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Benchtop LCR Meters
Fundamental electrical measurements at your workbench
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Handheld Capacitance and LCR Meters
Bench-level accuracy in a handheld test meter
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Impedance Analyzers
High-performance benchtop impedance analyzers
Benchtop LCR Meters
Keysight ZA2-class benchtop LCR meters include the E4980B Series which go far beyond fundamental impedance testing. They deliver highly precise and reliable measurements of passive components, supporting frequency ranges up to 3 GHz. Our benchtop LCR meters accurately measure a broad set of electrical parameters — including resistance, capacitance, inductance, and impedance — under a wide variety of test conditions, such as varying frequencies, signal levels, and bias voltages.
Handheld Capacitance and LCR Meters
Keysight ZA1-class handheld capacitance and LCR meters include the U1700 Series. They combine portability with precision, offering reliable, easy-to-use measurements for on-the-go testing and troubleshooting. Designed for quick checks in the lab, field, or production floor, these meters provide fast response and accurate measurements of capacitance, inductance, and resistance. Compact yet capable, they support a wide range of component testing needs with dependable performance wherever your work takes you.
Impedance Analyzers
Keysight ZA5-class impedance analyzers include the E4990A Series. They extend beyond general-purpose LCR measurements to provide deeper insights into demanding applications like equivalent circuit modeling, high-frequency characterization, and materials validation. Compared to our benchtop and handheld LCR meters, our impedance analyzers deliver extended analysis functions and flexible biasing, ideal for analyzing complex materials and performing device characterization.
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Frequently asked questions
While both instruments are commonly used to conduct impedance measurements, LCR meters display numeric data only, while impedance analyzers display data in either numeric or graphic formats. LCR meters offer a low-cost, fast, and easy-to-use solution for basic, fixed-frequency impedance measurements. Impedance analyzers are a more sophisticated solution, providing a variety of impedance measurements, resonant analysis, and circuit modeling capabilities over swept frequency.
An LCR meter is used to make parametric measurements. Parametric testing quantifies the "parameters" of the operation of a circuit under various conditions. These measurements focus on identifying the values of specific characteristics that define the intended behavior of electronic devices.
The following parameters are typically measured using an LCR meter:
- Resistance (R): Measures how much a component opposes the flow of electric current.
- Capacitance (C): Indicates a component's ability to store electrical charge.
- Inductance (L): Measures a component's ability to store energy in a magnetic field when electric current flows through it.
- Quality Factor (Q): Represents a capacitor's energy storage efficiency.
- Dissipation Factor (D): Indicates energy loss of a capacitor.
- Equivalent Series Resistance (ESR): Delineates the inherent resistance behavior typically found in capacitors across selected frequencies.
An impedance analyzer measures the complex impedance of electronic components, circuits, or materials across a wide range of frequencies. Impedance includes both resistance and reactance, and its behavior changes depending on the frequency of the applied signal. By analyzing the impedance, you can gain insights into a variety of electrical properties such as capacitance, inductance, dissipation factor, and quality factor. These measurements are essential for accurately characterizing passive components like capacitors and inductors, as well as evaluating materials used in advanced technologies.
Impedance analyzers are used in both research and production environments. During development, they can help you ensure proper impedance matching, optimize circuit performance, and troubleshoot signal integrity issues. In manufacturing, they play a key role in quality control by verifying that components meet required specifications. Impedance analysis is also used in fields like materials science, electrochemistry, and biomedical engineering.