The Scale settings define how the active trace is presented in the diagram selected in the Format submenu.
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Autoscale adjusts the diagram scale in order to display the entire active trace in the diagram area.
Autoscale All adjusts the diagram scale in order to display all traces in the diagram area.
Scale/Div. sets the value of the vertical diagram divisions.
Ref. Value sets the reference line of a Cartesian diagram or the outer circumference of a polar diagram.
Ref. Position defines the position of the reference line in a Cartesian diagram.
Max and Min define the upper and lower edge of a Cartesian diagram.
Ref Val = Marker sets the reference value equal to the active marker value.
The Scale settings are closely related to the settings in the Format submenu and in the Display menu. All of them have an influence on the way the analyzer presents data on the screen.
The Scale settings depend on the diagram type (Trace – Format) 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. Position, 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 disabled (grayed).
Relations
between the scaling parameters
The scaling parameters Scale / Div, Ref Value, Ref Position, Max, Min are coupled together in the following manner:
Max –
Min = Scale / Div * <Number of graticule divisions>
Max = Ref Value when Ref Position is 10
Min = Ref Value when Ref Position is 0
The Marker
Functions
provide a convenient alternative to manual diagram scaling.
Adjusts the Scale Divisions and the Ref. Value in order to display the entire active trace in the diagram area, leaving an appropriate display margin.
In Cartesian diagrams, the analyzer re-calculates the values of the vertical divisions so that the trace fits onto 80% of the vertical grid. The reference value is chosen to center the trace in the diagram.
In circular diagrams (Polar, Smith, Inverted Smith), the analyzer re-calculates 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 circumference.
Autoscale does not affect the stimulus values and the horizontal axis.
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Remote control: |
Adjusts the Scale Divisions and the Ref. Value in order to display all traces in the diagram area, leaving an appropriate display margin. This scale settings are analogous to the Autoscale function. The traces in the active diagram area are taken into account irrespective of their channel assignment.
Sets the value of the vertical diagram divisions in Cartesian diagrams.
Scale /Div corresponds to the increment between two consecutive grid lines. The unit depends on the display format: dB for display format dB Mag, degrees for Phase and Unwrapped Phase, ns for Delay, U (units) for all other (dimensionless) formats.
Scale /Div is not available (grayed) for circular diagrams (Polar, Smith, Inverted Smith).
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Remote control: |
Sets the reference line of a Cartesian diagram or the outer circumference of a circular diagram.
In Cartesian diagrams Ref.
Value defines the value of the reference line, indicated by a 
symbol at the right edge of the diagram area. The color of
the symbol corresponds to the trace color. As the Ref.
Value is varied, the position of the reference line (Ref.
Position)
is left unchanged, so that the current trace is shifted in vertical direction.
The unit of the Ref. Value depends
on the display format: dB for display format dB
Mag, degrees for Phase and
Unwrapped Phase, ns for Delay, U (units)
for all other (dimensionless) formats.
In circular diagrams (Polar, Smith, Inverted Smith), Ref. Value defines the value of the outer circumference. Changing Ref. Value enlarges or scales down the diagram, leaving the center unchanged. The unit is U (units) for all circular diagrams.
Use the paste
marker list
for convenient entry of the reference value.
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Remote control: |
Defines the position of the reference line in a Cartesian diagram.
The reference line is indicated by a symbol at the right
edge of the diagram area. The color of the symbol corresponds to the trace
color. Ref. Position is defined
on a linear scale between 0 (bottom line of the diagram) and 10 (top line
of the diagram). As the Ref. Position is varied, the value
of the reference line (Ref.
Value)
is left unchanged, so the current trace is shifted together with the Ref. Position.
Ref. Position is not available (grayed) for polar diagrams (Polar, Smith, Inverted Smith).
Use the analyzer's drag-and-drop
functionality to move the reference line symbol to the desired position.
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Remote control: |
Define the upper and lower edge of a Cartesian diagram.
Max and Min are not available (grayed) for polar diagrams (Polar, Smith, Inverted Smith).
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Remote control: |
DISPlay[:WINDow<Wnd>]:TRACe<WndTr>:Y:TOP
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Sets the reference value equal to the response value of the active marker, leaving the values of the vertical divisions (Scale Div.) unchanged.
In Cartesian diagrams the operation shifts the trace in vertical direction.
In polar diagrams (Polar, Smith, Inverted Smith), the operation re-defines the value of the outer circumference and therefore enlarges or scales down the diagram, leaving the center unchanged.
Use the analyzer's drag-and-drop
functionality to move the reference line symbol to the desired position.
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Remote control: |
No command, display configuration only |
