Agilent Technologies E5071C Manual page 473

E5071C
Mixed mode S-parameter when measuring a balanced device
Imbalance Parameter
By turning on the balance-unbalance conversion function, you can select
the imbalance parameter of the balanced port as the measurement
parameter. The following three figures show the imbalance parameter you
can select when measuring each balanced device.
Parameter when measuring a single-ended - balanced device
(Imbalance)
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