HP / Agilent 4271A Digital LCR Meter
The HP/Agilent 4271A Digital LCR Meter is a precision instrument designed for accurate and reliable measurement of inductance (L), capacitance (C), and resistance (R) in electronic components and circuits. It operates at a test frequency of 1 MHz, making it suitable for evaluating high-frequency characteristics. The meter features a digital display for easy reading of measurements and offers a variety of test modes and ranges to accommodate a wide range of component values. Ideal for quality control, component selection, and circuit design verification.
- Model
- HP / Agilent 4271A
- Calibration
- Available on request
- Price
- $1,762
- Status
- In stock
- RFQ ref
- 4271A
This unit
The HP/Agilent 4271A is a precision digital LCR meter engineered for rapid, accurate measurement of inductance, capacitance, resistance, dissipation factor, and conductance at 1 MHz ±0.01%. Operating on a four-terminal pair measurement technique, it minimizes errors from stray capacitance and residual inductance - critical for evaluating low-value components and high-frequency characteristics. Dual 4½-digit LED displays with 90% overrange capability deliver clear readout, while measurement speeds up to 5 readings per second support high-throughput production testing and quality control workflows.
Technical Specifications
Measurement Parameters: Inductance (L), capacitance (C), resistance (R), dissipation factor (D), and conductance (G). Frequency: 1 MHz ±0.01% Measurement Ranges:- Capacitance: 0.000 pF to 19,000 nF; resolution 0.001 pF
- Inductance: 0.000 nH to 1900.0 µH; resolution 0.1 nH
- Resistance: 10 ohms to 10 kohms full scale
- Conductance: 100.00 µS to 100.00 mS full scale
- Dissipation factor: Measured with C-D or L-D modes Accuracy: Basic accuracy 0.1%; L, C, and R accuracy 0.2% of reading (0°C to 50°C). Test Signal Levels: Capacitance measurement at 20 mVrms (low) or 500 mVrms (high); inductance measurement at 5 mA to 2 µA test current. Measurement Speed: Up to 5 readings/second; C-G and L-R modes 100–250 ms; C-D and L-D modes 160–400 ms. Display: Dual 4½-digit LED with 90% overrange. Environmental: Operating temperature 0°C to 50°C; humidity to 95% RH at 40°C. Power: 100/120/220 VAC.
Key Features
- Four-terminal pair technique eliminates stray and residual component effects
- Offset adjustment compensates fixture stray capacitance, inductance, resistance, and conductance
- Optional DC bias (Option 001): 00.0 V to 39.9 V in 0.1 V increments; ±0.2% of setting ±5 mV accuracy; 1.5 kΩ ±10% output resistance
- Optional calculator interface (Option 005) via TTL I/O for HP 9810A/9820A integration
Typical Applications Production testing, quality control, component characterization, and circuit design verification in electronics manufacturing.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 1 MHz ±0.01% | Voltage / Current Range: DC bias 00.0 V to 39.9 V |
HP / Agilent 4271A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the HP / Agilent 4271A. 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 HP / Agilent 4271A 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.
HP / Agilent 4271A price
This HP / Agilent 4271A is listed at $1,762. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
HP / Agilent 4271A calibration cost
NIST-traceable calibration for the HP / Agilent 4271A 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 →
