R&S ZNL Series - Page 317

VNA GUI reference
R&S
®
ZNL/ZNLE
317User Manual 1178.5966.02 ─ 20
The "Scale Values" settings depend on the current trace format (diagram type)
because not all diagrams can be scaled in the same way:
●
In Cartesian diagrams, all scale settings are available.
●
In circular diagrams, no "Scale/Div", no "Ref Pos", and no "Max" and "Min" values
can be defined.
The default scale is activated automatically when a display format (diagram type) is
selected. Scale settings that are not compatible with the current display format are
unavailable (grayed out).
Relations between the scaling parameters
The scaling parameters "Scale/Div""Ref Value", "Ref Pos", "Max", and "Min" are cou-
pled together in the following manner:
●
"Max" – "Min" = "Scale/Div" · <Number of graticule divisions>
●
"Max" = "Ref Value" when "Ref Value" is 10
●
"Min" = "Ref Value" when "Ref Value" is 0
Alternatives to Scaling
There are several alternatives to manual trace/diagram scaling. Refer to the following
sections:
●
Chapter 4.3.2, "Zooming into the display", on page 58
●
Chapter 4.4.4, "Touchscreen gestures", on page 79 (zoom stimulus via spreading
and pinching)
●
Chapter 10.2.1, "Stimulus tab", on page 311
Auto Scale Trace
Adjusts the "Scale/Div" and the "Ref Value" to display the entire active trace in the dia-
gram area, leaving an appropriate display margin.
●
In Cartesian diagrams, the analyzer recalculates the values of the vertical divisions
so that the trace fits onto approx. 80% of the vertical grid. The reference value is
chosen to center the trace in the diagram.
●
In circular diagrams ("Polar", "Smith", "Inv Smith"), the analyzer recalculates the
values of the radial divisions so that the diagram is confined to approx. 80% of the
outer circumference. The reference value is set to the value of the outer circumfer-
ence.
Auto scale does not affect the stimulus values and the horizontal axis.
Remote command:
DISPlay[:WINDow<Wnd>]:TRACe<WndTr>:Y[:SCALe]:AUTO
Auto Scale Diagram
Adjusts the "Scale/Div" and the "Ref Value" to display all traces in the diagram area,
leaving an appropriate display margin. All traces in the active diagram are scaled inde-
pendently (see "Auto Scale Trace" on page 317), and irrespective of their channel
assignment.
Scale softtool