This application can simulate NMEA ARPA track in form as a TTM sentence.
For sending the TTM sentence a serial device is needed (fx. a USB/Serial converter with a FTDI chip).
The default setting for the serial device is: Baud rate: 4800, Data bits: 8, Parity: None, Stop bits: 1, Handshake: None.
Changes to the TTM sentence can be made while still sending the TTM sentence.