Optimizing Performance
Creating and Applying User Flatness Correction
Chapter 3 63
2. When prompted, press
Done.
This loads the amplitude correction values into the user flatness correction array.
If desired, press
Configure Cal Array.
This opens the user flatness correction array, where you can view the stored amplitude
correction values. The user flatness correction array title displays User Flatness:
(UNSTORED) indicating that the current user flatness correction array data has not been
saved to the memory catalog.
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
(1 GHz) for row 1. The RF output changes to the frequency value of the table row
containing the cursor and 1.000 000 000 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 of the table row containing
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.
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