Pxie-8821; Description; Functional Overview - National Instruments PXIe-8821 User Manual

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The demanding timing and synchronization requirements of instrumentation systems are met

by the integrated features of PXI Express. Not only are the trigger bus, 10 MHz system

reference clock, and star trigger bus available in PXI retained by PXI Express, but new timing

and synchronization features that include a 100 MHz differential system reference clock for

the synchronization of multiple modules and three differential star trigger buses for the

distribution of precise clock and trigger signals have been added. Differential timing and

synchronization signals provide PXI Express systems with increased noise immunity and the

ability to transmit clock signals at higher frequencies.

PXIe-8821

The PXIe-8821 PXI Express/CompactPCI Express embedded controller is a high-performance

PXI Express/CompactPCI Express-compatible system controller. The PXIe-8821 controller

integrates standard I/O features in a single unit by using state-of-the-art packaging. Combining

a PXIe-8821 embedded controller with a PXI Express-compatible chassis, such as the

PXIe-1085, results in a fully PC-compatible computer in a compact, rugged package.

™

The PXIe-8821 has an Intel

Core

i3 4110E processor (2.6 GHz dual-core processor), all the

standard I/O, and a 320 GB (or larger) hard drive.

The standard I/O on each module includes one DisplayPort video, one RS-232 serial port, two

Hi-Speed USB ports, two SuperSpeed USB ports, one Gigabit Ethernet, a reset button, and a

PXI trigger.

The PXIe-8821 is a modular PC in a PXI Express 3U-size form factor. The following figure is

a functional block diagram of the PXIe-8821. Following the diagram is a description of each

logic block shown.

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