• A cable that is left unconnected on a bench can develop a large static charge. Discharge the static voltage from all cables before
connecting them to the instrument or device under test by momentarily grounding the center conductor of the cable, or by connecting a
50 Ω termination to one end, before attaching the cable to the instrument.
• Before you apply power, connect the instrument to an electrically-neutral reference point, such as earth ground. To do this, plug the
three-pronged power cord into an outlet grounded to earth ground. Grounding the oscilloscope is necessary to ensure safety and to
take accurate measurements.
• If you are working with static sensitive components, ground yourself. Static electricity that builds up on your body can damage
static-sensitive components. Wear a wrist strap to safely send static charges on your body to earth ground.
• The oscilloscope must share the same ground as any circuits that you plan to test.
Operating basics
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