Agilent Technologies E5070B, User Manual

Page: 161 / 769

Chapter 4 155
Calibration
Calibration between Ports of Different Connector Types
4. Cal
ibra
tion
Calibration between Ports of Different Connector Types
When you perform calibration between ports of different connector types, you need to use
a different calibration kit for each test port. In addition, for transmission measurement
between 2 ports, you need to use adapters suitable for the connector types of both ports.
For example, in order to perform full 2-port calibration between port 1 of an N-type
connector and port 2 of a 3.5-mm connector, you need to use an N-type connector
calibration kit (for example, 85032F) for reflection measurement of port 1, a 3.5-mm
connector calibration kit (for example, 85033E) for reflection measurement of port 2, and
an N-3.5-mm adapter for transmission measurement between ports 1 and 2.
Because you cannot use a different calibration kit for each port in normal calibration of the
E5070B/E5071B, you need to use the following VBA macro to perform calibration
between ports of different connector types.
Storage folder VBA macro name (project name)
D:\Agilent AdapterCharacterization.vba
NOTE Never delete this VBA macro, since even system recovery cannot restore it.
This VBA macro lets you select a calibration kit for each test port and each pair of test
ports when performing calibration. In addition, it lets you select any adapter (2-port
Touchstone file) whose characteristics have been determined for a standard between test
ports.
NOTE This VBA macro has an adapter characterization function to obtain the characteristics of an
adapter and save them to a 2-port Touchstone file. For more information, see “Adapter
Characterization” on page 160.