Digital multimeters
An in-depth look at an indispensable tool
How to measure ac voltage
How to measure frequency
How to measure capacitance
How to test for continuity
How to test diodes
How to measure current with a clamp accessory
How to measure duty cycle
How to measure resistance
Why ruggedness matters in a digital multimeter
How to measure dc voltage with a digital multimeter
Safety tips
How to verify electrical test tool operation with a proving unit
How to troubleshoot a pump control panel with a thermal multimeter
How to validate a pump control panel repair with a thermal multimeter
What is a thermal multimeter?
