Configuring Rectangular Clipping

Basic Digital Operation

Using Waveform Clipping

2.Press Mode > Dual ARB > Select Waveform and ensure that AUTOGEN_WAVEFORM is highlighted on the display. AUTOGEN_WAVEFORM is the default name assigned to the waveform you generated in the previous step.

3. Press Select Waveform. This selects the waveform and returns you to the previous softkey menu.

4.Press ARB Off On to On. The Dual Arb player must be turned on to display the CCDF plot in the following steps.

5.Press ARB Setup > Waveform Utilities > Waveform Statistics and ensure that AUTOGEN_WAVEFORM is highlighted on the display.

6. Press CCDF Plot and observe the position of the waveform’s curve, which is the darkest line.

7.Press Return > Return > Clipping.

8. Ensure that the Clipping Type I+jQ I,Q softkey is set to I+jQ, which is circular clipping.

9.Press Clip I+jQ To > 80 > % > Apply to Waveform. The I and Q data are both clipped by 80%. Once clipping is applied to the waveform it cannot be undone. Repeated use of the clipping function has a cumulative effect on the waveform.

10.Press Waveform Statistics > CCDF Plot and observe the waveform’s curve. Notice the reduction in peak- to- average power, relative to the previous plot, after applying clipping.

This procedure shows you how to configure rectangular clipping. The rectangular setting clips the I and Q data independently. For more information about rectangular clipping, refer to “How Clipping Reduces Peak- to- Average Power” on page 111.

1.Press Preset > Mode > Custom > Arb Waveform Generator > Digital Modulation Off On to On. This generates a custom arbitrary waveform for use in this procedure. You can also use a previously stored or downloaded waveform.

3. Press Select Waveform. This selects the waveform and returns you to the previous softkey menu.

4.Press ARB Off On to On. The Dual Arb player must be turned on to display the CCDF plot in the following steps.

5.Press ARB Setup > Waveform Utilities > Waveform Statistics and ensure that AUTOGEN_WAVEFORM is highlighted on the display.

6. Press CCDF Plot and observe the position of the waveform’s curve, which is the darkest line.

7.Press Return > Return > Clipping.

8.Ensure that the Clipping Type I+jQ I,Q softkey is set to I,Q. This activates the Clip I To and

Clip Q To softkeys that enable you to configure rectangular (independent) I and Q data clipping.

9.Press Clip I To > 80 > %.

10.Press Clip Q To > 40 > % > Apply to Waveform. The I and Q data are individually clipped by 80% and 40%, respectively. Once clipping is applied to the waveform it cannot be undone. Repeated use of the clipping function has a cumulative effect on the waveform.

Chapter 3

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Agilent Technologies E8257D PSG Configuring Rectangular Clipping, Press Return Return Clipping

Models: E8267D PSG E8257D PSG

7.Press Return > Return > Clipping.