digital multimeter , DMM (abbreviation)

A digital multimeter makes a good frequency meter with the addition of the circuit shown.

This form of encoder is now rarely seen except in digital multimeters.

A digital multimeter, using active electronics, may instead pass a specified current through the test resistance.

Modern digital multimeters may have an embedded computer, which provides a wealth of convenience features.

Some instruments combine the functions of a digital multimeter with the oscilloscope.

On some digital multimeters it can be configured, with higher resolution measurements taking longer to complete.

Digital multimeters generally take measurements with accuracy superior to their analog counterparts.

A digital multimeter displays the quantity measured as a number, which eliminates parallax errors.

Some digital multimeters include a fast-responding bargraph display for this purpose, though the resolution of these is usually low.

Such measurements can be done for signals too high in frequency for measurement by an analog or digital multimeter.

Digital multimeters may also include circuits for:

The first digital multimeter was manufactured in 1955 by Non Linear Systems.

(therefore it be performed with a digital multimeter)

Assuming that a 3 digit digital multimeter is available, the instrument will provide readings over the range 1nF to 1.999 F.

This type was often used with oscilloscopes, and with high-end computerized digital multimeters, however, they are becoming common place for more general use.

A digital multimeter is completely unsuitable because of the difficulty in quickly assessing the direction of the voltage gradient.

Digital multimeter (this is just simulative)

Standard portable digital multimeters are specified to have an accuracy of typically 0.5% on the DC voltage ranges.

Digital multimeters are sometimes called DMM too.

Multimeter Tutorial - Lots of useful information on Digital multimeter usage.

As Tektronix fabricated more specialized parts, they spread out their product base to include logic analyzers, digital multimeters and signal generators.

For example, in early digital multimeters, true RMS functions were provided by external analog multiplier circuits.

In a digital multimeter the signal under test is converted to a voltage and an amplifier with electronically controlled gain preconditions the signal.

Some Soviet hackers managed to modify B3-34 into digital multimeters, control interfaces for model railroads, added tape storage devices and other peripherals.

Beginners' Guide to the 830B Multimeter - Discusses the many uses of a cheap digital multimeter in the home.