C-Nav3050 User Guide

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C-Nav3050 User Guide | Manualzz

C-Nav3050 User Guide

These five ports (COM1, ETH1, ETH2, ETH3, and ETH4) normally used to input and output proprietary messages used for navigation and receiver setup. It is also the only port that can be used to receive NTRIP or CCS OTI through the RJ-

45 Ethernet plug on the


cable. This section describes the default messages needed to best initiate surveying with minimal effort.

The user has full control over the utilized message types and their associated rates via C-Nav proprietary software.


Configuration - Control or Data Port

Rate - RS-232 / RS-422: 9.6 to 115.2 kbps USB 2.0: 12 Mbps

These ports are normally used to output data to other devices or machines that can make immediate use of the precise positioning data available from the C-

Nav3050. The data port outputs NCT Binary Messages and NMEA Messages, and when applying external DGNSS corrections, also serves as the DGNSS correction input port.

Bluetooth Virtual COM Port

Configuration - Control or Data Port

Rate - 230.4 kbps

The PC’s virtual COM port is used to input and output proprietary messages used for navigation and receiver setup. Contact C-Nav Support for more information on using the C-Nav3050 Bluetooth functionality.

Output Messages

NCT Binary Output Message Descriptions:

ALM1B (Packed Almanac): Data corresponding to each satellite in the

GPS constellation, including GPS Week number of collected almanac,

GPS Time of week [in seconds] of collected almanac, almanac reference week, almanac reference time, almanac source, almanac health, pages 1-

25, and sub-frames 4 and 5. Packed almanac data for 32 GPS or 24

GLONASS satellites.

CHNLSTATUS1B (Channel Status): Receiver channel status information containing GNSS engine status, number of satellites viewed / tracked,



Page 77 of 186 6/8/2015


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