National Instruments 778572-35

The National Instruments part number 778572-35, also known as the PXI-2535 PXI Matrix Switch Module, is a versatile solution designed for configurable signal switching within industrial automation systems. This module features a 1-wire 4 × 136 matrix topology, supporting a maximum switching voltage of ±12 VDC and 8 VAC channel-to-ground, with a maximum switching power of 1.2 W per channel. The module offers high DC isolation resistance, exceeding 1 GΩ at 23 degrees Celsius and 334 MΩ at 55 degrees Celsius.

Trigger signals can be routed to eight input lines, capable of minimum pulse widths of 70 ns, facilitating synchronization across connected systems. Output trigger signals can be directed with pulse widths ranging from 1 μs to 62 μs. The module requires a power supply of 1.7 W at 3.3 V and 1.3 W at 12 V. It incorporates field-effect transistor (FET) switching technology, which provides a typical operating time of 12 µs and allows for a maximum scan rate of 50,000 crosspoints per second, ensuring a robust performance with an expected unlimited relay life.

Designed as a compact single-slot 3U module, the PXI-2535 is compatible with PXI (PCI eXtensions for Instrumentation) and cPCI (CompactPCI) systems. The physical dimensions are 21.6 cm × 2.0 cm × 13.0 cm (8.5 × 0.8 × 5.1 in.) and it weighs 159 g (5.6 oz). Operating conditions are optimized for environments between 0 to 55 degrees Celsius, with storage capabilities extending from -40 to 70 degrees Celsius. The module supports relative humidity levels of 5% to 85%, non-condensing, and is rated at a pollution degree of 2, making it suitable for low to moderate contamination environments. The PXI-2535 is intended for indoor use and can be mounted at altitudes of up to 2000 meters.