Quick start EN ⚫ In [Wave] > Arb > Type > Custom , the knob is used to select different arbitrary waveform files. ⚫ In the store and recall function, the knob is used to select the location where the file is saved or the file to be read. 4.6 Using the built-in help system To get help on any front-panel key or menu softkey, first press the front-panel [?] key, then the key for which you want help. If there are indexes for other topics in the content view, the user can rotate the knob to select a different index, press the button to enter the corresponding topic content. Press the [?] key again to exit. HDG3000C User manual Copyright © Qingdao Hantek Electronics Co., LTD 18