National Instruments 778645-01 PXI Chassis

The National Instruments 778645-01 PXI Chassis, an identifying part number for the PXI-1045, is designed to meet a variety of test and measurement needs. It enables smooth trigger routing between devices with customizable trigger routing modules on its backplane. It guarantees flexibility in a variety of settings and applications thanks to its expanded temperature range and two external reference clock BNC connectors.

This chassis integrates an 18-slot PXI backplane with a strong power supply and a well-thought-out structural layout to improve usability. Because of its modular architecture, which ensures high maintainability and a short mean time to repair (MTTR), it maximizes operational efficiency..

The 778645-01's compatibility with both regular CompactPCI products and 5 V and universal PXI-compatible products is one of its primary features. This guarantees configuration freedom for the system, allowing components with or without PXI-specific functionality.

The chassis provides a range of power supply options, with an input voltage range of 100-240 VAC and an operating voltage range of 90-264 VAC. It ensures safe operation under a range of load circumstances by incorporating a 12 A circuit breaker for over-current prevention.

Effective cooling systems are a fundamental feature of the 778645-01 PXI Chassis. With a 25 W cooling capacity and a fan speed that can be adjusted, each slot keeps installed modules at the ideal working temperatures. From the bottom to the top of the chassis, effective cooling is ensured by the direction of airflow from P1 to P2.

The chassis uses three 140 cfm fans and a high/auto speed switch to create forced air circulation, which provides enough cooling for the power supply unit and the modules. To ensure effective heat dissipation, intake is located at the bottom rear of the chassis, while exhaust is channeled along both sides and the top. An integrated fan on the power supply unit's right side and left side of the chassis facilitates air circulation. This layout maximizes cooling effectiveness and extends internal component life.