Complete Spectrum Analyzer Buying Guide

What Is a Spectrum Analyzer?

A spectrum analyzer is a tool used to visualize and analyze the spectral content of signals. It accomplishes this by measuring the magnitude of the input signal versus its frequency over the entire frequency range.

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Think of this as a means to see a signal's "frequency fingerprint." This fingerprint will help you determine the signal power of an instrument and how that signal makes up different frequency components.

Spectrum analyzers usually consist of a display, a sweep generator, and a filter.

• The display shows the strength of the signal at each frequency. You can then determine the contents of a signal and identify any problems that may be present.
• The sweep generator produces a signal that sweeps across the desired frequency range.
• The filter only allows the portion of the signal within the desired range to pass through to the display. This process works in conjunction with digital signal processing.

Thanks to technological advances, modern spectrum analyzers are smaller and more affordable than ever. They are also more accurate and have more features than their predecessors.

Whether you are an engineer or a hobbyist experimenting with electronics, a spectrum analyzer is a valuable tool to have.

An engineer would use a spectrum analyzer to run tests on electronic equipment like cell phones, radios, and TV towers to ensure they function as intended with no interference from other devices. A hobbyist might use a spectrum analyzer to check the quality of an audio signal or track down interference sources.

Spectrum Analyzers vs. Oscilloscopes

While spectrum analyzers and oscilloscopes are both essential for understanding the behavior of electronic signals, they work in different ways.

• Oscilloscopes measure the shape or amplitude of a signal over time. They are best suited for analyzing time-varying signals, such as those produced by transistors and motors. They also observe the rise and fall of voltage levels and the shape of waveforms.

Input power is the maximum power that can be safely supplied to the device under test without damaging the equipment. Input power is not the same as the power requirements of the network analyzer, which is the power required to operate the device.

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Input power directly impacts the types of devices tested. If you need to test a device with high power consumption, you will need a network analyzer with high input power.

Typically, watts (W) or milliwatts (mW) express a network analyzer's input power. The most common input power levels are 1 W, 2.5 W, and 5 W.

Network analyzers require a certain amount of input power to make accurate measurements. The amount of input power required depends on the impedance of the device under test and the amount of power needed to run the test.

In general, higher-impedance devices require more input power. For example, a 50-ohm device would require less input power than a -ohm device. Choosing a network analyzer with the correct input power is essential to ensure that your equipment does not damage during testing and gives you accurate results.

Input power is most important for USB-powered devices as not all have equal current capabilities. For instance, if you have a device that requires more than 500mA, you need to check that the analyzer can provide this.

Some USB 3.0 ports can provide up to 900mA, but many only provide 500mA. If in doubt, always check with the device manufacturer you are testing to determine the maximum input power required.

Make sure you to not overlook the effects of cable losses when choosing a network analyzer. Cable losses can reduce the amount of power delivered to the device under test, so you want to select an analyzer with enough input power to offset these losses.

Contact us to discuss your requirements of arbitrary waveform generators china. Our experienced sales team can help you identify the options that best suit your needs.