Optimizing Performance
Creating and Applying User Flatness Correction
Chapter 372
Performing the User Flatness Correction Manually
If you are not using an Agilent E4416A/17A/18B/19B power meter, or if your power meter
does not have a GPIB interface, complete the steps in this section and then continue with the
user flatness correction tutorial.
1. Press
More (1 of 2) > User Flatness > Configure Cal Array.
This opens the User Flatness table editor and places the cursor over the frequency value
(26.5 GHz) for row 1. The RF output changes to the frequency value of the table row
containing the cursor and 26.500 000 000 00 is displayed the AMPLITUDE area of the
display.
2. Observe and record the measured value from the power meter.
3. Subtract the measured value from 0 dBm.
4. Move the table cursor over the correction value in row 1.
5. Press
Edit Item > enter the difference value from step 3 > dB.
The signal generator adjusts the RF output amplitude based on the correction value
entered.
6. Repeat steps 2 through 5 until the power meter reads 0 dBm.
7. Use the down arrow key to place the cursor over the frequency value for the next row. The
RF output changes to the frequency value highlighted by the cursor, as shown in the
AMPLITUDE area of the display.
8. Repeat steps 2 through 7 for every entry in the User Flatness table.
Save the User Flatness Correction Data to the Memory Catalog
This process allows you to save the user flatness correction data as a file in the signal
generator’s memory catalog. With several user flatness correction files saved to the memory
catalog, specific files can be recalled, loaded into the correction array, and applied to the RF
output to satisfy various RF output flatness requirements.
1. Press
Load/Store.
2. Press
Store to File.
3. Enter the file name FLATCAL2 using the alphanumeric softkeys and the numeric keypad.
4. Press
Enter.
The user flatness correction array file FLATCAL2 is now stored in the memory catalog as a
UFLT file.
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