Chapter 9
335
Analysis in Time Domain (Option 010)
Transformation to time domain
9.
Analy
sis in T
ime Domain
(O
ption
010
)
Selecting a type
There are two types of transformation to the time domain: band pass and low pass. The
appropriate transformation type depends on the DUT.
Comparison between band pass mode and low pass mode
Item
Band pass
Low pass
Appropriate DUT
DUTs that do not operate with dc current
such as band pass filters.
DUTs that operate with dc current such as
cables.
Input signal
You can simulate the response to the
impulse signal.
You can simulate the TDR measurement.
You can simulate the response to both the
impulse signal and step signal.
Selection of the
sweep range
You can select the sweep range arbitrarily.
Because dc data are estimated from the
first few points, the frequencies of
measurement points must be multiples of
the start frequency.
Transmission/
reflection
measurement
You can perform both transmission and
reflection measurements.
You can perform both transmission and
reflection measurements.
Identification of
mismatches
You can identify the locations of
mismatches.
You can identify the locations of
mismatches and the type of impedance
(capacitive or inductive).
Resolution
The resolution in the time domain
increases by two times over that in the
band pass mode.
Available data
format
R
Liner magnitude format
•
In the reflection measurement, it
indicates the mean of the reflection
coefficient within the frequency
sweep range.
•
In the transmission measurement,
it indicates the mean of the
transmission coefficient within the
frequency sweep range.
R
Log magnitude format
•
In the reflection measurement, it
indicates the mean of the return
loss within the frequency sweep
range.
•
In the transmission measurement,
it indicates the mean of the
transmission gain within the
frequency sweep range.
R
SWR format
•
In the reflection measurement, it
indicates the mean of SWR
(standing wave ratio) within the
frequency sweep range.
R
Real format
•
In the low pass mode, the real
format is useful because the time
axis data do not have phase
information.
Summary of Contents for E5070B
Page 6: ......
Page 30: ...24 Contents ...
Page 34: ...28 Chapter1 Precautions Before contacting us ...
Page 286: ...280 Chapter6 Data Analysis Using the Equation Editor ...
Page 430: ...424 Chapter12 Optimizing Measurements Performing a Segment by Segment Sweep segment sweep ...
Page 538: ...532 Chapter15 Measurement Examples Executing Power Calibration ...
Page 634: ...628 AppendixB Troubleshooting Warning Message ...
Page 732: ...726 AppendixD Softkey Functions Trigger Menu ...
Page 740: ...734 AppendixE General Principles of Operation Data Processing ...
Page 760: ...754 AppendixF Replacing the 8753ES with the E5070B E5071B Comparing Functions ...