In the following, you can find an overview on the functions of the expression toolbar:
Trace Values
Depending on the available measurement traces and memory traces,
you can select the trace data as input for your expressions.
To use for example the impedance data of the measurement, you can
select Impedance → Z{Measurement}.
If you want to use the Gain data of the Memory 1 trace, enter:
G{Memory 1}.
Operators
The expression editor supports several operators. The most common
ones are available for selection as shown in the image to the left.
Functions, Variables & Constants
The following functions are available via the menu:
• General functions: log()...natural logarithm, log10()...10-base
logarithm, sqrt()...square root
• Complex functions: abs()...magnitude, real()...real part of a complex
number, imag()...imaginary part of a complex number, arg()...angle
of a complex in radian, conj()...conjugate of a complex number
• Trigonometric functions: sin(), cos(), tan(), arcsin(), arccos(), arctan()
The following variables & constants are available via the menu:
• Variables: f...frequency in Hz, w...angular frequency in rad/s,
j...imaginary number, s...complex frequency (jw), Z0...nominal
impedance as set in BAS
• Constants: pi...π (3.141...), e...Euler's number, u0...permeability of
free space, e0...permittivity of free space, c...speed of light
Result Type
A Result Type for the expression result must be
selected before the expression can be evaluated.
This is required for the correct display of the
expression results since no automatic unit-calculation
is included in the expression parser.
The result type can be chosen from one of the pre-defined
result types Impedance, Admittance, Reflection, Gain or a
custom result type can be selected. When selecting custom,
the unit can be entered in the text field or left empty for a
unit-less value.
Bode Analyzer Suite software features
OMICRON Lab
139
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