VNA GUI reference
R&S
®
ZNL/ZNLE
358User Manual 1178.5966.02 ─ 20
Expression builder
The mathematical expression appears in the upper part of the dialog. The operands
and operators in the expression can be selected from a keyboard and the list of "Oper-
ands":
●
The keyboard supports the entry of numeric values, constants, and mathematical
functions. In addition to the numbers 0 to 9, the decimal point and the constants j
(complex unit), pi (approx. 3.14159) and e (approx. 2.71828), it contains the follow-
ing buttons:
– +/- changes the sign
– The effect of the basic arithmetic operators (/, *, –, +) and the mathematical
functions is described in Table 10-2.
Products of numbers and constants can be entered in abbreviated form, e.g. 2e
for 2*e.
– The Clear, Del, Back buttons are used to correct faulty entries.
– Check performs a consistency check of the displayed mathematical expression
and displays a message.
●
"Operands" contains all data traces and memory traces of the active channel
setup.
– Data and memory traces are identified by their trace names.
– "Data" denotes the active data trace.
– "Mem" is the memory trace associated with the active data trace (or the first
created one, if several memory traces are associated with the active data
trace).
– "StimVal" is the array of stimulus values; see footnote for Table 10-2.
The trace operands denote unmodified data and memory traces. Trace math and
other trace functions ("Smoothing", "Hold", "Shift Trace" etc.) are not taken into
account.
Trace softtool
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