Keysight B Series - NA Mode Settings; About S-Parameters

Keysight N9938-90003 User’s Guide 65
NA (Network Analyzer) Mode
NA Mode Settings
NA Mode Settings
Select NA Mode before making any setting in this chapter.
How to select NA Mode
—Press Mode_
.
—Then NA
.
About S-parameters
S-parameters (scattering parameters) are used to describe the way a device
modifies a signal. The FieldFox can measure four S-parameters. The syntax for
each parameter is described by the following:
S (out | in)
out = FieldFox receiver port
in = FieldFox source port
The FieldFox automatically switches the internal source and receivers to make
both forward and reverse measurements. Therefore, the FieldFox can measure
all four S-parameters with a single connection
When the source comes from port 1, the measurement is said to be in the
forward direction
When the source comes from port 2, the measurement is said to be in the
reverse direction
S11 and S22 reflection measurements are used to measure the amount of
reflections off the corresponding DUT port. Low reflections means there is a
good impedance match between the source and DUT.