Tektronix Encore


Agilent E4991B, Keysight E4991B, HP E4991B
Impedance Analyzer, 1 MHz - 3 GHz

Component Analyzers, LCR, Semiconductor >> Impedance, Capacitance and LCR >> Impedance Analyzer, 1 MHz - 3 GHz
Rent Used Test Equipment
Manufacturer: Keysight / Agilent / HP
Model: E4991B

Keysight / Agilent E4991B Impedance Analyzer, 1 MHz - 3 GHz

Electronic Test and Measurement Equipment

Keysight / Agilent E4991B Impedance Analyzer, 1 MHz - 3 GHz Product Datasheet Download Product Datasheet

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Product Overview


The Keysight E4991B Impedance Analyzer is the perfect solution for characterizing and evaluating electronic components, semiconductor devices, and materials. It provides unparalleled accuracy over a wide impedance range with its built-in DC bias (Option 001) and it also supports a variety of test accessories making measurements simple and reliable. 

Features and Specifications of the Keysight E4991B (Agilent) Impedance Analyzer include:

Features of the Keysight E4991B Impedance Analyzer:

  • Frequency options, upgradable:
    • 1 MHz to 500 MHz
    • 1 MHz to 1 GHz
    • 1 MHz to 3 GHz
  • Equivalent circuit analysis function:
    • Supports seven different multi parameter models
    • Helps to simulate your own equivalent parameter values of components
  • ±0.65% basic accuracy and 120 mΩ to 52 kΩ impedance range (10% measurement accuracy range)
  • Supports seven different multi parameter models
  • Measurement parameters:  
    • lZl, lYl, θ, R, X, G, B, L, C, D, Q, lΓl, Γx, Γy, θΓ, Vac, Iac
    • Option one is required for Vdc and Idc
  • Built-in DC bias source (Option 001):
    • 0 V to ± 40 V
    • 0 A  to ± 100 mA
  • Data analysis function:  Equivalent circuit analysis, limit line test
  • Applications:
    • Passive components:  Impedance measurement of chip components such as capacitors, inductors, ferrite beads, resistors, transformers, or crystal/ceramic resonators
    • Semiconductor components:  C-V characteristics analysis and equivalent series resistance measurement of varactor diodes
    • Dielectric material:  Permittivity and loss tangent evaluation of plastics, ceramics, and printed circuit boards
    • Magnetic material:  Permeability and loss of tangent evaluation of ferrite, amorphous and other magnetic materials

Specifications of the Agilent E4991B Impedance Analyzer: 

  • Rear panel connectors:
    • External reference signal input connector:
      • Frequency:  10 MHz ± 10 ppm (typical)
      • Level:  0 dBm to ± 3 dB (typical)
      • Input impedance: 50 Ω (nominal)
      • Connector type:  BNC, female
    • Internal reference signal output connector:
      • Frequency:  10 MHz ± 10 ppm
      • Level:  0 dBm to ± 3 dB into 50 Ω
      • Output impedance: 50 Ω (nominal)
      • Connector type:  BNC, female
    • External trigger input connector:
      • Level:  
        • LOW threshhold voltage:  0.5 V
        • HIGH threshhold voltage:  2.1 V
      • Input level range:  0 V to +5 V
      • Pulse width (Tp): ≥2 µsec (typical)
      • Polarity: Positive or negative (selective)
      • Connector type:  BNC, female

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