Agilent/Keysight 4395A Spectrum/Network/Impedance Analyzer


The 4395A provides excellent vector network, spectrum, and optional impedance measurements for lab and production applications. Gain, phase, group delay, distortion, spurious, CN, and noise measurements often required for evaluating components and circuits can be measured using one instrument.

When combined with a test set, the 4395A provides reflection measurements, such as return loss, SWR, and S parameters. As a vector network analyzer, the 4395A operates from 10Hz to 500MHz with 1 mHz resolution; and its integrated synthesized source provides -50 to + 15dBm of output power with 0.1dB resolution. The dynamic magnitude and phase accuracy are +/-0.05dB and +/-0.3 deg. so that it can accurately measure gain and group delay flatness, which are becoming more important in modern electronics systems.

As a spectrum analyzer, the 4395A operates from 10Hz to 500MHz with resolution bandwidths (RBWs) spanning 1 Hz to 1 MHz in a 1-3-10 steps. A fully-synthesized local oscillator allows stable and accurate frequency analysis. Direct A/D conversion (no LOG amplifier is used) results in +/-0.8 dB level accuracy (@50 MHz, -20 dBm). Noise sidebands fall below -100 dBc/Hz @ 100 kHz offset from carriers, while sensitivity is -145 dBm/Hz at 10 MHz.


Network analysis

  • Frequency range: 10 Hz to 500 MHz
  • 115 dB dynamic range @ 10 Hz IFBW
  • +/-0.05 dB, +/-0.3 degree dynamic accuracy

Spectrum analysis

  • Frequency range: 10 Hz to 500 MHz
  • -145 dBm/Hz sensitivity @ 10 MHz
  • Time-gated spectrum analysis option (4395A-1D6)

Impedance analysis (option 4395A-010)

  • Frequency range: 100 kHz to 500 MHz
  • Equivalent circuit analysis function
  • +/- 40 V or +/- 100 mA DC bias (Option 4395A-001)


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