The S-Parameter Menu; Analog In Menu; Conversion Menu - Agilent Technologies 8719D User Manual

S-parameters are exactly equivalent to the more common description terms below, requiring
only that the measurements be taken with all test device ports properly terminated.
S-parameter

The S-Parameter Menu

The S-parameter menu allow you to dehne 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 comer of the display.
The S-parameter menu contains the following softkeys:
n
. Tram: FWD S21 (B/R)
. R V s12 (A/R)
E
Refl: REV S22 (B/R)
n
n
. CflNVERSION [ 1 provides access to the conversion menu.
INPUT PORTS provides access to the input ports menu.
n

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 Chapter 10, 'Service Key Menus
Messages"
in the HP 8719D/ZOD/ZZD Network Analgzer 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 SII or S22 trace measured as reflection can be converted to equivalent parallel impedance or
admittance using the model and equations shown in Figure 6-10.
Test set
Description
Input reflection coe5cient
Forward gain
Reverse gain
Output reflection coe5cient
Application and Operation Concepts
Direction
FWD
FWD
REV
REV
Error
and