![]() ![]() In other words- Higher numbers mean more resistance. NOTE: if you don't have the audible beep, then this is also the resistance setting: 0 is no resistance and 100 is no current. OR if no beeps, check the meter: 0 is a closed circuit, ol or 100 is an open circuit. This Digital Multimeter is intended for INDOOR USE ONLY. If it beeps (if it has audible indicator) then you have a closed circuit, and it WILL conduct electricity. You can wreck the psu and the meter that way! Then put the red connector (end of the pen I believe) on the red (hot 5v) wires connectorĭO NOT ALLOW THE METAL PARTS OF THE METER'S PROBES TO CONTACT EACH OTHER! Put the black meter lead on one of the black (ground) wire connectors in the molex Turn the meter on and set it for DC voltage If yours is like my meter, you'll have a lot of other settings. Voltage (V), resistance (), diode test (arrow plus symbol), capacitance (other symbol), temperature. Never, ever, measure amperage across something (even a small battery). You have to put it into the loop, and that usually requires cutting wires. It measures current flow, but most of the time that isn't very useful. Use it to tell if a wire is broken of if you're grounded somewhere you shouldn't be.Īmperage measured with the A settings (one for DC and one for AC). Resistance tells you how non-conductive something is, and it's measured in ohms with the omega setting on the dial (if you don't know, looks kinda like a horse-shoe).Ĭontinuity tells you if there's an electrical connection between the tips. By learning how to use this equipment, it is possible to troubleshoot controllers, solenoids, field wiring, and to verify AC and DC voltage levels. If you try to measure voltage in series (that is, putting the multimeter into the loop) you're not measuring what you think you're measuring. Multimeter Operation Multimeters A multimeter is an inexpensive piece of test equipment that is capable of measuring AC volts, DC volts, and resistance. from one prong in a half plugged-in plug to the other. You always measure voltage _across_ something. DC has the two parallel lines where one is dashed. There are two forms of voltage measurement: AC and DC. 22-812 to make sure its still fully functional and reliable Im using it to test my. The most important features for you are going to be voltage, resistance, continuity, and perhaps amperage. How should I troubleshoot an old Radio Shack Digital Multimeter CAT NO. By pen style I assume you mean the probes are like pens (if the whole thing is like a pen, then I have no idea). ![]()
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