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GNSS Monitor Module

Updated on May 12, 2026

The GNSS Monitor displays the NMEA output from the GPS receiver used with the LabSat unit. Connect the appropriate USB port to a spare USB port on the PC. The GNSS data being replayed is then displayed in the GNSS Monitor.


When using the internal GPS receiver in LabSat 3, connect the LabSat 3 USB port directly to the PC.

When replaying a dual constellation scenario, the GNSS Monitor display can be changed by toggling between the pages of the LabSat 3 internal monitor.


When using an external GPS receiver, connect the USB port on the external receiver to the PC.

In the software settings tab, set the GPS Monitor option to External Serial.

LabSat 3 Extensions application displaying live GNSS replay telemetry, signal strength graphs, speed profile data, and serial proxy connection status.