While using a digital multimeter to diagnose electrical problems on customers’ equipment, I frequently hear the comment, “I’ve got one of those multimeter things, but I never learned how to use it.” ...

The AC71 is a clamp-style digital multimeter (DMM). The DMM's AutoTectâ„¢ feature automatically senses what type of measurement is being made when test leads are placed across a measurement point.

Let's start with DC voltage, one of the simplest and most-used multimeter measurements. The DC voltage measurement is used to determine the difference in electrical potential between two points in a ...