Are voltage and SPL calibrations separate?

[JEJ]

I calibrated REW to specify the correct voltage in a spectrum measurement. Now I want to calibrate REW to specify the correct SPL when using a microphone. Does REW maintain separate calibration for voltage and SPL or will calibrating it for SPL mess up my voltage measurements?

 

[John Mulcahy]

They are separate.

 

[JEJ]

So, when I switch from voltage spectrum to SPL, the calibration for the spectrum will also switch from voltage to SPL?

 

[JEJ]

If I calibrate the SPL meter, will that be reflected in the RTA spectrum?

 

[John Mulcahy]

So, when I switch from voltage spectrum to SPL, the calibration for the spectrum will also switch from voltage to SPL?

Yes.

If I calibrate the SPL meter, will that be reflected in the RTA spectrum?

Yes.

 

[JEJ]

Thanks. That answers all my questions. I will purchase the Pro version for measuring in stereo.