Can I make a two-tone intermodulation distortion measurement and extrapolate to get CTB, CSO and crossmodulation?
You can certainly obtain data this way, but the question is how well do these measurements correlate to “real” data. For perfect conditions the measurement of two-tone second order and third order distortions should allow the calculations of all other conditions. See MTN-109 for simple calculations. Experience has shown that extrapolation to multiple frequency measurements results in unacceptable variations.
