According to the Broadcast user's manual it means "Modulation Error Ratio (MER)":
"The MER indicates the ratio between the wanted vector and the error vector and is normally expressed in dB. Thus a high MER figure shows that the error vector is small compared with the wanted vector and in consequence there should be little difficulty in correctly decoding the data represented by the carrier phase and amplitude. For a compliant DRM transmitter, an MER of 30dB or greater should be expected."
Last edited by Digger : 09-08-2014 at 08:12.