Multimeter Operation: Radio Shack 22-179
Multimeter Operation Multimeters A multimeter is an inexpensive piece of test equipment that is capable of measuring AC volts, DC volts, and resistance. By learning how to use this equipment, it is possible to troubleshoot controllers, solenoids, field wiring, and to verify AC and DC voltage levels. Electrical Terms AC volts (VAC) - Alternating Current, this is household voltage. Most irrigation solenoids operate on AC voltage. Rain Bird voltage specifications are 117 VAC ± 10% (105 - 129) volts. DC volts (VDC) - Direct Current, the normal source is a battery. DC voltage is polarized, meaning that there is a...