Spectrum Analyzer: Precision Instrument for Measuring Electrical Signal Spectral Characteristics
The spectrum analyzer is a high-precision instrument specifically designed for measuring the spectral characteristics of electrical signals. By converting signals into spectrum graphs, users can visually understand the signal’s spectral density and conduct in-depth signal analysis based on frequency distribution.
Operating Principle
At the core of a spectrum analyzer lies the principle of Fourier Transform, a mathematical method that converts a time-domain signal into its frequency-domain representation. Fourier Transform enables the analysis and synthesis of frequency-domain signals. After the test signal undergoes Fourier Transform, the spectrum analyzer receives and processes these signals to ultimately output corresponding spectrum graphs.
SPA-3P6G Spectrum Analyzer
Main Components of a Spectrum Analyzer
Front-End Interface: This interface receives the signal under test, typically composed of antennas or cables. It converts the signal into electrical signals and transmits them to subsequent processing circuits.
Front-End Amplifier Circuit: Includes high-performance amplifiers and low-noise amplifiers with variable gain. Its primary function is to enhance the input signal and improve the signal-to-noise ratio. Through variable gain control, the spectrum analyzer adjusts the amplification factor of the front-end circuit to accommodate different signal strengths and noise levels.
Fast Fourier Transform (FFT) Circuit: The FFT circuit with windowing functions enhances spectrum analysis, reduces leakage and noise, and improves resolution. It can also analyze interference frequencies and noise-related frequencies in the signal.
Digital Signal Processor (DSP): After FFT processing, the DSP further processes the frequency-domain signal, converting it into a visual spectrum graph that provides detailed signal characteristic information to users.
Features and Applications
The spectrum analyzer can provide detailed parameter outputs including peak values, average power, and spectral density, enabling users to comprehensively understand signal characteristics. Its efficient and intuitive signal analysis capabilities have played a crucial role in scientific research and technical applications.
Summary
In conclusion, the spectrum analyzer is a precision testing instrument based on digital signal processing technology. It rapidly and intuitively analyzes signal characteristics, providing robust support for scientific research and technical applications. Its ability to convert signals into visual representations of spectral data makes it indispensable in various fields requiring detailed signal analysis and measurement.
https://www.lisungroup.com/news/technology-news/spectrum-analyzer-precision-instrument-for-measuring-electrical-signal-spectral-characteristics.html

Comments

Post a Comment

Popular posts from this blog

What are the differences of FMVSS 302, UL94 and IEC60695 for flammability test?

Image
The flammability of different materials, such as plastics and other materials used in items such as automobile interiors, electronic devices, and electrical appliances, is evaluated using a number of different standards. Some of these standards are FMVSS 302, UL 94, and IEC 60695. Nevertheless, there are a number of important distinctions between these standards: FMVSS 302 is a specialized standard that was designed for the automotive industry to analyze the flammability of materials used in car interiors. Its purpose is to measure the combustibility of these materials. The UL 94 standard is a more comprehensive regulation that assesses the combustibility of a variety of materials, including plastics, and has applications in a number of different sectors. IEC 60695 is a global standard that is used in the process of assessing the potential for electronic and electrical equipment to catch fire. Testing Procedures The flammability of materials is determined using a variety of testing ...
Read more
Image
125 Grounding Contact Test 125.1 Grounding receptacles having a 5-15R,5-20R，6-13R，6-20R，7-15R，14-15Ror 15-15R configuration are to be subjected to the tests in this section. 125.2 Previously untested devices are to be used. Each device is to be mounted in a flush device box, or as otherwise intended, with its face in a vertical plane. A nonmetallic faceplate is to be installed if intended. A solid 14 AWG (2.1 mm2) copper conductor is to be connected to the receptacle grounding terminal. GNGPL SB1610_AL 125.3 With the receptacle oriented to create the maximum contact displacement (possible distortion of contact affecting its contact ability), the test pin A. Figure 125.1 is to be fully inserted in the grounding contact. A 5 lb (2.27 kg) weight is to be gradually suspended form the test pin 6 inches (152 mm) from the face of the receptacle. The weight is to be applied for 1 minute, following which, the weight is to be removed. The application of the weight is to be repeated with the rece...
Read more
Image
Accessible parts of equipment with standard IEC 62368 General An accessible part of an equipment is a part that can be touched by a body part. For the purposes of dctermining an accessible part, a body part is represented by one or more of the specified test probes. Accessible parts of an equipment can include parts behind a door, panel, removable cover, etc. that can be opened without the use of a tool. Accessible parts do not include those that become accessible when floor standing equipment having a mass exceeding 40 kg is tilted. For equipment intended for building-in or rack-mounting, or for subassemblies and the like for incorporation in larger equipment,accessible parts do not include those that are not accessible when the equipment or subassembly is installed according to the method of mounting or installation specified in the installation instructions. A part is considered accessible if the instructions or markings intended to be followed require that a person phys...
Read more