The top line is solid whereas the bottom line is dotted. In other words- Higher numbers mean more resistance. The symbol on a multimeter to represent DC millivolts is represented by the letters mV (millivolts) and two straight lines above. 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. If it beeps (if it has audible indicator) then you have a closed circuit, and it WILL conduct electricity. Counts Volt Meter Ohmmeter Auto-Ranging Tester Accurately Measures Voltage Current Resistance. When the points of the engine under test are closed, Q1 is off and Q2 passes current. Buy RadioShack 15-Range Digital Multimeter at Amazon. You can wreck the psu and the meter that way! Sell NEW Actron CP7605 Dwell /Tachometer/Voltmeter Analyzer in. 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. Never, ever, measure amperage across something (even a small battery). My eyes tear up just thinking back to this one as I managed to destroy it during a freak high voltage. You have to put it into the loop, and that usually requires cutting wires. RadioShack (Model 22-820) 29.99 The Radio Shack 22-820 is hands down my favorite unit. 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.
#RADIOSHARK MULTIMETER METER CURRENT SYMBOL SERIES#
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. 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. The most important features for you are going to be voltage, resistance, continuity, and perhaps amperage. 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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