E4991A–用户操作维护说明书手册

CautionDo not exceed the operating input power,voltage,and currentlevel and signal type appropriate for the instrument being used,refer toyour instrument's Function Reference.Electrostatic discharge(ESD)n amage the highly sensitivemicrocircuits in your instrument.ESD damage is most likely to occur asthe test fixtures are being connected or disconnected.Protect them fromESD damage by wearing a grounding strap that provides a highresistance path to ground.Alternatively,ground yourself to discharge anystatic charge built-up by touching the outer shell of any groundedinstrument chassis before touching the test port connectors.