Converting Reference Impedance Of Balanced Port - Agilent Technologies ENA Series User Manual

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Converting Reference Impedance of Balanced Port

By using the port impedance conversion function, you can specify the impedance of each

test port. As a result of this conversion, the impedance of the balanced port in differential

mode is set to a value twice as large as the impedance of the two unbalanced ports before

conversion, and in common mode to a value one-half as large (Figure 7-17).

Be sure to set the impedances of the two unbalanced ports equal to each other. For more

details on setting up port impedance for unbalanced ports, refer to "Converting the Port

Impedance of the Measurement Result" on page 286.

Port impedance after a balance-unbalance conversion

As described above, the impedance of the balanced port is automatically specified as the

result of specifying the impedance of the two unbalanced ports prior to balance-unbalance

conversion. However, the port impedance can be changed to an arbitrary value by using the

differential port impedance conversion function and the common port impedance

conversion function.

E5070b E5071b