Quick Start EN the power supply using the power cord provided in the attachment. Press the power switch in the lower left corner of the front panel to turn on the instrument. If the instrument is not turned on, please confirm that the power cord is securely connected and ensure that the instrument is connected to a powered power source. Warning： To avoid electric shock, please ensure that the instrument is properly grounded. 4.3.2 Adjusting the handle To adjust the handle of the instrument, hold the handles on both sides of the instrument and pull them outward, then rotate the handles. Figure 4-3 Handheld position Copyright © Qingdao Hantek Electronic Co., LTD HBT3000 series user manual 15