|NI-RFSA 18.1 Help|
|NI-RFSA 18.2.1 Help|
|NI-RFSA 19.1 Help|
NI-RFSA instrument driver FPGA extensions for VSTs enable you to use precompiled FPGA bitfiles to customize the behavior of the VST FPGA while maintaining the functionality of the NI-RFSA instrument driver.
Before you begin using NI-RFSA instrument driver FPGA extensions, you must install NI-RFSA and LabVIEW. You must also download a precompiled bitfile to use NI-RFSA instrument driver FPGA extensions. Visit ni.com/info and enter the Info Code ex6h8h, then select your hardware, and browse the download page to download an NI-RFSA FPGA extensions precompiled FPGA bitfile.
|Note Certain NI-RFSA instrument driver FPGA extensions might require you to install the instrument design libraries. Refer to the installation requirements of individual NI-RFSA instrument driver FPGA extensions located on the download page for more information.|
The precompiled bitfiles are included in examples that illustrate how to use the precompiled bitfiles. These examples contain three parts—a precompiled bitfile featuring application-specific IP, a host-based example that uses NI-RFSA, and IP dependencies, such as source code. These examples are distributed through the VI Package Manager, which installs with LabVIEW.
When you install NI-RFSA, a model-specific folder for your VST device is created in the following location:
The instrument driver searches for precompiled bitfiles in this model-specific folder. For the instrument driver to recognize your precompiled bitfile, ensure that the precompiled bitfile is located in the model-specific folder that corresponds to your device.
|Note The PXIe-5624 is supported by NI-RFSA only as part of the PXIe-5668 VSA. Refer to NI IF Digitizers Help, located at ni.com/manuals, for more information about using the PXIe-5624 as a stand-alone device.|
NI-RFSA includes two FPGA bitfiles for use with the PXIe-5668 in a separate directory from the directories listed in the previous section. The PXIe-5668 default 400 MHz bitfile and the optional 800 MHz bitfile are located in the following directory:
To use NI-RFSA instrument driver FPGA extensions, you must specify the precompiled bitfile you want to use when you initialize the instrument driver session. If you want to access additional FPGA functionality provided by the precompiled bitfile, you must also obtain an FPGA reference to use with the LabVIEW FPGA host interface.
|Note You can only load one bitfile on a VST device at a time. If you are using both NI-RFSA and another device driver such as NI-RFSG or NI-RIO to simultaneously access the same instrument, both sessions must initialize with the same bitfile.|
Complete the following steps to open an instrument driver session that uses a precompiled bitfile:
where filename.lvbitx is the file name of the bitfile you want to load.
Complete the following steps to obtain an FPGA reference to use with the LabVIEW FPGA host interface:
The following figure illustrates how the code might look after completing the preceding steps.
Visit ni.com/info and use the Info Code ex6h8h to download precompiled NI-RFSA instrument driver FPGA extensions bitfiles.
Visit ni.com/info and enter the Info Code exkt9h to learn more about instrument driver FPGA extensions.
NI-RFSA Driver Setup Options—Refer to this topic for more information about using the NI-RFSA Driver Setup string.