Spectra Precision Survey Pro v4.5 Recon and Nomad Reference Manual - Manual (Page 205)

Survey Menu – GPS Module
R-197
Note: The Post Processing screen is used to start logging with post
processing receiver types only. If you wish to record post processing
data simultaneous with RTK, then you should set the recording
interval on the Job | Settings | Post Process screen and then start
the base and rover using the Start GPS Survey wizard.
When you tap the Post Processing menu while connected to either the
RTK base or rover, you have only two options. If the RTK receiver is
already recording data, you are prompted if you wish to close the open
logging file. If the RTK receiver is not logging data, you are prompted
if you wish to clear the RTK setup and proceed using this receiver for
post processing data collection only.
Static / RTK Rover Receiver Session
Survey Data Collection -or-
Survey Post Processing
Start Recording . -or-
Survey Control Points Post Process -or-
Survey Data Collection Post Process .
The Receiver Session screen is used to enter the station information
and antenna height for a post processing data collection session.
Starting a Static Session During timed stop and go session