User`s guide

7-29
Operating Concepts
Analyzer Display Formats
SWR Format
The softkey reformats a reflection measurement into its equivalent SWR (standing
wave ratio) value. See Figure 7-12. SWR is equivalent to (1 + ρ)/(1 −ρ), where ρ is the
reflection coefficient. Note that the results are valid only for reflection measurements. If
the SWR format is used for measurements of S
21
or S
12
the results are not valid.
Figure 7-12 Typical SWR Display
Real Format
The softkey displays only the real (resistive) portion of the measured data on a
Cartesian format. See Figure 7-13. This is similar to the linear magnitude format, but can
show both positive and negative values. It is primarily used for analyzing responses in the
time domain, and also to display an auxiliary input voltage signal for service purposes.
Figure 7-13 Real Format
SWR
REAL