Using a Digital Multimeter

What are the three traditional meters?

• Analog voltmeter

• Ammeter

• Ohmmeter

When combing the three traditional instruments into one device, what is it called?

Multimeter or VOM (volt-ohm-milliammeter)

What advantage do digital multimeters and digital voltmeters have over traditional ones?

• Easier to read

• Greater accuracy

• Higher input resistance than older analog meters

In a DVM, what effect does the higher input resistance have?

Minimizes current draw

What does minimize current draw result in, in a DVM?

Results in less loading effect on circuit

What is the acronym DMM stand for?

Digital multimeters

What does the acronym DVM stand for?

Digital voltmeters

What is troubleshooting?

Process of recognizing symptoms, finding causes, locating faults

What two things must you know beforehand to troubleshoot a circuit?

• How the circuit operates

• How to use the test equipment

What is a short circuit?

Unintended low resistance path

What can short circuit cause?

• High current

• Damage

What does open circuit mean?

Incomplete path