National Instruments PXI-2558

The National Instruments PXI-2558 (Part Number: 778572-58) is a versatile single-pole double-throw (SPDT) RF relay module designed to enhance the flexibility of video switching networks and maintain consistent signal paths across multiple channels in high-channel-count multiplexers. With a switch bandwidth of 2.5 GHz, the PXI-2558 features a low voltage standing wave ratio (VSWR) specification of 1.8 or less, ensuring the integrity of the source signal and protection from damage. The module achieves a scan rate of 45 cycles per second, facilitating efficient operation in dynamic applications. It is essential for users to verify that the insertion loss and VSWR performance align with their specific frequency requirements. To optimize performance, the design typically favors inherent topologies over cascading multiplexers, where feasible. When an inherent topology is not available, utilizing SPDT relays and multiplexers can ensure uniform signal path lengths across all channels, thereby minimizing measurement discrepancies. The PXI-2558 measures 8.5 x 0.8 x 5.1 inches and weighs 8.0 ounces. A warranty period of 2–3 years is offered, and user and maintenance manuals are readily available for download. For pricing information, please contact a National Instruments sales representative.