Digital Volt/Ohm Meter (DVOM)

Digital Volt-Ohmmeter:

PURPOSE
Like an analog meter, a digital Volt/Ohm meter, can be used to measure and compare actual values with expected circuit values.

ADVANTAGES OF DIGITAL METERS OVER ANALOG METERS
A digital Volt/Ohm meter has a numerical readout, which is more precise than the needle reading on an analog meter.

A digital Volt/Ohm meter has a higher internal impedance (10 Meg Ohms typical), which prevents loading or damaging digital (computer related), circuits.

VOLTMETER CAUTION: When measuring voltage always connect meter in parallel to a circuit or component. Connecting a voltmeter in series with a circuit may damage the voltmeter and/or the circuit.

OHM METER CAUTION: Always disconnect any voltage sources from the circuit or component, before attempting to measure resistance of a circuit or component. Connecting an ohmmeter to a circuit while voltage is present will damage the meter and/or the circuit.