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StarGPS GPS-NX01 User Manual

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Ultra Low Power, High Sensitivity
GPS-NX01 Receiver

User Guide

PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca
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Summary of Contents for StarGPS GPS-NX01

  • Page 1: User Guide

    Ultra Low Power, High Sensitivity GPS-NX01 Receiver User Guide PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 2 1. Introduction 1.1 Overview The GPS-NX01 Smart Receiver is a n ultra low power GPS receiver based on the proven technology of the NemeriX NJ1030A chipset. The positioning application meets strict needs such as car navigation, mapping, surveying, security, agriculture and so on. Only a clear view of the sky and a power supply are needed. With its ultra low power consumption, the smart receiver tracks up to 16 satellites at a time, re-acquires satellite signals in 1 second (average) and updates position data every second.

  • Page 3: Hardware Interface

    2. Hardware Interface The GPS-NX01 includes a low noise, high gain active antenna in a unique waterproof case. Simply connect the PS/2 female connector to one of the optional accessories and link to either your notebook PC, PDA, telescope or other device.
  • Page 4 RS-232 to PS/2: 45 cm Mini Din Female connector function definition: Pin Signal N.C. N.C. N.C. N.C. N.C. N.C. PS/2 composite connector function definition (to PC): Signal +5VDC N.C. N.C. N.C. N.C. PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...

  • Page 5: Usb Driver Installation

    COM Port setting. 4. Warranty The GPS-NX01 receiver is warranted to be free from defects in material and functions for one year from the date of purchase. Any failure of this product within this period under normal conditions will be replaced at no charge (excluding shipping costs).

  • Page 6: Appendix : Software Specification

    $PNMRX300 Almanac data transfer In / Out $PNMRX301 Ephemeris data transfer. $PNMRX302 Ionospheric correction $PNMRX303 UTC Time $PNMRX304 GPS Constellation Health Status $PNMRX600 SW Version report $PNMRX601 ISP mode $PNMRX603 Settings Report PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...

  • Page 7: General Nmea Format

    (0) 1 Age in seconds Blank (Null) fields when Differential DGPS is not used. Corrections Diff 0000. Reference Corrections Checksum (0) 3 2 digits. Message <CR> <LF> ASCII 13, ASCII 10. terminator PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 8 SV on channel 1. Satellites Used SV on channel 2. … Satellites Used SV on channel 12. PDOP Float HDOP Float VDOP Float Checksum 2 digits Message terminator <CR> <LF> ASCII 13, ASCII 10 PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 9 Azimuth of satellite in degrees. (0) 1 Signal to noise ration in dBHz, null if the sv is not in tracking. Checksum (0) 3 2 digits. Message <CR> ASCII 13, ASCII 10. terminator <LF> PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 10 Speed in knots. Units Char N = knots. Speed Float Speed units Char K = Km/h. Mode Char A Autonomous Checksum (0) 3 2 digits. Message terminator <CR> <LF> ASCII 13, ASCII 10. PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 11 0. None. 1. Odd. 2. Even. Checksum (0) 3 2 digits. Message <CR> <LF> ASCII 13, ASCII 10. terminator Example: $PNMRX100,0,4800,0*xx : sets the UART baud rate to 4800 bps and no parity. PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 12 $PNMRX101,-742507,-5462738,3196706,,,,,,*xx: Sets the receiver position to ECEF (,,) and executes a software reset $PNMRX101,,,,,,,,4,*xx : Sets the fix procedure mode the cold start. This will be valid after each reset, until this value is changed. PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 13 $PNMRX103, GSV, 2,GGA, 1,ZDA, 0*xx: GSV is output every 2s, GGA every 1s and no ZDA. $PNMRX103, GSV, 2,GGA, 1,ZDA, 0,,,,,,,,,*xx : same as above, but using a fixed length message $PNMRX103, ALL, 2*xx: all messages are output every 2s. $PNMRX103, ALL, 0*xx: skips all messages. PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 14 - If used, all five components (Lat, N/S, Long E/W, alt) of the LLA position must be provided, otherwise the message is declared invalid as a whole - Modifying the LLA coordinates triggers a software system reset after successful execution of the message. PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 15 The value must be in the range [6000000, 9000000] Checksum (0) 3 2 digits. Message <CR> <LF> ASCII 13, ASCII 10. terminator Examples: $PNMRX106, 0,500, -2000,-2000,-2000,8257224,8137000*00*xx : User defined Datum $PNMRX106, 1,216,,,,,*xx : WGS 84 Datum PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 16 <CR> <LF> ASCII 13, ASCII 10. terminator Examples: $PNMRX107,300,1*xx : Output the almanac stored in NVRAM $PNMRX107,301,2*xx : Output Ephemeris will be output on change $PNMRX107,ALL,2*xx : Output all output messages (300,301,302,303,304) PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 17 (0) 3 2 digits. Message terminator <CR> <LF> ASCII 13, ASCII 10. Example: $PNMRX108,GGA,GLL,GSA*xx : Enables the GGA, GLL and GSA in this sequence, output every second. All other messages are disabled PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 18 0 = Auto Navigation Mode 2 1 = Static Maximum Altitude Unsigned Meters. Examples: $PNMRX110,0,-2:0*xx : Set the local time to –2 hours 0 minutes. $PNMRX110,4,35*xx : Set the minimum SNR to 35 PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 19 COLD See Section 2.1 for definition. WARM See Section 2.1 for definition. HOT See Section 2.1 for definition. Checksum (0) 3 2 digits. Message <CR> <LF> ASCII 13, ASCII 10. terminator Example: $PNMRX111*xx : Resets the system PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 20 Format Min chars Max chars Notes Message ID $PNMRX113 PNMRX113 protocol header. Checksum (0) 3 2 digits. Message terminator <CR> <LF> ASCII 13, ASCII 10. Example: $PNMRX113*xx : Stops GPS Core activities. PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 21 Mean 24 bit signed int. Mean anomaly 24 bit signed int. 11 bit signed int. 11 bit signed int. Checksum (0) 3 2 digits. Message <CR> <LF> ASCII 13, ASCII 10. terminator PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 22 10 bit integer. 16 bits. 8 bit signed integer. sec/sec sec/sec 16 bit signed integer. Seconds 22 bit signed integer. Checksum (0) 3 2 digits. Message <CR> <LF> ASCII 13, ASCII 10. terminator PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 23 32 bit signed integer. Radian 16 bit signed integer. Root A Meters 32 bit signed integer. second 16 bit unsigned integer. Checksum (0) 3 2 digits. Message terminator <CR> <LF> ASCII 13, ASCII 10. PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 24 Satellite Vehicle Id Decimal satellite vehicle id from 1 to 32. ß 0 ß 1 ß 2 ß 3 Checksum (0) 3 2 digits. Message <CR> <LF> ASCII 13, ASCII 10. terminator PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 25 PNMRX110 protocol header. SV health code if ? 0. Health Code Char SV health code if ? 0. Health Code Char Checksum (0) 3 2 digits. Message terminator <CR> <LF> ASCII 13, ASCII 10. PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 26 (7 times) Message Delay 7xInt Message Delay (7 times) NMRX Message Enabled Nemerix Message Enabled Uart Settings Uart settings Checksum (0) 3 2 digits. Message terminator <CR> <LF> 2 ASCII 13, ASCII 10. PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 27 Time Offset (Local zone hours) (-)2 (-)2 Offset of local time zone (-13) to 13 Time Offset (Local zone (-)2 (-)2 minutes) Checksum (0) 3 2 digits. Message terminator <CR> <LF> ASCII 13, ASCII 10. PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 28 Message ID $PNMRX603 PNMRX603 protocol header. Message Nb Acq threshold 1 Acq threshold 2 Noise floor Kalman Mode Default altitude Checksum (0) 3 2 digits. Message terminator <CR> <LF> ASCII 13, ASCII 10. PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...
  • Page 29 Major axis Semi major axis of reference geode Checksum (0) 3 2 digits. Message <CR> <LF> ASCII 13, ASCII 10. terminator Example: $PNMRX603*xx : Display the content of the Settings stored in NVRam PixSoft Inc. Tel: +1.204.885.4936 Fax: +1.204.895.4173 E-mail: sales@stargps.ca...