Quick Start EN Figure 4-7 Keypad Note: If no settings are made on the numeric keyboard interface for more than 30 seconds, the instrument will automatically jump to the measurement display interface. 4.6 Using the built-in help system To obtain help information for any front panel buttons or menu soft keys, on the measurement display interface, press the [?] button on the front panel, and then press the button you need help with to obtain the operation prompt for that button. Press the [?] button again to exit the help system. Copyright © Qingdao Hantek Electronic Co., LTD HBT3000 series user manual 19