Calibration Kit Management

This section describes how to edit the calibration kit description, add and delete a calibration kit.

The Analyzer provides a table for 50 calibration kits. The first part of the table contains the predefined kits. The second part of the table is for calibration kit added by the user.

A calibration kit redefining can be required for the following purposes:

• To change the port assignment of a standard to ensure connector type (male, female) matching;
• To add a user-defined standard into the kit, e.g. a non-zero-length thru;
• To precise the standard parameters to improve the calibration accuracy.

A new user-defined calibration kit adding can be added when a required kit is not included in the list of the predefined kits.

Deleting function is available for user-defined calibration kits only.

Any changes made to the calibration kits are automatically saved into the nonvolatile memory of the Analyzer. For the saving no clicking on the Save button is required.

Table of Calibration Kits

The table of calibration kits (See Figure 57) allows selecting and editing of the calibration kits.

Figure 57 Table of calibration kits

To open the table of calibration kits, use the Cal Kits softkey.

To edit a calibration kit, highlight its line in the table.

The calibration kit editing is comprised of two main procedures: defining of calibration standard (sections 5.3.2 and 5.3.3) and assignment of classes to calibration standards (section 5.3.4). First you need to perform defining of the calibration standards, and then the assignment of classes to them. Defining of calibration standards and assignment of classes to them is performed in different tables.

The label of a calibration kit and its description can be edited in the table of the calibration kits (Figure 57). The label appears on the calibration menu softkeys. The description is just for information of the user.

The table also contains display-only fields: flags of predefined and modified calibration kits and the counter of the calibration standards in a kit.

Calibration Kit Selection for Editing

Move the highlighting to the required line in the calibration kit (See Figure 57) table using “↑” and “↓ “ arrows.

Calibration Kit Label and Description Editing

Move the highlighting to the required line in the calibration kit (See Figure 57) table using “↑” and “↓” arrows and click on the «Enter» softkey. Then enter the new text in the table.

To activate the on-screen keyboard, click On-Screen Keyboard softkey.

Predefined Calibration Kit Restoration

Move the highlighting to the required line in the calibration kit (See Figure 57).

• To cancel the user changes of a predefined calibration kit, use Restore softkey.

User-Defined Calibration Kit Deleting

Move the highlighting to the required line in the calibration kit (See Figure 57).

To delete a user-defined calibration kit from the table, use the Delete softkey.

Calibration Kit Saving to File

Saving of a calibration kit to file is necessary for copying it to a different line of the table or to a different Analyzer.

This command is not necessary for saving of changes made by the user to the definitions of the kit as these changes are saved automatically.

Move the highlighting to the required line in the calibration kit (See Figure 57).

To save a calibration kit to file, click the corresponding softkey.

Calibration Kit Loading from File

You can load the calibration kit files created by the previous command.

Move the highlighting to the required line in the calibration kit (See Figure 57).

To load a calibration kit form file, click the corresponding softkey.

Calibration Standard Definition

The table of the calibration standards (See Figure 58) includes the full list of the standards in one calibration kit. For the standards defined by the model, the table contains the model parameters. For the data-based standards, the parameters of the model remain blank; S-parameters of such standards are represented in a different table (See section 5.3.3).

Standard Adding to Calibration Kit

To add a calibration standard to the table of calibration standard definition (See Figure 58), use the corresponding softkey.

Standard Deleting from Calibration Kit

To delete a calibration standard from the table of calibration standard definition (See Figure 58), use the delete softkey.

Calibration Standard Editing

Moving in the table of calibration standard definitions (See Figure 58) using navigation keys, enter the parameter values for a calibration kit:

Offset Delay Measurement Units Switching

To switch the offset delay measurement units in the calibration standard definition table (See Figure 58), click the softkeys.

Calibration Standard Copy/Paste Function

To save a calibration standard into clipboard, highlight the required line in the calibration standard definition table (See Figure 58), and click the following softkey:

To paste the standard(s) from the clipboard, click the corresponding softkey.

Management of Sequence in Standard Table

To change the sequence in the table, use the softkeys.

Table of Calibration Standard S-Parameters

The table of calibration standard S-parameters (See Figure 59) allows viewing and editing of S-parameters of the calibration standards of the “Data-Based” type.

To open the table of calibration standard S-parameters, move the required line in the table (See Figure 59), and click the Define DTD Data softkeys.

There are two different tables for one-port standards and for two-port standards. The table contains one parameter (S₁₁₎ for one-port standards, and four parameters (S₁₁, S₂₁, S₁₂, S₂₂) for two-port standards. Before the user fills in the table, its type will be defined: by the Touchstone format (s1p or s2p) if the data is downloaded from a file, or the user will be requested to specify the type if the data is entered by the user.

The data in the table can be represented in three formats according to the user settings:

• Real part and Imaginary part,
• Linear magnitude and Phase,
• Logarithmic magnitude (dB) and Phase.

The following rule is applied for the calibration of a two-port standard: the standard is considered connected by Port 1 (S₁₁) to the port with smallest number, and by Port 2 (S₂₂) to the port with the biggest number. If you need to reverse a two-port standard, use the Port Reverse function (section 5.3.3.5).

Line Adding to Table

To add a line to the table of the calibration standard S-parameters (See Figure 59), use the corresponding softkey.

Line Deleting from Table

To delete a line from the table of the calibration standard S-parameters (See Figure 59), use the corresponding softkey.

Table Clearing

To clear the entire table of the calibration standard S-parameters (See Figure 59), use the corresponding softkey.

Table Format Selecting

To select the format of the table of the calibration standard S-parameters (See Figure 59), use the corresponding softkey.

Port Reversing

To enable/disable reversing of the ports of a two-port standard, use the corresponding softkey.

Data Opening from File

To open the data from Touchstone file, use the corresponding softkey.

Calibration Standard Class Assignment

The assignment of classes to the standards of the selected calibration kit is made in the table of standard classes.

Standard labels filled in the table cells by selecting them from the list of calibration kit standards. Each row of the table corresponds to the standard class specified in the two left columns of the table.

If a single standard is assigned to the class then it filled into the "Subclass 1" column. If several standards are assigned to the class, as described in section 5.3.4, then "Subclass 2", “Subclass 3”, etc. columns are filled in.

Standard Class Table Editing

Moving in the table of calibration standard classes using navigation keys, click «Enter» in the required cell for the pop-up menu. Select the standard label in the pop-up menu to assign it the class and port number specified in the left part of the table.

Standard Deleting from Standard Class Table

Moving in the table of calibration standard classes (See Figure 60) using navigation keys, click «Enter» in the required cell for the pop-up menu. Select the line None in the pop-up menu to delete the standard contained in the cell.

Strict Class Assignment Function

This function allows for limitation of the one standard type(s) available in each class by the feature of strict correspondence (See Table 22). If this function is disabled, any class can be assigned to the standard.

Table 22: Standard class and standard type correspondence

To disable/enable the function of strict class correspondence function, use the corresponding softkey.

Function of Group Assignment of Port Number

This function allows for automatic assignment of one standard to all the ports of a specific class when assigned to at least one port.