Part Number: 778572-34

The National Instruments 778572-34, also known as the PXI-2534, is a compact 1-Wire 8x32 PXI Matrix Switch Module designed for high-performance signal routing applications. This module comprises 8 rows and 32 columns, featuring solid-state relays (SSRs) that provide an unlimited mechanical lifetime and can support simultaneous routing of up to 55 W across all channels. It is engineered for efficient monitoring with onboard relay counting and deterministic operation through hardware triggers.

As a 3U, one-slot PXI/cPCI module, the 778572-34 measures 21.6 x 2.0 x 13.0 cm and weighs only 238 grams. It requires 1 W at 3.3 V and 8 W at 5 V for operation. The module is equipped with a 68-pin male SCSI connector and operates effectively within a temperature range of 0 °C to 55 °C, with storage capabilities between -40 °C and 70 °C, and for use at altitudes up to 2,000 meters.

The PXI matrix switch module exhibits a typical single crosspoint bandwidth exceeding 2 MHz and supports a maximum switching voltage of ±55 VDC or 30 VACrms, with a maximum switching current of 1 A. It can handle a total switching power of 55 W, offering a total path resistance of 1 Ω, with a maximum warranted resistance of 1.4 Ω. The SSR operate time is typically 724 µs, with a maximum of 2.5 ms, and the module achieves a maximum scan rate of 400 crosspoints per second, capable of driving up to 256 relays simultaneously.

Triggering is facilitated through PXI trigger lines 0 to 7, which require a minimum pulse width of 70 ns for input, while output triggers can also be directed to these lines with a programmable pulse width between 1 µs and 62 µs. The 778572-34 adheres to various safety and EMC standards, including IEC 61010-1, EN 61010-1, UL 61010-1, and EN 61326-1, among others, and it is essential to use shielded cables to maintain the specified EMC performance.