Multifunctional virtual signal analyzer

With the design concept of "low cost and high performance", with the help of the concept of virtual instruments and high-speed digital signal processing algorithms, traditional function generators, oscilloscopes, data recorders, frequency meters, spectrum analyzers, and filter design and simulations are integrated The functions are highly integrated and the unified platform is easy to use.

The software environment supports four modes: sound card, USB module, serial port capture and virtual simulation. The sound card mode can use the computer's sound card to complete the analysis and processing of signals within the audio range; the USB module can complete the analysis and processing of signals within the bandwidth allowed; the serial port capture can directly capture the data of the serial port and perform the capture The data is analyzed and processed; the simulation mode uses software simulation to realize all functions, which facilitates teaching and theoretical demonstration.

Open software communication protocol, you can add your own hardware to our software environment according to the protocol, and use all analysis functions. The agreement is divided into: learning version and commercial version.

The USB module provides a secondary development kit; it also provides some algorithm libraries in our software to facilitate better secondary development of products.

Function generator:

Supports the generation of "sine wave", "triangular wave", "rectangular wave", "upper sawtooth wave", "lower sawtooth wave", "white noise" and "synthetic waveform", and provides adjustment functions for peak value, frequency and output phase difference .

Wave file generation:

Waveform file output can support "sine wave", "triangular wave", "rectangular wave", "upper sawtooth wave", "lower sawtooth wave", "white noise" and "synthetic waveform", providing peak value, frequency and output phase difference The adjustment function supports output in the form of wav, txt, hex and mif files.

Oscilloscope/Spectrum Analyzer:

It can work in four modes: "sound card", "USB module", "emulation" and "serial port capture". Supports simultaneous display of any multiple images to facilitate diverse analysis of waveforms; supports hardware and software triggering of input waveforms; supports interpolation and equivalent sampling of input waveforms; supports "addition", "subtraction" and "multiplication" of input waveforms Synthesis; supports adding Rectangle, bartlett, triangular, cosine, hanning, bartlett_hanning, hamming, blackman, blackman_Harris, tukey, Nuttall, FlatTop, Bohman, Parzen, Lanczos, kaiser, gauss, dolph_chebyshev 18 kinds of windows to the input waveform; supports adding 18 kinds of windows to the input waveform; Filter processing; supports "Lissajous figure", "amplitude frequency", "phase frequency", "logarithmic amplitude frequency", "autopower spectrum", "logarithmic autopower spectrum", and "autocorrelation" of the input waveform " and "cross-correlation" analysis; supports the "amplitude frequency", "phase frequency", "log amplitude frequency", "auto power spectrum", and "log auto power spectrum" of the input waveform in the logarithmic coordinate system " analysis.

Window properties:

Supports viewing the amplitude-frequency characteristic diagrams of 18 window functions including Rectangle, bartlett, triangular, cosine, hanning, bartlett_hanning, hamming, blackman, blackman_Harris, tukey, Nuttall, FlatTop, Bohman, Parzen, Lanczos, kaiser, gauss, and dolph_chebyshev, as well as different windows Make comparisons.

Data logger:

The data recorder can continuously record the collected data from the sound card or USB module and store it into a file in wav format; it also supports direct import of wav files; and supports browsing of global data.

Filter design (QFilter):

Supports the design of IIR and FIR filters, and the designed filters can be used for filtering processing of collected data and theoretical demonstration of simulation modes; among them, IIR supports "Butterworth", "Chebyshev I", and "Chebyshev II" , "elliptical" type filter design; FIR supports arbitrary amplitude frequency sampling method and Rectangle, bartlett, triangular, cosine, hanning, bartlett_hanning, hamming, blackman, blackman_Harris, tukey, Nuttall, FlatTop, Bohman, Parzen, Lanczos, kaiser , gauss and dolph_chebyshev window function method design; supports saving designed images; saves the designed H(z) coefficients and zero-pole points into txt files for use in other design systems; saves the designed parameters into fdd format , easy to open later and used for waveform processing and simulation.

Development Kit:

Provides a Dll dynamic link library, which can accept data from the USB module and perform corresponding algorithm processing on the collected data.