Trace Menu R&S
®
ZVA/ZVB/ZVT
1145.1084.12 4.56 E-6
The number of points belongs to the channel settings. Coupled data and memory traces are always
c
ompatible because they have the same channel settings.
The analyzer processes only numeric values without units in the mathematical formulas. No
consistency check for units is performed.
In its upper part the dialog contains a window to view and edit the mathematical expression and four
buttons:
• Del. All clears the window, so it is possible to start editing a new expression.
• Del. deletes the last character before the current cursor position (backspace function). Deleting
a character of an operand causes the operand to become invalid.
• Recall... calls up an Open File dialog to load a mathematical expression from a trace math
string file. Trace math string files are ASCII files with the default extension *.mth and contain
the mathematical expression as it is written in the User Def Math... dialog. It is possible to
change or create math string files using a text editor.
• Save... calls up a Save As... dialog to store the current expression to a trace math string file.
Trace math string files are ASCII files with the default extension *.mth and contain the
mathematical expression as it is written in the User Def Math... dialog. It is possible to change
or create math string files using a text editor.
To import a math file (*.mth) you can also use the Windows Explorer and simply double-click the
file or drag and drop the file into the NWA application. You must enable the mathematical mode
separately.
The operands and operators in the expression can be selected from two lists and the Numeric Value
panel:
• Operand contains all data traces and memory traces of the active setup plus the constants pi
(approx. 3.14159), e (approx. 2.71828) and the imaginary unit j.
• Operator
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