05 | Keysight | InfiniiVision 4000 X-Series Oscilloscopes - Data Sheet

What is waveform update rate and why is it important?

As oscilloscopes acquire data, process it, and plot it to the screen, there is inevitable “dead time,” or the time oscilloscopes miss

signals completely. In general, the faster the waveform update rate, the shorter the dead time. The shorter the dead time, the more

likely an oscilloscope is to capture anomalies and infrequent events. This is why it is critical to select an oscilloscope with a fast

waveform update rate.

Figure 3. The 4000 X-Series captures a glitch occurring once in a million

waveform cycles.

One million waveforms per second update rate

If you can’t see the problem, it is hard to troubleshoot it. With an

industry-leading one million waveforms per second update rate,

the InfiniiVision 4000 X-Series gives you the highest probability of

capturing random and infrequent events that you would miss on

an oscilloscope with a lower waveform update rate.

Powered by MegaZoom IV smart memory technology,

the InfiniiVision 4000 X-Series not only lets you see more

waveforms, but it has the uncompromised ability to find the most

difficult problems in your design. Unlike other oscilloscopes,

uncompromised ability means:

– Always-fast, responsive operation

– No slowdown with logic channels on

– No slowdown with protocol decoding on

– No slowdown with math functions turned on

– No slowdown with measurements turned on

Figure 4. Other vendor’s oscilloscope with 50,000 waveforms/second. A long dead time decreases your chances of

capturing infrequent events.

Figure 5. InfiniiVision 4000 X-Series with 1,000,000 waveforms/second. A short dead time increases your chances of

capturing infrequent events.

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