SX BLUE GPS iSXblue II+ GNSSTM, Руководство пользователя

Страница: 85 / 107

SXblue Series User Manual 84
Appendix A - Interface
This appendix provides information on interfacing the main aspects of your SXblue
receiver.
The main purpose of the SXblue is to provide differentially corrected position and
related information to a data logging or navigation device in the standard NMEA
format. In addition to the SXblue receiver as a positioning sensor, you may also
have a use for the correction data received by the internal SBAS demodulator.
The following sections detail how to interface your SXblue depending on your
application.
GPS NMEA Output
When operating the SXblue receiver as a differential positioning tool, the data
output from either SXblue communication port (Serial, USB or Bluetooth) is NMEA
data that provides a variety of information, such as position, speed, satellites
tracked, and more. This is the normal (default) data output and mode of operating
the SXblue receiver.
To establish communications between the SXblue receiver and your data logging
or navigation device in this mode of operation, you must:
•
Connect Pin-2 - transmit (TX) of the supplied SXblue Serial cable to the
receive pin (RX) of the data logging or navigation device.
•
Connect Pin-3 - receive (RX) of the SXblue Serial cable to transmit pin (TX)
of the other device if it is able to configure the SXBlue receiver. Otherwise,
this connection is optional.
•
Connect Pin-5 - signal ground of the SXblue Serial Port to the signal return
or ground of the external device.
Figure A-1 illustrates the required interface between the SXblue receiver and an
external device using the serial cable:
Figure A-1 Serial Interface