Dielectric absorption compensation for a measurement instrument

摘要

A method for compensating for a dielectric absorption effect in a measurement configuration during measurements by an instrument having measurement terminals includes providing a feedback loop in the instrument, the loop having a gain adjustment and a simulation impedance and being adapted to provide a signal counter to the dielectric absorption at the measurement terminals; applying a transient calibration signal to the test terminals for at least two values of the gain adjustment; measuring a response to the calibration signal for each of the at least two values; and determining an operating value of the gain adjustment based on the measured responses. The operating value is used for subsequent measurements by the instrument, the simulation impedance modeling the dielectric absorption characteristics of the measurement configuration.

主权项

1. A method for compensating for a dielectric absorption effect in a measurement configuration during measurements by an instrument having measurement terminals, said method comprising:
providing a feedback loop in said instrument, said loop having a gain adjustment and a simulation impedance and being adapted to provide a signal counter to said dielectric absorption effect at said measurement terminals; applying a transient calibration signal to said test terminals for at least two values of said gain adjustment; measuring a response to said calibration signal for each of said at least two values; and determining an operating value of said gain adjustment based on said measured responses, said operating value being used for subsequent measurements by said instrument, wherein said simulation impedance models the dielectric absorption characteristics of the measurement configuration.