DescriptionHuidu VP620A Key Description Switch AC power input switch LCD screen Display menu, screen parameters and other information, used for debug device SOURCE Input Source Select keypad, 5 input source port selection buttons, corresponding to the input interface identification on the back panel. BLACK: when you press BLACK and its indicator will be on, the output screen will be in a black state. FUNCTION Function keys, the key multiplexing function is digital selection, generally used when setting the resolution BRIGHT: Quickly swap out the shortcut keys of the brightness adjustment menu. MODE: Quickly pop up the preset mode call menu. PXP: Quickly enter the dual picture layout menu FREEZE: Shortcut key for screen freeze. LOCK: Quickly lock the keys to prevent miss operation. REV: reserved function keys. WIN [WIN1]- [WIN2] Button: You can press it to add 1~2 window display, and its indicator means the currently selected window. MENU Short press the knob [OK] key: it means to enter the main menu or input confirmation. Turn the knob clockwise to increase or the next option, counterclockwise to decrease or the previous option. GUIDE: can quickly switch out the "smart navigation" setting interface. Return key ESC: means to exit the current operation or option.