Spectrum Analyzer


Overview:

Spectrum analyzer is a device used to examine the spectral composition of some electrical, acoustic, or optical waveform. Often, it measures the power spectrum. Spectrum analysis is concerned primarily with characterizing signal components (such as its spurious and harmonic components, modulation, noise, etc.) Spectrum analyzer is used to locate frequencies where microwave energy exists.

There are analogue and digital spectrum analyzers:

  • An analogue spectrum analyzer uses either a variable bandpass filter whose mid-frequency is automatically tuned (shifted, swept) through the range of frequencies of which the spectrum is to be measured or a superheterodyne receiver where the local oscillator is swept through a range of frequencies.
  • A digital spectrum analyzer uses the Fast Fourier Transform (FFT), a mathematical process that transforms a waveform into its frequency components in the spectrum. As a result, computer programs can compute such transforms, and makes audio processing easier. FFTs have applications in much wider fields.

Spectrum analyzer is used in the following areas of measurement analysis:

  • Distortion measurements
    • Distortion in amplifiers
    • Third order intercept measurement
    • Distortion in mixers
    • Distortion in oscillators
  • Modulation measurements
    • Amplitude modulation (AM) measurement
    • Frequency modulation (FM) measurement
  • Pulsed RF measurements
  • Noise measurements
    • Noise figure (NF) measurement
  • Electromagnetic interference (EMI) measurement

Important spectrum analyzer products:

Manufacturer Model Condition Description Specs
8591C 3rd party pre-owned Not-on-file(other-mfr) 8591C
8591C 3rd party pre-owned Not-on-file(other-mfr) 8591C
8591C 3rd party pre-owned Not-on-file(other-mfr) 8591C
8591C 3rd party pre-owned Not-on-file(other-mfr) 8591C
8591C 3rd party pre-owned Not-on-file(other-mfr) 8591C
8591C 3rd party pre-owned Not-on-file(other-mfr) 8591C
8591C 3rd party pre-owned Not-on-file(other-mfr) 8591C
8591C 3rd party pre-owned Not-on-file(other-mfr) 8591C
8591C 3rd party pre-owned Not-on-file(other-mfr) 8591C
8591C 3rd party pre-owned Not-on-file(other-mfr) 8591C
8591C 3rd party pre-owned Not-on-file(other-mfr) 8591C
8591C 3rd party pre-owned Not-on-file(other-mfr) 8591C
Advantest U3751 3rd party pre-owned Not-on-file(other-mfr) U3751
Advantest U3661 3rd party pre-owned Microwave Spectrum Analyzer U3661
Advantest R9211B 3rd party pre-owned FFT Servo Spectrum Analyzer R9211B
Advantest R4131D 3rd party pre-owned 10 kHz to 3.5GHz,Spectrum Analyzer R4131D
Advantest R3465 3rd party pre-owned 9kHz to 8GHz Spectrum Analyzer R3465
Advantest R3465 3rd party pre-owned 9kHz to 8GHz Spectrum Analyzer R3465
Advantest R3371A 3rd party pre-owned 100Hz to 26.5GHz Spectrum Analyzers R3371A
Advantest R3273 3rd party pre-owned Not-on-file(other-mfr) R3273
Page:  1  2  3  4  5   6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41

Spectrum Analyzers by different manufacturers: