Agilent Technologies ENA Series User Manual page 176

Fixture Simulator
Determining the Characteristics that Result from Adding a Matching Circuit
to a Differential Port
NOTE For a network defined in a user file, it is assumed that port 1 is connected to the test port
and port 2 is connected to the DUT.
The setup steps are shown below.
Step 1. Press
Step 2. Press
Step 3. Press
be added.
Step 4. To add a matching circuit defined in a user file, perform the following operations:
a. Press
b. Using the dialog box that appears, select the 2-port Touchstone data file (.s2p format)
Once you have specified the user file, the selection of
to
Step 5. Press
Step 6. Select a differential matching circuit model (see Figure 7-17).
Softkey
None
Shunt L - Shunt C
User
Step 7. Specify the values for the elements in the circuit model selected.
Softkey
C
G
L
R
Step 8. Repeat Step 3 to Step 7 to set up the differential matching circuit to be added to the selected
ports on the DUT.
Step 9. Press
Step 10. Press
Step 11. If
168
-
Fixture Simulator - Diff. Matching
.
Select Port
, , or to select the port on the DUT to which a differential matching circuit will
1 2 3
.
User File
for the matching circuit to be added.
. In this case, you do not have to execute Step 5 and Step 6.
User
.
Select Circuit
Function
The matching circuit is not added.
Selects a circuit model consisting of a shunt inductor and a shunt
capacitor.
Selects the circuit model defined in the user file imported in Step 4.
Function
Specifies the capacitance [F].
Specifies the conductance [S].
Specifies the inductance [H].
Specifies the resistance [W].
to turn the differential matching circuit
Diff. Matching
.
Return
is , press the key again to turn it
Fixture Simulator OFF
.
automatically changes
Select Circuit
.
ON
.
ON
Chapter 7