Pxi platform power and cooling – national instruments education level professional

The PXI Express specification requires that a minimum of 30 W of power be available to each peripheral slot and that each slot be able to dissipate that same amount of heat. Chassis designed by NI have exceeded these requirements historically by providing 38 W of power and cooling in every slot. Today, some NI chassis can dissipate and cool more than 38 W in either some or all peripheral slots to support new PXI modules that either require additional cooling to function or recommend additional cooling to achieve full capability. These chassis vary in total power, so system power budgeting is always recommended.

* The PXIe-1095 offers two hot-swappable power supplies. higher education level descriptors To dissipate 82 W of power in every slot, both power supplies are required. For applications consisting entirely of modules dissipating up to 38 W each, only one power supply is required – a second power supply is redundant to such applications.

For several PXI modules, NI recommends the use of a chassis with ≥ 58 W slot cooling capacity to achieve full capability. In general, increased cooling will benefit all existing PXI modules by reducing the temperature of onboard components, helping to prolong device longevity.

The PXIe-1095 chassis offers 82 W of power and cooling in every slot, more than double that of previous NI PXI Express chassis. This specification is valid for a chassis filled with modules each requiring 82 W of power dissipation. More power and cooling in every slot allows higher power budgets for PXI modules and makes it possible for the PXI platform to continually serve challenging, high-performance applications.

In addition to 82 W of power and cooling in every slot, the 18-slot chassis offers several other key features like a second, quieter 38 W cooling profile, two hot-swappable power supplies, an optional timing and synchronization upgrade, and up to 24 GB/s PCI Express Gen 3 theoretical system bandwidth.

The PXIe-1095 offers two distinct, software-selectable cooling profiles: 38 W and 58 W / 82 W. The lower cooling profile tunes the fan algorithm to cool a chassis full of modules each requiring up to 38 W of power dissipation, and the higher cooling profile increases the fan speeds to cool a chassis full of modules each requiring up to 58 W or even 82 W of power dissipation. define education level All modes set are persistent across system reboots. The chassis may increase its fan setting from Auto to High or from the 38 W profile to the 58 W / 82 W profile based on requests from certain modules.

The PXIe-1095’s lower 38 W cooling profile features a significant reduction in fan noise, delivering a 13 dB improvement compared to the previously released PXIe-1085 chassis and making it one of NI’s quietest PXI Express chassis in this mode. The PXIe-1084 has even further improved acoustics in its 38 W cooling mode. secondary level education in nepal You can take advantage of the improved acoustics in the 38 W cooling profile mode with any previously released PXI Express or PXI hybrid modules. Note that 10 dB here translates to a perceived noise difference of 2X.

The chassis offers two hot-swappable, highly serviceable 1,200 W power supplies. To dissipate 82 W of power in every slot, both power supplies are required. For applications consisting entirely of modules dissipating up to 38 W each, only one power supply is required—a second power supply is redundant to such applications.

With the PXIe-1095, a new option is the ability to add a timing and synchronization upgrade at time of purchase. The upgrade includes an integrated oven-controlled crystal oscillator (OCXO) as well as external clock and trigger routing. In this way, you can upgrade your system’s clock stability and accuracy without having to sacrifice the system timing slot. However, this upgrade option is not ideal for every application, because PXI timing and synchronization modules offer several more features that this upgrade option is incapable of, like star triggers, differential star triggers, or others through software like accounting for cable length skew correction in multichassis systems.