The National Instruments PXI-2546 RF Multiplexer Switch Module, identified by part number 778572-46, is designed for high-performance signal routing in RF applications. It features a maximum switching voltage of 30 Volts and a current rating of 0.5 Amps per channel, supporting up to 10 Watts of RF power channel to common. The module's low initial DC path resistance of less than 0.25 Ω minimizes power loss, while its end-of-life resistance remains at or below 1.0 Ω, ensuring consistent reliability. Compliant with a 3U, one-slot PXI/cPCI form factor, the PXI-2546 occupies a single slot in a PXI chassis, measuring 21.6 cm by 2.0 cm by 13.0 cm (8.5 in. by 0.8 in. by 5.1 in.) and weighing 255 g (9 oz). The module operates at a power consumption of 3.7 W at 5 V and 0.3 W at 3.3 V, with insertion losses of less than 0.7 dB at frequencies up to 1 GHz and 1.3 dB at 2.7 GHz. The Voltage Standing Wave Ratio (VSWR) is maintained below 1.25 up to 1 GHz and below 1.6 up to 2.7 GHz, enhancing signal integrity. Trigger inputs and outputs are supported through PXI trigger lines <0...7>, with pulse widths ranging from 150 ns to 62 µs. The module offers a mechanical life expectancy of 1 million cycles and an electrical life expectancy of up to 300,000 cycles under maximum load, ensuring long-term operational reliability. It is rated for ambient temperatures from 0 °C to 55 °C and can survive storage conditions ranging from -20 °C to 70 °C, with a humidity tolerance of 5% to 85% relative humidity, non-condensing. Suitable for indoor use only, the module meets Pollution Degree 2 standards and is a preferred choice for precision measurement, control, and laboratory applications.

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