1 to operating personnel and equipment, instrument in safety equipment safety within the normal work and ensure accurate, reliable data measured wave, reduce outside noise interference, General oscilloscope through adjust brightness and focus knob to spot diameter to make clear, the minimum error decreases test waveforms, Don't make a glowing in fixed or beam bombardment in screen is formed a dark spots, damaged screen.

2 measurement system - such as the oscilloscope , the source, Printer and computer equipment, etc. By measuring instrument, electronic equipment - such as electronic components, circuit boards, by measuring equipment supply power equipment grounding must be connected to the public to ().

3 TDS200 / TDS1000 / TDS2000 series digital oscilloscopes, only use with probe measurement (signal is the signal - the output signal amplitude, less than 300V CAT II) signal waveform. Absolutely cannot measure AC220V mains mains or AC220V cannot isolate the float to the electronic equipment. The earth is not ReDe (connect, otherwise cause damage, such as induction test).

4 the shell, general oscilloscope signal input BNC socket, probe grounding metal outer, AC220V socket grounding end are interlinked. If it doesn't meet the instrument, probes to float directly to signal measurement instrument, is relatively the earth will produce potentials, Voltage probe grounding contact is tested with the point between the equipment potentials. It will be on the operator, oscilloscope, measured by electronic equipment brings serious security risk.

If users need 5 measuring switching power supply (switch power, control circuit), primary uninterrupted power supply (UPS), electronic ballast, energy-saving, inverter type etc oscilloscope products or other AC220V mains and isolation of electronic equipment can float to signal tests, will use DP100 pressure differential detector isolation.