Analog Electronics with LabVIEW®

P9.6. Common-Mode Gain Measurement

Procedure The common-mode gain can be obtained directly with Circuit P9.2. This is accomplished with the VI, CBGain.vi. The squarewave input signal is applied with Chan1_out. Open CMGain.vi and set in the resistor values. Set Vs to a larger value than that used in Gain.vi, to compensate for lower gain. Run the VI to verify that the circuit is functioning properly. Expect the gain to be about unity, based on the design RS = RD/2. (Ideal common-mode gain is zero.) Open and run AvgCMGain.vi. Obtain a data file ...