Agilent/Keysight 419A

The Agilent/Keysight 419A is a impedance analyzer engineered for precise measurement of impedance parameters across the RF spectrum from 1 MHz to 1000 MHz. The instrument delivers direct readings of impedance (Z), admittance (Y), resistance (R), reactance (X), conductance (G), susceptance (B), inductance (L), capacitance (C), dissipation factor (D), and quality factor (Q) with 4.5-digit resolution. It measures impedance from 1 mΩ to 100 kΩ and includes a built-in DC bias supply capable of ±40 V in 10 mV steps with automatic sweep functionality.

Technical Specifications

• Frequency Range: 1 MHz to 1000 MHz


• Measurement Parameters: Direct reading of Z, -q, Y, -q, G, -q, L, C, R, D, Q, R-X, G-B; impedance measurement: |Z|, |Y|, Theta, R, X, G, B, L, C, D, Q, Delta, Delta%


• Resolution: 4.5 digits maximum


• Measuring Range: 1 mΩ to 100 kΩ (Z)


• Internal Synthesizer Accuracy (Option 002): 3 ppm


• DC Bias Supply: ±40 V in 10 mV steps with auto sweep


• Memory: Two complete front-panel settings stored in non-volatile memory


• Interface: Standard HP-IB

Key Features

• Variable-frequency internal synthesizer with automatic sweep capability


• Outstanding repeatability and frequency response with unique error-correction capability


• Specially designed test fixtures for measurement accuracy


• Dual-parameter display and flexible measurement parameter selection

Typical Applications

• Component evaluation of LCR elements, including high-frequency chip and leaded components


• Material characterization for electronic research applications


• Circuit design analysis and component evaluation


• Semiconductor testing including C-V/G-V characteristics and diode/transistor impedance evaluation


• Resonator, filter, and magnetic/dielectric material assessment

Compatibility & Integration The 419A integrates with HP-IB networked test systems. The 41900A PI-Network Test Fixture supports crystal resonator and filter measurements on this platform.