Spectra Precision Survey Pro v4.6 Recon and Nomad User Manual - Manual (Page 340)

User’s Manual – GPS Mode
330
Serial Connection
These steps describe how to configure the software when connecting
to the receivers with a serial cable. This is the default setting and
does not need to be configured unless it was changed.
1. If communicating with both GPS receivers using
serial cables, tap Change Settings… from the Job
> Settings > Connection screen.
Note: You could alternatively run the Bluetooth Setup
Wizard and when no Bluetooth receivers are detected, a
serial connection will automatically be selected.
2. Select Serial for both the Rover and Base receiver
and tap to finish.