Regarding the spectrum analyzer, it has many different names and names, such as frequency domain oscilloscope, tracking oscilloscope, harmonic analyzer, etc. In fact, it refers to the spectrum analyzer, which is a kind of spectrum analyzer that can check the electrical signal spectrum. structural tool. It is used to measure signal distortion, modulation, spectral purity, frequency stability and intermodulation distortion. You can measure certain circuits, such as amplifiers and filters. This parameter is a general-purpose electronic measuring device. It can also be called frequency domain oscilloscope, oscilloscope track, oscilloscope analyzer, analyzer or Fourier analyzer for harmonic frequency characteristics. Modern spectrum analyzers can display the analysis results of analog or digital electrical signals and can analyze all frequency bands from low bandwidth to below 1 Hz. Automated test systems can be easily created if digital circuits and microprocessors work within the tool's memory and computing capabilities when determining standard interfaces.
Are there different types of spectrum analyzers?
There are two types of spectrum analyzers, the type being determined by the method used to obtain the signal spectrum. A swept-tuned spectrum analyzer uses a superheterodyne receiver to downconvert a portion of the input signal spectrum (using a voltage controlled oscillator and mixer) to the center frequency of the bandpass filter. A voltage-controlled oscillator using a superheterodyne architecture is swept over a range of frequencies, supporting the assumption of the full frequency range of the instrument. Fast Fourier Transform (FFT) analyzers compute the discrete Fourier transform (DFT), a mathematical process that converts the waveform of an input signal into its spectral components.
Can a spectrum analyzer get real-time results?
Yes, real-time spectrum analyzers use a hybrid approach where the input signal is first down-converted to lower frequencies using superheterodyne techniques and then analyzed using FFT techniques.
When and Where Should I Use a Benchtop Spectrum Analyzer Instead of a Handheld Spectrum Analyzer?
Benchtop spectrum and signal analyzers provide excellent specifications and measurement application software, while handheld spectrum analyzers are more suitable for field engineers.
Can a spectrum analyzer be used to demodulate a signal normally?
By combining a spectrum analyzer or signal analyzer with the Agilent 89600 VSA flexible modulation analysis software or measurement application software, you can demodulate a wide range of standard and common digital signals and formats.
How to choose the average detection method (averagetype): power? logpower? voltage?
logpower logarithmic power averaging: also known as videoaveraging, this averaging method has a low noise floor and is suitable for low-level continuous wave signal testing.
However, there will be certain errors for "noise-like" signals, such as wideband modulated signals w-cdma and so on.
Power averaging: Also known as rms averaging, this averaging method is suitable for measuring the total power of "noise-like" signals (eg cdma).
Voltage Averaging: This averaging method is suitable for observing the rise and fall time measurements of AM signals or pulse modulated signals.
What is the role of the trace source (tg)?
Tracking sources are one of the common options on spectrum analyzers.
When the output of the tracking source passes through the input port of the DUT, and the output of the device is connected to the input port of the spectrum analyzer, the spectrum analyzer and the tracking source form a complete adaptive frequency sweep measurement system.
The frequency of the signal output by the tracking source precisely tracks the tuning frequency of the spectrum analyzer.
With the optional tracking source, the spectrum analyzer can be used for simple scalar network analysis to observe the excitation response characteristic curve of the DUT, such as the frequency response and insertion loss of the device.
Dongguan Metalwork Technology Co., LTD. , https://www.dgdiecastpro.com