Ground Date 120598 ddmmyy Magnetic degrees E=east or W=west Variation(1) Checksum *10 End of mes
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Units K Kilometers per hour Checksum *6E End of message termination NOTE: SiRF Technology Inc. does not support magnetic declination. All “course over ground” data are geodetic WGS84 directions. 5.8. RTCM Received Data The default communication parameters for DGPS Input are 4800 baud, 8 data bits, stop bit, and no parity. Position accuracy of less than 5 meters can be achieved with the GGM-308 by using Differential GPS (DGPS) real-time pseudo-range correction data
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item. D) Obtaining warranty service: Dated proof of original purchase will be required. Products or parts shipped by Customer to Altina must be sent postage-paid and packaged appropriately for safe shipment. Altina is not responsible for Customer products received without a warranty service authorization and may be rejected. Repaired or replacement products become the property of Altina. WARRANTIES EXCLUSIVE: THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND IN LIEU OF ALL
