VectorStar™ MS464xB Series Microwave Vector Network Analyzer User Interface Reference : Calibration Menus – 4-Port VNAs : AutoCal Port Cal Setup – 4-Port VNAs
 
AutoCal Port Cal Setup – 4-Port VNAs
AUTOCAL PORT Menu – 4-Port VNAs
Use the AUTOCAL PORT menu to define whether the AutoCal procedure will be for 4-port, 2-port, or 1-port calibration.
Prerequisites
• 4-Port VNA Mode
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• CALIBRATE Menu – 4-Port VNAs
Navigation
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | AutoCal | AUTOCAL PORT
AUTOCAL PORT Menu – 4-Port VNAs 
4-Port Cal (4-Port VNAs)
Sets the AutoCal calibration function for 2-Port VNAs to a 2-port method and displays the AUTOCAL PROCEDURE (2-PORT CAL) menu.
2-Port Cal (4-Port VNAs)
Sets the AutoCal calibration function for 4-Port VNAs to a 2-port method and displays the AUTOCAL PROCEDURE (2-PORT CAL) menu.
1-Port Cal (4-Port VNAs)
Sets the AutoCal calibration function for 4-Port VNAs to a 1-port method and displays the AUTOCAL PROCEDURE (1-PORT CAL) menu.
AUTOCAL SETUP Menu – 4-Port Cal – 4-Port VNAs
Prerequisites
• 4-Port Mode
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• AUTOCAL PORT Menu – 4-Port VNAs
Navigation
MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | AutoCal | AUTOCAL PORT | 4-Port Cal | AUTOCAL SETUP
AUTOCAL SETUP Menu – 4-Port Cal – 4-Port VNAs 
Modify Cal Setup
Select displays the MODIFY 4-PORT AUTOCAL SETUP dialog box. The dialog box provides control settings for Auto Sense Module Orientation, Select Cal Type, Through Setup, Adapter Removal Port, and links to the THRU INFO and AIR EQUIVALENT LENGTH CALCULATOR dialog boxes.
Port Selection (Read Only)
Displays the Ports selected for the AutoCal procedure. The settings are determined in the MODIFY 4-PORT AUTOCAL SETUP dialog box.
Cal Type (Read Only)
Displays the Cal Type selected for the AutoCal procedure. The settings are determined in the MODIFY 4-PORT AUTOCAL SETUP dialog box.
Thru Type (Read Only)
Displays the Thru Type selected for the AutoCal procedure as either Internal Thru, Internal Reciprocal, True Thru, or True Reciprocal. The settings are determined in the MODIFY 4-PORT AUTOCAL SETUP dialog box.
Cal A/B Orientation (Read Only)
Displays the left/right VNA Port orientation and assignment for the AutoCal procedure. The settings are determined in the MODIFY 4-PORT AUTOCAL SETUP dialog box.
Begin Cal (AutoCal 4-Port Cal)
Starts the AutoCal procedure. On-screen dialogs and prompts provide user instructions for the selected calibration procedure. When the calibration is complete, the display returns to the CALIBRATION [TR] menu where the Cal Status button is enabled and set to ON.
MODIFY 4-PORT AUTOCAL SETUP Dialog Box
Use the MODIFY 4-PORT AUTOCAL SETUP dialog box to change the calibration parameters prior to an AutoCal calibration procedure. Options include the calibration and thru types to be used. The left/right port sense is manually configured.
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• AUTOCAL SETUP Menu – 4-Port Cal – 4-Port VNAs
Navigation
• MAIN | Calibration | CALIBRATION | Calibrate | CALIBRATE | AutoCal | AUTOCAL PORT | 4-Port Cal | AUTOCAL SETUP | Modify Cal Setup | MODIFY 4-PORT AUTOCAL SETUP Dialog Box
MODIFY 4-PORT AUTOCAL SETUP Dialog Box (1 of 2)
1. Thru selected allows user entries for length, line impedance, line loss, and frequency.
S2P Thru selected provides buttons for loading, viewing, and characterization (to generate S2P files). Reciprocal selected allows user entries for length.
Note: Reciprocal is not available on paths 1-2 and 3-4 (greyed out), but is available on other paths.
General
The calibration requires two 2-Port calibrations: Cal A and Cal B.
Auto Sense Module Orientation
The Auto Sense Module Orientation is not available for 4-Port AutoCal calibrations.
Cal A Configuration
Select two ports for the Cal A configuration. choose from Port 1, Port 2, Port 3, or Port 4.
Cal A Configuration – Select Cal Type
Only the Full 2 Port selection is available.
Cal A Configuration – Through Setup
Select either Internal Through or True Thru.
If True Thru is selected, the Thru Info button is available. Select displays the THRU INFO Dialog Box – 4-Port VNAs.
For Adapter Removal
The For Adapter Removal area and its controls are not available in 4-Port AutoCal Setup.
Cal A Manual Port Sense Configuration
The selections available are dependent on the ports selected above in Cal A Configuration. For example:
• If Port 1 and Port 2 were selected above, your choices are:
• Left = Port 1 and Right = Port 2
• Left = Port 2 and Right = Port 1
• If Port 1 and Port 3 were selected above, your choices are:
• Left = Port 1 and Right = Port 3
• Left = Port 3 and Right = Port 1
Cal B Configuration
Auto selects whichever ports were not selected in Cal A Configuration.
Cal B Configuration – Select Cal Type
Only the Full 2 Port selection is available.
Cal B Configuration – Through Setup
Select either Internal Through or True Thru.
If True Thru is selected, the Thru Info button is available. Select displays the THRU INFO Dialog Box – 4-Port VNAs.
Cal B Manual Port Sense Configuration
The selections available are dependent on the ports selected above in Cal A Configuration. For example:
• If Port 1 and Port 2 were selected for Cal A above, your choices are:
• Left = Port 3 and Right = Port 4
• Left = Port 4 and Right = Port 3
• If Port 1 and Port 3 were selected for Cal A above, your choices are:
• Left = Port 2 and Right = Port 4
• Left = Port 4 and Right = Port 2
Additional Throughs
Choose at least one additional external thru from the check boxes in the port diagrams. More than one selection may be made. Select from:
• Thru 1-2
• Thru 1-4
• Thru 2-3
• Thru 3-4
Completing AutoCal Setup
When all AutoCal Setup functions are completed, click OK to return to the AutoCal menu. Click Cancel to make no changes and close the dialog box.
• AUTOCAL SETUP Menu – 4-Port Cal – 4-Port VNAs