Measuring Voltage with an Oscilloscope: Channel A RMS Voltage

AI Thread Summary
An oscilloscope measures voltage across components using Channel A and Channel B, allowing for the deduction of RMS voltage from Channel A's readings. To deduce the RMS voltage, one can either read it directly from the oscilloscope or calculate it using the peak voltage (Vmax) for a sine wave by dividing the amplitude by the square root of 2. The discussion clarifies that calculating Vrms is necessary if it is not directly displayed. Understanding these methods is essential for accurate voltage measurement. Overall, the conversation emphasizes the importance of knowing how to derive RMS voltage from oscilloscope data.
real-menace
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1. An oscilloscope is used to measure the voltage across
two components using Channel A and Channel B. Deduce the RMS voltage of the signal measured by
Channel A

I just want to know what they mean by "deduce the RMS voltage"

Do i need to calculate the Vrms?
 
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real-menace said:
Do i need to calculate the Vrms?

Based on the readings that you can get from the oscilloscope, you should either be able to get Vrms directly or Vmax to get Vrms.
 
It sounds like it, assuming it's a sine wave take your amplitude and divide it by the square root of 2.
 
ok Thanks for the reply :)
 

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