Agilent/Keysight 4282A

The Agilent/Keysight 4282A is a digital high capacitance meter engineered for precision measurement of inductance, capacitance, and resistance across component testing, quality control, and research environments. This four-terminal LCR meter specializes in high-capacitance measurement - particularly electrolytic and tantalum capacitors - with nine capacitance ranges spanning 10 nF to 1 F full scale. The instrument delivers four-digit resolution on capacitance readings and three-digit resolution on dissipation factor and DC resistance measurements.

Series equivalent circuit representation minimizes lead impedance effects during capacitance and resistance measurements. An integrated DC digital voltmeter extends functionality to DC voltage measurements up to 600 V.

Technical Specifications

• Capacitance measurement ranges: 10 nF to 1 F full scale (nine ranges)


• Capacitance display resolution: Four-digit


• Dissipation factor and DCR display resolution: Three-digit


• DC voltage measurement capability: Up to 600 V


• Measurement method: Four-terminal configuration


• Equivalent circuit representation: Series


• Power requirements: 100 V, 120 V, 220 V, or 240 V ±10%, 50 Hz or 60 Hz, approximately 70 VA


• Operating temperature: 0°C to +50°C


• Operating humidity: <90% relative humidity


• Dimensions: 425 mm (W) × 88 mm (H) × 467 mm (D)


• Net weight: 8.8 kg

Key Features

• Four-terminal measurement geometry reduces parasitic lead inductance and resistance effects


• Extended capacitance range accommodates bulk capacitor testing without range switching


• Integrated DC voltmeter eliminates need for separate voltage measurement instrumentation


• Series equivalent circuit model suits component characterization for filter and power supply applications

Typical Applications

• Production acceptance testing of high-value capacitors


• Research and product development of energy storage components


• In-circuit component verification and troubleshooting


• Characterization of dielectric and electrolytic capacitor behavior

Compatibility & Integration This is a legacy product. Agilent Technologies discontinued direct sales and support. Operating and Service Manuals remain available through archival channels (4282A Digital High Capacitance Meter Operating and Service Manual, Part Number 04282-90001, Revision January 1982).