The primary RESPONSE menu provides direct access to S-Parameters from S11 to S22 and via the MoreSingle-Mode button to additional parameters on the SINGLE-MODE selection menu which provides access to other S-Parameters from S13 to S44. Both menus are shown below in Figure: RESPONSE and SINGLE-MODE Menus - 4-Port VNAs.
RESPONSE and SINGLE-MODE Menus - 4-Port VNAs
1. RESPONSE Menu - 4-Port VNAs
2. SINGLE-MODE Menu - 4-Port VNAs
The top-level four-port version of the RESPONSE menu is shown above in Figure: RESPONSE and SINGLE-MODE Menus - 4-Port VNAs where single purpose buttons provide access to S-Parameters for S11, S12, S21, and S33. The More Single-Mode button displays the SINGLE-MODE sublevel menu which provides S-Parameter selection from S13 to S44. The menu representation here is elongated; on an actual system there will be a scroll bar and not all parameters will be visible at once
RESPONSE and USER-DEFINED Menus
The 4-Port VNA provides for expanded user-defined parameters as shown below in parameters are shown in Figure: Response Menu Set - 4-Port VNAs. All of the parameters are available regardless the calibration in place so that some parameters may be uncorrected.
Response Menu Set - 4-Port VNAs
1. RESPONSE Menu - 4-Port VNAs
2. USER-DEFINED Menu - 4-Port VNAs
3. NUMERATOR Menu - 4-Port VNAs
4. DENOMINATOR Menu - 4-Port VNAs
The four-port version of the RESPONSE menu and the submenus linking from the User-Defined button are shown above in Figure: Response Menu Set - 4-Port VNAs. On the lower level of the USER-DEFINED response submenu, any one of the four ports may be sourcing RF power as the “driver” port. On the upper level of the USER-DEFINED menu, selections are made for the numerator and denominator values of user-defined parameter. The NUMERATOR and DENOMINATOR menus provide user-defined parameters. After a selection is made, both menus autoreturn to the USER-DEFINED menu.
RESPONSE Menu and MIXED MODE Dialog Box
The MIXED MODE dialog box provides configuration for three major types of mixed-mode configurations:
• Two differential pairs
• One differential pair and one singleton
• One differential pair and two singletons
Each mixed-mode configuration dialog box provides control of all response measurement parameters.
RESPONSE Menu and MIXED MODE Dialog Box Variants – 4-Port VNA
1. RESPONSE Menu and Mixed Mode button.
2. MIXED MODE Dialog Box for Two Differential Pairs.
3. MIXED MODE Dialog Box for One Differential Pair and One Singleton.
4. MIXED MODE Dialog Box for One Differential Pair and Two Singletons.
RESPONSE Menu and NF RESPONSE Menu
The NF RESPONSE menu provides configuration for available noise figure response measurement types:
• Noise Figure
• Noise Temperature
• Noise Power
The instrument must be equipped with Option 041 – Noise Figure Measurement and the application mode must be set to Noise Figure at MAIN | Application | APPLICATION.
RESPONSE and NF RESPONSE Menus – Option 041 on 4-Port VNAs
1. RESPONSE Menu – 4-Port VNAs
• Option 041 – Noise Figure is equipped.
• Noise Figure measurement mode is set on the APPLICATION menu.
• User-Defined button is unavailable.
• Mixed-Mode button is unavailable.
2. NF RESPONSE Menu – Available measurements:
• Noise Figure
• Noise Temperature
• Noise Power
Note
All of the noise figure response types are real only. Keep this is mind when selecting graph types. Noise figure and noise power quantities are computed using a 10 × log10 convention when a log mag graph type is selected.
