An undesirable signal that is irregular and is riding on top of the desired signal. Normal Mode Voltage Voltage on the Line or Hot wire of the power wiring, compared to the neutral wire. Oscilloscope A measuring instrument which gives a visual display of voltage, current, or power waveforms. A picture of a voltage, current or power waveform taken from an oscilloscope. The maximum current value as measured from a reference in a given period of time.
Power is the product of volts and amps.
Pulse A pulse is generally a unipolar voltage or current with defined characteristics, which occurs infrequently. Resistance A property of electrical conductors or electrical insulators which characterizes their ability to conduct or resist the flow of electricity. SPD Surge Protection Device. SV Suppressed Voltage, see Let-Through Voltage. SVR Suppressed Voltage Rating.