I didn't realize the Meridian system was so sophisticated.
I take it you don't like the results of its Auto system ?
For sure. And you can also add a house curve file to the target reference and then hit Apply Windows to get a new result that might be better than the flat reference level.
Once you have your measurement mdat file stored you can then play around with REW off line and create all sorts of what-ifs.
brucek