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
M+P International MP-DSAstd New (GSA discount) SO Analyzer General Data Acquisition MP-DSAstd
M+P International MP-DSApro New (GSA discount) SO Analyzer Advanced Data Acquisition MP-DSApro
M+P International MP-DSAmodal-plus New (GSA discount) Advanced Modal Data Acquisition MP-DSAmodal-plus
M+P International MP-DSAmodal New (GSA discount) Standard Modal Data Acquisition MP-DSAmodal
Rohde & Schwarz FSVR7 New (GSA discount) Real-Time spectrum analyzer, 10 Hz to 7GHz, 40MHz bandwidth, signal and spectrum analyzer, 10 Hz to 7GHz FSVR7
Rohde & Schwarz FSVR40 New (GSA discount) Real-Time spectrum analyzer, 10 Hz to 40GHz, 40MHz bandwidth, signal and spectrum analyzer, 10 Hz to 40GHz FSVR40
Rohde & Schwarz FSVR30 New (GSA discount) Real-Time spectrum analyzer, 10 Hz to 30GHz, 40MHz bandwidth, signal and spectrum analyzer, 10 Hz to 30GHz FSVR30
Rohde & Schwarz FSVR13 New (GSA discount) Real-Time spectrum analyzer, 10 Hz to 13GHz, 40MHz bandwidth, signal and spectrum analyzer, 10 Hz to 13GHz FSVR13
Tektronix SPECMON6B New (GSA discount) Real Time Spectrum Analyzer, 6.2 GHz , swept DPX, density and frequency mask trigger, internal preamplifier, 40 MHz real time bandwidth, pulse analysis suite, removable solid state hard drive, precision frequency reference, 3-year warranty SPECMON6B
Tektronix SPECMON3B New (GSA discount) Real Time Spectrum Analyzer, 3 GHz , swept DPX, density and frequency mask trigger, internal preamplifier, 25 MHz real time bandwidth, pulse analysis suite, removable solid state hard drive, precision frequency reference, 3-year warranty SPECMON3B
Tektronix SPECMON26B New (GSA discount) Real Time Spectrum Analyzer, 26.5 GHz , swept DPX, density and frequency mask trigger, internal preamplifier, 40 MHz real time bandwidth, pulse analysis suite, removable solid state hard drive, precision frequency reference, 3-year warranty SPECMON26B
Tektronix RSA6120B New (GSA discount) REAL TIME SIGNAL ANALYZER; 9 kHz-20 GHz, 40 MHz Acq. BW RSA6120B
Tektronix RSA6114B New (GSA discount) REAL TIME SIGNAL ANALYZER; 9 kHz-14 GHz, 40 MHz Acq. BW RSA6114B
Tektronix RSA6106B New (GSA discount) REAL TIME SIGNAL ANALYZER; 9kHz-6.2 GHz, 40 MHz Acq. BW. RSA6106B
Tektronix RSA5126B New (GSA discount) Real Time Signal Analyzer 1 Hz-26.5 GHz RSA5126B
Tektronix RSA5115B New (GSA discount) Real Time Signal Analyzer 1 Hz-15 GHz RSA5115B
Tektronix RSA5106B New (GSA discount) Real Time Signal Analyzer 1 Hz-6.2 GHz RSA5106B
Tektronix RSA5103B New (GSA discount) Real Time Signal Analyzer 1 Hz-3 GHz RSA5103B
Tenma 72-6696 3rd party pre-owned Not-on-file(other-mfr) Tenma 72-6696
8591C 3rd party pre-owned Not-on-file(other-mfr) 8591C
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Spectrum Analyzers by different manufacturers: