Operating the Instrument
R&S
®
ZND
51
Getting Started 1316.2407.02 ─ 52
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Select "Auto Scale Trace" or "Auto Scale Diagram" from the "Trace" > "Scale"
menu.
5.6.5
Circular Diagrams
The radial scale of a circular diagram ("Polar", "Smith" or "Inverted Smith") can be
changed with a single linear parameter, the "Ref Value". The reference value defines
the radius of the outer circumference.
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Increasing the "Ref Value" scales down the polar diagram.
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Decreasing the "Ref Value" magnifies the polar diagram.
The "Ref Value" is indicated in the scale section of the trace info.
To change the "Ref Value" setting, use one of the following methods:
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Locate it on the TRACE – [SCALE] > "Scale Values" softtool tab.
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Tap and hold (with a mouse: right-click) the scale section in the trace info and
select the parameter from the context menu.
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Select the parameter from the "Trace" > "Scale" menu.
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Use the "Set by Marker" functions; see
Chapter 5.6.6, "Set by Marker"
5.6.6
Set by Marker
The "Set by Marker" functions are a convenient tool for scaling (in particular: magnify-
ing) diagrams without entering explicit numeric values. You simply place a marker to a
trace point and use the marker values to change the sweep range or move the trace
relative to the vertical axis. The touchscreen or a mouse makes it easier to activate
(touch/click) or move (drag and drop) markers.
To set the sweep range using markers, use one of the following methods.
Scaling Diagrams
