VectorStar™ MS464xB Series Microwave Vector Network Analyzer User Interface Reference : Calibration Menus – 4-Port VNAs : Manual 2-Port Cal Setup – 4-Port VNAs
 
Manual 2-Port Cal Setup – 4-Port VNAs
TWO PORT CAL Menu – 4-Port VNAs
Button Availability:
• The exact composition of the menu depends on the settings made on the CAL SETUP, CAL METHOD, and LINE TYPE menus and on the resultant TWO PORT CAL SETUP dialog box.
• A representative menu is shown below.
• The example procedures at the end of this chapter show examples of various TWO PORT CAL menus.
Previous
• MANUAL CAL Menu – 4-Port VNAs
Navigation
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | Manual Cal | MANUAL CAL | 2-Port Cal | TWO PORT CAL
TWO PORT CAL Menu – 4-Port VNAs – Typical example (1 of 2)
Modify Cal Setup
Select displays the CAL SETUP menu where the Edit Cal Params button provides access to the THREE PORT CAL SETUP dialog box for the selected calibration method and line type.
Example two-port dialog boxes are available at the following links:
A summary of all 2-Port Cal Method and Line Type combinations is available at:
Port Selected
Read-only display of the ports selected for the pending calibration.
Completion Menu Buttons
For this example menu, the Port 1 Reflective Devices to the Isolation (Optional) buttons link to completion submenus where additional calibration procedures are performed.
For example, the Port 1 Reflective Devices button (shown below at #1) links to the REFL. DEVICES PORT 1 submenu. As each procedure is completed, the submenu button is marked with a completion checkmark. When all the procedures on the submenu are completed, use the Back button to return to the TWO PORT CAL menu.
Port 1 Reflective Devices
Select displays the REFL. DEVICES PORT 1 submenu. When all procedures are complete, select the Back button to return to the TWO PORT CAL menu where this button is now marked with a completion checkmark.
Port 2 Reflective Devices
Select displays the REFL. DEVICES PORT 2 submenu. When all procedures are complete, select the Back button to return to the TWO PORT CAL menu where this button is now marked with a completion checkmark.
Port 1-2 Reflective Devices (See figure at left)
When the Cal Method selected is TRL/TRM, LRL/LRM, or mTRL, the Port 1 Reflective Devices button label changes to Port 1-2 Reflective Devices. Selecting opens the LINES/MATCHES DEVICE(S) Menu – 4-Port VNAs. It offers selections in accordance with the settings made in the 2 Port Cal Setup Dialog.
Port 1-2 Lines/Matches (See figure at left)
When the Cal Method selected is TRL/TRM, LRL/LRM, or mTRL, the Port 1 Reflective Devices button label changes to Port 1-2 Lines/Matches. Selecting opens the LINES/MATCHES DEVICE(S) Menu – 4-Port VNAs. It offers selections in accordance with the settings made in the 2 Port Cal Setup Dialog. This offers selections of up to five bands and ten devices.
Thru/Recip
Select displays the THRU/RECIP submenu. When all procedures are complete, select the Back button to return to the TWO PORT CAL menu where this button is now marked with a completion checkmark.
Isolation (Optional)
If required, select displays the ISOLATION submenu. When all procedures are complete, select the Back button to return to the TWO PORT CAL menu where this button is now marked with a completion checkmark.
Done
This button is unavailable until a successful calibration procedure has been completed. When available, it returns to the CALIBRATION menu where the Cal Status button is set to ON.
Abort Cal
This button stops the current calibration procedure and returns to the CALIBRATION menu.
TWO PORT CAL SETUP (SOLT/R, Coaxial) Dialog Box
Previous
• CAL SETUP Menu – 4-Port VNAs
• TWO PORT CAL Menu – 4-Port VNAs
Navigation
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | Manual Cal | MANUAL CAL | 2-Port Cal | TWO PORT CAL | Modify Cal Setup | CAL SETUP | Edit Cal Params | TWO PORT CAL SETUP (SOLT/R, Coaxial)
TWO PORT CAL SETUP (SOLT/R, Coaxial) Dialog Box
1. Through selected allows user entries for length, line impedance, line loss, and frequency.
2. Reciprocal selected allows user entry for length.
3. S2P Thru selected provides buttons for loading, viewing, and characterization (to generate S2P files).
Reference Impedance
Input the reference impedance.
• Input field defaulted to 50 Ohms.
• Any numerical value accepted although input values < 0.01 Ohms are converted to 0.01 Ohms.
Cal A and Cal B Configuration
The dialog box is divided into two calibration areas for Calibration A and Calibration B. Of the four test ports, the user selects two ports for the Cal A procedure. The instrument autoselects the remaining two test ports for the Cal B procedure.
Cal A Test Ports
Select any two test ports from Port 1, Port 2, Port 3, and Port 4. The non-selected ports are autoselected for Cal B.
Cal A Cal Type
Select the calibration type from the following options:
• Full 2 Port
• 1 Path 2 Port forward. If port 1 and port 2 are selected, this is labeled as 1 Path 2 Port (1→2).
• 1 Path 2 Port reverse. If port 1 and port 2 are selected, this is labeled as 1 Path 2 Port (2→1).
Cal A Load Type
Select from:
• Broadband Load
• Sliding Load. If selected, a message appears: “Still required broadband loads below sliding load breakpoint frequency.”
Cal A Through/Reciprocal/S2P Thru Setup
• Through Selected
• Length (mm)
• Input line length in mm.
• Calculator icon displays the AIR EQUIVALENT LENGTH CONVERSION dialog box.
• AIR EQUIVALENT LENGTH Calculator Dialog Box
• Line Impedance (Ohms)
• Input defaults to be 50 Ohms. Any numeric value accepted.
• Line Loss (dB/mm)
• Allows input of a line loss in dB per mm at the frequency specified in the field below.
• @ Frequency (GHz)
• Allows input of a frequency setting for the Line Loss factor input above.
• Reciprocal Selected
• Length (mm)
• Input line length in mm.
• Calculator icon displays the AIR EQUIVALENT LENGTH CONVERSION dialog box.
• AIR EQUIVALENT LENGTH Calculator Dialog Box
• S2P Thru Selected
• Load S2P for Thru
• Opens navigation window to load S2P file.
• View S2P File
• Opens window to view contents of S2P file.
• Characterize Thru
• Allows a thru characterization and generation of an .s2p file.
• Use Generic Anritsu Adapter (check box)
• Checking this box will automatically load a default .s2p file for a generic Anritsu adapter.
Note that selecting the checkbox disables the Load S2P for Thru and Characterize Thru buttons.
Cal B Setup Areas
The Cal B functions and controls are the same as Cal A above.
Test Port 1 DUT Connector
If Port 1 was selected above, select the DUT Connector Type from a drop-down menu list with options of:
• 0.8 mm-Conn (M)
• 0.8 mm-Conn (F)
• W1-Conn (M)
• W1-Conn (F)
• V-Conn (M)
• V-Conn (F)
• K-Conn (M)
• K-Conn (F)
• 2.4 mm (M)
• 2.4 mm (F)
• GPC-3.5 (M)
• GPC-3.5 (F)
• SMA (M)
• SMA (F)
• N-Conn (M)
• N-Conn (F)
• N-Conn (75) (M)
• N-Conn (75) (F)
• GPC-7
• 7/16 (M)
• 7/16 (F)
• TNC (M) (Kit from Maury Microwave)
• TNC (F) (Kit from Maury Microwave)
• User-Defined1 (M) through User-Defined32 (M)
• User-Defined1 (F) through User-Defined32 (F)
Test Port 1 DUT Connector Standard Info Button
Select displays the STANDARD INFO dialog box for the selected connector with its calibration coefficients. The dialog box contents depend on the selected connector, Cal Method, and Line Type. The example here shows a typical standard information dialog box.
• WAVEGUIDE INFO and USER DEFINED WAVEGUIDE Dialog Boxes
Test Port 1 Select BB Load
Select BB Load number for Test Port 1:
• Load 1
• Load 2
Test Port 2 Configuration
Provides the same controls as Test Port 1 Connector above.
Test Port 3 Configuration
Provides the same controls as Test Port 3 Connector above.
Test Port 4 Configuration
Provides the same controls as Test Port 4 Connector above.
OK / Cancel
Click OK to accept the changes and return to the CAL SETUP menu.
Click Cancel to abandon any changes and return to the CAL SETUP menu.
TWO PORT CAL SETUP (SOLT/R, Microstrip) Dialog Box
Previous
• CAL SETUP Menu – 4-Port VNAs
• TWO PORT CAL Menu – 4-Port VNAs
Navigation
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | Manual Cal | MANUAL CAL | 2-Port Cal | TWO PORT CAL | Modify Cal Setup | CAL SETUP | Edit Cal Params | TWO PORT CAL SETUP (SOLT/R, Microstrip) Dialog Box
TWO PORT CAL SETUP (SOLT/R, Microstrip) Dialog Box
1. Through selected allows user entries for length, line impedance, line loss, and frequency.
2. Reciprocal selected allows user entry for length.
3. S2P Thru selected provides buttons for loading, viewing, and characterization (to generate S2P files).
Reference Impedance
Input the reference impedance.
• Input field defaulted to 50 Ohms.
• Any numerical value accepted.
Cal A and Cal B Configuration
The dialog box is divided into two calibration areas for Calibration A and Calibration B. Of the four test ports, the user selects two ports for the Cal A procedure. The instrument autoselects the remaining two test ports for the Cal B procedure.
Cal A Test Ports
Select any two test ports from Port 1, Port 2, Port 3, and Port 4. The non-selected ports are autoselected for Cal B.
Cal A Cal Type
Select the calibration type from the following options:
• Full 2 Port
• 1 Path 2 Port forward. If port 1 and port 2 are selected, this is labeled as 1 Path 2 Port (1→2).
• 1 Path 2 Port reverse. If port 1 and port 2 are selected, this is labeled as 1 Path 2 Port (2→1).
Cal A Load Type
Select from:
• Broadband Load
• Sliding Load. If selected, a message appears: “Still required broadband loads below sliding load breakpoint frequency.”
Cal A Through/Reciprocal/S2P Thru Setup Area
• Through Selected
• Length (mm)
• Input line length in mm.
• Calculator icon displays the AIR EQUIVALENT LENGTH CONVERSION dialog box.
• AIR EQUIVALENT LENGTH Calculator Dialog Box
• Line Impedance (Ohms)
• Input defaults to be 50 Ohms. Any numeric value accepted.
• Line Loss (dB/mm)
• Allows input of a line loss in dB per mm at the frequency specified in the field below.
• @ Frequency (GHz)
• Allows input of a frequency setting for the Line Loss factor input above.
• Reciprocal Selected
• Length (mm)
• Input line length in mm.
• Calculator icon displays the AIR EQUIVALENT LENGTH CONVERSION dialog box.
• AIR EQUIVALENT LENGTH Calculator Dialog Box
• S2P Thru Selected
• Load S2P for Thru
• Opens navigation window to load S2P file.
• View S2P File
• Opens window to view contents of S2P file.
• Characterize Thru
• Allows a thru characterization and generation of an .s2p file.
Cal B Setup Areas
The functions of the Cal B areas is the same as the Cal A above.
Test Port 1 DUT Connector
If Port 1 was selected above, select the DUT Connector Type from a drop-down menu list with options of:
• User-Defined1 through User-Defined32
Test Port 1 DUT Connector Standard Info Button
Select displays the STANDARD INFO dialog box for the selected connector with its calibration coefficients. The dialog box contents depend on the selected connector, Cal Method, and Line Type. The example here shows a typical standard information dialog box.
• MICROSTRIP INFO and USER DEFINED MICROSTRIP Dialog Boxes
Test Port 1 Select BB Load
Select BB Load number for Test Port 1:
• Load 1
• Load 2
Test Port 2 Configuration
Provides the same controls as Test Port 1 Connector above.
Test Port 3 Configuration
Provides the same controls as Test Port 1 Connector above.
Test Port 4 Configuration
Provides the same controls as Test Port 1 Connector above.
OK / Cancel
Click OK to accept the changes and return to the CAL SETUP menu.
Click Cancel to abandon any changes and return to the CAL SETUP menu.
TWO PORT CAL SETUP Broadband Cal (SOLT/R-SSST/R, Coaxial) Dialog Box
Full Name: Two Port Cal Setup (Broadband Cal, Merged SOLT/SOLR-SSST/SSSR)
Prerequisites
• VNA Mode = 4-Port Mode
• Cal Method = Broadband Cal (SOLT/R-SSST/R) – Appears only with VNA in Broadband Mode (3739)
• Line Type = Coaxial
Previous
• CAL SETUP Menu – 4-Port VNAs
• CAL METHOD Menu – 4-Port VNA
• TWO PORT CAL Menu – 4-Port VNAs
Navigation
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | Manual Cal | MANUAL CAL | 2-Port Cal | TWO PORT CAL | Modify Cal Setup | CAL SETUP | Cal Method = Broadband Cal (SOLT/R-SSST/R) | Line Type = Coaxial | Edit Cal Params | TWO PORT CAL SETUP BROADBAND CAL, MERGED SOLT-SSST/SOLR-SSSR) Dialog Box
TWO PORT CAL SETUP Broadband Cal, Merged (SOLT/SOLR-SSST/SSSR) Dialog Box
1. Through selected allows user entries for length, line impedance, line loss, and frequency.
2. Reciprocal selected allows user entry for length.
3. S2P Thru selected provides buttons for loading, viewing, and characterization (to generate S2P files).
Reference Impedance
• Input field is defaulted to 50 Ohms.
• Any numerical value accepted although input values < 0.01 Ohms are converted to 0.01 Ohms.
Cal A Config Area
Select 2 Ports for Cal A
• Select two (2) ports: Select from Port 1, Port, 2, Port 3, or Port 4
Select Cal Type
• Select either Full 2 Port, 1 Path 2 Port (1–>2), 1 Path 2 Port (2–>1),
Through/Reciprocal/S2P Thru Setup Area
• Through Selected
• Length (mm)
• Input line length in mm.
• Calculator icon displays the AIR EQUIVALENT LENGTH CONVERSION dialog box.
• AIR EQUIVALENT LENGTH Calculator Dialog Box
• Line Impedance (Ohms)
• Input defaults to be 50 Ohms. Any numeric value accepted.
• Line Loss (dB/mm)
• Allows input of a line loss in dB per mm at the frequency specified in the field below.
• @ Frequency (GHz)
• Allows input of a frequency setting for the Line Loss factor input above.
• Reciprocal Selected
• Length (mm)
• Input line length in mm.
• Calculator icon displays the AIR EQUIVALENT LENGTH CONVERSION dialog box.
• AIR EQUIVALENT LENGTH Calculator Dialog Box
• S2P Thru Selected
• Load S2P for Thru
• Opens navigation window to load S2P file.
• View S2P File
• Opens window to view contents of S2P file.
• Characterize Thru
• Allows a thru characterization and generation of an .s2p file.
Breakpoint Frequency
• 67 GHz is recommended for the 3656 (1 mm) calibration kit.
• 80 GHz is recommended for the 3659 (0.8 mm) calibration kit.
• In this combined calibration, the breakpoint frequency defines the frequency above which the SSS algorithm will be used (and SOL will be used for the frequencies at or below the breakpoint). Default values are based on Anritsu calibration kits and are optimal for those components.
Cal B Config Area (when enabled)
The Cal B Config area can be enabled by clicking the check box. Cal B Config has the same functions as Cal A config area, except the Cal B Ports selection is dependent on which ports were selected in Cal A Config. For example, if Port 1 and Port 2 are selected in the Cal A area, Port 3 and Port 4 are selected automatically in the Cal B Config area.
Test Ports Area
Test Port 1 DUT Connector
• Select the DUT Connector type from a drop-down menu list with options of:
• 0.8 mm-Conn (M), 0.8 mm-Conn (F), W1-Conn (M) and W1-Conn (F), User-Defined1 (M) through User-Defined32 (M), and User-Defined1 (F) through User-Defined32 (F)
Test Port 1 Connector Standard Info Button
• Select displays the STANDARD INFO dialog box for the selected connector and calibration method that displays the connector calibration coefficients. The dialog box contents depend on the selected connector, Cal Method, and Line Type. The following link shows a typical standard information dialog box for broadband cal.
• STANDARD INFO (Broadband Cal) 0.8 mm Connector (M) Dialog Box
The following link shows a typical User-defined Standard information dialog box for broadband cal.
• USER DEFINED STANDARD (Broadband Cal) Dialog Box
Test Port 2, Test Port 3, and Test Port 4 DUT Connector
• Identical function as with the Test Port 1 DUT Connector Area above. DUT Connector Type is selected from a drop-down menu list.
Test Port 2 and Test Port 3 Connector Standard Info Button
• Identical function as with the Test Port 1 DUT Connector Standard Info button above. Select displays the STANDARD INFO dialog box for the selected DUT Connector.
OK / Cancel:
Click OK to accept the changes or Cancel to abandon any changes and return to the CAL SETUP menu.
TWO PORT CAL SETUP (TRL/TRM, Coaxial) Dialog Box
Previous
• CAL SETUP Menu – 4-Port VNAs
• TWO PORT CAL Menu – 4-Port VNAs
Navigation
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | Manual Cal | MANUAL CAL | 2-Port Cal | TWO PORT CAL | Modify Cal Setup | CAL SETUP | Edit Cal Params | TWO PORT CAL SETUP (TRL/TRM) | Line Type (Coaxial) | Edit Cal Parameters | TWO PORT CAL SETUP (TRL/TRM, Coaxial) Dialog Box
TWO PORT CAL SETUP (TRL/TRM, Coaxial) Dialog Box
 
Reference Impedance
Input the reference impedance.
• Input field defaulted to 50 Ohms.
• Any numerical value accepted although input values < 0.01 Ohms are converted to 0.01 Ohms.
Dielectric
Enter a value if different than the default.
Cal A / Cal B Tabs
Access the Cal A or Cal B functions and controls by selecting either the Cal A or Cal B tab.
Cal A Config:
Select Port Pair (1-2, 3-4 combos are not allowed):
• 1,3
• 1,4
• 2,3
• 2,4
Line Length Representation
Select from three radio button controlled options:
• Effective Length (the free-space equivalent length)
• Delay
• Physical Length
Band Definition
Select one to five bands from the drop-down menu.
• Number of Bands = 1. Only the Band 1 Definition and editable parameters appear.
• Number of Bands = 2. The Band 2 Definition and editable parameters appear.
• Number of Bands = 3. The Band 3 Definition and editable parameters appear.
• Number of Bands = 4. The Band 4 Definition and editable parameters appear.
• Number of Bands = 5. The Band 5 Definition and editable parameters appear.
Band Parameter Definitions
• Band #
• Cal Device
• Band choices are
• Line
• Match
• Device Effective Length (mm) / Match
• Line: Enter device effective length for each band
• Match: USER DEFINED MATCH DEVICES Dialog Box – TRL/TRM
• Loss (dB/mm)
• Enter loss for each band.
• @Frequency (GHz)
• Enter frequency for line loss for each band.
• Reflection Type
• Enter a reflection type for each band.
• Short-like
• Open-like
• Both (available only if Cal Device Y= Match)
• Breakpoint (GHz)
• Enter a breakpoint frequency for Band 2–5. (The entries are active for bands 2–5.)
• Breakpoint Calculation
• Select to Calculate a breakpoint frequency for band 2:
Reflection Component
• Enforce Passivity – Forces the reflection value to be passive at an intermediate step in the calibration, which rescales the reflection tracking terms.
• Enter Open-like and/or Short-like offset length
Last Loaded Kit Name, Save Kit, Load Kit, Restore Defaults
• Last Loaded Kit Name – Loaded kit name appears in the field. The name can be edited in this field and then saved as another kit.
• Save Kit – Saves the present cal setup.
• Load Kit – Loads a previously saved cal setup.
• Restore Defaults – Loads the instrument default values for the Cal Setup.
OK/Cancel
• OK and Cancel returns user to the CAL SETUP menu.
 
TWO PORT CAL SETUP (LRL/LRM, Coaxial) Dialog Box
Previous
• CAL SETUP Menu – 4-Port VNAs
• TWO PORT CAL Menu – 4-Port VNAs
Navigation
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | Manual Cal | MANUAL CAL | 2-Port Cal | TWO PORT CAL | Modify Cal Setup | CAL SETUP | Edit Cal Params | TWO PORT CAL SETUP (LRL/LRM) | Line Type (Coaxial) | Edit Cal Parameters | TWO PORT CAL SETUP (LRL/M, Coaxial) Dialog Box
TWO PORT CAL SETUP (LRL/LRM, Coaxial) Dialog Box
 
Reference Impedance
Input the reference impedance.
• Input field defaulted to 50 Ohms.
• Any numerical value accepted although input values < 0.01 Ohms are converted to 0.01 Ohms.
Dielectric
Enter a value if different than the default.
Cal A / Cal B Tabs
Access the Cal A or Cal B functions and controls by selecting either the Cal A or Cal B tab.
Cal A Config:
Select Port Pair (1-2, 3-4 combos are not allowed):
• 1,3
• 1,4
• 2,3
• 2,4
Reference Plane Location
Select from two radio button controlled options:
• Ends of Line 1
• Middle of Line 1
Line Length Representation
Select from three radio button controlled options:
• Effective Length (the free-space equivalent length)
• Delay
• Physical Length
Band Definition
Select one to five bands from the drop-down menu.
• Number of Bands = 1. Only the Band 1 Definition and editable parameters appear.
• Number of Bands = 2. The Band 2 Definition and editable parameters appear.
• Number of Bands = 3. The Band 3 Definition and editable parameters appear.
• Number of Bands = 4. The Band 4 Definition and editable parameters appear.
• Number of Bands = 5. The Band 5 Definition and editable parameters appear.
Band Parameter Definitions
• Band # (Device #)
• Band 1 defines Devices as X = 1 and Y = 2
• Band 2 defines Devices as X = 3 and Y = 4
• Band 3 defines Devices as X = 5 and Y = 6
• Band 4 defines Devices as X = 7 and Y = 8
• Band 5 defines Devices as X = 9 and Y = 10
• Cal Device X
• Band 1 choice is
• Line
• Band 2 choices are
• New Line
• Bnd1 Cal Dev X
• Bnd1 Cal Dev Y
• Band 3 choices are
• New Line
• Bnd1 Cal Dev X
• Bnd1 Cal Dev Y
• Bnd2 Cal Dev X
• Bnd2 Cal Dev Y
• Band 4 choices are
• New Line
• Bnd1 Cal Dev X, Bnd1 Cal Dev Y
• Bnd2 Cal Dev X, Bnd2 Cal Dev Y
• Bnd3 Cal Dev X, Bnd3 Cal Dev Y
• Band 5 choices are
• New Line
• Bnd1 Cal Dev X, Bnd1 Cal Dev Y
• Bnd2 Cal Dev X, Bnd2 Cal Dev Y
• Bnd3 Cal Dev X, Bnd3 Cal Dev Y
• Bnd4 Cal Dev X, Bnd4 Cal Dev Y
• Device X Length (mm)
• Enter device length for each band
• Cal Device Y
• Select Line or Match for each band.
• Device Y Length (mm)/Match
• Enter device length for each band if Device Y is Line.
• Select Match Info if Device Y is Match. Opens USER DEFINED MATCH DEVICES Dialog Box – LRL/LRM.
• Loss (dB/mm)
• Enter loss for each band.
• @Frequency (GHz)
• Enter frequency for line loss for each band.
• Reflection Type
• Enter a reflection type for each band.
• Short-like
• Open-like
• Both (available only if Cal Device Y= Match)
• Breakpoint (GHz)
• Enter a breakpoint frequency for Band 2–5. (The entries are active for bands 2–5.)
• Breakpoint Calculation
• Select to Calculate a breakpoint frequency for band 2:
Reflection Component
• Enforce Passivity – Forces the reflection value to be passive at an intermediate step in the calibration, which rescales the reflection tracking terms.
• Enter Open-like and/or Short-like offset length
Last Loaded Kit Name, Save Kit, Load Kit, Restore Defaults
• Last Loaded Kit Name – Loaded kit name appears in the field. The name can be edited in this field and then saved as another kit.
• Save Kit – Saves the present cal setup.
• Load Kit – Loads a previously saved cal setup.
• Restore Defaults – Loads the instrument default values for the Cal Setup.
OK/Cancel
• OK and Cancel returns user to the CAL SETUP menu.
TWO PORT CAL SETUP (mTRL, Coaxial) Dialog Box
When mTRL Cal Method is selected, the Edit Cal Parameters button opens the Two Port Cal Setup (mTRL, Coaxial) dialog that provides from two to ten lines.
Prerequisites
• Cal Method = mTRL
• Line Type = Coaxial
Previous
• CAL SETUP Menu – 4-Port VNAs
Navigation
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | Manual Cal | MANUAL CAL | 2-Port Cal | TWO-PORT CAL | Modify Cal Setup | CAL SETUP | Edit Cal Params | TWO-PORT CAL SETUP (mTRL, Coaxial) Dialog Box
Edit Cal Params – TWO PORT CAL SETUP (mTRL, Coaxial) Dialog Box
Overview
The dialog box provides common areas for Reference Impedance and Dielectric. Below this common section are two tabbed dialog areas for Cal A and Cal B.
Reference Impedance
Input the reference impedance.
• Input field defaulted to 50 Ohms.
• Any numerical value accepted although input values < 0.01 Ohms are converted to 0.01 Ohms.
Dielectric
Enter a value if different than the default.
Cal A and Cal B tabs
The “A” and “B” calibration parameters are selected via a tabbed menu within the dialog box. The Cal A tab is always selected. Cal B calibration parameters can be set by selecting the Cal B Config checkbox.
Cal A Ports
Allows selection of the calibration A port pair. Combinations of ports 1-2 and ports 3-4 are not allowed.
• Port 1, 3
• Port 1, 4
• Port 2, 3
• Port 2, 4
Cal B Ports
This area is read-only and defined by the port pair choice for Cal A.
• If Cal A = Ports 1, 3, then Cal B = Ports 2, 4
• If Cal A = Ports 1, 4, then Cal B = Ports 2, 3
• If Cal A = Ports 2, 3, then Cal B = Ports 1, 4
• If Cal A = Ports 2, 4, then Cal B = Ports 1, 3
Reference Plane Location
Select from two radio button controlled options:
• Ends of Line 1
• Middle of Line 1
Line Length Representation
Select from three radio button controlled options:
• Effective Length (the free-space equivalent length)
• Delay
• Physical Length
Line Definition
Select two to ten line from the drop-down menu.
• Number of Lines = 2. The Lines 1 and 2 editable parameters appear.
• Number of Lines = 3. The Lines 1 through 3 editable parameters appear.
• Number of Lines = 4. The Lines 1 through 4 editable parameters appear.
• ...
• Number of Lines = 10. The Lines 1 through 10 editable parameters appear.
Line Parameter Definitions
• Line #
• Effective Length (mm) (If Effctive Length is selected)
• Enter effective length for each line.
• Delay (ps) (If Delay is selected)
• Enter delay for each line.
• Physical Length (mm) (If Physical Length is selected)
• Enter physical length for each line.
• Loss (dB/mm)
• Enter loss for each line.
• @Frequency (GHz)
• Enter frequency for line loss for each line.
Reflection Component
• Select Reflection Type
• Enforce Passivity – Forces the reflection value to be passive at an intermediate step in the calibration, which rescales the reflection tracking terms.
• Enter Open-like and/or Short-like offset length.
Use Match
• If selected, will display the Match Info button to open the USER DEFINED MATCH DEVICES Dialog Box – mTRL.
Optimal Length Super-Weighting
• Enables the use of an enhanced weighting scheme during the calibration to further emphasize line pairs that have optimal line length deltas. The use of this feature further de-emphasizes non-optimal pairs and reduces the impact of repeatability differences.
Last Loaded Kit Name, Save Kit, Load Kit, Restore Defaults
• Last Loaded Kit Name – Loaded kit name appears in the field. The name can be edited in this field and then saved as another kit.
• Save Kit saves the present cal setup.
• Load Kit – Click opens window to navigate to a desired existing mTRL cal kit file (.mlcf).
• Restore Defaults loads the instrument default values for the Cal Setup.
OK/Cancel: Returns user to the CAL SETUP menu.
TWO PORT CAL SETUP (mSSS, Coaxial) Dialog Box
Previous
• CAL SETUP Menu – 4-Port VNAs
• TWO PORT CAL Menu – 4-Port VNAs
Navigation
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | Manual Cal | MANUAL CAL | 2-Port Cal | TWO PORT CAL | Modify Cal Setup | CAL SETUP | Edit Cal Params | TWO PORT CAL SETUP (mSSS, Coaxial)
TWO PORT CAL SETUP (mSSS, Coaxial) Dialog Box
1. Through selected allows user entries for length, line impedance, line loss, and frequency.
2. Reciprocal selected allows user entry for length.
3. S2P Thru selected provides buttons for loading, viewing, and characterization (to generate S2P files).
Reference Impedance
Input the reference impedance.
• Input field defaulted to 50 Ohms.
• Any numerical value accepted although input values < 0.01 Ohms are converted to 0.01 Ohms.
Cal A and Cal B Configuration
The dialog box is divided into two calibration areas for Calibration A and Calibration B. Of the four test ports, the user selects two ports for the Cal A procedure. The instrument autoselects the remaining two test ports for the Cal B procedure.
Cal A Test Ports
Select any two test ports from Port 1, Port 2, Port 3, and Port 4. The non-selected ports are autoselected for Cal B.
Cal A Cal Type
Select the calibration type from the following options:
• Full 2 Port
• 1 Path 2 Port forward. If port 1 and port 2 are selected, this is labeled as 1 Path 2 Port (1→2).
• 1 Path 2 Port reverse. If port 1 and port 2 are selected, this is labeled as 1 Path 2 Port (2→1).
Cal A Through/Reciprocal/S2P Thru Setup
• Through Selected
• Length (mm)
• Input line length in mm.
• Calculator icon displays the AIR EQUIVALENT LENGTH CONVERSION dialog box.
• AIR EQUIVALENT LENGTH Calculator Dialog Box
• Line Impedance (Ohms)
• Input defaults to be 50 Ohms. Any numeric value accepted.
• Line Loss (dB/mm)
• Allows input of a line loss in dB per mm at the frequency specified in the field below.
• @ Frequency (GHz)
• Allows input of a frequency setting for the Line Loss factor input above.
• Reciprocal
• Not allowed between 1-2 and 3-4.
• Length (mm)
• Input line length in mm.
• S2P Thru Selected
• Load S2P for Thru
• Opens navigation window to load S2P file.
• View S2P File
• Opens window to view contents of S2P file.
• Characterize Thru
• Allows a thru characterization and generation of an .s2p file.
• Use Generic Anritsu Adapter (check box)
• Checking this box will automatically load a default .s2p file for a generic Anritsu adapter.
Note that selecting the checkbox disables the Load S2P for Thru and Characterize Thru buttons.
Cal B Setup Areas
The Cal B functions and controls are the same as Cal A above.
Test Ports: Port 1 Tab – Short Definition
Number of Shorts
Select number of shorts from 3-10.
Offset Length (mm)
Editable if the Cal Kit Sel selected is “Other”; otherwise it will reflect the offset length of the selected short in the cal kit standard (Kit Info column).
Cal Kit Selection
Select the DUT Connector Type from a drop-down menu list with options of:
• Other
• 0.8 mm-Conn (M)
• 0.8 mm-Conn (F)
• W1-Conn (M)
• W1-Conn (F)
• User-Defined1 (M) through User-Defined32 (M)
• User-Defined1 (F) through User-Defined32 (F)
Kit Info Button
Select displays the STANDARD INFO or USER DEFINED STANDARD dialog box for the selected connector and calibration method that displays the connector calibration coefficients. The dialog box contents depend on the selected connector, Cal Method, and Line Type. The examples show typical standard information dialog boxes.
• STANDARD INFO (TRIPLE OFFSET SHORT) W1-Connector (M) Dialog Box
• Since the STANDARD INFORMATION (mSSS) dialog derives from the SSS calibration kit definition, three shorts are available and the one to be used for the current line in the mSSS table is defined by the Select Short to use field. All of the shorts in the kit can be employed in the mSSS calibration, but each must be assigned to a separate line in the table.
• USER DEFINED STANDARD (Broadband Cal) Dialog Box
Loss (dB/mm)
This field (in conjunction with the @Frequency field and the offset length) is used to compute the loss in the short and hence the magnitude of its reflection coefficient. This is mainly relevant for very large offset lengths (> 10 mm) at microwave frequencies or somewhat shorter lengths at millimeter wave frequencies.
@Frequency (GHz)
This field (in conjunction with the loss in dB/mm and the offset length) is used to compute the loss of the offset short (and hence the magnitude of its reflection coefficient) at each frequency. If a non-zero value is entered here, it is treated as the reference frequency fref at which the loss (dB/mm) was defined and the loss at all other frequencies is scaled by sqrt(f/fref). If 0 is entered here, the loss is assumed to be constant with frequency.
Use Match Checkbox
When this box is checked, a match measurement is acquired during the calibration and is used whenever even the collection of offset shorts does not have enough phase separation (value defined within the USER DEFINED MATCH dialog: Electrical line length delta for match use, expressed in degrees). The decision to use the match data is made on a frequency-by-frequency basis. See the MS464XB Calibration and Measurement Guide for more information. This helps increase bandwidth of the calibration, particularly at lower frequencies, if a match standard is available.
Match Info Button
Opens the USER DEFINED MATCH dialog.
• USER DEFINED MATCH Dialog Box – mSSS
Optimal Offset Length Super-Weighting Checkbox
When this box is checked, more weight is given to those offset shorts that contribute most to large electrical length deltas and hence to bandwidth of the calibration. More details can be found in the MS464XB Calibration and Measurement Guide. Using this feature can increase the available bandwidth of the calibration, but does reduce immunity to repeatability variances in the setup, so it is not advised in more repeatability challenged scenarios (e.g., fixtures where the short standards are attached by spring force alone).
Port 2, Port 3, and Port 4 Tabs – Short Definition
Identical functions as with the Test Ports: Port 1 Tab above.
OK / Cancel
Click OK to accept the changes and return to the CAL SETUP menu.
Click Cancel to abandon any changes and return to the CAL SETUP menu.
Summary of 2-Port Calibration Setup Dialog Boxes
The table below summarizes the available fields in all available 3-port calibration setup dialog boxes. If the dialog box is described in greater detail above, a link is provided to that description. To view each dialog box, set the CAL METHOD and LINE TYPE menus to the appropriate settings, and then select the Edit Cal Params button. All three-port dialog boxes are named “Three Port Cal Setup (Cal Method, Line Type)”
2-Port Manual Cal Setup Dialog Box Summary – 4-Port VNAs (1 of 10)
Cal Method
Line Type
Input Selections
SOLT/R
Coaxial
Reference Impedance (Ohms)
Cal A Test Ports: Select 2 ports from Port 1, Port 2, Port 3, Port 4. Ports not selected are assigned to Cal B
Cal A Cal Type: Select Full 2 Port, 1 Path 2 Port Forward, or 1 Path 2 Port Reverse
Cal A Load Type: Select Broadband Load or Sliding Load
Cal A Through/Reciprocal/S2P Thru Setup
Through selected allows user entries for length, line impedance, line loss, and frequency.
Reciprocal selected allows user entry for length.
S2P Thru selected provides buttons for loading, viewing, and characterization (to generate S2P files).
Cal B Test Ports: Test Ports are auto-selected the remaining non-Cal A Ports
• All other controls and functions are the same as Cal A.
Test Port DUT Connector: Select from 0.8 mm-Conn (M), 0.8 mm-Conn (F), W1-Conn (M), W1-Conn (F), V-Conn (M), V-Conn (F), K-Conn (M), K-Conn (F), 2.4 mm (M), 2.4 mm (F), 2.4 mm V (M), 2.4 mm V (F), GPC-3.5 (M), GPC-3.5 (F), SMA (M), SMA (F), N-Conn (M), N-Conn (F), N-Conn (75) (M), N-Conn (75) (F), GPC-7, 7/16 (M), 7/16 (F), TNC (M), TNC (F), User-Defined1 (M) to User-Defined32 (M), User-Defined1 (F) to User-Defined32 (F)
Test Port Connector Standard Info Button: Select displays the STANDARD INFORMATION dialog box for the selected connector.
Test Port Select BB Load: Select Load 1 or Load 2.
Test Port 1, Test Port 2, Test Port 3, and Test Port 4 controls are the same.
SOLT/R
Non-Dispersive
Same controls as SOLT/R Coaxial above.
SOLT/R
Waveguide
SOLT/R is not recommended for Waveguide calibrations.
 
Same controls as SOLT/R Coaxial with the following changes:
Waveguide Kit: User-Defined 1 to User-Defined 32
Waveguide Info button: Displays USER DEFINED WAVEGUIDE dialog box for the waveguide kit selected above.
SOLT/R
Microstrip
Same controls as SOLT/R Coaxial with the following changes:
Microstrip Kit: 10 Mil Kit, 15 Mil Kit, 25 Mil Kit, User-Defined 1 to User-Defined 32
Microstrip Info button: Displays either the MICROSTRIP INFO or the USER DEFINED MICROSTRIP dialog box for the microstrip kit selected above.
Test Port 1, 2, 3, and 4 Connector Standard Info Button: Select displays the USER DEFINED STANDARD dialog box for the selected connector.
SSLT
Coaxial
Same controls as SOLT/R Coaxial with the following exception:
Test Port DUT Connector: 0.8 mm-Conn (M), 0.8 mm-Conn (F), W1-Conn (M), W1-Conn(F), User-Defined1(M) to User-Defined32 (M), User-Defined1(F) to User-Defined32 (F)
Test Port Connector Standard Info Button: Select displays either the STANDARD INFORMATION or the USER DEFINED dialog box for the selected connector.
SSLT
Non-Dispersive
Same controls as SSLT Coaxial.
SSLT
Waveguide
Same controls as SSLT Coaxial with the following changes:
 
Waveguide Kit: WR10, WR12, WR15, User-Defined 1 to User-Defined 32
Waveguide Info button: Displays WAVEGUIDE INFO dialog box for selected calibration method and kit.
SSLT
Microstrip
Same controls as SSLT Coaxial with the following changes:
 
Microstrip Kit: 10 Mil Kit, 15 Mil Kit, 25 Mil Kit, User-Defined 1 to User-Defined 32
Microstrip Info button: Displays MICROSTRIP INFO dialog box for selected calibration method and kit.
SSST
Coaxial
See full description at above.
Reference Impedance (Ohms)
Cal A Test Ports: Select 2 ports from Port 1, Port 2, Port 3, Port 4.
Cal A Cal Type: Select from Full 2 Port, 1 Path 2 Port Forward, or 1 Path 2 Port Reverse
Cal A Through/Reciprocal/S2P Thru Setup
Through selected allows user entries for length, line impedance, line loss, and frequency.
Reciprocal selected allows user entry for length.
S2P Thru selected provides buttons for loading, viewing, and characterization (to generate S2P files).
Cal B Configuration
Cal B can be included or not in the calibration.
If included, Test Ports are autoselected from the remaining non-Cal A Ports
All other controls and functions are the same
Test Port 1, Test Port 2, Test Port 3, and Test Port 4 Controls are the same.
Test Port DUT Connector: 0.8 mm-Conn (M), 0.8 mm-Conn (F), W1-Conn (M), W1-Conn(F), User-Defined1(M) to User-Defined32 (M), User-Defined1(F) to User-Defined32 (F)
Test Port DUT Connector Standard Info Button: Select displays the USER DEFINED STANDARD dialog box for the selected connector.
SSST
Non-Dispersive
Same controls as SSST Coaxial.
SSST
Waveguide
Same controls as SSST Coaxial with the following changes:
 
Waveguide Kit: User-Defined 1 to User-Defined32
Waveguide Info button: Displays WAVEGUIDE INFO dialog box for selected kit.
Test Port DUT Connector: User-Defined1 to User-Defined32
SSST
Microstrip
Same controls as SSST Coaxial with the following exception:
 
Microstrip Kit: 10 Mil Kit, 15 Mil Kit, 25 Mil Kit, User-Defined 1 to User-Defined 32
Microstrip Info button: Displays MICROSTRIP INFO dialog box for selected calibration method and kit.
Test Port DUT Connector Standard Info Button: Select displays the USER DEFINED STANDARD dialog box for the selected connector.
Broadband
(SOLT/SOLR-
SSST/SSSR)
Coaxial
Reference Impedance (Ohms)
Cal A Config. Test Ports: Select 2 ports from Port 1, Port 2, Port 3, Port 4. Ports not selected are assigned to Cal B
Cal A Cal Type: Select Full 2 Port, 1 Path 2 Port Forward, or 1 Path 2 Port Reverse
Cal A Through/Reciprocal/S2P Thru Setup: Select Through, Reciprocal, or S2P Thru
Through selected allows user entries for length, line impedance, line loss, and frequency.
Reciprocal selected allows user entry for length.
S2P Thru selected provides buttons for loading, viewing, and characterization (to generate S2P files).
Breakpoint Frequency (Cal A)
67 GHz is recommended for the 3656 (1 mm) calibration kit.
80 GHz is recommended for the 3659 (0.8 mm) calibration kit.
Cal B Config. Test Ports: Test Ports are auto-selected from the remaining non-Cal A Ports
All other controls and functions are the same as Cal A.
Breakpoint Frequency (Cal B)
67 GHz is recommended for the 3656 (1 mm) calibration kit.
80 GHz is recommended for the 3659 (0.8 mm) calibration kit.
Test Port 1 Connector Type Area
Select the DUT Connector Type from a drop-down menu list with options of:
0.8 mm-Conn (M), 0.8 mm-Conn (F), W1-Conn (M), W1-Conn (F), User-Defined1 (M) through User-Defined32 (M), User-Defined1 (F) through User-Defined32 (F)
Test Port 1 Connector Standard Info Button
Select displays the STANDARD INFO dialog box for the selected connector and calibration method that displays the connector calibration coefficients. The dialog box contents depend on the selected connector, Cal Method, and Line Type. The following link shows a typical standard information dialog box for broadband cal.
The following link shows a typical User-defined Standard information dialog box for broadband cal.
Test Port 2, Test Port 3, and Test Port 4 Connector Type Area: Identical function as with the Test Port 1 Connector Area above. Select the DUT Connector Type from a drop-down menu list.
Test Port 2, Test Port 3, and Test Port 4 Connector Standard Info Button: Identical function as with the Test Port 1 Connector Standard Info Button above. Select displays the STANDARD INFO dialog box for the selected DUT Connector.
OK / Cancel: Click OK to accept the changes or Cancel to abandon any changes and return to the CAL SETUP menu.
TRL/TRM
Coaxial
Reference Impedance (Ohms)
Dielectric – Enter a value if different than the default.
Cal A and Cal B tabs: The “A” and “B” calibration parameters are selected via a tabbed menu within the dialog box.
Cal A Configuration Parameters:
• Cal A Port Pair – Select from 1-3, 1-4, 2-3, 2-4
• Line Length Representation: Effective Length, Delay, Physical Length
• Cal A Number of Bands: 1 through 5
• Cal A Band 1-5 Type: Line, Match; Device Effective Length (mm)/Match; If Device 1 = Match, Match Info button displays USER DEFINED MATCH DEVICES dialog box for selected calibration kit.
USER DEFINED MATCH DEVICES Dialog Box – TRL/TRM
• Reflection Type: Open-Like Short-Like.
• Cal A Band Breakpoint: Calculate Recommended Value, Use Recommended Frequency (GHz), Define New Frequency (GHz).
• Cal A Reflection Component: Enforce Passivity
• Cal A Reflection Component: Open-like Length (mm), Short-like Offset Length (mm)
• Last Loaded Kit Name – TRL/TRM/LRL/LRM Cal Kit file name last loaded
• Save Kit – Save calibration kit data to an TRL/TRM/LRL/LRM cal kit file (.lcf)
• Load Kit – Recall existing TRL/TRM/LRL/LRM cal kit file (.lcf).
Cal B Configuration Parameters
• Cal B parameters are the same as those for Cal A.
TRL/TRM
Non-Dispersive
Same controls as TRL/TRM Coaxial.
TRL/TRM
Waveguide
Same controls as TRL/TRM Coaxial above with the following changes:
Cutoff Frequency (GHz)
Dielectric Value
TRL/TRM
Microstrip
Same controls as TRL/TRM Coaxial with the following changes:
Microstrip Kit: 10 Mil Kit, 15 Mil Kit, 25 Mil Kit, User-Defined 1 to User-Defined 32
Microstrip Info button: Displays MICROSTRIP INFO dialog box for selected calibration method and kit.
LRL/LRM
Coaxial
Reference Impedance (Ohms)
Dielectric – Enter a value if different than the default.
Cal A Ports – Select two port pairs from 1-3, 1-4, 2-3, 2-4
Cal B Ports – Auto-selected non-Cal A Port Pairs: 1-3, 1-4, 2-3, 2-4
Cal A and Cal B tabs: The “A” and “B” calibration parameters are selected via a tabbed menu within the dialog box.
Reference Plane Location: Ends of Line 1, Middle of Line 1
Line Length Representation: Effective Length, Delay, Physical Length
Number of Bands: 1 through 5
If 1, only Band 1 Device 1 and Band 1 Device 2 controls appear.
If 2, the above plus Band 2 Device 3 and Band 2 Device 4 controls appear.
If 3, the above plus Band 3 Device 5 and Band 3 Device 6 controls appear.
If 4, the above plus Band 4 Device 7 and Band 4 Device 8 controls appear.
If 5, the above plus Band 5 Device 9 and Band 5 Device 10 controls appear.
Cal A Configuration Parameters:
Cal A Reference Plane Location: Ends of Line, Middle of Line 1
Cal A Number of Bands: 1 or 2
Cal A Band 1 Device 1 Line: Line Length (mm) or Delay (ps), Line Loss (dB/mm), @ Frequency (GHz)
Cal A Band 1 Device 2 Type: Line, Match; Use Short-like component, Use Open-like component, Use both; If Device 2 = Match, Match Info button displays USER DEFINED MATCH DEVICES dialog box for selected calibration kit.
Cal A Band 2 Device 3: Use device 1, Use new line
Cal A Band 2 Device 4: Line, Match, Type of Reflection (Use Open-like component, Use Short-like component), Line Length (mm)
Cal A Band Break Point: Calculate Recommended Value, Use Recommended Frequency (GHz), Define New Frequency (GHz).
Cal A Reflection Component: Enforce Passivity
Cal A Reflection Component: Open-like Length (mm), Short-like Offset Length (mm)
Last Loaded Kit Name – TRL/TRM/LRL/LRM Cal Kit file name last loaded
Save Kit – Save calibration kit data to an TRL/TRM/LRL/LRM cal kit file (.lcf)
Load Kit – Recall existing TRL/TRM/LRL/LRM cal kit file (.lcf).
Cal B Configuration Parameters
• Cal B parameters are the same as those for Cal A.
LRL/LRM
Non-Dispersive
Same controls as LRL/LRM Coaxial.
LRL/LRM
Waveguide
Same controls as LRL/LRM Coaxial above with the following changes:
Cutoff Frequency (GHz)
Dielectric Value
LRL/LRM
Microstrip
Same controls as LRL/LRM Coaxial with the following changes:
Microstrip Kit: 10 Mil Kit, 15 Mil Kit, 25 Mil Kit, User-Defined 1 to User-Defined 32
Microstrip Info button: Displays MICROSTRIP INFO dialog box for selected calibration method and kit.
mTRL
Coaxial
See full description above display logic and controls at TWO PORT CAL SETUP (mTRL, Coaxial) Dialog Box.
Reference Impedance (Ohms)
Dielectric: Enter a value if different than the default.
Cal A and Cal B tabs: The “A” and “B” calibration parameters are selected via a tabbed menu within the dialog box. The Cal A tab is always selected. Cal B calibration parameters can be set by selecting the Cal B Config checkbox.
Select Port Pair: 1,3 or 1,4 or 2,3 or 2,4
Reference Plane Location: Ends of Line 1 or Middle of Line 1
Line Length Representation: Effective Length, Delay, Physical Length
Number of Lines: 2 through 10
Line#: Up to 10 devices
Line 1: Effective Length defaults to 1, Line Loss (dB/mm), @ Frequency (GHz)
• If Use Delay selected: Delay defaults to 3.3356 ps
• If Use Physical Length selected: Physical Length defaults to 0.9997 mm
Line 2: Effective Length defaults to 2, Line Loss (dB/mm), @ Frequency (GHz)
• If Use Delay selected: Delay defaults to 6.6713 ps
• If Use Physical Length selected: Physical Length defaults to 1.9994 mm
Line 3: Effective Length defaults to 3, Line Loss (dB/mm), @ Frequency (GHz)
• If Use Delay selected: Delay defaults to 10.0069 ps
• If Use Physical Length selected: Physical Length defaults to 2.9990 mm
Line 4: Effective Length defaults to 4, Line Loss (dB/mm), @ Frequency (GHz)
• If Use Delay selected: Delay defaults to 13.3426 ps
• If Use Physical Length selected: Physical Length defaults to 3.9987 mm
Line 5: Effective Length defaults to 5, Line Loss (dB/mm), @ Frequency (GHz)
• If Use Delay selected: Delay defaults to 16.6782 ps
• If Use Physical Length selected: Physical Length defaults to 4.9984 mm
Line 6: Effective Length defaults to 6, Line Loss (dB/mm), @ Frequency (GHz)
• If Use Delay selected: Delay defaults to 20.0138 ps
• If Use Physical Length selected: Physical Length defaults to 5.9981 mm
Line 7: Effective Length defaults to 7, Line Loss (dB/mm), @ Frequency (GHz)
• If Use Delay selected: Delay defaults to 23.3495 ps
• If Use Physical Length selected: Physical Length defaults to 6.9977 mm
mTRL
Coaxial
(continued)
Line 8: Effective Length defaults to 8, Line Loss (dB/mm), @ Frequency (GHz)
• If Use Delay selected: Delay defaults to 26.6851 ps
• If Use Physical Length selected: Physical Length defaults to 7.9974 mm
Line 9: Effective Length defaults to 9, Line Loss (dB/mm), @ Frequency (GHz)
• If Use Delay selected: Delay defaults to 30.0208 ps
• If Use Physical Length selected: Physical Length defaults to 8.9971 mm
Line 10: Effective Length defaults to 10, Line Loss (dB/mm), @ Frequency (GHz)
• If Use Delay selected: Delay defaults to 33.3564 ps
• If Use Physical Length selected: Physical Length defaults to 9.9968 mm
Reflection Component: Reflection Type
Reflection Component: Enforce Passivity
Reflection Component: Open-like Length (mm) and/or Short-like Offset Length (mm)
Use Match: If selected, will display the Match Info button to open the USER DEFINED MATCH DEVICES dialog box.
Optimal Length Super-Weighting: Enables the use of an enhanced weighting scheme during the calibration to further emphasize line pairs that have optimal line length deltas. The use of this feature further de-emphasizes non-optimal pairs and reduces the impact of repeatability differences.
Last Loaded Kit Name: Provides the name of the mTRL Cal Kit file that was last loaded.
Save Kit: Provides the ability to save calibration kit data. Click opens a Save Cal Kit window to save current settings to an mTRL cal kit file (.mlcf) in a desired location.
Load Kit: Provides the ability to recall calibration kit data. Click opens window to navigate to a desired existing mTRL cal kit file (.mlcf).
mTRL
Non-Dispersive
Same controls and functions as mTRL Coaxial above.
mTRL
Waveguide
Same controls and functions as mTRL Coaxial above with the following changes:
 
Cutoff frequency (GHz): The TE10 mode cutoff frequency for the waveguide in use.
mTRL
Microstrip
Same controls and functions as mTRL Coaxial above with the following changes:
 
Microstrip Kit: 10 Mil Kit, 15 Mil Kit, 25 Mil Kit, User-Defined 1 to User-Defined 32
Microstrip Info button: Displays a dialog box for selected calibration method and kit.
mSSS
Coaxial
 
Reference Impedance (Ohms)
Cal A Test Ports: Select 2 ports from Port 1, Port 2, Port 3, Port 4. Ports not selected are assigned to Cal B.
Cal A Cal Type: Select Full 2 Port, 1 Path 2 Port Forward, or 1 Path 2 Port Reverse
Cal A Through/Reciprocal/S2P Thru Setup
Through selected allows user entries for length, line impedance, line loss, and frequency.
Reciprocal selected allows user entry for length. Not allowed between ports 1-2 and 3-4.
S2P Thru selected provides buttons for loading, viewing, and characterization (to generate S2P files).
Cal B Test Ports: Test Ports are auto-selected the remaining non-Cal A Ports
• All other controls and functions are the same as Cal A.
Test Ports: Port 1, Port 2, Port 3, Port 4
Number of Shorts: 3-10
Offset Length: Cal Kit Sel selected is “Other”, otherwise reflects the offset length of the selected short in the cal kit standard (Kit Info column)
Cal Kit Selection: Other, 0.8 mm-Conn (M), 0.8 mm-Conn (F), W1-Conn (M), W1-Conn (F), User-Defined1 (M) through User-Defined32 (M), User-Defined1 (F) through User-Defined32 (F)
Kit Info Standard Info Button: Displays the STANDARD INFORMATION (mSSS) or USER DEFINED STANDARD (mSSS) dialog box for the selected short.
• The short to be used for the current line in the mSSS table is defined by the Select Short to use field.
Loss (dB/mm): Used to compute the loss in the short and hence the magnitude of its reflection coefficient.
@Frequency: Used to compute the loss of the offset short (and hence the magnitude of its reflection coefficient) at each frequency.
Use Match: When this box is checked, a match measurement is acquired during the calibration and is used whenever even the collection of offset shorts does not have enough phase separation.
Optimal Offset Length Super-Weighting: When this box is checked, more weight is given to those offset shorts that contribute most to large electrical length deltas and hence to bandwidth of the calibration.
Test Port 1, Test Port 2, Test Port 3, and Test Port 4 controls are the same.
mSSS
Non-Dispersive
Same controls as mSSS Coaxial above.
mSSS
Waveguide
Same controls as mSSS Coaxial with the following changes:
Cal Kit Selection: User-Defined1 through User-Defined32.
Cutoff Frequency: The cutoff frequency for the TE10 mode in the waveguide size being used for this calibration (all shorts are assumed to have the same aperture dimensions and hence the same cutoff frequency).
Dielectric: The dielectric constant of any filling material in the waveguide interface being used for the calibration (assumed 100% fill; default value is 1).
mSSS
Microstrip
Same controls as mSSS Coaxial with the following changes:
Cal Kit Selection: User-Defined1 through User-Defined32.
Microstrip Kit: 10 Mil Kit, 15 Mil Kit, 25 Mil Kit, User-Defined 1 to User-Defined 32
Microstrip Info button: Displays MICROSTRIP INFO dialog box for selected calibration method and kit.