Spectrum Analyzers

Servicing or repairing electrical equipment or systems requires professional knowledge as well as professional instruments. Analyzing the parameters of signals that a device emits, receives or transfers will allow you to establish the condition of a gadget. In such situations, a special receiver is required to analyze the signals it detects.

Spectrum analyzers are special testing devices that are used in detecting and analyzing electromagnetic signals. 

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Spectrum Analyzers

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The signal that is being converted and displayed on the screen is always electric, however, it is possible to analyze other types of signals like sound (vibration) and light waves. They require a special probe with a converter that is able to recognize the desired signal and transform it into a respective electrical signal prior to sending it to the analyzer. If the signal is received by this device, its amplitude is measured against its frequency. A spectrum analyzer is capable of measuring and displaying a variety of parameters, however, there are three basic measurements that are made more commonly than others. Modulation is measured to establish if the information embedded in the signal is being transferred correctly. Noise is an important parameter because it determines the actual “amount” of your signal that is received by other stations. Distortion determines if there are any interferences with other signals. If two signals are cross-interfering, both of them will be distorted and therefore will be useless.

There are two types of signal analyzers. The first one is called FFT. It receives a time-domain-based signal over a period of time, digitizes it, and performs necessary calculations and mathematical operations to transform it into a frequency-domain signal. The second type is called swept-tuned. These devices scan a great range of frequencies and display all necessary parameters. Find the gadget you need on Mega Depot!