Andreas - the point Stephen is making, further to Mark's earlier post, is that we should ask some questions about testing methodologies, sources of error/distortion etc. Otherwise we may not know how to interpret the results, or apply them in a meaningful way to different situations, in which case we can't be sure we're better or worse off than simply using the manufacturer's instructions.
For example, flare is a significant factor which is often overlooked in typical zone system testing methods.
Last edited by Michael R 1974; 01-14-2013 at 10:10 AM. Click to view previous post history.