Multitone Waveform Generator

Creating, Viewing, and Optimizing Multitone Waveforms

7.Turn on waveform averaging.

8.Create a marker and place it on the peak of one of the end tones.

9.Create a delta marker and place it on the peak of the adjacent intermodulation product, which should be spaced 10 MHz from the marked tone.

10.Measure the power difference between the tone and its distortion product.

You should now see a display that is similar to the one shown in Figure 8- 6. Your optimized multitone signal can now be used to measure the IMD products generated by a device- under- test.

Note that carrier feedthrough changes with time and temperature. Therefore, you will need to periodically readjust your I and Q offsets to keep the signal optimized.

Figure 8-6

Tone 1

Tone 10

 

Minimized

 

Carrier

 

Feedthrough

Intermodulation

Carrier

Distortion

Feedthrough

 

Distortion

To Determine Peak to Average Characteristics

This procedure describes how to set the phases of the tones in a multitone waveform and determine the peak to average characteristics by plotting the complementary cumulative distribution function (CCDF).

1.Press Mode > Multitone > Initialize Table > Number of Tones > 64 > Enter.

2.Press Freq Spacing > 20 > kHz.

3.Press Initialize Phase Fixed Random to Fixed.

Chapter 8

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Agilent Technologies E8257D PSG, E8267D PSG manual To Determine Peak to Average Characteristics, Tone Minimized Carrier
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E8267D PSG, E8257D PSG specifications

Agilent Technologies, a recognized leader in electronic measurement and communications solutions, offers a comprehensive range of signal generators, including the E8257D PSG (Pulsed Signal Generator) and E8267D PSG. These instruments are engineered to meet the demanding requirements of wireless communication, aerospace, defense, and various research applications.

The E8257D PSG is known for its versatility and reliability. It operates within a frequency range of 250 kHz to 40 GHz, making it suitable for a wide array of applications, from signal generation to vector modulation. With an output power capability of up to +30 dBm, it delivers high-quality signals with exceptional precision. Its low phase noise performance is especially critical for applications such as radar and communication system testing, where signal integrity is paramount.

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