National Instruments 778645-01

The National Instruments 778645-01 PXI Chassis, also known as the PXI-1045, is a robust and flexible solution tailored for a diverse array of test and measurement applications. Engineered with an 18-slot PXI backplane, this chassis facilitates seamless trigger routing between devices through customizable trigger routing modules integrated into its backplane. It features two external reference clock BNC connections, enhancing its functionality across various operational scenarios. The chassis is designed to operate efficiently in a temperature range suited for demanding environments, ensuring reliable performance.

The modular architecture of the 778645-01 enhances usability, significantly improving maintainability and reducing mean time to repair (MTTR). Its compatibility with both standard CompactPCI products and 5 V universal PXI-compatible components offers extensive configuration flexibility, allowing the integration of diverse system components regardless of PXI-specific functionalities. With an input voltage range of 100-240 VAC and an operating voltage range of 90-264 VAC, the chassis accommodates a wide range of power supply options. Safety is prioritized through a 12 A circuit breaker that prevents over-current scenarios.

Cooling is a critical feature of the 778645-01, employing a sophisticated forced air circulation mechanism. The chassis maintains an optimal temperature for installed modules by utilizing adjustable fan speeds and a cooling capacity of 25 W per slot, with airflow directed from the bottom to the top. The chassis is equipped with three 140 cfm fans and a high/auto speed switch to ensure effective thermal management, directing exhaust along both sides and the top while allowing intake at the bottom rear. This comprehensive cooling strategy enhances longevity and reliability of internal components, making the PXI-1045 an ideal choice for high-performance automation and control tasks.