Can you explain this o-scope reading ?

[Hextejas]

The voltage is .627 according to the meter, the volts/div is set to 1.
I expected the curve on the scope to only occupy about .62 of 1 box. I don't know what to call the gradient lines. The scope seems to see 2 volts ac. So where is it getting it ?

Thanks

[DaJMasta]

What's the source?  What's your termination impedance?  Does the meter you're using actually have the bandwidth required to measure the signal you're looking at?

[xrunner]

The voltage is .627 according to the meter, the volts/div is set to 1.
I expected the curve on the scope to only occupy about .62 of 1 box. I don't know what to call the gradient lines. The scope seems to see 2 volts ac. So where is it getting it ?

Thanks

According to "the meter" meaning an external DMM set to AC?

If you see 2 volts peak-to peak on the scope the DMM (if that's what it is you mean by meter) would (should) read .707 RMS, so perhaps your meter is a bit off. Not sure what the set up is though ...

[macboy]

The voltage is .627 according to the meter, the volts/div is set to 1.
I expected the curve on the scope to only occupy about .62 of 1 box. I don't know what to call the gradient lines. The scope seems to see 2 volts ac. So where is it getting it ?

Thanks

What you are seeing is correct.

A sine wave with 2.0 V_P-P (Volts peak to peak) has a RMS value of 0.707 V_RMS.  Other waveforms have similar relations: e.g. a 2.0 V_P-P triangle wave is 0.58 V_RMS. You may need to study what RMS voltage means in order to understand.

Your multimeter may read a little lower than the real RMS value depending on the frequency, as all multimeters have an upper limit and the response rolls off (decreases) above a certain frequency. This probably explains why it indicates 0.627 instead of 0.707. If you try a lower frequency (e.g. 50 Hz) then the reading can be trusted more. 

[Fungus]

The voltage is .627 according to the meter, the volts/div is set to 1.
I expected the curve on the scope to only occupy about .62 of 1 box. I don't know what to call the gradient lines. The scope seems to see 2 volts ac. So where is it getting it ?

Thanks

The meter will show "RMS" of the voltage - ie. the average, not the peaks.