Delta-Time Accuracy: The Good, The Bad, and The Worst Case

When testing high-speed microprocessor designs that incorporate next-generation bus architectures such as DDR II and RapidIO, or testing high-speed serial data communication systems such as Fibre Channel, SONET, Gigabit Ethernet and InfiniBand, design engineers need to see all the details of their high-speed signals. Their test and measurement equipment must provide a clear and accurate display of all the waveform activity, including jitter. How accurately a digital oscilloscope can measure the time interval between two events is an important factor when examining these high-speed signals. To ensure reliable time measurements, an oscilloscope should provide exceptional delta-time measurement accuracy.

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55W-13565-1, 10/2002, 11/08/2002