VectorStar™ MS464xB Series Microwave Vector Network Analyzer User Interface Reference : Response Menus – 2-Port VNAs : Primary Response Menus – 2-Port VNAs
 
Primary Response Menus – 2-Port VNAs
The available 2-port Response menus are:
• RESPONSE Menu – 2-Port VNAs
• USER-DEFINED Menu – 2-Port VNAs
• DENOMINATOR Menu – 2-Port VNAs
• MIXED MODE Menu – 2-Port VNAs
• EXT. ANALOG IN 1 Menu – 2-Port VNAs
• EXT. ANALOG IN 2 Menu – 2-Port VNAs
• MEAN OPT. PWR. 1 Menu – 2-Port VNAs
• MEAN OPT. PWR. 2 Menu – 2-Port VNAs
• NF RESPONSE Menu – 2-Port VNAs (Option 41)
• NF RESPONSE Menu – 2-Port VNAs (Option 48)
• IMD RESPONSE Menu – 2-Port VNAs with IMDView Active
The figure below shows Response 2-Port Menu Set when Option 41 – Noise Figure Measurement is installed.
Response Menu Set – 2-Port VNAs with Option 41 Noise Figure Measurement Installed 
1. RESPONSE Menu
• The Noise Figure button is not present if Option 41/48 is not installed.
• The Noise Figure button is only available if the instrument mode on the APPLICATION menu is set as Noise Figure.
2. USER-DEFINED Menu
• If Noise Figure mode has been set on the APPLICATION menu, this button is unavailable and grayed out.
3. NUMERATOR Menu
4. DENOMINATOR Menu
5. MIXED-MODE Menu
• If Noise Figure mode has been set on the APPLICATION menu, this button is unavailable and grayed out.
6. EXT. ANALOG IN 1 Menu
7. EXT.ANALOG IN 2 Menu
8. NF RESPONSE (Noise Figure Response) Menu
RESPONSE Menu – 2-Port VNAs
Previous
• MAIN Menu
Navigation
• MAIN | Response | RESPONSE
RESPONSE Menu – 2-Port VNAs 
1. RESPONSE Menu – 2-Port VNA
Noise Figure is not equipped; No Option 41 or 48.
2. RESPONSE Menu – 2-Port VNA
• Noise Figure is equipped; Option 41 or 48.
• The VNA measurement mode at the APPLICATION menu is not set to Noise Figure.
3. RESPONSE Menu – 2-Port VNA
• Noise Figure is equipped; Option 41 or 48.
• The VNA measurement mode at the APPLICATION menu is set to Noise Figure.
• The User-Defined button is unavailable.
• The Mixed-Mode button is unavailable.
4. Response Menu – 4-Port VNA
• Option 41/48 – Noise Figure is not equipped.
• Optical Measurements is ON.
5. IMD RESPONSE Menu – 2-Port VNA
• Option 44 – IMDView active.
Button Selection Group
• All the buttons of the RESPONSE menu, except for the Analog In Cal button, form a button selection group where the selection of any one button de-selects the other buttons.
S11 (Response)
Select sets the response to the input reflection coefficient (or S11 Forward Reflection) and de-selects S12, S21, S22, User-defined, Mixed-Mode, Ext. Analog In 1, and Ext. Analog In 2.
S12 (Response)
Select sets the response to the reverse transmission coefficient (or S12 Reverse Transmission) and de-selects S12, S21, S22, User-defined, Mixed-Mode, Ext. Analog In 1, and Ext. Analog In 2.
S21 (Response)
Select sets the response to the forward transmission coefficient (or S21 Forward Transmission) and de-selects S12, S21, S22, User-defined, Mixed-Mode, Ext. Analog In 1, and Ext. Analog In 2.
S22 (Response)
Select sets the response to the output reflection coefficient (or S22 Reverse Reflection) and de-selects S12, S21, S22, User-defined, Mixed-Mode, Ext. Analog In 1, and Ext. Analog In 2.
User-defined (Response)
Select displays the USER-DEFINED menu and sets the response to a user-defined mathematical fraction by using the USER DEFINED menu to select S11, S12, S21, S22, or 1 (one) as a numerator over S11, S12, S21, S22, or 1 as the denominator. Select also de-selects S12, S21, S22, Mixed-Mode, Ext. Analog In 1, and Ext. Analog In 2. This button is unavailable if the VNA measurement mode at the APPLICATION menu is set to Noise Figure. Option 41 or Option 48 must be equipped for Noise Figure.
• USER-DEFINED Menu – 2-Port VNAs
Mixed-Mode (Response 2-Port)
Select displays the MIXED-MODE menu where mixed-mode response options of SDD, SCC, SDC, and SCD are available with a Port Pair assignment of either 1:2 or 2:1. Select also de-selects S12, S21, S22, User-Defined, Ext. Analog In 1, and Ext. Analog In 2. This button is unavailable if the VNA measurement mode at the APPLICATION menu is set to Noise Figure. Option 41 or Option 48 must be equipped for Noise Figure.
• MIXED MODE Menu – 2-Port VNAs
Ext. Analog In 1 (Response)
Select displays the EXT ANALOG 1 menu and de-selects S12, S21, S22, User-defined, and Ext. Analog In 2.
• EXT. ANALOG IN 1 Menu – 2-Port VNAs
Ext. Analog In 2 (Response)
Select displays the EXT ANALOG 2 menu and de-selects S12, S21, S22, User-defined, and Ext. Analog In 1.
• EXT. ANALOG IN 2 Menu – 2-Port VNAs
Mean Opt. Pwr. 1
Allows selection of driving port. Displays responsivity.
• MEAN OPT. PWR. 1 Menu – 2-Port VNAs
Mean Opt. Pwr. 2
Allows selection of driving port. Displays responsivity.
• MEAN OPT. PWR. 2 Menu – 2-Port VNAs
Analog In Cal
Opens the Analog In Cal Dialog Box.
Noise Figure
This button is only present if Option 41 – Noise Figure or Option 48 – Differential Noise Figure is equipped on the VNA. If present, it is only available if the VNA application mode is set to Noise Figure. The application mode is set on the APPLICATION menu at:
• MAIN | Application | APPLICATION | Mode = Noise Figure
• Noise Figure (Option 41)
• Differential Noise Figure (Option 48)
If present and available, select displays the NF RESPONSE menu where the noise figure response type is selected.
• NF RESPONSE Menu – 2-Port VNAs (Option 41)
If the Noise Figure button is available, the User-Defined and Mixed-Mode buttons are unavailable.
Response Menu: IMD Response
Select displays the IMD Response Configuration dialog.
• IMD Response Menu (2-Port)