Manual Calibration Menus and Dialog Boxes – 4-Port VNAs
Once a manual calibration type such as 3-Port Cal has been selected, the main setup menu (which is named for the cal type such as THREE PORT CAL) appears. The Modify Cal Setup button provides access to the CAL SETUP, CAL METHOD, and LINE TYPE configuration menus with further access to the appropriate calibration parameter configuration dialog box. The manual calibration setup and procedure menus – FOUR PORT CAL, THREE PORT CAL, TWO PORT CAL, ONE PORT CAL, TRANS. REPONSE, and REFL. RESPONSE and their supporting dialog boxes – change depending on the configuration made during the in the calibration setup. The figure below summarizes the configuration menus and dialogs.
Manual Calibration Setup Menus – 4-Port VNAs
Primary menus for manual calibration setup. 1. MANUAL CAL port selection menu. 2. Calibration setup menus with titles of FOUR PORT CAL, THREE PORT CAL, TWO PORT CAL, ONE PORT CAL, TRANS. RESPONSE, or REFL. RESPONSE. 3. CAL SETUP selection menu. 4. CAL METHOD selection menu. (Broadband Cal available only in Broadband configuration with Option 08x and 3739 Test Set.) 5. LINE TYPE selection menu. 6. Edit Cal Params button accesses calibration configuration dialog boxes. Dialog box titles vary depending on the calibration type, method, and line type selected.
About Manual Cal Combinations
The manual calibration setup menus and dialog boxes provide the following port configurations, calibration types, and calibration methods, and line types:
• Non-Dispersive – Essentially the same as coaxial
• Waveguide
• Microstrip
About Manual Cal Setup Dialog Boxes – 4-Port VNAs
Most combinations of the calibration parameters above can be further modified through a series of dialog boxes that control DUT connectors, load types such as broadband or sliding loads, port selection, through types, reference plane location, number of bands, and similar settings. Many of these dialog boxes are shown in this document and all are summarized in tables.
The instrument supports all combinations of 4-port calibration method and line types with configuration dialog boxes. In the interest of document length, not all combinations are described in detail. However, all combinations are summarized in the table at the end of this section.
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | Manual Cal | MANUAL CAL
MANUAL CALIBRATION Menu – 4-Port VNAs (1 of 2)
4-Port Cal
Select displays the Four Port Cal menu where the calibration step-by-step procedure is carried out. The button composition of the menu depends on the settings established in the CAL SETUP, CAL METHOD, and LINE TYPE menus and in the related FULL FOUR PORT CAL SETUP dialog boxes. Generally this is the most complete calibration and fully corrects the available four-port S-parameters:
Select displays the THREE PORT CAL menu where the calibration step-by-step procedure is carried out. The menu shown below is representative of a typical 3-port calibration menu:
The following 1-port calibration procedure examples are provided:
Transmission Freq. Response
Selecting the Transmission Frequency Response button displays the TRANS. RESPONSE menu. During the calibration configuration in the Edit Cal Params | CAL SETUP dialog, select forward or reverse or both directions. The menu below is representative of a typical trans. freq. resp. calibration menu:
Selecting the Reflection Frequency Response button displays the Refl. Response menu. During the calibration configuration in the Edit Cal Params | CAL SETUP dialog, select an Open or Short cal component. The menu below is representative of a typical refl. freq. resp. calibration menu:
Use the CAL SETUP menu to set the calibration method (such as SOLT/R or SSLT), the calibration line type (such as coaxial or microwave), and more detailed parameters for ports and connectors through the Edit Cal Parameters button and the linked CAL SETUP dialogs.
Previous
The CAL SETUP menu can be accessed from multiple menus depending on the manual calibration type selected on the MANUAL CAL menu.
• The navigation path below assumes that 4-Port Cal manual calibration type was selected on the MANUAL CAL menu.
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | Manual Cal | MANUAL CAL | 4-Port Cal | FOUR PORT CAL | Modify Cal Setup | CAL SETUP
• The general navigation path is:
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | Manual Cal | MANUAL CAL | [# of Ports] Cal | [NUM OF PORTS] CAL | Modify Cal Setup | CAL SETUP
CAL SETUP (CALIBRATION SETUP) Menu (1 of 3)
Cal Method
The field displays the currently selected calibration method, such as SOLT/SOLR, Broadband Cal, SSLT, SSST, TRL/TRM, LRL/LRM, mTRL, mSSS, or broadband (which is a combination of SOLT/SOLR and SSST/SSSR). Select displays the CAL METHOD menu where a calibration method is selected. Once a selection is made on the CAL METHOD menu, the system auto-returns to this CAL SETUP menu.
The field displays the currently selected line type such as Coaxial or Microstrip. Select displays the LINE TYPE menu where a line type is selected. Once a selection is made on the LINE TYPE menu, the system auto-returns to this CAL SETUP menu.
Select displays the appropriate calibration setup dialog box. The exact name of the dialog box varies depending on the calibration type, calibration method, and line type selected.
Dialog box name format: [Cal Type] [Cal Method] Cal Setup [Line Type]
• For example, if Full 2 Port, SOLT/SOLR, and Coaxial were selected, the dialog box name is:
• Full Two Port Cal Setup (SOLT/R, Coaxial)
Examples of Cal Setup dialog boxes using Coaxial line type are available in the links below:
Use the CAL METHOD menu to select whether the method of SOLT/SOLR, SSLT, SSST, Broadband Cal (SOLT/R-SSST/R), TRL/TRM, LRL/LRM, mTRL, or mSSS will be used during the calibration.
• The navigation path below assumes that Full 2 Port calibration type was selected on the Manual Cal menu.
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | Manual Cal | MANUAL CAL | 2-Port Cal | TWO PORT CAL | Modify Cal Setup | CAL SETUP | Cal Method | CAL METHOD
CAL METHOD Menu (1 of 2)
Auto-Return Button Selection Group:
The buttons of the CAL METHOD menu form an auto-return button selection group. Selecting any one button marks the selection with the select icon, de-selects the other buttons, and then auto-returns to the CAL SETUP menu.
Selecting the SOLT/SOLR button sets the calibration method to Short-Open-Load-Thru (or Short-Open-Load-Reciprocal) and then auto-returns to the CAL SETUP menu.
Offset Short (SSLT)
Selecting the Offset Short (SSLT) button sets the calibration method to Short-Short-Load-Thru and then auto-returns to the CAL SETUP menu.
Triple Offset Short (SSST)
Selecting the Triple Offset Short (SSST) button sets the calibration method to Short-Short-Short-Thru and then auto-returns to the CAL SETUP menu.
Broadband Cal (SOLT/R-SSST/R) – (VNA in Broadband Mode)
Broadband Cal is available on systems with Option 08x and the channel is in 3739 mode (via Rcvr Config or Multiple Source). Broadband cal is only valid for full term cals (1-port, 2-port cal, 1-path 2-port, 3-port, 4-port). When Broadband cal is selected the linetype must be set to Coaxial
Selecting the Broadband Cal (SOLT/R-SSST/R) button sets the calibration method to Broadband Cal (SOLT/R-SSST/R) and then auto-returns to the CAL SETUP menu.
TRL/TRM
Selecting the TRL/TRM button sets the calibration method to Through-Reflect-Line or Through-Reflect-Match and then auto-returns to the CAL SETUP menu.
LRL/LRM
Selecting the LRL/LRM button sets the calibration method to Line-Reflect-Line or Line-Reflect-Match and then auto-returns to the CAL SETUP menu.
mTRL
Selecting the mTRL button sets the calibration method to multiline TRL (Thru-Reflect-Line) and then auto-returns to the CAL SETUP menu.
mSSS
Selecting the mSSS button sets the calibration method to multiple offset short (mSSS) and then auto-returns to the CAL SETUP menu.
LINE TYPE Menu – 4-Port VNA
Use the LINE TYPE menu to select from coaxial, non-dispersive, waveguide, or microstrip line types. Non-dispersive is for line types such as coplanar waveguide, stripline, or twin-lead and is treated the same as coaxial line.
• The navigation path below assumes that Full 2 Port calibration type was selected on the Manual Cal menu.
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | Manual Cal | MANUAL CAL | 2-Port Cal | TWO PORT CAL | Modify Cal Setup | CAL SETUP | Line Type | LINE TYPE
LINE TYPE Menu
Auto-Return Button Selection Group
• The four (4) buttons of the LINE TYPE menu form an auto-return button selection group.
• Selecting any one button marks the selection with the select icon, de-selects the other three (3) buttons, and auto-returns to the CAL SETUP menu.
Coaxial (Line Type)
Select sets the line type to coaxial, marks the button with the select icon, de-selects the Non-Dispersive, Waveguide, and Microstrip buttons, and then auto-returns to the CAL SETUP menu.
Non-dispersive line types, such as Coplanar Waveguide, Stripline, or twin-lead, are used on transmissions. The system treats non-dispersive lines the same as coaxial line types. Select sets the line type to non-dispersive, marks the button with the select icon, de-selects the Coaxial, Waveguide, and Microstrip buttons, and then auto-returns to the CAL SETUP menu.
Waveguide is transmission media such as rectangular or circular waveguide. Select sets the line type to waveguide, marks the button with the select icon, de-selects the Coaxial, Non-Dispersive, and Microstrip buttons, and then auto-returns to the CAL SETUP menu.
Microstrip line is typically used in on-wafer media. Select sets the line type to microstrip, marks the button with the select icon, de-selects the Coaxial, Non-Dispersive, and Waveguide buttons, and then auto-returns to the CAL SETUP menu.
