When configuring a PXI system, a key factor to consider is total power consumption, which ensures proper system performance and guarantees the safety of the equipment.
A power budget is a measure of how much power is consumed by a PXI chassis and the components within the chassis. The budget takes into account the capacity of the power supply in the PXI chassis at a given temperature, as well as the power requirements of all components in the system. Efficiency is also a key element of the budget in order to compensate for real-world performance of electrical equipment and variations with time.
This application note discusses the importance of performing a power budget calculation on a PXI system. A power budget will predict the behavior of operation before the system is used. Oftentimes, unexplained reboots or an inoperable system can be avoided by better understanding the power consumption. This paper describes common use cases on how a power budget is helpful, as well as methods and considerations for properly determining the power budget. The goal is to verify that the PXI equipment will function properly and to document power consumption for future use.
Overall, this paper addresses the following questions:
- Why is it important to determine a power budget before configuring your system?
- How do you determine how much power your system requires?
- What considerations should you make when setting up your system?
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http://zone.ni.com/devzone/cda/tut/p/id/3243
