The calibration utility function and management menus and dialog boxes are:

 

 

The CAL OPTIONS menu and related sub-menus provide access to advanced calibration options either before or after a calibration procedure has been completed.

 

 

 

Use the Flexible Cal Setup dialog box to define a calibration sub-set of the currently active calibration.

 

 

The flexible calibration setup feature makes it possible to select a subset of the S-Parameters to be corrected from the available full-term calibration.

 

 

Use manual adapter removal to extract the electrical behavior of an adapter after a successful calibration procedure. This is especially useful when the DUT configuration is not entirely compatible with common calibration procedures such as having different connectors at each end.

 

Adapter removal permits accurate measurement of non-insertable devices. The process involves using an adapter of known electrical length and performing two full 12-term calibrations. In the procedure below, the Y file is the file with the calibration when the adapter connected to port 1 and the X file is the file with the calibration when the adapter connected to port 2.

Calibration merge allows merging two calibration files into a single file where the prior calibrations can use different methods (such as SOLT and SSLT) at different frequencies. The calibrations must be the same calibration type (such as Full 1 Port) and be available on the instrument hard drive. Calibration merge has other requirements (described below) as to the number of points, start and stop frequencies, and front panel settings.

 

Calibration merge (cal merge) allows the merging of two RF calibration files into a single file. The RF calibrations can use different methods and different frequencies.

 

 

 

 

A hybrid calibration takes two 1-port calibrations and hybridizes them into a 2-port calibration. This allows a mixed-media calibration for a device that may have both coaxial and waveguide connections. It also allows 2-port calibrations where the two 1-port calibrations are not restricted to the same type such as.

In the File 1 field, select the Browse button to navigate to the appropriate Channel Setup and Calibration (CHX) file for the first calibration.

Repeat for the File 2 field.

The figure shows the relationship between the two ports and the Thru 1-2 Info button is automatically selected.

When both files have been identified, select OK to return to the HYBRID CAL menu.

 

 

The network extraction features provides a method of generating an S-Parameter (.s2p) file for a set of networks. The.s2p file can then be embedded or de-embedded into the error coefficient of the VNA as required. Four extractable network configurations are provided:

 

 

The network extraction feature provides the method for generating the S-Parameter for a given set of networks. This generated.s2p file can then be embedded or de-embedded into the error coefficient for the VNA at a later stage. The dialog box provides four extraction choices accessible via large buttons. Each choice provides a separate configuration dialog box as described in the sections below.

 

Network Extraction provides the means of generating SnP files of networks. The generated files can then be embedded or de-embedded. Based on the type of extraction chosen, multiple SnP files may be generated, as shown in the graphics for each extraction type. Port Swapping can be performed in the Embedding/De-embedding menus.

All calibration files must be:

 

 

 

 

Network Extraction provides the means of generating SnP files of networks. The generated files can then be embedded or de-embedded. Based on the type of extraction chosen, multiple SnP files may be generated, as shown in the graphics for each extraction type. Port Swapping can be performed in the Embedding/De-embedding menus.

 

 

 

 

Network Extraction provides the means of generating SnP files of networks. The generated files can then be embedded or de-embedded. Based on the type of extraction chosen, multiple SnP files may be generated, as shown in the graphics for each extraction type. Port Swapping can be performed in the Embedding/De-embedding menus. All calibration files must be:

 

 

 

 

Network Extraction provides the means of generating SnP files of networks. The generated files can than be embedded or de-embedded. Based on the type of extraction chosen, multiple SnP files may be generated, as shown in the graphics for each extraction type. Port Swapping can be performed in the Embedding/De-embedding menus.

These extraction types are for cases where an inner-cal is not possible. The network measured is assumed symmetrical, and SnP files generated using Divide by 2 schemes. An option is given to zero-out the match terms instead of fully allocating them to the outer-ports.

 

 

The USER DEFINED MATCH DEVICES dialog box only appears if Device 2 or Device 4 is set to Match and the user clicks the Match Info button.

Select displays the MICROSTRIP INFO Dialog Box shown below. In this example, the 25 Mil Kit was selected.

Select displays the Standard Info (SOLT/R) K-Conn (M) Dialog Box shown below. In the example below, K-Conn (M) was selected for a Test Port 1 DUT Connector.

 

The Standard Info dialog shows the applicable calibration parameters for Test Port 2.

 

 

Select displays the STANDARD INFO (SOLT/R) STANDARD LABEL (V-Conn M) Dialog Box shown below. Note that the name of this dialog changes depending on the selected Cal Method and DUT Connector. In the example below, V-Conn (M) was selected for a Test Port 1 DUT Connector.

The Standard Info dialog shows the applicable calibration parameters for Test Port 1.

 

Use the CAL KIT/AUTOCAL menu to install, save, and restore calibration kit characterization files between an external memory device, the instrument firmware, and a hard drive on the instrument or on a network.

 

 

 

Use the INSTALL (AUTOCAL CHARACTERIZATION/CAL KIT) dialog box to install the calibration kit coefficients file or AutoCal Characterization files in the instrument firmware for subsequent use. A recommended best practice is to keep the cal kit serial number as part of the file name.

 

 

 

 

Use the SAVE (AUTOCAL CHARACTERIZATION/CAL KIT) dialog to save a Calibration Kit Coefficients file or an AutoCal Characterization file from the VNA firmware to external location such as the instrument hard drive, a network drive, or an external memory device. This is useful for storing in the instrument hard drive multiple files from available cal kits or AutoCal modules.

An alternate method is to use a Windows program such as File Manager to copy the file from the supplied USB memory device onto the hard drive. In that case, we recommend using the default locations mentioned later in this paragraph.

 

The available buttons and fields on the dialog depend on the radio button selection in the Select File Type area.

If Cal Kit is selected, the fields of Line Type, Cal Method, and Cal Kit Name are available (shown at right in SAVE (AUTOCAL CHARACTERIZATION/CAL KIT FILE Dialog Box above) with the values in drop-down menus.

Use the CAL KIT INFO dialog box to review the available instrument calibration kit information.

 

The available buttons and fields on the dialog depend on the radio button selection in the Select File Type area.

 

 

 

Use the RESTORE DEFAULT COEF. dialog box to restore firmware-stored Cal Kit Coefficients fields back to their default coefficients. For best performance, either install the cal kit coefficients file supplied with your cal kit, or enter your user-defined coefficients before starting this procedure. The restore function is not available to AutoCal kits as they do not have restorable characterization data.

 

 

Use this dialog to restore factory coefficients to available calibration kits.

The table below shows the available calibration kits in the Select Cal Kit field of the RESTORE DEFAULT COEFFICIENTS dialog box. The available kits depend on the input combination selected for Line Type Media and Cal Method