398
Chapter 12
Optimizing Measurements
Improving Phase Measurement Accuracy
Improving Phase Measurement Accuracy
This section describes the following functions that can be used to improve phase
measurement accuracy.
•
“Electrical Delay” on page 398
•
“Setting port extensions” on page 401
•
Electrical Delay
Electrical Delay is a function that adds or removes a pseudo-lossless transmission line with
a variable length corresponding to the receiver input. Using this function enables you to
improve the resolution in phase measurement and thereby measure deviation from the
linear phase. You can specify the electrical delay trace by trace.Depending on the media
type, the calculation method of the electrical delay, which is required to correct the phase
delay, differs.
Procedure
Step 1.
Press
(or
) and
(or
) to activate the phase
trace for which you want to specify the electrical delay.
Step 2.
Press
.
Step 3.
Press
Electrical Delay
.
Step 4.
Change the electrical delay (in seconds) in the data entry area.
Step 5.
Press
Media
, and select a media type for calculating the electrical delay. If the electrical
delay is 0 second, the calculation result is always the same regardless of media type.
Softkey
Function
Coaxial
Selects Coaxial as the media type.
Waveguide
Selects Waveguide as the media type.
Step 6.
If you have selected
Waveguide
as the media type, press
Cutoff Frequency
, and specify a
cutoff frequency.
NOTE
The cutoff frequency is available only when the media type is
Waveguide
.
For how to determine the deviation from a linear phase, see “Measuring the Deviation from
a Linear Phase” on page 505.
Procedure using marker
Step 1.
Press
(or
) and
(or
) to activate the trace for
which you want to set the electrical delay.
Step 2.
Place the active marker in an appropriate position.
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 ...