To configure SBAS:
For all new Topcon receivers that support automatic tracking, you can select one of two modes of using SBAS satellites: Any Available or Custom.
Note: If the Topcon Legacy receiver was selected in the Rover Receiver dialog, SBAS setup will proceed in the Custom mode.
For custom selection, select the boxes near the PRN numbers of the satellites as required.
Note: All satellites can be selected. The satellite most available from those selected will be used in DGPS solution.
If the Topcon Legacy receiver was selected in the Rover Receiver dialog, no more than two SBAS satellites can be enabled for tracking.