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Transfer Function Analysis

Techniques: Frequency Response, Transfer Function, Spectrum Analysis, Correlation, Swept-Sine Analysis, Harmonic Analysis, Impedance
Applications:   Acoustic (Microphones, Headphones, Loudspeakers, Sonar), Mechanical (Vibration, Actuators, Servo-systems, Accelerometers, Transducers), Optical (Photodetectors)

Frequency Response Analysis (also referred to as Transfer Function Analysis or Spectrum Analysis) measures the output spectrum of a system relative to a stimulus, and is used to characterize the dynamics of the system under test. The technique measures the magnitude and phase relationship between output and input waveforms as a function of frequency. The input signals may be from a wide range of sensors including acoustic (microphones/sonar), mechanical (accelerometers/displacement transducers), optical (photodetectors), and electronic/electrical (amplifiers, filters).
Applications that make use of this powerful technique include - electrochemical impedance spectroscopy (EIS), materials analysis, aerospace control system design, electronic amplifier design, power supply design, and vibration analysis.

The 1260A Impedance Analyzer includes two voltage analyzers and a current analyzer and is able to perform frequency response and impedance analysis over a very wide frequency range
  • 10 µHz to 32 MHz frequency range (frequency response and impedance measurements)
  • High accuracy measurements 0.1%, 0.1⁰
  • 1 in 65,000,000 frequency resolution for analysis of high-Q systems – e.g. crystal resonances
  • Deep 130 dB dynamic range (auto-ranging)
  • 2, 3, 4 terminal measurements
  • ±41.95 V DC bias

The 1255B Frequency Response Analyzers is related to 1260A but measure voltage and transfer function (no current or impedance measurements).
  • 1255B 10 µHz to 1 MHz frequency range
  • High accuracy measurements 0.2%, 0.2⁰
  • 1 in 65,000,000 frequency resolution for analysis of high-Q systems
  • Deep 130 dB dynamic range (auto-ranging)
  • ±41.95 V DC bias

The 1250E Frequency Response Analyzer is a two voltage channel system that measures voltage and frequency response over a wide range of voltage.
  • 10 µHz to 65.535 kHz frequency range
  • 300 V rms voltage input range for high voltage applications
  • 1 in 65535 frequency resolution
  • Harmonic analysis (up to 16 harmonics)
  • Modulator/demodulator and synchronizer options
  • ±10.23 V DC bias

The 1253A Frequency Response Analyzer is a two voltage channel system that measures voltage and frequency response over a wide range of voltage.
  • 1 mHz to 20 kHz frequency range
  • Built in synchronizer and modulator/demodulator
  • 1%, 1⁰