The National Instruments part number 777754-01 corresponds to the PXI-2565 PXI Relay Module, which is engineered for high-performance relay switching applications. This module features a 16-channel Single-Pole Single-Throw (SPST) configuration, providing both high channel density and dependable operation for various signal-switching tasks. Each relay supports a maximum switching voltage of 125 V DC and 250 V AC, with a maximum current of 7 A AC or 5 A DC per channel, thereby accommodating a wide spectrum of operational needs. The typical relay operating time is 5 milliseconds, with a maximum of 10 milliseconds, ensuring rapid switching capabilities. The PXI-2565 is designed for longevity, boasting a mechanical life of 50 million cycles and an electrical life of up to 100,000 cycles under maximum load conditions.

This relay module supports input triggering from PXI trigger lines 0 to 7, requiring a minimum pulse width of 70 nanoseconds. Output triggers are programmable, offering pulse widths from 1 microsecond to 62 microseconds, allowing for precise timing and synchronization with other measurement instruments. The unit fits into a 3U PXI Express chassis and utilizes a 200-pin LFH connector to maintain secure connections. Dimensions for the module are 21.6 cm by 4.1 cm by 13.0 cm (8.5 in by 1.6 in by 5.1 in), with a weight of approximately 390 grams.

Designed for indoor use, the PXI-2565 operates effectively at ambient temperatures ranging from 0 to 50 degrees Celsius and can be stored in temperatures from -20 to 70 degrees Celsius. It supports a relative humidity of 5% to 85% (non-condensing) and is rated for a maximum altitude of 2000 meters. Additionally, the module is capable of withstanding operational vibrations of 5 Hz to 500 Hz at 0.3 grms, as well as shock loads up to 30 g peak in accordance with IEC 60068-2-27 standards. The use of electromechanical non-latching relays with gold-flash over silver alloy contacts enhances durability and minimizes contact resistance, ensuring reliable performance in various demanding environments.