NI PXI-2520 PXI microwave switch module

NI PXI-2520 PXI microwave switch module

Specification parameters
Frequency range: It usually covers the frequency range of DC-26.5 GHz and can meet the signal switching requirements of most microwave frequency bands.
Channel configuration: Generally, it includes multiple single-pole double-throw (SPDT) or single-pole single-throw (SPST) microwave switch channels. The specific number varies depending on different models. Common configurations include 4-channel and 8-channel ones.
Insertion loss: It has a relatively low insertion loss throughout the entire frequency range, typically around 1-2 dB, which helps ensure that the signal maintains high strength and quality during the switching process.
Isolation: It features a relatively high isolation level, typically greater than 60 dB, effectively reducing signal crosstalk between channels and enhancing the accuracy and reliability of signal switching.
Standing wave ratio: It has excellent standing wave ratio performance, generally between 1.2 and 1.5, which can ensure that the reflection of the signal during transmission is small and improve the signal transmission efficiency.

Functional characteristics
High-precision microwave signal switching: Specifically designed for the precise switching of microwave signals, it can quickly and accurately switch between different microwave signal paths, meeting the strict requirements for signal routing in various microwave testing and measurement applications. For example, in the radar system test, it is necessary to precisely connect the microwave signal source with different antenna ports or receiving modules. PXI-2520 can ensure that the parameters such as the amplitude and phase of the signal remain stable during the switching process, thereby guaranteeing the accuracy of the test results.
High-speed switching capability: The switching speed of microwave switches is relatively fast, with typical switching times ranging from tens of nanoseconds to hundreds of nanoseconds, which can meet the testing requirements of rapidly changing microwave signals. For example, in the rapid frequency-hopping test of the communication system, PXI-2520 can complete the switching of signals of different frequencies in a short time and achieve an effective test of the performance of the frequency-hopping system.
Software configurability: Supports software such as NI-Switch Executive. Users can conveniently configure and control the switch module through the software. The status, switching mode and other parameters of the switch channel can be easily set through the graphical interface. The automatic control of the switch can also be realized in the test program through the programming interface, which improves the flexibility and operability of the test system.