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4284A

Keysight Technologies (Agilent HP)LCR

The Keysight (formerly Agilent / Hewlett-Packard) 4284A is an industry-standard precision LCR meter designed for component and material measurement. Featuring a wide 20 Hz to 1 MHz test frequency range and an exceptional basic accuracy of 0.05%, it is widely used in R&D, production, and quality assurance environments. The instrument supports versatile measurement setups with optional high-power test signals and DC bias capabilities.

Component TestingImpedance Analysis

Specifications

General

ParameterValue
InterfacesGPIB (IEEE-488)
DisplayDot-matrix LCD
Warm-up Time30 minutes
Removable StorageMemory card slot (JEIDA standard) for instrument states
Internal Setup Storage10 instrument states

Physical

ParameterValue
Power Supply100 / 120 / 220 / 240 V ±10%, 47 - 66 Hz, 200 VA max
Operating Temperature0 to 55
Dimensions (W×H×D)426 × 177 × 498
Weight15

Measurement Range and Accuracy

ParameterValue
Basic Accuracy0.05%
Impedance (|Z|, R, X) Measurement Range0.01 mΩ to 99.9999 MΩ
Admittance (|Y|, G, B) Measurement Range0.01 nS to 99.9999 S
Dissipation Factor (D) Measurement Range0.000001 to 9.99999
Quality Factor (Q) Measurement Range0.01 to 99999.9
Phase Angle (Theta) Measurement Range-180.000° to 180.000°
Error Correction/CalibrationOpen, Short, Load
Cable Length Compensation0 m, 1 m (2 m and 4 m with Option 006)

Measurement Parameters

ParameterValue
Primary Measurement Parameters|Z|, |Y|, L, C, R, G
Secondary Measurement ParametersD, Q, θ, X, B, Rs (ESR), Rp
Display Digits/Resolution6 digits

Test Signal Characteristics

ParameterValue
Test Frequency Range20 Hz to 1 MHz
Test Frequency Resolution8610 selectable frequencies
Test Frequency Accuracy±0.01%
Test Signal Voltage Range5 mVrms to 2 Vrms (up to 20 Vrms with Option 001)
Test Signal Current Range50 µArms to 20 mArms (up to 200 mArms with Option 001)
Output Impedance100 Ω (nominal)
DC Bias Voltage Range (Standard)0 V, 1.5 V, 2 V

Options and Accessories

ParameterValue
High Power DC Bias Option±40 V DC (Option 001)
Power Amplifier OptionOption 001 (increases test signals to 20 Vrms / 200 mArms and bias to ±40 V)
Handler Interface OptionOption 201 or 202
Scanner Interface OptionOption 301

Measurement Speed and Triggering

ParameterValue
Measurement Time ModesShort, Medium, Long
Trigger ModesInternal, Manual, External, Bus
Trigger Delay Range0 to 60.000 s
Averaging (Number of Measurements)1 to 256

Advanced Features and Functions

ParameterValue
List Sweep Points10 points
List Sweep ParametersTest Frequency, Test Signal Voltage/Current, DC Bias Voltage/Current
Comparator / Bin SortingSupported
Number of Bins10 bins (9 pass, 1 fail)
Continuous Memory / State Storage10 instrument states

Interfaces and Connectivity

ParameterValue
Remote Programming InterfaceGPIB

Physical and Environmental

ParameterValue
Storage Temperature Range-40 to 70 °C

Measurement Ranges

ParameterValue
Capacitance (C) Measurement Range0.01 fF to 9.99999 F
Inductance (L) Measurement Range0.01 nH to 99.9999 kH

Measurement Features

ParameterValue
Equivalent Circuit ModesSeries, Parallel
Deviation Measurement∆ (absolute deviation) and ∆% (percent deviation)
Automatic Level Control (ALC)Voltage and Current (Maintains constant signal level across DUT)

Inputs & Outputs

ParameterValue
Measurement Terminals4-terminal pair (BNC)

Options & Accessories

ParameterValue
Bias Current Interface (Option 002)Enables connection to 42841A Bias Current Source (up to 40 A DC)
External DC Bias Current CapabilityUp to 40 A (requires Option 002, external 42841A Bias Current Source, and appropriate fixture)
Extended Cable Length Compensation2 m and 4 m lengths (requires Option 006)

Power

ParameterValue
Power Consumption200 VA max

Features

ParameterValue
Test Signal Level MonitorVoltage (V) and Current (I) monitor across/through DUT

Applications

Precision LCR measurement for components and materials in R&D, incoming inspection, and production.