# Volts/Div Scale

1. Oct 7, 2007

### EEKid

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?

thanks a lot

2. Oct 7, 2007

### EEKid

Anyone, really need with this by today?

sorry and thanks again

3. Oct 7, 2007

### dlgoff

The voltmeter will measure RMS voltage for a.c.

4. Oct 7, 2007

### EEKid

how do use the voltage to find the scale? sorry really new

5. Oct 7, 2007

### dlgoff

Well the peak voltage is 3 volts. Correct? Now what is the effective voltage (root-mean-square, RMS)?

6. Oct 7, 2007

### EEKid

2.12, .707(3), which is the value from the voltmeter

7. Oct 7, 2007

### dlgoff

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: Oct 7, 2007
8. Oct 7, 2007

### EEKid

How did u know that it is 1 volt per divison, thanks, i think that is what i wanted

Last edited: Oct 7, 2007
9. Oct 7, 2007

### dlgoff

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. Oct 8, 2007

### Corneo

Do you mean volt meter or oscilloscope?