What are the common functions of digital voltmeters?

Digital voltmeters typically possess the following common functions:

Digital Display: Digital voltmeters can display the measured voltage values in digital form on an LCD screen, allowing users to intuitively understand voltage conditions.

Automatic Range Selection: Some digital voltmeters feature automatic range selection, which automatically selects the appropriate measurement range based on the size of the measurement signal, facilitating user operation.

Data Hold: Digital voltmeters can temporarily hold measurement results on the screen through the data hold function, allowing users to view them at any time and prevent data loss during the measurement process.

Peak Hold: Some digital voltmeters are equipped with a peak hold function, which automatically records and displays the maximum or minimum value in the measurement signal, helping users capture transient signals.

Phase Detection: Some advanced digital voltmeters also have phase detection capabilities, enabling the measurement of phase differences in AC power sources, which is useful for determining the relationships between various components in a circuit.

Temperature Compensation: Some digital voltmeters feature temperature compensation, which corrects measurement results to ensure accurate voltage values under different temperature conditions.

Automatic Shutdown: To conserve battery power or extend instrument life, some digital voltmeters are equipped with an automatic shutdown function that turns off the device automatically after a period of inactivity.

Overall, digital voltmeters offer a variety of practical functions that cater to different measurement needs, enhancing measurement efficiency and accuracy.