Agilent Technologies N4413A User Manual page 79

In the multiport test system, the variable name Z
The following table summarized the correct expression for Z
Port Mode
1 N/A
2 Differential
2 Common
Therefore, the impedance on each port can be calculated in the user-defined display as follows:
Port Mode
1 N/A
2 Differential
2 Common
For information regarding user-defined displays, refer to
Displays" on page 49
Chapter 3
Reference Impedance (Z
Z1
(Z2+Z3)
(Z2*Z3)/(Z2+Z3)
Port Impedance
Z1*(1+S11)/(1-S11)
(Z2+Z3)*(1+SDD11)/(1-SDD11)
(Z2*Z3)/(Z2+Z3)*(1+SCC11)/(1-SCC11)
and "How to Use User-Defined Displays" on page
How to Calculate Impedance Looking into a Device Port
is the reference impedance of terminal "n".
n
:
R
)
R
"How to Set Up User-Defined
Using the Multiport Test System
65.
69