Agilent / HP 4284A Precision LCR Meter
Agilent / HP Laboratory Measurement Instruments. Frequency Range: 20 Hz to 1 MHz, Voltage / Current Range: 10 mVrms to 1 Vrms (Constant Mode); Current: 50 µArms to 20 mArms (Normal Mode), 100 µArms to 10 mArms (Constant Mode); Option 001: 20 Vrms / 0.2 Arms with ±40 Vdc bias, Voltage: 5 mVrms to 2 Vrms (Normal Mode).
- Model
- Agilent / HP 4284A
- Calibration
- Available on request
- Price
- $2,099
- Status
- In stock
- RFQ ref
- 4284A
This unit
The Agilent/HP 4284A Precision LCR Meter delivers high-accuracy component and material characterization across a broad frequency spectrum. Built for research, production testing, quality assurance, and incoming inspection, the 4284A combines measurement versatility with cost-effective operation and compliance with IEC/MIL test standards.
Technical Specifications
The 4284A measures impedance (|Z|), admittance (|Y|), inductance (L), capacitance (C), resistance (R), conductance (G), dissipation factor (D), quality factor (Q), equivalent series resistance (Rs), parallel resistance (Rp), reactance (X), susceptance (B), and phase angle (θ). Measurement combinations and deviation calculations from programmable reference values are supported. Frequency coverage spans 20 Hz to 1 MHz with 8610 selectable frequencies at ±0.01% accuracy. Test signal modes include Normal (program-selected voltage or current) and Constant (maintained voltage or current independent of DUT impedance changes). Voltage ranges from 5 mVrms to 2 Vrms (Normal Mode) with ±(3% of reading + 0.5 mVrms) accuracy in Constant Mode and ±(10% + 1 mVrms) in Non-constant Mode. Current ranges from 50 µArms to 20 mArms (Normal Mode) with ±(3% of reading + 5 µArms) accuracy in Constant Mode and ±(10% + 10 µArms) in Non-constant Mode. Option 001 extends capabilities to 20 Vrms / 0.2 Arms with variable ±40 Vdc bias. Basic measurement accuracy is 0.05%; at 1 MHz, capacitance achieves 0.05% and dissipation factor 0.0005. L, C, X, and B accuracies apply when measured D ≤ 0.1.Key Features
- Four-terminal pair measurement terminals
- Parallel and Series equivalent measurement circuits
- Auto and Manual ranging (Hold/Up/Down)
- Internal, External, BUS (GPIB), and Manual triggering
- Programmable delay from trigger to measurement: 0 to 60.000 seconds in 1 ms steps
- Short, Medium, and Long integration time modes
- Averaging from 1 to 256 measurements
- Standard test cable lengths: 0 m and 1 m selectable
- Option 4284A-006 adds 2 m and 4 m cable length selection
Typical Applications Research and development, production testing, quality assurance, incoming component inspection, and material characterization.
Compatibility & Integration GPIB (BUS) programmability enables integration into automated test systems.
Agilent / HP 4284A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Agilent / HP 4284A. Calibration covers impedance magnitude accuracy at 100 Hz, 1 kHz, 10 kHz, and 100 kHz, dissipation factor (D) and quality factor (Q) accuracy, phase angle accuracy, open and short compensation verification, and cable length compensation. HP/Keysight 4284A additionally verified at 1 MHz.. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Agilent / HP 4284A faults: GPIB interface board failure, display failure, guard terminal switch contact wear, oscillator calibration drift on older analog bridges. HP 4284A and 4285A most common faults are HPIB interface board failure and display contrast loss. The internal oscillator and vector measurement circuits are highly stable and rarely fail. Wayne Kerr and GenRad bridge instruments may develop switch contact wear on decade resistance/capacitance dials.
Agilent / HP 4284A price
This Agilent / HP 4284A is listed at $2,099. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Agilent / HP 4284A calibration cost
NIST-traceable calibration for the Agilent / HP 4284A is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers impedance magnitude accuracy at 100 Hz, 1 kHz, 10 kHz, and 100 kHz, dissipation factor (D) and quality factor (Q) accuracy, phase angle accuracy, open and short compensation verification, and cable length compensation. HP/Keysight 4284A additionally verified at 1 MHz.. Turnaround is 1 to 3 business days after receipt. See full calibration details →
