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
Rohde & Schwarz FSH6 3rd party pre-owned Handheld spectrum analyzer 100 kHz - 6 GHz, RBW 100 Hz -1 MHz, LCD color display, preamplifier FSH6
Rohde & Schwarz FSH6 3rd party pre-owned Handheld spectrum analyzer 100 kHz - 6 GHz, RBW 100 Hz -1 MHz, LCD color display, preamplifier FSH6
Rohde & Schwarz FSH323 New Handheld spectrum analyzer 100 kHz - 3 GHz, RBW 100 Hz - 1 MHz color LCD display, tracking gen., preamp FSH323
Rohde & Schwarz FSH313 New Handheld spectrum analyzer 100 kHz - 3 GHz, RBW 1 kHz - 1 MHz LCD color display, tracking gen. FSH313
Rohde & Schwarz FSH3 New Handheld spectrum analyzer 100 kHz - 3 GHz, RBW 100 Hz - 1 MHz LCD color display, Preamplifier FSH3
Rohde & Schwarz FSH3 3rd party pre-owned Handheld spectrum analyzer 100 kHz - 3 GHz, RBW 100 Hz - 1 MHz LCD color display, Preamplifier FSH3
Rohde & Schwarz FSH18 New Handheld Spectrum Analyzer 10MHz - 18GHz, RBW 100Hz - 1MHz, LCD color display FSH18
Rohde & Schwarz, Inc. FSP13 3rd party pre-owned Not-on-file(other-mfr) FSP13
Rohde & Schwarz, Inc. FSH313 3rd party pre-owned Handheld spectrum analyzer 100 kHz - 3 GHz, RBW 1 kHz - 1 MHz LCD color display, tracking gen. (P/N 1145.5850.13) FSH313
Rohde & Schwarz, Inc. FSH313 3rd party pre-owned Handheld spectrum analyzer 100 kHz - 3 GHz, RBW 1 kHz - 1 MHz LCD color display, tracking gen. (P/N 1145.5850.13) FSH313
Rohde & Schwarz, Inc. FSH3-TV 3rd party pre-owned TV analyzer FSH3-TV
Rohde & Schwarz, Inc. FSH3 3rd party pre-owned Handheld spectrum analyzer 100 kHz - 3 GHz, RBW 100 Hz - 1 MHz LCD color display, Preamplifier (P/N 1145.5850.03) FSH3
Rohde & Schwarz, Inc. FSH 313 3rd party pre-owned Not-on-file(other-mfr) FSH 313
Rohde & Schwarz, Inc. FSAC 3rd party pre-owned Not-on-file(other-mfr) FSAC
Rohde & Schwarz, Inc. FS300 3rd party pre-owned Spectrum analyzer 9 kHz - 3 GHz -115 - +33 dBm, RBW 200Hz - 1 MHz TFT color display (P/N 1147.0991.03) FS300
Rohde & Schwarz, Inc. FS300 3rd party pre-owned Spectrum analyzer 9 kHz - 3 GHz -115 - +33 dBm, RBW 200Hz - 1 MHz TFT color display (P/N 1147.0991.03) FS300
Tektronix WCA380 3rd party pre-owned DC-8GHZ, RT COMM ANAL WCA380
Tektronix RSA3408A 3rd party pre-owned Not-on-file(other-mfr) RSA3408A
Tektronix 2782 3rd party pre-owned 100 Hz-33 GHz Spectrum Analyzers 2782
Tektronix 2782 3rd party pre-owned 100 Hz-33 GHz Spectrum Analyzers 2782
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Spectrum Analyzers by different manufacturers: