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
HP/Agilent 11970K 3rd party pre-owned Not-on-file(other-mfr) 11970K
HP/Agilent 11970K 3rd party pre-owned Not-on-file(other-mfr) 11970K
HP/Agilent 11970K 3rd party pre-owned Not-on-file(other-mfr) 11970K
HP/Agilent 11970K 3rd party pre-owned Not-on-file(other-mfr) 11970K
IFR Systems (Aeroflex) A-7550 3rd party pre-owned 10 kHz to 1 GHz Spectrum Analyzer A-7550
IFR Systems (Aeroflex) 2309 3rd party pre-owned Not-on-file(other-mfr) 2309
Keysight Technologies Inc. N9020A 3rd party pre-owned MXA Signal Analyzer N9020A
Keysight Technologies Inc. N9020A 3rd party pre-owned MXA Signal Analyzer N9020A
Keysight Technologies Inc. E4445A 3rd party pre-owned PSA Spectrum Analyzer 3 Hz - 13.2 GHz E4445A
Keysight Technologies Inc. E4440A 3rd party pre-owned PSA Spectrum Analyzer 3 Hz - 26.5 GHz E4440A
Marconi 2390A 3rd party pre-owned Not-on-file(other-mfr) 2390A
Rohde & Schwarz FSV7 3rd party pre-owned Signal analyzer 9kHz to 7GHz, -154dBm to 30dBm, Resolutionbandwidth 1Hz to 10MHz, Touchscreen FSV7
Rohde & Schwarz FSU8 3rd party pre-owned Spectrum analyzer 20 Hz - 8 GHz -150 - +30 dBm, RBW 10 Hz - 50 MHz, TFT color display FSU8
Rohde & Schwarz FSU67 3rd party pre-owned Spectrum analyzer 20Hz to 67GHz; -145...+30dBm, RBW 1Hz to 50MHz, TFT color display FSU67
Rohde & Schwarz FSU26 3rd party pre-owned Spectrum analyzer 20 Hz - 26.5 GHz -145 - +30 dBm, RBW 1 Hz - 50 MHz TFT color display FSU26
Rohde & Schwarz FSU26 3rd party pre-owned Spectrum analyzer 20 Hz - 26.5 GHz -145 - +30 dBm, RBW 1 Hz - 50 MHz TFT color display FSU26
Rohde & Schwarz FSP7 3rd party pre-owned Spectrum Analyzer; 9 kHz to 7GHz, R&S,1093.4495.07 plus FSP7
Rohde & Schwarz FSP3 3rd party pre-owned Spectrum analyzer 9 kHz - 3GHz -140 - +30 dBm, RBW 10 Hz - 10 MHz TFT color display FSP3
Rohde & Schwarz FSP-38 3rd party pre-owned 9kHz to 40GHz Spectrum Analyzer FSP-38
Rohde & Schwarz FSH626 New Handheld spectrum analyzer, 100 kHz - 6 GHz, RBW 100 Hz - 1 MHz color LCD display, tracking gen., preamp FSH626
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Spectrum Analyzers by different manufacturers: