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
Anritsu S332D 3rd party pre-owned Cable and Antenna Analyzer, 25 MHz to 4.0 GHz, with built in DTF, Spectrum Analyzer, 100 kHz to 3.0 GHz S332D
Anritsu S332D 3rd party pre-owned Cable and Antenna Analyzer, 25 MHz to 4.0 GHz, with built in DTF, Spectrum Analyzer, 100 kHz to 3.0 GHz S332D
Anritsu S332D 3rd party pre-owned Cable and Antenna Analyzer, 25 MHz to 4.0 GHz, with built in DTF, Spectrum Analyzer, 100 kHz to 3.0 GHz S332D
Anritsu S332D 3rd party pre-owned Cable and Antenna Analyzer, 25 MHz to 4.0 GHz, with built in DTF, Spectrum Analyzer, 100 kHz to 3.0 GHz S332D
Anritsu S332D 3rd party pre-owned Cable and Antenna Analyzer, 25 MHz to 4.0 GHz, with built in DTF, Spectrum Analyzer, 100 kHz to 3.0 GHz S332D
Anritsu S332D 3rd party pre-owned Cable and Antenna Analyzer, 25 MHz to 4.0 GHz, with built in DTF, Spectrum Analyzer, 100 kHz to 3.0 GHz S332D
Anritsu S332D 3rd party pre-owned Cable and Antenna Analyzer, 25 MHz to 4.0 GHz, with built in DTF, Spectrum Analyzer, 100 kHz to 3.0 GHz S332D
Anritsu S332D 3rd party pre-owned Cable and Antenna Analyzer, 25 MHz to 4.0 GHz, with built in DTF, Spectrum Analyzer, 100 kHz to 3.0 GHz S332D
Anritsu S332D 3rd party pre-owned Cable and Antenna Analyzer, 25 MHz to 4.0 GHz, with built in DTF, Spectrum Analyzer, 100 kHz to 3.0 GHz S332D
Anritsu S332C 3rd party pre-owned Site Master, 25 MHz to 4000 MHz, Built in DTF, Built-in Spectrum Analyzer 100 kHz to 3000 MHz S332C
Anritsu S331D 3rd party pre-owned Cable and Antenna Analyzer, 25 MHz to 4.0 GHz, with built in DTF S331D
Anritsu S331D 3rd party pre-owned Cable and Antenna Analyzer, 25 MHz to 4.0 GHz, with built in DTF S331D
Anritsu S331D 3rd party pre-owned Cable and Antenna Analyzer, 25 MHz to 4.0 GHz, with built in DTF S331D
Anritsu S331D 3rd party pre-owned Cable and Antenna Analyzer, 25 MHz to 4.0 GHz, with built in DTF S331D
Anritsu S331B 3rd party pre-owned Site Master, 25 MHz to 3300 MHz, Built in DTF S331B
Anritsu S331B 3rd party pre-owned Site Master, 25 MHz to 3300 MHz, Built in DTF S331B
Anritsu S251C 3rd party pre-owned Site Master Two-port, 625 MHz to 2500 MHz, Built in DTF S251C
Anritsu S114C 3rd party pre-owned Site Master, 2 MHz to 1600 MHz, Built-in DTF, Built-in Spectrum Analyzer 100 kHz to 1600 MHz S114C
Anritsu S114C 3rd party pre-owned Site Master, 2 MHz to 1600 MHz, Built-in DTF, Built-in Spectrum Analyzer 100 kHz to 1600 MHz S114C
Anritsu MT8222A 3rd party pre-owned BTS Master Cable and Antenna Analyzer (10MHz - 4 GHz) Spectrum Analyzer (100KHz - 7.1 GHz) Power Meter (100KHz - 7.1 GHz) MT8222A
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Spectrum Analyzers by different manufacturers: