PXI-2546

The PXI-2546 is a PXI RF Multiplexer Switch Module from National Instruments, designed for RF signal routing, automated RF testing, stimulus-response testing, wireless validation, and modular PXI test systems. As a 2.7 GHz, 50 Ω, dual 4×1 PXI RF multiplexer switch module, the NI PXI-2546 allows users to route RF signals through two independent 4×1 multiplexer banks in a single PXI module. NI lists the PXI-2546 with part number 778572-46.

The NI PXI-2546 is useful for engineers who need to switch multiple RF signal paths in automated test systems. It can be used to route signals between RF signal generators, analyzers, devices under test, antennas, filters, amplifiers, receivers, and other RF components. Compared with manual RF switching, the PXI-2546 allows RF paths to be controlled through software, making it suitable for repeatable test sequences, production validation, and laboratory automation.

One of the main advantages of the PXI-2546 RF Multiplexer Switch Module is its dual 4×1 multiplexer topology. This multibank architecture is especially useful for test systems that require parallel RF operations, such as stimulus-response testing, where one bank can route stimulus signals while the other bank routes response or measurement signals. NI describes the multibank architecture as ideal for systems requiring parallel operations such as RF stimulus-response testing.

The National Instruments PXI-2546 supports 50 Ω RF signal routing up to 2.7 GHz. This frequency range makes it suitable for many RF and wireless test applications, including communication device validation, RF front-end testing, filter testing, amplifier testing, antenna path switching, and automated RF signal routing. The module also provides strong insertion loss, VSWR, and isolation performance to help minimize signal degradation during RF switching.

The PXI-2546 is suitable for PXI-based systems where RF path control must be automated and repeatable. Engineers can use it to select between multiple RF sources, connect a device under test to different measurement instruments, switch antenna paths, or automate RF signal routing in production test environments. Its dual-bank configuration gives users more flexibility than a single 4×1 multiplexer when building compact RF test systems.

Another useful feature of the NI PXI-2546 is onboard relay count tracking. This function helps users monitor relay usage and estimate relay lifetime, reducing the risk of unexpected downtime in automated test systems. Relay count tracking is especially valuable in production environments where switch modules may operate repeatedly over long periods.

In system integration, the PXI-2546 PXI RF Multiplexer Switch Module installs into a compatible PXI or PXI hybrid chassis and can be used with other PXI instruments such as RF signal generators, spectrum analyzers, vector signal transceivers, digitizers, source measure units, and data acquisition modules. This allows engineers to build compact automated RF test systems with software-controlled signal routing.

The PXI-2546 is suitable for applications such as RF signal routing, wireless device testing, RF stimulus-response testing, RF path selection, antenna switching, amplifier testing, filter validation, production RF test, and automated measurement systems. Its dual 4×1 architecture makes it especially useful when two independent RF switching banks are needed in one PXI slot.

Overall, the NI PXI-2546 PXI RF Multiplexer Switch Module is a practical RF switching solution for PXI-based automated test systems. With its 2.7 GHz bandwidth, 50 Ω impedance, dual 4×1 multiplexer topology, multibank architecture, relay count tracking, and software-controlled switching, the PXI-2546 is well suited for RF signal routing, wireless validation, stimulus-response testing, production testing, and modular PXI test applications.