Collaboration is key with the modular PXI series from National Instruments (NI). While some test and measurement scenarios require multiple testing stations, the PXI platform allows compatible modules to be effortlessly connected. The result? Versatile capabilities from a single interconnected instrument.
In a recent webinar, the team at NI showcased their newest 3-in-1 PXI instrument, which is made by connecting the PXIe-5633 Vector Network Analyzer with the PXIe-5842 Vector Signal Transceiver. When working together, these powerhouse modules create an all-in-one tool that functions as an RF Signal Analyzer, an RF Signal Generator, and a PXI VNA Instrument. In this post, we will take a look at the features of the individual modules that make up this unique instrument and take a look at the features that come from combining the two.
The PXIe-5842 Vector Signal Transceiver
Described as the “most versatile PXI VST in the industry”, the PXIe-5842 produces and analyzes signals with up to 2 GHz of instantaneous bandwidth. This versatile device is also incredibly scalable, fitting together with several additional modules in order to optimize testing workflows. The PXIe-5842 reaches its full potential when used in combination with other NI modules.
Possible configurations include the PXIe-5824 VST, which refers to the use of both the PXIe-5842 and the PXIe-5655; or the PXIe-5824 with S-Parameters, which pairs the PXIe-5824 with both the PXIe-5655 and the PXIe-5633.
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The PXIe-5633 Vector Network Analyzer
Equipped with a single slot, the PXIe-5633 combines the testing capabilities of a vector network analyzer (VNA) and a vector signal transceiver (VST) into a single handy model. Among the device’s features are comprehensive vector analysis, de-embedding, and precise calibration (both automated and manual).
S-parameter measurements are crucial for thoroughly characterizing RF equipment, which is why pairing both of these modules is incredibly effective. The PXIe-5633 serves as a one slot VNA add-on for the PXIe-5842, allowing both large and small signal testing to be narrowed down into one test insertion. In addition, the PXIe-5633 offers two RF ports which are bidirectional and can cover up to 26.5 GHz when in VNA, VSA, or VSG mode. This device also offers support and compatibility with software including InstrumentStudio and RFmx.
When used together, the PXIe-5633 and the PXIe-5842 offer two different testing modes for VSG, VSA, and S-parameters.
VST through VNA Mode: For 26.5 GHz measurements on common I/O ports, the VST through VNA Mode uses through path signal conditioning, self-calibration, and driver abstraction- resulting in behavior and performance very similar to a VST. With this mode, both ports are bidirectional, meaning they can be used for both sourcing and measuring.
VNA Mode: The VNA Mode for testing comes ready for system-level integration, offering a selection of dedicated onboard receivers and synthesizers that can be utilized for S-parameter testing. Some of the standout features of the VNA mode include low source harmonics, high dynamic range, and superb directivity. The two ports for S-parameter measurements are also auto-reversing.
The combined modules of the 3-in-1 PXI Instrument provide an all-in-one programming environment that utilizes both RFmx and InstrumentStudio. NI’s RFmx is a collection of software programs that all work together with RF instrumentation for a wide range of applications, including IoT, aerospace, defense, and cellular connectivity. RFmx features a front panel that natively integrates within InstrumentStudio, boasting an easy-to-use interface with a familiar feel.
This instrumentation makes configuring multiple composite measurements a breeze. Additionally, debugging and monitoring automated tests is made easy with real-time execution monitoring and interactive debug capabilities.
Other useful programming features include the ability to save traces and results from measurements to file, and the fact that configurations between SFP and automation code can be saved and loaded.
Combining the PXIe-5842 VST and the PXIe-5633 VNA results in unparalleled convenience for VSA, VSG, and VNA testing from one interconnected device. This 3-in-1 device eliminates the necessity of dual insertion test stations, opting instead for simple single insertion setups. The capabilities and features of the fully bidirectional testing for this combined instrument truly make it worthy of being called a leader in the industry.
Apex Waves has the PXI parts you need to replicate the 3-in-1 functionality of this instrumentation! Request a quote today or email us at sales@apexwaves.com.
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