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The screen dump provides the following info where the NF of the LNA itself is assumed to be 0.6191 dB and the dissipative loss of all DUTs are assumed to be 0.1084 dB. The average of NONE is 0.0399 dB which means that (0.0399 - 0.6191 + 0.1084) = -0.4708 dB has to be added to levels with cable combinations to get the corresponding NF values with negative sign. DUT Level NF NONE -0.0466 0.6191 DUT231 -0.1954 0.6662 DUT213 -0.1675 0.6383 DUT132 -0.1949 0.6657 DUT312 -0.1726 0.6434 None -0.0332 0.6191 |