
52 Chapter 2
Basic Operation
Creating and Applying User Flatness Correction
Applying a User Flatness Correction Array
Press
Return > Return > Flatness Off On.
This applies the user flatness correction array to the RF output. The UF indicator is activated
in the AMPLITUDE section of the signal generator’s display and the frequency correction data
contained in the correction array is applied to the RF output amplitude.
Recalling and Applying a User Flatness Correction Array
Before performing the steps in this section, complete “Creating a User Flatness Correction
Array” on page 47.
1. Press
Preset.
2. Press
Amplitude > More (1 of 2) > User Flatness > Configure Cal Array > More (1 of 2) >
Preset List > Confirm Preset.
3. Press
More (2 of 2) > Load/Store.
4. Ensure that the file FLATCAL1 is highlighted.
5. Press
Load From Selected File > Confirm Load From File.
This populates the user flatness correction array with the data contained in the file
FLATCAL1. The user flatness correction array title displays User Flatness: FLATCAL1.
6. Press
Return > Flatness Off On.
This applies the user flatness correction data contained in FLATCAL1.
Returning the Signal Generator to GPIB Listener Mode
During the user flatness correction process, the power meter is controlled by the signal
generator via GPIB, and no other controllers are allowed on the GPIB interface. The signal
generator operates in GPIB talker mode, as a device controller for the power meter. In this
operating mode, it cannot receive SCPI commands via GPIB.
NOTE Before interfacing the signal generator to a remote controller, the signal
generator must be in GPIB listener mode. Press
Preset to return the signal
generator from GPIB talker mode to GPIB listener mode.
If an RF carrier has been previously configured, you must save the present
instrument state before returning the signal generator to GPIB listener mode.
1. Save your instrument state to the instrument state register.
For instructions, see “Saving an Instrument State” on page 55.
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