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Variable gain above is a circuit that is used to increase signal strength in dB , needed in a circuit of gains if the range is less reinforcement amplifier input signal, and the required input signal must be high enough so that the circuit is less then the maximum amplifier sound output. For the use of gain can be placed and connected directly to the input amplifier. Part List : R1___15K R2___4K7 R3___15K R4___4K7 R5___180R R6___2K RV1__10K Trim U1___NE5532

 Description: To make the Servo system to work stably and most effectively, it is necessary to adjust the circuit loop gain value of the servo drive properly. This option provides some effective tools to optimize the operation of the servo system   Path: The user can click Tools -> Auto Gain Tuning command from the menu bar or click on the icon directly  on the tool bar to execute this option and open the following dialog box.   Functions:  There are two tabs in this dialog box, one is Off-line Computation (Static Auto-tuning) and the other is  On-line Auto Tuning (Dynamic Auto-tuning) . Please refer to the following descriptions for the functions: 1) Off-line Computation  (Static Auto-tuning)  When not connecting to the servo drive, pressing “Compute” button can calculate the value of the related gain parameters and display in the Calculation Result Area on the screen according to the conditions (B.W., JL/Jm, and Rigid Holding) se...