1. Working power supply+18V1A. The output characteristic curve can be obtained by reading the data based on the curve position and dividing it by the range multiplier to obtain the actual current value. The actual current value can be obtained by dividing the input characteristic curve by the base current range multiplier based on the vertical axis data. 2. The working voltage of the main control panel inside the board is+5V, the working voltage of the LCD screen is 3.3V, the working voltage of the LCD backlight board is+5.8V, and other chips Operating voltage+/-9V 3. Measurement of collector operating voltage for NPN transistor+9V and PNP transistor -9V using the characteristic curve of a crystal transistor; volt ampere characteristic of a crystal diode.The working voltage for the sex curve is+9V, and the working voltage for measuring the resistance volt ampere characteristic curve is+9V. 4. Class wave base current maximum current 200uA/step, range 10 times, i.e. 200UA/gear, 100UA/gear, 66.7 UA/gear, 50UA/gear, 40UA/gear, 33.3UA/gear, 28.5UA/gear, 25UA/gear, 22.2UA/gear, 20UA/gear. Measure the voltage on the horizontal axis of the interface at 0.91V per grid, for a total of 5 and a half grids. Confirm the voltage based on the position on the horizontal axis. 5. The maximum current of the collector is 150MA, and the range is divided into 10 magnifications. The output characteristic curve scanning line has a total of 8 levels and can be displayed in a single operation. The single scanning speed is 440MS, and the total scanning speed is 3200MS. Panel Introduction: 1. Power input port: socket+18V. 2. Main screen: Read the parameters of the counting transistor according to the operation. 3. Switch conversion port: The upper end of the left switch is used to measure NPN tubes, resistors, and diodes, while the lower end of the l