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Today, we will use examples to illustrate how to quickly adjust the parameters of the DVC2000. The main components of the Fisher DVC2000 digital valve controller (from outside to inside) are as follows: a housing with a glass window, an EMI protection cover, a main board with an LCD and touch buttons, amplifier keys, integrated circuit components, I/P converters, wiring terminals and sensor components, an exhaust vent, and the housing itself. Method for setting parameters of fisherDVC2000: 1. First, remove the outer casing, then connect the wires. Next, turn on the power supply of the current generator to supply a current signal of 4mA~20mA, which will activate the LCD display; after that, select the language. Operation method: Hold the up, down, left, and right buttons simultaneously for 3 seconds, then use the up and down buttons to select the language you need from the seven available options. After that, click the right button to confirm. 2. Then, set the parameters based on whether the actuator of the valve body is of the air-open type or air-close type. Operation method: Press the down button to find the “Detailed Settings” option, then press the right button to confirm entry. If the actuator of the valve body is of the air-actuated type (FC): Press the right button to locate the “Zero Control Signal” option, then use the up and down buttons to select “Valve Closed”, and press the right button to confirm. Right-click to find the item \"Process transmitter output 4mA\", use the up and down arrows to select \"Valve closed\", then right-click to confirm. For air-operated shut-off (FO) type: right-click to find the item \"Zero control signal\", then use the up and down arrows to select \"Valve open\", and right-click to confirm. Right-click again to find the option “Stroke Transmitter Output 4mA”, use the up and down keys to select “Valve Closed”, and right-click to confirm. 3. Stroke Automatic Calibration Settings: Procedure: Use the down key to locate the “Stroke Calibration” option, right-click to enter it, then use the up and down keys to select “Automatic” and right-click to confirm. The LCD will display “Press right button for 3 seconds; the valve will move”, and follow the instructions given – it will then automatically search through all positions of 0%, 100%, and 50%. After completion, right-click to confirm. Note: You cannot exit during the search; pressing any key has no effect. You must wait until the entire process is completed. Setting gain codes (C~M); when it is C, the valve moves most slowly, and when it is M, the valve moves fastest. Choose the appropriate one; generally set it to “L” to ensure that the valve does not oscillate. Operation method: Press the down button to find the “Tuning” option, press the right button to confirm and enter, then use the up and down buttons to select “Automatic” and press the right button again. The LCD will display “Press the right button for 3 seconds for the valve to operate”; follow the instructions given, proceed with automatic tuning, wait, and then press the right button to confirm once it’s complete. If oscillation occurs during the use of the valve in the future, select “Manual” and confirm by right-clicking; the LCD will display “Press the right button for 3 seconds and the valve will operate”, after which follow the instructions to modify the set value (gain code) until the valve no longer oscillates.