What does a 1/2 digit on a DMM indicate?

Study for the Federal Communications Commission (FCC) Element 3 Test. Use flashcards and multiple choice questions with hints and explanations. Get prepared for your exam today!

A 1/2 digit on a Digital Multimeter (DMM) indicates partial extended accuracy on the lower part of the range. In the context of DMM specifications, a "1/2 digit" refers to the display's ability to show values that could lead to a slight extension in the resolution of measurements at the lower end of the measurement range.

For example, a DMM that has a resolution of 1.00 counts on the display might be capable of providing readings from 0 to 1999, while incorporating a 1/2 digit means it can also display a value such as 2000 or even 2000.5, thereby offering better precision and accuracy at lower values. This is particularly useful in scenarios where fine measurement and sensitivity to small changes are necessary, such as when measuring resistance, voltage, or current in sensitive electronic components.

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