TracVision M5/M7 User’s Guide
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Appendix A - Advanced Settings and Functions
Serial Port Outputs
Serial ports 1 and 2 can be individually programmed to output any of
the message formats described in this section (serial port 3 is disabled
when a TracVision system is connected to the ADCU). Up to four
NMEA 0183 listening devices can be connected to each of the serial
ports. Serial port 1 also has a pass-through duplicate port.
Each serial port can be independently programmed to output data at a
rate from 1 Hz to 20 Hz, selectable in 1 Hz increments. The default
data rate is 10 Hz.
NOTE:
Serial port 3 is disabled. If serial port 3 is selected, the “No Port 3 TV
Setup” screen will be displayed. Press any key to exit the screen.
Message Formats
NMEA
The NMEA message format conforms to the NMEA 0183 version 2.20
standard for message structure. The following NMEA outputs can be
selected: BWC, GGA, GLL, HDG, HDM, HDT, VTG, and XTE.
NOTE:
The data rate of serial port 1 is 4800 baud; the default data rate of
serial port 2 is 9600 baud. However, if serial port 2 is selected for NMEA
output, the baud rate is automatically changed to 4800 baud.
KVH RS-422
The KVH message format is an RS-422 message format giving
stabilized pitch, roll, and yaw data. Data output from port 1 will be
4800 baud, while data port 2 will be 9600 baud; this message can be
used for any device that is able to receive this data rate.
Cetrek Proprietary
The Cetrek proprietary message format is a stabilized heading output
for use with Cetrek autopilot systems. If an active GPS connection is
detected, you can select either magnetic or true heading.