MicroStation requires your GPS device to send these two NMEA sentences, at a minimum:

• GPGGA
• GPRMC

Showing the satellites in use on the user interface requires these NMEA sentences, so your GPS device should send them as well:

• GPGSA
• GPGSV

MicroStation processes the following NMEA sentences and makes the data from them available to applications, but it does not require this data. Sometimes this data is redundant with data from the sentences above.

• GPVTG
• GPGST
• GPZDA

MicroStation also processes the Leica proprietary "local position quality sentence," GPLLQ. If it is present, the easting, northing, easting/northing fix quality, and elevation are acquired from it. However, the elevation is also in the GGA sentence.

Any other sentences that your GPS sends are not processed by MicroStation.