Back to Basics: Sequence Mode

Figure 1: Sequence mode enables fast trigger rates
and optimizes memory usage by
ignoring dead time.

Now and again, an oscilloscope user may need to capture either a large number of fast pulses in quick succession, or a small number of events separated by relatively long periods of time. Either of these scenarios are challenging with typical acquisition modes. Fortunately, most modern oscilloscopes offer what we call "sequence mode" (other oscilloscope makers refer to similar acquisition modes as "fast-frame" or "segmented memory" mode).

Back to Basics: Random Interleaved Sampling

Figure 1: This image illustrates the
general principle underlying RIS.

Modern oscilloscopes come with all kinds of bells and whistles, and users might be tempted to invoke them for all sorts of situations. But not every whiz-bang feature of an oscilloscope is applicable all the time. Rather, some features are great in the right applications but disastrous in others.

Oscilloscope Basics: Sampling Rate

In a recent overview post on oscilloscope banner specifications,
one of the topics covered is sampling rate. Let's do a somewhat deeper dive on that topic and look at what sampling rate means to oscilloscope users.

An Overview of Oscilloscope Banner Specs

"Banner specs" is a term that oscilloscope makers use often. If you've ever met with one of the vendors' salespeople, you're likely to have heard it. But what are banner specs and what do they mean to you?

Oscilloscope Basics: Triggering

At some point, it's likely you've had the experience of capturing a waveform on your oscilloscope only to see a wildly unstable trace displayed on the screen. Chances are that you hadn't adjusted the triggering correctly. Let's take a brief look at what triggering is and why it's important in an oscilloscope. Trigger modes determine when the oscilloscope acquires and what is displayed.

The Making of 12-Bit Scope Hardware

In many applications, the accuracy of a true 12-bit oscilloscope is not only desirable, but necessary. Going forward, this will become the case more and more often. When choosing one, it's a good idea to peek under the covers and gain a little insight into how the instrument operates. Having discussed in an earlier post the advantages of oscilloscopes with 12-bit vertical resolution, let's look at the ways in which that resolution is accomplished in hardware.

Oscilloscope Basics: Oscilloscope Bandwidth

Among the most important basic specifications of a digital oscilloscope is its bandwidth. Knowing a bit about bandwidth and the influences on the specification can be very helpful in selecting the right oscilloscope for your application. This post will cover some fundamental aspects of oscilloscope bandwidth.