11.5.2 Math traces
For simple mathematical operations you can use the Math trace feature of the Bode Analyzer Suite.
You can choose the two operands and the operator. The available operands are either the
measurement data or memory data. The available operators are: +, -, *, /.
Use the Math trace to perform simple calculations such as the sum of two measurements or the
difference between a measurement and a memory trace.
Note that the mathematical operation of a math trace is always performed on the complex
value selected in the Measurement setting. The result is then shown as selected in the
Format setting.
The configuration box of a Math trace set to a divide operation, is shown below:
Some notes on the math trace:
• A division equals a subtraction in logarithmic domain.
So if you choose Measurement / Memory 1, in the
Magnitude(dB) plot you will see the difference between
Measurement and Memory 1 in dB.
• A multiplication equals an summation in logarithmic
domain. So if you choose Measurement * Memory 1,
in the Magnitude(dB) plot you will see the sum of
Measurement and Memory 1 in dB.
• If the frequency points of the two operands don't match,
an info icon will be shown in the trace header .
Either linear interpolation will be used to find the needed
operand values or the values will be skipped.
• A Memory cannot be created from of a Math trace .
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