Find the Volts/Div Scale: A Quick Guide

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SUMMARY

The discussion focuses on calculating the volts/div scale for a sinusoidal waveform output from a function generator. The output is measured at 6 voltage divisions peak-to-peak, with a voltmeter reading of 2.12V RMS. To find the volts/div scale, one must divide the total voltage range by the number of divisions on the scale, confirming that if the voltmeter is set to a 6V range with 6 divisions, each division represents 1 volt. The conversation highlights the importance of understanding the difference between peak voltage and RMS voltage in this context.

PREREQUISITES
  • Understanding of sinusoidal waveforms and their measurements
  • Knowledge of RMS voltage and its calculation
  • Familiarity with oscilloscopes and voltmeters
  • Basic concepts of voltage division in electrical circuits
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  • Learn how to calculate RMS voltage from peak voltage
  • Study the operation and settings of oscilloscopes
  • Explore voltage division principles in electrical engineering
  • Investigate different types of voltmeters and their measurement ranges
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Electronics students, engineers, and technicians who are working with oscilloscopes and voltmeters, particularly those involved in waveform analysis and voltage measurement techniques.

EEKid
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Hey guys

If the output of the function generator for a sinusoidal waveform is 6 voltage divisons peak to peak along the voltage axis- and the voltmeter reads 2.12v, find the volts/div scale that is being used?

for this do just divide the volt given by the division given?, please help,(pretty new)


thanks a lot
 
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Anyone, really need with this by today?

sorry and thanks again
 
The voltmeter will measure RMS voltage for a.c.
 
how do use the voltage to find the scale? sorry really new
 
Well the peak voltage is 3 volts. Correct? Now what is the effective voltage (root-mean-square, RMS)?
 
2.12, .707(3), which is the value from the voltmeter
 
Okay. I'm not sure what you're are really asking. A volt is a volt. On your scope you are seeing 6 volts p-p (1volt per division) on your rms meter you are seeing 2.12 volts (what scale on your meter are you using here?)
 
Last edited:
How did u know that it is 1 volt per divison, thanks, i think that is what i wanted
 
Last edited:
By scale, I mean what range your voltmeter was set. If for example, it was set on a 6 volts range and there were 6 division marks, then one division would be 1 volt. If there were 12 division marks, then one division would be 0.5 volt. Now your meter might be good enough to have a division mark for every 0.1 volt, the volt/div would be 0.1. i.e. for your meter, take the full range voltage and divide by the number of divisions on the scale. I guess that is what you were thinking in the first place. Sorry.

Regards
 
  • #10
Do you mean volt meter or oscilloscope?
 

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