Digital Volt/Ohm Meter (DVOM)
PURPOSE
A Digital Volt/Ohm meter, can be used to measure and compare actual values with expected circuit values.
DIGITAL METERS VERSUS ANALOG METERS
Digital Volt/Ohm meters have a numerical readout, which is more precise than the needle reading on an analog meter.
Digital Volt/Ohm meters have 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.
OHMMETER 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.