Safely Using the Test Tool
Warning
Do the following to avoid electrical shock or fire if a test tool 
common input is connected to more than 42V peak (30V rms):
∙Use only test leads and test lead adapters supplied with the test tool. (or equivalents as specified in the accessory list, see Chapter 2.)
∙Do not use conventional exposed metal banana plug connectors.
∙Use only one common connection to the test tool.
∙Remove all test leads that are not in use.
∙Use 600V (or more) rated and marked test lead adapters. The maximum allowable input voltage is 600V.
∙Connect the power adapter to the AC outlet before connecting it to the test tool.
∙Do not insert metal objects in the power adapter connector.
The terms ‘Isolated’ or ‘Electrically floating’ are used in this manual to indicate a measurement in which the test tool COM (common, also called ground) is connected to a voltage different from earth ground.
The term “Grounded” is used in this manual to indicate a measurement in which the test tool COM (common) is connected to an earth ground potential. For more information about proper grounding, see Chapter 3.
The test tool COM (common) inputs (red INPUT A shield, gray INPUT B shield, and black
4 mm banana jack COM (common) can be connected to a voltage above earth ground for isolated (electrically floating) measurements and is rated up to 600V rms above earth ground.
5