5.View the S21 measurement. If the thru is connected, the transmission coefficient should be 1 ∠0° .
6.Press PARAMETER [S12], then press the following DISPLAY: menu keys:
{SELECT DEFAULTS}
{DEFAULT to MEMORY: 2}
7.Press PARAMETER [S12] to view the S12 measurement. If the thru is connected, the transmission coefficient should be 1 ∠0° .
Normalization is turned OFF for S11 and S22 measurements. Then the appropriate memory is selected and normalization is turned on to view S21 and S12.
Since these are accurate, repeatable attenuators, this sequence may be effective in your application. If other parts of the test must be changed, especially components connected to the test ports, this procedure may require additional steps to adequately compensate for the changes.
HP 8517B