R&S ZNC3, Руководство пользователя

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GUI Reference
R&S
®
ZNC
155 User Manual 1173.9557.02 ─ 13
Mathematical Expression
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 "Operands":
●
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 following
buttons:
–
+/- changes the sign
–
The effect of the basic arithmetic operators (/, *,
–
, +) and the mathematical func-
tions is described in
​
table 4-1 .
Products of numbers and constants may 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.
●
Operand contains all data traces and memory traces of the active recall set.
–
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 last cre-
ated/modified memory trace, if several memory traces are associated with the
active data trace).
–
"StimVal" is the array of stimulus values; see footnote for
​
table 4-1 .
The trace operands denote unmodified data and memory traces. Mathematical rela-
tions for the traces are not taken into account, even if the mathematical mode is active
("User Defined: On"). The same applies to smoothing and the "Shift Trace" functions.
Trace Settings