VectorStar™ MS4640A Series Microwave Vector Network Analyzers : Calibration Menus - 4-Port VNAs : Manual Calibration Menus and Dialog Boxes - 4-Port VNAs
 
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.
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.
Manual Cal Combinations
The manual calibration setup menus and dialog boxes provide the following port configurations, calibration types, and calibration methods, and line types:
Manual Calibration Types
4-Port Calibration
3-Port Calibration
2-Port Calibration
1-Port Calibration
Transmission Frequency Response Calibration
Reflection Frequency Response Calibration
Calibration Methods
SOLT/SOLR - Short-Open-Load-Thru / Short-Open-Load-Return
SSLT - Offset Short or Short-Short-Load-Thru
SSST - Triple Offset Short or Short-Short-Short-Thru
LRL/LRM - Line-Reflect-Line / Line-Reflect-Match
Line Types
Coaxial
Non-Dispersive - Essentially the same as coaxial
Waveguide
Microstrip
Manual Cal Dialog Box Settings
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.
 
MANUAL CAL Menu - 4-Port VNAs
Full Name
Manual Calibration Menu
Prerequisites
4-Port Mode
Previous
CALIBRATE Menu - 4-Port VNAs
Navigation
MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | Manual Cal | MANUAL CAL
 
MANUAL CALIBRATION Menu - 4-Port VNAs
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:
S11, S12, S13, S14, S21, S22, S23, S24, S31, S32, S33, S34, S41, S42, S43, S44.
The menu shown below is representative of a typical 4-port calibration menu:
3-Port Cal
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:
 
2-Port Cal
Select displays the TWO PORT CAL menu where the calibration step-by-step procedure is carried out.
The menu below is representative of a typical 2-port calibration menu:
The following 2-port calibration procedure examples are provided:
1-Port Cal
Select displays the One Port Cal menu.
The menu below is representative of a typical 1-port calibration.
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:
Reflection Freq. Response
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:
 
 
CAL SETUP Menu - 4-Port VNAs
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.
FOUR PORT CAL Menu - 4-Port VNAs
THREE PORT CAL Menu - 4-Port VNAs
TWO PORT CAL Menu - 4-Port VNAs
ONE PORT CAL Menu - 4-Port VNAs
TRANS. RESPONSE Menu - 4-Port VNAs
REFL. RESPONSE Menu - 4-Port VNAs
Navigation
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
Cal Method
The field displays the currently selected calibration method such as SOLT/SOLR or LRL/LRM. 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.
Line Type
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.
 
Edit Cal Params
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:
The summary tables below list the contents of all calibration setup dialog boxes based on the number of ports involved in the calibration:
 
 
 
CAL METHOD Menu - 4-Port VNA
Use the CAL METHOD menu to select whether the method of SOLT/SOLR, SSLT, SSST, or LRL/LRM will be used during the calibration.
Procedure Reference
Figure: CAL METHOD Menu Callout #3
Auto-Return Button Selection Group
The four (4) 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 three (3) buttons, and auto-returns to the CAL SETUP menu.
Previous
CAL SETUP Menu - 4-Port VNAs
Navigation
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 
SOLT/SOLR
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.
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.
 
 
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.
Procedure Reference
Figure: LINE TYPE Menu Callout #4
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.
Previous
CAL SETUP Menu - 4-Port VNAs.
Navigation
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 
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 Type)
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 (Line Type)
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 Type)
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.