Solution
Vector Signal Transceiver Instrument Design Libraries (IDL) are not available for NI PXIe-5840. Advanced users can request Instrument Driver FPGA Extensions for low level FPGA programming using this
web request form .
If the request is accepted, user will be provided with detailed document explaining the hardware setup, software setup, required driver files, procedure and caveats to allow FPGA customizations. The instrument driver FPGA source code is the starting point for creating your own instrument driver FPGA extensions.