Procedure

SetVoID.vi sends out the gate voltage of the driver transistor (M₁, NMOS) and then sweeps Chan1_out to set the output bias voltage (Chan1_in) at V_DD/2. This VI is a subVI in the gain measurement VI (below, next part). To run this VI as a top VI, set the Index to zero. Set Chan0_out Initial to 0V.

• Run SetVoID.vi while adjusting V_GS for the lowest value of the I_D range of about 50 μA. Verify that the bias-setting circuit functions properly. Adjust the Control-Loop Constant to obtain a final dc value convergence rate similar to that in the example. Default and save the Front Panel.