How to use “EquationEditor_Examples.txt” with the Equation Editor
function on the ENA Network Analyzer
Document revision: 01.00
Document history:
2008/11/25 First release
This document explains how to use the “EquationEditor_Examples.txt” file with ENA
Equation Editor function.
[Note]
In this document, a front-panel key is enclosed in [ ] brackets and a softkey is shown in a bold
font. (Examples: front-panel key [Analysis], softkey Conversion)
[Notice]
1) In order to use the history function of the ENA Equation Editor, you have to install the
following firmware revision. Required firmware revision: A.09.10 or later.
Procedures for using "EquationEditor_Examples.txt" file:
1. Copy the "EquationEditor_Examples.txt" to the "D:\Agilent\Equation" folder on the ENA.
Figure 1. Copy "EquationEditor_Examples.txt" to the ENA
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[Notice]
The original "EquationEditor_Examples.txt" should be saved as separate file from “history.txt”.
The f reason is described in the E5071C Help Manual:“The History List is stored as a text file
D:\Agilent\Equation\history.txt and can save a maximum of 50 lines (equations) with a
maximum of 254 characters per line (equation).”
2. Open the “EquationEditor_Examples.txt” file in Notepad by double-clicking on the file name.
Figure 2. Equation Editor
3. Open the Equation Editor as follows.
Go to [Display] > Equation Editor
Click the … selection button in the Equation Editor dialog box. (shown as 5 in Figure 2).
Then, the Equation History dialog box will open. (see Figure 3.)
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Figure 3. Show equation history
4. Click on the Edit History button in the Equation History dialog box.
5. Copy and paste the equations that you want to use from the “EquationEditor_Examples.txt” file
to “history.txt”. You should paste equations on the top of text in the “history.txt”.
[Note]
If you want to delete some or all of existing equations in the “history.txt”, delete them before
pasting the equations.
6. Save the “history.txt” file by clicking on File > Save on the Notepad menu bar.
7. Close the “history.txt” by clicking File > Exit on the Notepad menu bar.
8. Click on the selection button again on the Equation Editor (shown as 5 in Figure 2). You can see
now the equations that you pasted in the Equation History dialog box.
9. Select an equation that you want to use by highlighting the equation, and then clicking on OK in
the Equation History dialog box. (see Figure 3.)
10. Click Apply. (see Figure 4.)
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Figure 4. Click on Apply and the equation title is displayed in the trace title area (Ls_S11)
11. Click Close to close the dialog box.
12. Set the Equation softkey to ON under [Display] front-panel key on the ENA.
The equation becomes visible and annotation of [Equ] (see 2b in Figure 2) is displayed in the trace
title area.
The equation label becomes a display label of the selected trace. (shown as 2c in Figure 2.)
References:
Please refer to the “Equation Editor” section of the “E5071C online Help Manual” for further details
The information is found under: Measurement > Data Analysis > Equation Editor
E5071C online Help Manual
http://ena.tm.agilent.com/e5071c/manuals/webhelp/eng/
[Supplemental information]
You can control the Equation Editor remotely with the following SCPI commands.
:CALCulate{[1]-160}[:SELected]:EQUation:TEXT <string1>
:CALCulate{[1]-160}[:SELected]:EQUation:STATE {ON|OFF|1|0}
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[Note for impedance parameter conversion equations]
The equation examples contain L, C, R, Q and D conversion equations. The Z, Y, R, X,
G and B conversions are not included.
However, if you want to display equivalent impedance (Z) or equivalent admittance (Y),
you can use the Conversion function which exists under [Analysis] > Conversion on the
ENA. You can also display R, X, G or B by using the Conversion function. For example, if
you want to display the R or X trace, turn any Z Conversion function ON and set the
[Format] to Real (for R) or Imaginary (for X). If you want to display G or B, do the same
thing with Y Conversion. Please refer to the “E5071C online Help Manual” for more detail.
The impedance parameter equations in the "EquationEditor_Examples.txt" file assume
that system impedance Z0 is 50 ohm and you need to use the “Real” format to display
the conversion result. You must not change the [Cal] > Set Z0 value from 50 ohm, and the
Port Z Conversion must be set to OFF or use 50 ohm ([Analysis] > Fixture Simulator >
Port Z Conversion) on the ENA.
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