LCR meters and impedance meters measures inductance (L), capacitance (C), and resistance or impedance (R). Instruments used for LCR measurements are built as universal and multifunctional devices. They enable automatic (triggered or cyclic) measurements of L, C, and R as well as other parameters such as quality and dissipation factors.  Instrument type, measurement specifications, test signal or source characteristics, and other measurements are important parameters to consider when searching for LCR meters and impedance meters.  Additional specifications that are important to consider with LCR Meters include user interface options, display options, additional output options, general features and functionality and environmental parameters.

Test signal or source characteristics that are important to consider when specifying LCR meters and impedance meters include basic accuracy, number of digits displayed, number of steps, test signal or frequency range, and response time.  Basic accuracy is the typical value at 1 kHz.  The number of digits displayed refers to the number of digits on the readout.  Number of steps in the measurement is important to consider.  The test signal frequency range is the frequency range at which the instrument operates.  Response time is the amount of time it takes for the LCR meters and impedance meters to make and display measurements.

Model	Type	Features
GenRad 1689/1689M	Precision RLC Digibridges	0.02% Accuracy; Programmable Freq 12 Hz - 100 kHz
GenRad 1693	Highest Performing Digibridge	0.02% Accuracy; Programmable Freq 12 Hz - 200 kHz
GenRad 1692	RLC Digibridge	0.05% Accuracy; Cost - Effective
GenRad 1659	RLC Digibridge	0.1% Accuracy; Cost - Effective
Digibridge Accessories	RLC Digibridge Accessories	Accessories for 1659, 1692, 1689, 1693 Digibridges
GenRad 1621	Ultra Precision Capacitance Measurement System	10-7 pF - 10 uF - 12 digit resolution
GenRad 1620	High Precision Capacitance Measurement System	10-5 pF to 11.1 uF, 0.01% accuracy, 1 ppm resolution
LCR-500	Low Cost LCR Meter	Low Cost Autoranging portable, multiple features
IMF-600	Impedance and multifunction meter	Multipurpose, digital output, current output, autoranging

Digibridge Accessories

Digibridge Performance Verification

LCR Meters and Bridges Application Notes

• Advantages of the Digibridge

• Operation and Measurement Techniques using the Digibridge

• Increasing the Test Voltage on a Digibridge

• High Voltage DC Bias

• Measuring Biased Inductors

• Characteristic Cable Impedance

• Constant Current with the 1693 Digibridge

• Charged Capacitor Protection

• Transformer Ratio Measured on the 1689 and 1693 Digibridge

• Voltage and Current Applied to the Unknown Using a Digibridge

• Digibridge and Battery Measurements

• Henry Hall, the Digibridge Inventor, and the Digibridge Patent

• The GenRad 1689 Used In Gas Sensor Material

• Open and Short Correction Using The Digibridge