There are many different types of oscilloscopes, but they all have one thing in common: they allow you to see a signal over time. This makes them very useful for analyzing and troubleshooting circuits.

Oscilloscopes usually have two main parts:

1. Visualization. This LED or LCD screen is responsible for displaying the signal.
2. The controller. This allows you to control the various settings of the scope.

Most oscilloscopes have two channels, which means they can display two different signals at the same time. Some higher-end models have eight or more channels.

The main specifications of an oscilloscope are bandwidth, sample rate, and the number of channels. We will look at these three specifications in detail later in the article. When choosing an oscilloscope, it is important to consider what you need. Make sure the oscilloscope has enough bandwidth and sample rate for your purposes. And if you need to measure multiple signals simultaneously, you will need an oscilloscope with enough channels.

It can be daunting to understand what you need when choosing the right oscilloscope! So what are the most important things to look for in an entry-level oscilloscope? Let's look at four things to look for when buying an oscilloscope:

1. Make sure that the digital scope has enough bandwidth for your needs. Bandwidth is the most important specification to consider when choosing an oscilloscope. Bandwidth defines the maximum frequency that the scope can accurately capture. The higher the bandwidth, the more expensive the scope will be.
2. Consider what sampling rate you need. The sample rate defines how many samples per second the scope can take. Meaning, that the higher the sampling rate, the more detail you will be able to see in your waveform. Again, the trade-off here is that a higher sample rate will cost more money.
3. Decide how many channels you will need to have. The number of channels defines how many signals the scope can display simultaneously. If you only need to measure one signal at a time, then a single-channel scope will be enough. However, if you need to measure multiple signals simultaneously, you will need a scope with more channels.
4. Check if the digital scope comes with any built-in waveform signal generators. Waveform generators allow you to create signals to test your circuits. Not all entry-level oscilloscopes come with waveform generators, so if this is a feature you need, check for it before buying.

Oscilloscopes are expensive because they use many electronic components and require a lot of precision in their manufacture. They also have to be able to accurately measure high-speed signals, which requires high bandwidth. For example, a scope with a bandwidth of 100 MHz can cost several thousand dollars. A lower-end scope with a bandwidth of 20 MHz may only cost a few hundred dollars.

The vertical sensitivity range defines the minimum and maximum voltage the scope can measure. The horizontal range defines the minimum and maximum time interval that the scope can measure. This is important because it defines the level of detail that the oscilloscope can capture.

For example, a scope with a horizontal range of 1 ns can measure signals with a time resolution of 1 nanosecond. This is important for measuring high-speed signals.

As we have looked at, oscilloscopes can differ significantly in their ranges and specifications. It is important to know what basic parameters you need if you are in the market for a budget oscilloscope. This will ensure that you get the best scope for your budget. Once you have these things in mind and know what oscilloscope you are looking for, visit Keysight Used Equipment to see a wide range of oscilloscopes to find the right one to fit your needs.