Frequency characteristic tester

Abstract

The invention discloses a frequency characteristic tester which comprises an upper computer, an FPGA control module, a transmission module, an AD acquisition module and a DA conversion module. The upper computer is provided with a dot frequency signal generation module and a frequency characteristic analysis module. The dot frequency signal generation module generates a dot frequency signal through MATLAB; the frequency characteristic analysis module receives the data of the FPGA module and performs frequency characteristic analysis through MATLAB; the FPGA control module is used for realizingcommunication protocol and data caching of each module; the transmission module is configured as a data transmission channel between the frequency characteristic analysis module and the FPGA controlmodule; the AD acquisition module is configured to convert an analog signal into a digital signal; and the DA conversion module is configured to convert the digital signal into an analog signal. According to the frequency characteristic tester disclosed by the invention, high-speed processing and analysis of data can be realized, waveforms can be visually observed, and data results can be conveniently analyzed.

Description

technical field [0001] The present disclosure relates to the technical field of frequency testing, in particular to a frequency characteristic tester. Background technique [0002] At present, frequency characteristic measuring instruments can be roughly divided into two types: one is traditional equipment, which is prone to failure and complicated to operate, and cannot meet the needs of engineers for on-site testing; the other is a new type of equipment that integrates data acquisition and calculation. , generally imported products, expensive and difficult to maintain. The FPGA (Field-Programmable-Gate-Array) device has rich internal resources and high integration. Users can customize the circuit through programming, and the flexibility is good; through the computer-specific design software, it is convenient to design and input, compile and synthesize, and simulate and test. The predetermined circuit is designed; the chip adopts parallel operation mode, which can quickly ...

AI Technical Summary

Problems solved by technology

[0002] At present, frequency characteristic measuring instruments can be roughly divided into two types: one is traditional equipment, which is prone to failure and complicated to operate, and cannot meet the needs of engineers for on-site testing; the other is a new type of equipment that integrates data acquisition and calculation. , generally imported products, expensive and difficult to maintain

The FPGA (Field-Programmable-Gate-Array) device has rich internal resources and high integration. Users can customize the circuit through programming, and the flexibility is good; through the computer-specific design software, it is convenient to design and input, compile and synthesize, and simulate and test. Design a predetermined circuit; the chip adopts a parallel operation mode, which can quickly complete the calculation of a large amount of data, but the signal in the hardware circuit is output in binary form, which has poor visibility and is not convenient for result analysis

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