XT55 GPS Startup User’s Guide Confidential/Released
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•Click the Connection/Disconnection icon on the toolbar by the
Click this button to open and close the connection.
Figure 5: SiRFstar demo on selected COM port
•The output messages can be viewed in the Development Data screen. For a description of NMEA messages refer to [3]. The valid/invalid protocols can be recognized on the $GPRMC protocol as shown in figure below. The capital letter “A” means, incoming protocols are valid while the capital letter “V” means incoming protocols are invalid.
Figure 6: Development data screen
XT55_GPS_startup_ug_V02a | Page 10 of 13 | 28.06.2004 |