User manual HOLUX GR-86

[. . . ] Software Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4. 1 NMEA Transmitted Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4. 2 RTCM Received Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4. 3 . Manufacturing Default. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5. Mechanical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5. 1. GR-86 outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5. 2 Pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6. [. . . ] Operating temperature range -20 to +70 2). Storage temperature range -40 to +85 . 3. 3. Physical Characteristics 1) Active Size: 24(W) x 24(L) x 3(H) (mm) 2) Weight: less than 4 g HOLUX Technology, Inc. 5 1F, No. 30, R&D Rd. II, Hsin-Chu City 300, Science-based Industrial Park, Taiwan TEL: 886-3-6687000 FAX: 886-3-6687111 E-mail:info@holux. com. tw Website:www. holux. com. tw GPS Product series With HOLUX, You never lose the way! 4. Software Interface The GR-86 interface protocol is based on the National Marine Electronics Association's NMEA 0183 ASCinterface specification, which is defined in NMEA 0183, Version 2. 2 and the Radio Technical Commission for Maritime Services (RTCM Recommended Standards For Differential Navstar GPS Service, Version 2. 1, RTCM Special Committee No. 104). As soon as the initial self-test is complete, the GR-86 begins the process of satellite acquisition and tracking automatically. Under normal circumstances, it takes approximately 42 seconds to achieve a position fix, 38 seconds if ephemeris data is known. After a position fix has been calculated, information about valid position, velocity and time is transmitted over the output channel. The GR-86 utilizes initial data, such as last stored position, date, time and satellite orbital data, to achieve maximum acquisition performance. If significant inaccuracy exists in the initial data, or the orbital data is obsolete, it may take more time to achieve a navigation solution. The GR-86 Auto-locate feature is capable of automatically determining a navigation solution without intervention from the host system. However, acquisition performance can be improved as the host system initializes the GR-86 in the following situation: 4. 1 NMEA Transmitted Messages The default communication parameters for NMEA output are 4800 baud, 8 data bits, stop bit, and no parity. Table 4-1 NMEA-0183 Output Messages NMEA Record GPGGA GPGLL GPGSA GPGSV GPRMC GPVTG GPMSS GPZDA Description Global positioning system fixed data Geographic position- latitude/longitude GNSS DOP and active satellites GNSS satellites in view Recommended minimum specific GNSS data Course over ground and ground speed Radio-beacon Signal-to-noise ratio, signal strength, frequency, etc. PPS timing message (synchronized to PPS) HOLUX Technology, Inc. 6 1F, No. 30, R&D Rd. II, Hsin-Chu City 300, Science-based Industrial Park, Taiwan TEL: 886-3-6687000 FAX: 886-3-6687111 E-mail:info@holux. com. tw Website:www. holux. com. tw GPS Product series With HOLUX, You never lose the way! 4. 1. 1 Global Positioning System Fix Data (GGA) Table 4-2 contains the values for the following example: $GPGGA, 161229. 487, 3723. 2475, N, 12158. 3416, W, 1, 07, 1. 0, 9. 0, M, , , , 0000*18 Table 4-2 GGA Data Format Name Message ID UTC Time Latitude N/S Indicator Longitude E/W Indicator Position Fix Indicator Satellites Used HDOP MSL Altitude (1) Units Geoid Separation(1) Units Age of Diff. Station ID Checksum <CR> <LF> 0000 *18 End of message termination M Example Units Description GGA protocol header hhmmss. sss ddmm. mmmm N=north or S=south dddmm. mmmm E=east or W=west See Table 5-3 Range 0 to 12 Horizontal Dilution of Precision $GPGGA 161229. 487 3723. 2475 N 12158. 3416 W 1 07 1. 0 9. 0 M Meters Meters Meters Meters second Null fields when DGPS is not used (1). Values are WGS84 ellipsoid heights. Table 4-3 Position Fix Indicator Value Description 0 1 2 3 0 Fix not available or invalid GPS SPS Mode, fix valid Differential GPS, SPS Mode, fix valid GPS PPS Mode, fix valid 4. 1. 2 Geographic Position with Latitude/Longitude(GLL) Table 4-4 contains the values for the following example: HOLUX Technology, Inc. 7 1F, No. 30, R&D Rd. II, Hsin-Chu City 300, Science-based Industrial Park, Taiwan TEL: 886-3-6687000 FAX: 886-3-6687111 E-mail:info@holux. com. tw Website:www. holux. com. tw GPS Product series With HOLUX, You never lose the way! $GPGLL, 3723. 2475, N, 12158. 3416, W, 161229. 487, A*2C Table 4-4 GLL Data Format Name Message ID Latitude N/S Indicator Longitude E/W Indicator UTC Position Status Checksum <CR> <LF> Example Units Description GLL protocol header ddmm. mmmm N/S Indicator N N=north or S=south dddmm. mmmm E=east or W=west hhmmss. sss A=data valid or V=data not valid End of message termination $GPGLL 3723. 2475 N 12158. 3416 W 161229. 487 A *2C 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 Message ID Mode 1 Mode 2 Satellite Used(1) Satellite Used(1) . . . . . . Satellite Used(1) PDOP HDOP VDOP Checksum <CR> <LF> 1. Satellite used in solution. Example Units Description GSA protocol header See Table 5-6 See Table 5-7 Sv on Channel 1 Sv on Channel 2 . . . . Sv on Channel 12 $GPGSA A 3 07 02 1. 8 1. 0 1. 5 *33 Position Dilution of Precision Horizontal Dilution of Precision Vertical Dilution of Precision End of message termination HOLUX Technology, Inc. 8 1F, No. 30, R&D Rd. II, Hsin-Chu City 300, Science-based Industrial Park, Taiwan TEL: 886-3-6687000 FAX: 886-3-6687111 E-mail:info@holux. com. tw Website:www. holux. com. tw GPS Product series With HOLUX, You never lose the way! [. . . ] Double click the GPSViewer. exe on your PC, then Holux GPSViewer. exe program will install automatically, as Fig. 17 1F, No. 30, R&D Rd. II, Hsin-Chu City 300, Science-based Industrial Park, Taiwan TEL: 886-3-6687000 FAX: 886-3-6687111 E-mail:info@holux. com. tw Website:www. holux. com. tw GPS Product series With HOLUX, You never lose the way! 4) Open "GPSViewer" on PC, as Fig. 6. 3) 5) The following window is show after executing 6) GPSViewer, as Fig. 6. 4) 7) Setup Baud rate: 4800, then push "Scan" bottom to scan your COM Port . [. . . ]