Testing Input SignalsA few rules apply to testing intput circuits:NEVER substitute a test light for a Digital Multi-Meter or vice-versa.NEVER use a test light with a hot resistance of lower than 20 ohms when testing intput signals tocomputers. Back-probing terminals is done when live circuit measurements are required. It is always better toback-probe a terminal than it is to pierce a wire's insulation to obtain a measurement. Insert a long
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Test method, input signals, 20 ohms, Digital Multi-Meter, testing intput signals