Equation Editor - Agilent Technologies E5071C Manual

E5071C

Equation Editor

Overview
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Using Equation Editor
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Equation Editor Examples
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Equation History
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Functions and Constants
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Converting S Parameters to H, Y, Z, F & T Parameters
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Operators used in Equation Editor
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Other topics about Data Analysis
Overview
Equation Editor allows you to enter an algebraic equation of standard
mathematical operators and functions, referencing data that is available in
the E5071C. Once a valid equation is entered and enabled, the display of
the active trace is replaced with the results of the equation, and updated in
real-time as new data is acquired. For equations that can be expressed
with Equation Editor's supported functions, operators, and data, there is no
need for off-line processing in a separate program.
For example, on entering the equation "Example=S21/(1-S11)" in the
E5071C Equation Editor (4 in the Figure below), the resulting trace is
computed as each S21 data point divided by one minus the corresponding
S11 data point. For a 201 point sweep setup, the computation is repeated
201 times, once for each point.
As another example, if you want the ENA to make a directivity
measurement of your 3-port DUT, then the desired result is the sum and
difference of LogMag formatted traces, which can be expressed as: S12 +
S23 - S13.
Because Equation Editor operates on unformatted complex data, the
required equation is:
DIR = S12 * S23 / S13
DIR becomes a display label to help you identify the computed data trace.
On the equation trace, set the format to LogMag.
Using Equation Editor
The step-by-step procedure of using Equation Editor is described below:
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