Advanced Features of High-Speed Digital I/O Devices White Paper Series
Updated Sep 20, 2019
This series of white papers describes some of the advanced features of National Instruments high-speed digital I/O devices. These papers examine the advantages of these features and how to implement them on high-speed digital I/O devices.
Double Data Rate
The DDR features of high-speed digital I/O devices help you achieve higher-speed transfers with slower designs and allow for a smaller IC package.
With hardware comparison, an NI 655x can verify that a device under test returns the correct response data under different use cases and stimulus data.
Because of factors such as setup time and hold time in high-speed digital communications, you may need to delay the data from the edge of the clock. This document examines the different settings and parameters that affect data delay.
You can link and loop multiple waveforms together in a generation operation using a script. A script is a series of instructions that indicates how waveforms saved in the onboard memory should be sent to the device under test.
NI digital waveform generator/analyzers use multiple megabytes of onboard memory to acquire and generate data. With onboard memory, you can achieve much higher data rates than possible by streaming data from system memory across the PCI bus.
Timing is an essential feature in all digital communication. Even the smallest violation in timing could cause incorrect data to be read or transmitted. Learn how to clock your data and import and export clocks, triggers, and events in this white paper.