The S-Parameter Menu - Agilent Technologies 8719ES User Manual

Operating Concepts
S-Parameters

The S-Parameter Menu

The S-parameter menu allows you to define the input ports and test set direction for
S-parameter measurements. The analyzer automatically switches the direction of the
measurement according to the selections you made in this menu. Therefore, the analyzer
can measure all four S-parameters with a single connection. The S-parameter being
measured is labeled at the top left corner of the display.
The S-parameter menu of the ES model analyzer contains the following softkeys:
•
Refl: FWD S11 (A/R)
•
Trans: FWD S21 (B/R)
•
Trans: REV S12 (A/R)
•
Refl: REV S22 (B/R)
•
ANALOG IN Aux Input
•
CONVERSION [ ]
• accesses the input ports menu.
INPUT PORTS
The S-parameter menu of the ET model analyzer contains the following softkeys:
•
REFLECTION
•
TRANSMISSN
•
ANALOG IN Aux Input
•
CONVERSION [ ]
• accesses the input ports menu.
INPUT PORTS
Analog In Menu
This menu allows you to monitor voltage and frequency nodes, using the analog bus and
internal counter. For more information, refer to the "Service Menus and Error Messages"
chapter in the service guide.
Conversion Menu
This menu converts the measured reflection or transmission data to the equivalent
complex impedance (Z) or admittance (Y) values. This is not the same as a two-port Y or Z
parameter conversion, as only the measured parameter is used in the equations. Two
simple one-port conversions are available, depending on the measurement configuration.
An S or S trace measured as reflection can be converted to equivalent parallel
11 22
impedance or admittance using the model and equations shown in
7-22
accesses the conversion menu.
accesses the conversion menu.
Figure 7-4.