iSXblue/SXBlue II GNSS Series Technical Reference Manual
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The above interface will be displayed and allows to edit all information contained in the header along
with some output configuration parameters. Click on any of the line to activate the entry line.
Once done, select either RINEX2 or RINEX3 format and click on the “Process Rinex” button.
5.
Complete NMEA Interface
The iSXBlue/SXBlue II supports a selection of NMEA 0183 and proprietary binary messages. This
current chapter describes the NMEA interface in detail and chapter 6 describes the Binary messages. It’s
your choice as a systems designer to choose whether or not to support a NMEA-only software interface or
a selection of both NMEA and binary messages. The SXBlue II is configured using only NMEA
commands.
5.1
NMEA Message Elements
NMEA 0183 messages have a common structure, consisting of a message header, data fields, checksum,
and carriage return/line feed message terminator. An example NMEA sentence follows:
$XXYYY,zzz,zzz,zzz…*xx<CR><LF>
The components of this generic NMEA message example are displayed in Table 5-1.
Table 5-1 NMEA Message Elements
Element
Description
$
Message header character
XX
NMEA Talker field. GP indicates a GPS talker
YYY
Type of GPS NMEA Message
zzz
Variable Length Message Fields
*xx
Checksum
<CR>
Carriage Return
<LF>
Line Feed
Null, or empty fields occur when no information is available for that field.
Factory default settings are shown with an “
*
” next to the values.
5.2
General Commands
This section presents various commands relating to the general operation and configuration of the
iSXBlue/SXBlue II. The following table provides a brief description of the general commands supported
by the receiver.
