Chapter 4
169
Calibration
Adapter Removal-Insertion
4. Cal
ibra
tion
About Adapter Insertion
This above described method also makes it possible to add adapter characteristics to a port
with full n-port calibration. This allows you to make a measurement with the adapter.
E5070B/E5071B uses the following adapter insertion process to insert adapter
characteristics.
1. Perform calibration without the adapter in use.
2. Insert the adapter to the port and measure Open, Short and Load values to determine
the adapter’s characteristics.
3. Insert the obtained adapter characteristics to the error coefficients in an De-embedding
fashion.
In order to determine the adapter characteristics (with four unkown parameters) by making
three measurements (Open, Short and Load), the adapter must satisfy the following
requirements.
•
Adapter must be reciprocal (with S21 and S12 equal) in nature. It should have a
consistent behavior, independent of the direction from which it is used.
•
The electrical length of adapter should be known at an accuracy of
±
1/4 of wavelength.
Figure 4-45
Adapter insertion for E5070B/E5071B
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 ...