Agilent Technologies E5070B, User Manual

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Table 3-3 Eight types of rectangular display formats
Type Y-axis Data Type Y-axis Unit Application Examples
Log magnitude format Magnitude dB •Return loss measurement
•Insertion loss measurement (or
gain measurement)
Phase format Phase (displayed in range from
−
180
°
to
+180
°
)
Degrees (
°
) •Measurement of deviation
from linear phase
Expanded phase format Phase (can be displayed above +180
°
and
below
−
180
°
)
Degrees (
°
) •Measurement of deviation
from linear phase
Positive phase format Phase (displayed in range from 0
°
to
+360
°
)
Degrees (
°
) •Measurement of deviation
from linear phase
Group delay format Signal transfer delays within the DUT Seconds (s) •Group delay measurement
Linear magnitude format Magnitude (Abstract
number) •Reflection coefficient
measurement
SWR format
1
ρ
+
1
ρ
–
------------ (
ρ
: reflection coefficient)
(Abstract
number) •Measurement of standing wave
ratio
Real format Real part of measured complex parameter (Abstract
number)
Imaginary format Imaginary part of measured complex
parameter (Abstract
number)
82 Chapter 3
Setting Measurement Conditions
Selecting a Data Format
Polar format
In the polar format, traces are drawn by expressing the magnitude as a displacement from
the origin (linear) and phase in an angle counterclockwise from the positive X-axis. This
data format does not have a stimulus axis, so frequencies must be read by using the marker.
The polar format allows users to select one of the following three data groups for
displaying the marker response values.
• Linear magnitude and phase (
°
)
• Log magnitude and phase (
°
)
• Real and imaginary parts
Figure 3-9 Polar format