National Instruments SCXI-1169

The National Instruments SCXI-1169 is a high-density, general-purpose switch module designed for medium-power automated testing applications, featuring 100 channels equipped with individual single-pole single-throw (SPST) relays. With a maximum switching capability of 100 VDC or 100 VAC and up to 1 A per channel, the SCXI-1169 offers exceptional versatility and performance. This module is fully software-programmable and includes a 32,000-step scan list that facilitates deterministic scanning, enhancing throughput by allowing rapid cycling through the pre-defined links triggered by an external event, ensuring minimal disruption to the host processor.

In addition to its robust switching capabilities, the SCXI-1169 supports relay closure counting, providing valuable data for predictive maintenance by storing counts for later retrieval via programming. This feature significantly aids users in minimizing unexpected system downtimes. For software integration, the SCXI-1169 is accompanied by the NI-SWITCH driver, compliant with IVI specifications, which streamlines operation across multiple switch modules. The NI Switch Executive software further enhances user experience by offering an intuitive interface for managing and programming high-channel-count systems.

While the SCXI-1169 has been designated as obsolete by National Instruments, it remains available for purchase and repair through authorized distributors like Apex Waves. The compact module measures 7.8 inches by 1.2 inches by 6.7 inches and weighs 26.6 ounces, and is backed by a two- to three-year warranty. For detailed operational guidance, user and maintenance manuals are available for download.