The Agilent/Keysight 4084A is a precision impedance analyzer engineered for accurate characterization of electronic components, materials, and circuits across frequencies from 40 Hz to 110 MHz. Operating in a four-terminal pair configuration, it delivers comprehensive measurement capabilities across 20 distinct parameter formats, making it essential for component validation, materials research, and production quality assurance.
Technical Specifications
Measurement Parameters
The 4084A quantifies impedance in multiple representations: |Z|-θ and |Y|-θ (magnitude and phase), R-X (resistance and reactance), series and parallel inductance configurations (Ls-Rs, Ls-Q, Lp-G, Lp-Q, Lp-Rp), series and parallel capacitance configurations (Cs-Rs, Cs-Q, Cs-D, Cp-G, Cp-Q, Cp-D, Cp-Rp), G-B (conductance and susceptance), and complex Z-Y. Derived parameters include |Z|-Ls, |Z|-Cs, |Z|-Lp, |Z|-Cp, |Z|-Rs, |Z|-Q, and |Z|-D.
Frequency & Resolution
Frequency range spans 40 Hz to 110 MHz with 1 mHz resolution.
Signal Source
Voltage test signal: 5 mVrms to 1 Vrms (1 mV resolution). Current test signal: 200 µArms to 20 mArms (20 µA resolution). Test signal level sweeping evaluates voltage and current dependency.
DC Bias
DC voltage bias: 0 V to ±40 V (1 mV resolution). DC current bias: 0 mA to ±100 mA (40 µA resolution). Auto Level Control (ALC) feedback maintains precise bias throughout sweeps, enabling C-V characterization. Bias sweeping supports dependency evaluation across the full range.
– Key Features
• Four-terminal pair configuration with BNC female connectors for high-accuracy measurements
• Signal level dependency evaluation via voltage and current sweeps
• DC bias dependency analysis with automatic level control feedback
• Single-port measurement capability via optional 42942A Terminal Adapter (7 mm) or 42941A Impedance Probe (3.5 mm)
– Typical Applications
• Component characterization in R&D environments
• Varactor diode C-V characterization with DC bias sweep capability
• Manufacturing quality control and production testing
• Material impedance profiling across wide frequency span
– Compatibility & Integration
The standard four-terminal pair port accepts BNC female connectors. Optional adapters convert to single-port terminal configurations for alternative measurement geometries.
