Optimizing Performance

Creating and Applying User Flatness Correction

7.Press # of Points > 10 > Enter.

Steps 4, 5, and 6 enter the desired flatness- corrected frequencies into the step array.

8.Press Return > Load Cal Array From Step Array > Confirm Load From Step Data.

This populates the user flatness correction array with the frequency settings defined in the step array.

9.Press Amplitude > More (1 of 2) > Ampl Offset.

Enter a nominal (average) value for the gain or loss of any cables or other devices connected between the signal generator’s RF output and the power sensor. Refer to figure Figure 4- 4 on page 125. Gain is entered as a positive number while loss is entered as a negative number.

10.Press RF On/Off.

This activates the RF output and the RF ON annunciator is displayed on the signal generator.

Perform the User Flatness Correction

NOTE If you are not using an Agilent E4416A/17A/18B/19B power meter, or if your power meter does not have a GPIB interface, you can perform the user flatness correction manually. For instructions, see “Performing the User Flatness Correction Manually” on page 126.

1.Press More (1 of 2) > User Flatness > Do Cal.

Pressing the Do Cal softkey causes the signal generator to perform the user flatness correction routine. A progress bar is shown on the front panel display as the routine runs. The routine generates a table of correction points with each correction point consisting of a frequency and amplitude correction value for that frequency. The correction value at each point is the difference between the power level, as measured by the power meter, and the output power of the signal generator.

NOTE A power meter timeout may occur at low power levels. If a power meter timeout error message appears, increase the timeout value by pressing Amplitude > More (1 of 2) > User Flatness > More (1 of 2) > Meter Timeout.

2.Press Done.

Pressing the Done softkey loads the amplitude correction values into the user flatness correction array.

If desired, press Configure Cal Array.

This opens the user flatness correction array, where you can view the stored amplitude correction values. The user flatness correction array title displays User Flatness: (UNSTORED) indicating that the current user flatness correction array data has not been saved to the memory catalog.

Performing the User Flatness Correction Manually

If you are not using an Agilent E4416A/17A/18B/19B power meter, or if your power meter does not have a GPIB interface, complete the steps in this section and then continue with the user flatness correction tutorial.

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Chapter 4

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Agilent Technologies E8267D PSG Perform the User Flatness Correction, Performing the User Flatness Correction Manually
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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.

One of the standout features of the E8257D is its advanced modulation capabilities, including analog and digital modulation schemes. This flexibility allows engineers to simulate real-world communications environments accurately. The PSG also features a built-in arbitrary waveform generator that enables users to create complex waveforms tailored to specific testing needs, providing a significant advantage in research and development.

On the other hand, the Agilent E8267D PSG is designed to cater to the needs of users requiring a combined signal generation and analysis solution. With the capability to generate signals from 250 kHz to 67 GHz, the E8267D is ideal for millimeter-wave applications, as well as testing next-generation wireless technologies.

This model includes features such as enhanced phase noise performance and faster switching speed, which are crucial for signal integrity in sophisticated networks. The instrument's intuitive user interface and powerful software integration facilitate effortless operation and automation, thereby improving workflow efficiency.

Both the E8257D and E8267D PSG instruments incorporate cutting-edge technologies such as low-noise microwave and RF components, as well as digital signal processing capabilities. They provide users with enhanced accuracy and reliability in their measurements.

In summary, Agilent Technologies' E8257D and E8267D PSG signal generators represent the pinnacle of precision in signal generation technology. With their extensive feature sets, advanced modulation capabilities, and robust performance specifications, these instruments are invaluable tools for engineers and researchers working across various high-tech industries.
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