[Nuglets]

I currently have a Radio Shack digital meter and a YPAO mic that came with my Yamaha reciever. Does anyone know how accurate this mic is? Also I can't seem to figure out how to calibrate it to the correct level. I get a reading in the mic's dB SPL but the bar labeled dB F does not move on the mic side. I get a graph that focuses around 75dB but before it shows me the graph a warning message pops up telling me that the input measurement is far too low. I am going to mess with the input volume manually to see if that helps. Will I want to compensate for c-weighting with the YPAO mic? Thanks.