Optimizing Performance

Creating and Applying User Flatness Correction

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.

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

This opens the User Flatness table editor and places the cursor over the frequency value

(26.5 GHz) for row 1. The RF output changes to the frequency value of the table row containing the cursor and 26.500 000 000 00 is displayed in the AMPLITUDE area of the display.

2.Observe and record the measured value from the power meter.

3.Subtract the measured value from 0 dBm.

4.Move the table cursor over the correction value in row 1.

5.Press Edit Item > enter the difference value from step 3 > dB.

The signal generator adjusts the RF output amplitude based on the correction value entered.

6.Repeat steps 2 through 5 until the power meter reads 0 dBm.

7.Use the down arrow key to place the cursor over the frequency value for the next row. The RF output changes to the frequency value highlighted by the cursor, as shown in the AMPLITUDE area of the display.

8.Repeat steps 2 through 7 for each entry in the User Flatness table.

Save the User Flatness Correction Data to the Memory Catalog

This process allows you to save the user flatness correction data as a file in the signal generator’s memory catalog. With several user flatness correction files saved to the memory catalog, specific files can be recalled, loaded into the correction array, and applied to the RF output to satisfy various RF output flatness requirements.

1.Press Load/Store.

2.Press Store to File.

3.Enter the file name FLATCAL2 using the alphanumeric softkeys and the numeric keypad.

4.Press Enter.

The user flatness correction array file FLATCAL2 is now stored in the memory catalog as a UFLT file.

Applying the User Flatness Correction Array

1.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 of the mm- wave source module.

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Agilent Technologies E8257D PSG manual Applying the User Flatness Correction Array, Press Return Return Flatness Off On
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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.

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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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