Keysight Technologies N5171B EXG, User Manual

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Keysight EXG and MXG X-Series Signal Generators User’s Guide 89
Optimize Performance
Using Flatness Correction
2. Connect the power meter to the RF output and enter the correction values:
The user flatness correction array title displays
User Flatness: (UNSTORED)
, without a
name, indicating that the current user flatness correction array data has not been saved to the
file catalog.
Optional: Save the User Flatness Correction Data
1. Press Load/Store > Store to File .
2. Enter a file name (for this example,
FLATCAL1
) and press Enter .
The user flatness correction array file is now stored in the file catalog as a
USERFLAT
file. Any
user flatness correction files saved to the catalog can be recalled, loaded into the correction
array, and applied to the RF output to satisfy specific RF output flatness requirements.
3. Press Return .
Enable the Flatness Correction at the RF Output
— Press Return > Flatness Off On .
With a Power Meter Over LAN, GPIB, or USB Manually
i. Create the correction values:
Press
More > User Flatness > Do Cal.
The signal generator begins the user
flatness calibration, and displays a
progress bar.
The amplitude correction values load
automatically into the
user flatness correction array.
ii. View the stored amplitude correction
values:
Press
Configure Cal Array.
i. Open the User Flatness table editor and
highlight
the frequency value in row 1:
Press
More > User Flatness > Configure Cal
Array.
The RF output changes to the frequency value
of
the table row containing the cursor.
ii. Note the value measured by the power meter.
iii. Change the sign on the delta value (e.g.
the
delta value of the 0 dBm reference value (step
f
), and the measured value from
ii
is –.34,
change the value to +.34
).
iv. Highlight the correction value in row 1.
v. Press
Select
>
enter the delta calculated in step
iii
>
dB
.
(e.g. For this example enter +.34)
The signal generator adjusts the output
amplitude
based on the correction value entered.
vi. Repeat steps
ii
-
v
until the power meter
reads 0 dBm.
vii. Highlight the frequency value in the next row.
viii. Repeat steps
ii
through
vii
for the remaining
rows.