Agilent Technologies E8257C PSG Guía de usuario Pagina 153

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Chapter 4 139
Optimizing Performance
Creating and Applying User Flatness Correction
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 to 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 slaved to 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.
If the signal generator is to be interfaced to a remote controller after performing the user flatness
correction, its GPIB controller mode must be changed from GPIB talker to GPIB listener.
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 63.
2. Press
Amplitude > More (1 of 2) > User Flatness > GPIB Listener Mode.
This presets the signal generator and returns it to GPIB listener mode. The signal generator can
now receive remote commands executed by a remote controller connected to the GPIB interface.
3. Recall your instrument state from the instrument state register.
For instructions, see Saving an Instrument State on page 63.
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