Rohde & Schwarz R&S ZVA 8 - Page 274

Trace Menu R&S
®
ZVA/ZVB/ZVT
1145.1084.12 4.112 E-6
The Define Limit Line dialog contains a table to edit the individual segments of the limit line; see below.
The active trace is indicated in the title bar of the dialog. The three buttons below the table extend or
shorten the segment list.
• Add Segment adds a new segment to the list. The new segment is a copy of the previously
active segment and inserted after that segment. The current segment numbers are adapted.
The analyzer places no restriction on the number of segments in a limit line.
• Del. Sel. Segment removes the selected segment from the list.
• Del All Segments clears the entire segment list so it is possible to define or load a new limit
line.
The buttons to the right of the table are used to import and export limit line data.
• Recall Limit Line... calls up an Open File dialog to load a limit line from a limit line file. Limit
line files are ASCII files with the default extension *.limit and a special file format.
• Save Limit Line... calls up a Save As... dialog to store the current limit line configuration to a
limit line file. Limit line files are ASCII files with the default extension *.limit and a special file
format.
• Import Trace
opens a box to select a trace that can be used to define a limit line.
The box contains all data or memory traces of the active channel. As soon as a trace is
selected, the Properties of Imported Segments dialogwith further global import options is
opened.
• Import File
Calls up a standard Import File dialog to load a limit line from a trace file. The limit line import is
analogous to the import of traces. Trace files are ASCII files with selectable file format. After the
trace file is selected, the Properties of Imported Segments dialogwith further global import
options is opened.
Imported traces are polygonal curves with n points and n – 1 segments. The number of points n is set
via Channel – Sweep – Number of Points. The n – 1 segments are appended to the current segment
table for further editing. Existing limit line segments are not overwritten.