HP / Agilent 4274A LCR METER
The HP/Agilent 4274A is a high-precision LCR meter designed for accurate and reliable impedance measurements. It operates at various frequencies to characterize components and materials, making it suitable for quality control, research, and development applications.
- Model
- HP / Agilent 4274A
- Calibration
- Available on request
- Price
- $1,762
- Status
- In stock
- RFQ ref
- 4274A
This unit
The HP/Agilent 4274A is a microprocessor-based LCR meter engineered for precision impedance characterization of electronic components, materials, and circuits across diverse operating conditions. This instrument delivers 0.1% basic accuracy and up to 5½-digit resolution, making it essential for R&D, quality control, and production testing environments requiring detailed component analysis.
Technical Specifications
Measurement Parameters- Inductance (L), Capacitance (C), Resistance (R), Dissipation Factor (D), Quality Factor (Q)
- Equivalent Series Resistance (ESR), Conductance (G), Susceptance (B), Reactance (X)
- Absolute impedance magnitude (|Z|) and Phase Angle (θ)
- Absolute and percentage deviation measurement Test Frequencies & Accuracy
- 100 Hz to 100 kHz range with 11 spot frequencies: 100 Hz, 120 Hz, 200 Hz, 400 Hz, 1 kHz, 2 kHz, 4 kHz, 10 kHz, 20 kHz, 40 kHz, 100 kHz
- Spot frequency accuracy: ±0.01%
- Optional support for one or two arbitrary test frequencies Signal Level Control
- 1 mVrms to 5 Vrms, continuously variable across four ranges
- Front panel adjustable with integrated test signal level monitor Resolution & Range
- High resolution: 5½ digits; Normal mode: 4½ digits
- D resolution to 0.00001
- Capacitance: 1 pF to 1000 mF
- Inductance: 100 nH to 10 kH
- Resistance: 100 mΩ to 10 MΩ Measurement Modes
- Series and parallel equivalent circuit selection
- Automatic mode for circuit topology selection
- Automatic zero offset compensation; normalization range: C<20 pF, L<2000 nH, R<0.5 Ω, G1 kHz), 140–210 ms (≤1 kHz)
- Z-θ mode: 170–210 ms (>1 kHz), 170–240 ms (≤1 kHz)
- High resolution mode adds approximately 8× normal time
- Auto-ranging: 100–300 ms per range change
Key Features
- Four-terminal pair configuration with auto-zero adjustment minimizes test lead and fixture errors
- Internal or external triggering; manual trigger option
- Auto or manual ranging (Up/Down)
- Automatic self-test with pass/fail indication
- Optional DC bias: ±35 V (1 mV resolution) or ±99.9 V (100 mV resolution)
Electrical Requirements
- Power: 100/120/220/240 VAC, ±10% (240 V: +5% / −10%), 48–66 Hz
- Maximum consumption: 135 VA
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 100 Hz to 100 kHz | Voltage / Current Range: 1 mVrms to 5 Vrms |
| 100/120/220/240 VAC ±10% (240 V | +5% / −10%) |
| Optional DC Bias | ±35 V or ±99.9 V |
HP / Agilent 4274A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the HP / Agilent 4274A. 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 4274A 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 4274A price
This HP / Agilent 4274A is listed at $1,762. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
HP / Agilent 4274A calibration cost
NIST-traceable calibration for the HP / Agilent 4274A 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 →
