1、To prevent fire or electric shock, please check all the rated values and labeling information of this product；
2、Please read the user manual of this product before connecting it, in order to better understand information related to its rated values. Any liquid entering the device may cause circuit leakage or damage components. Pay attention to the power cord—over time, the machine’s power cord may become damaged, so inspect it regularly. If copper wires are exposed, replace the cord immediately to avoid accidents；
3、Do not disassemble the device unless you are a qualified technician: there is high voltage inside the instrument, and the power board is live, so do not touch any internal circuits or components to avoid burns or electric shock. If any metal object accidentally falls into the device through the heat dissipation hole, please contact professional maintenance personnel from the manufacturer to open the back cover and remove the object; otherwise, it may cause a short circuit and damage the components；
4、This product is grounded via the power cord. To prevent electric shock, the grounding conductor must be connected to earth ground. Before connecting to any input or output terminals of the device, ensure that the product is properly grounded；
5、Weak electrical signals are greatly affected by the environment. When measuring weak signals, try to minimize environmental interference, otherwise large measurement errors or even no measurement may occur. Measuring certain special signals requires the use of appropriate probes—for example, high-voltage signals require high-voltage attenuating probes, current signals require current probes, and differential signals require differential probes.
