LeCroy DDA 7 Zi series, Руководство оператора

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WavePro 7Zi
367
WP700Zi-OM-E-RevA
Now create an ASCII file containing the coefficients: IirFilter.txt
Note: The diskette icon, the file name, and the "A" below it are the representation of a Mathcad "File Output"
component. It is inserted by selecting Insert , Data , File Output . You must specify the file name ("IirFilter.txt" in
the example) and fill in the variable name that is the source of the data ("A" in the example). Be sure to specify a
complete path for the file.
Note: In the example above, because “A” has a predefined meaning (as a unit) in Mathcad 11, it appears with a
green underline. However, earlier versions of Mathcad give no warning about using "A" as a variable name, and
it may still be used for this purpose.
What gets written to lirfilter.txt is as follows:
0.0828825751812225 1 0.0674552738890719 1 0.0609096342883086 1
0.165765150362445 -1.40438489047158 0.134910547778144 -1.1429805025399
0.121819268576617 -1.03206940531971
0.0828825751812225 0.735915191196472 0.0674552738890719 0.412801598096189
0.0609096342883086 0.275707942472944
Writing Data to a Data File
To write values from Mathcad to a data file,you can use the File Read/Write component, as follows:
1. Click in the blank spot in your worksheet.
2. Choose Component from the Insert menu.
3. Select File Read or Write from the list and click Next . This launches the first part of the File Read or Write
Setup Wizard.
4. Choose Write to a data source and press Next to go to the second page of the Wizard:
From the File Format drop-down list in this Wizard, choose Tab Delimited Text .
5. Type the path to the data file you want to write, or click the Browse button to locate it.
6. Press Finish . You'll see the File Read or Write component icon and the path to the data file.
In the place holder that appears at the bottom of the component, enter the transposed name of the
Mathcad variable containing the data that will be written to the data file. It is important to transpose the
variable (Ctl + 1) so that the variables appear in the correct order.
When you click outside the component, the values in the Mathcad variable will be written to the filename you
specified. Each time you calculate the worksheet, the data file is rewritten.