Additional Information
Please note that when using NI-USRP drivers, the 'niUSRP Export Signal.vi' located at 'NI-USRP>Synchronization' sub-palette can be used to export some internal signal using 'PPS Trig Out' IO.
When using ‘NI-USRP Simple Streaming’ projects with USRP RIO drivers, the ‘PPS Trig Out’ line appears as an FPGA IO. To operate it from the host, make a control on the FPGA top-level VI that connects to this IO. On the host VI, use
‘FPGA read/write Control’ to access this control. However, please note that these lines are also used in multi-device synchronization and thus cannot be user-controlled in that scenario.
Other USRP RIO IOs, such as 'PPS Trig In' and other Aux IOs can also be accessed from ‘NI-USRP Simple Streaming’ projects in a similar way.