Measurement Considerations From NI Digital Multimeters previous page next page Measurement Considerations When taking measurements with a DMM, consider the following: Normal and common-mode signals Normal-mode rejection ratio (NMRR) Common-mode rejection ratio (CMRR) Effective common-mode rejection ration (ECMRR) Input resistance Burden voltage Thermal voltages Settling time Resistor self-heating Dielectric absorption Residual impedance Stray admittance previous page start next page