Vector Network Analyzer Measurement Guide : VNA View Menus : Measurement Menus
 
Measurement Menus
Measurement Menus Group
 
Measure Menu
Measure Menu
 
Active Trace
Press this soft key to open the “Active Trace Selector” List Box and choose a trace. Use the arrow keys or the rotary knob to scroll through the list. Press the rotary knob or the Enter key to select a trace. Press the Esc key to close the list box and return to the Measure Menu without changing the trace selection.
S‑Parameter
Press this soft key to open the S‑Parameter List Box or the S‑Parameter Menu and select a measurement type. Refer to Section S‑Parameters for a description of the S‑Parameter settings.
Graph Type
Press this soft key to open the “Graph Type Selector” List Box and choose a graph (trace display) type. Examples of graph type are: Log Mag, Real, Imaginary, and Smith Chart.
Domain Selection
Press this soft key to open the Domain Menu and select Frequency, Time, or Distance as the measurement domain. Each trace can use a different domain.
Number of Traces
Press this soft key to open the Number of Traces Menu and select the number of traces (1, 2, 3, or 4) to be simultaneously displayed in the sweep window.
Trace Format
Press this soft key to open the Trace Format Menu and choose the screen format for trace display. The selected Trace Format is shown on the soft key face.
Smoothing %
Press this soft key to add a smoothing percentage from 0 (zero) to 20 %. Use the arrow keys, the rotary knob, or the number keypad to input the value, and then press the rotary knob or the Enter key.
Maximize Active Trace
Press this soft key to toggle the display between the active trace at full size in the sweep window and the minimized trace. The Trace Format soft key continues to show the selected Trace Format on the soft key face, and this soft key label changes between Maximize and Minimize Active Trace.
Note
If you apply smoothing when the sweep has more than 2000 points, the smoothing may slow the sweep time of the trace and the responsiveness of the VNA Master. This slowing can be significant, and it increases as the number of sweep points is increased.
 
If no other feature is currently enabled, then the rotary knob and arrow keys can change the active trace selection. Within the individual menus that are activated from the Measure menu, such as the Trace Format menu, you can select a setting by pressing a soft key or by using the arrow keys or the rotary knob or a number key. Pressing number key 1 in the Trace Format menu, for example, activates the first (top) soft key (Single in this example), and pressing number key 4 activates the fourth soft key parameter (Quad in this example). The Back soft key cannot be selected with the arrow keys, rotary knob, or number keys. Pressing a number key makes the selection and returns focus to the Measure menu. When using the arrow keys or the rotary knob, make your selection and then press the Enter key (or the rotary knob of an MS20xxC VNA Master).
 
S‑Parameter List Box
The MS20xxC VNA Master displays the S‑Parameter list box when the Measure menu S‑Parameter soft key is pressed. For a visual depiction of S‑Parameter measurements, refer to VNA Fundamentals. The list box choices are:
S11
Select this parameter to set the measurement to S11 Forward Reflection (receive at Port 1, transmit from Port 1).
S21
Select this parameter to set the measurement to S21 Forward Transmission (receive at Port 2, transmit from Port 1).
S12
Select this parameter to set the measurement to S12 Reverse Transmission (receive at Port 1, transmit from Port 2).
S22
Select this parameter to set the measurement to S22 Reverse Reflection (receive at Port 2, transmit from Port 2).
Sd1d1
This parameter appears in the list box only if Option 77 is enabled. Select this parameter to set the measurement to Sd1d1 (differential S11). For more information about the Sd1d1 parameter, refer to Balanced Ports, Option 77.
 
S‑Parameter Menu
The MS20xxB VNA Master and the S412E LMR Master display the S‑Parameter menu when the Measure menu S‑Parameter soft key is pressed.
S‑Parameter Menu
For a visual depiction of S‑Parameter measurements, refer to VNA Fundamentals.
 
S11
Press this soft key to set the measurement to S11 Forward Reflection (receive at Port 1, transmit from Port 1).
 
S21
Press this soft key to set the measurement to S21 Forward Transmission (receive at Port 2, transmit from Port 1).
 
 
 
Back
Press this soft key to return to the Measure Menu.