Electrical Testing | Digital Volt/Ohm Meter


Digital Volt/Ohm Meter

A Digital Voltage Ohm Meter may more commonly be known as a DVOM or a multimeter. This device can be used to measure AC voltage, DC voltage, resistance, and current.

One of the biggest advantages of a DVOM is the accuracy. Most quality meters claim to have a +/- 0.01% or better accuracy. This is clearly more accurate than trying to interpret the amount of voltage based on how brightly a test light is illuminated!

While the accuracy of the meter is beneficial for measuring voltages, current, or resistance, there are several pitfalls that technicians need to be aware of when using a DVOM to test a circuit.

For rapidly changing voltages, such as, when testing a sensor signal or a data network the meter can’t update fast enough and displays an average measurement of voltage potential. For these type of test you will need to use a Digital Storage Oscilloscope.

This post was written by: Martin Hand


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Martin Hand

About Martin Hand

ASE Certified L1 Advanced Mastertech. Martin Hand has over 15 years experience in Asian and European Import Auto Repair. Specializing in electrical diagnosis, engine performance, AT/MT transmission repair/rebuild. Martin is also pursuing a degree in Computers Science & Information Systems starting at Portland Community College while he plans to transfer to OIT. Certified in Java application level programming, experienced with other languages such as PHP, Ruby, JavaScript and Swift. Martin has future plans of automotive diagnostic software development.

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