Input Voltage: 110V or 220V ( Optional) --------------------------------------------------- Output size : 30V-5A 30V-10A Operation points: Power on and off: 1. Press the power switch to turn on the power, the display is initialized, and the machine displays the parameter settings before the last shutdown. Press again to turn off the power switch. Output parameter setting: 1. Connect the load to the front panel terminals. 2. Set the output voltage and current. Press the V/A key to switch between voltage adjustment and current adjustment. Use the jog dial to adjust voltage and current. Normally, voltage and current work in fine adjustment mode. Press the AD JUST button down to switch to the coarse adjustment mode. Each time you press the AD JUST button, the cursor moves one position to the left. Save Settings Background: The front panel settings can be saved in 4 groups of internal storage. Panel operation: Press the corresponding storage keys M1~M4 to set the corresponding voltage and current values. Press the corresponding storage key again, the current will automatically store the set voltage and current data. Locking the front panel: Panel operation: Press the LOCK button, the button light will light up, and all buttons and knob operations on the front panel except ON/OFF will be locked. If you need to lock the contact, press the LOCK button again, the button light will go out, and the panel operation will resume. Input voltage: 220V/110V ± 10% 50Hz Working temperature: 0°C~40°C Working relative humidity: <80%RH Storage temperature: -10°C~70°C Storage relative humidity: <70%RH Constant voltage state 1. Voltage stability: ≤0.1%+3mV Low voltage: 0.2~0.3%+3mV 2. Load stability: ≤0.5%±3mVy 3. Ripple noise: ≤30mVrms (effective value) Constant current state: 1. Current stability: ≤0.2%+3mA 2. Load stability: ≤0.2%±3mA 3. Ripple noise: ≤20mArms (effective value) Display accuracy: 0.5%±2 words display resolution: 1. Voltage: 00.01V 2. Current: 0.001A