Agilent Technologies E4428C, User Manual, Page: 203 / 700

Chapter 4 179
Basic Digital Operation
Modifying a FIR Filter Using the FIR Table Editor
Modifying the Coefficients
1. Using the front-panel arrow keys, highlight coefficient 15.
2. Press
0
>
Enter
.
3. Press
Display Impulse Response
.
Figure 4-35
Refer to Figure 4-35 on page 179 . The graphic display can provide a useful troubleshooting tool (in this
case, it indicates that a coefficient value is missing, resulting in an improper Gaussian response).
4. Press
Return
.
5. Press
More (2 of 2)
.
6. Highlight coefficient 15.
7. Press
1
>
Enter
.
Storing the Filter to Memory
The maximum file name length is 23 characters (alphanumeric and special characters).
1. Press
Load/Store
>
Store To File
.
2. Name the file NEWFIR2.
3. Press
Enter
.
The contents of the current FIR table editor are stored to a file in non-volatile memory and the catalog of FIR
files is updated to show the new file.