Custom Arb Waveform Generator

Working with Modulation Types

2.Press Mode > Custom > Real Time I/Q Baseband > Modulation Type > Define User I/Q > More (1 of 2) > Delete All Rows > Confirm Delete All Rows.

This loads a default 4QAM I/Q modulation and clears the I/Q Values editor.

3.Enter the I and Q values listed in the following table:

Symbol

Data

I Value

Q Value

 

 

 

 

0

0000

0.500000

1.000000

 

 

 

 

1

0001

−0.500000

1.000000

 

 

 

 

2

0010

0.500000

−1.000000

 

 

 

 

3

0011

−0.500000

−1.000000

 

 

 

 

a.Press 0.5 > Enter.

b.Press 1 > Enter.

c.Enter the remaining I and Q values.

As the I value updates, the highlight moves to the first Q entry (and provides a default value of

0)and an empty row of data appears below the first row. As the Q value updates, the highlight moves to the next I value. As you press the numeric keys, the numbers display in the active entry area. If you make a mistake, use the backspace key and retype.

Also note that 0.000000 appears as the first entry in the list of Distinct Values, and that 0.500000 and 1.000000 are listed as the distinct values.

4.Press More (2 of 2) > Display I/Q Map.

An I/Q State Map is displayed from the current values in the I/Q Values table.

The I/Q State Map in this example has four symbols. The I/Q State Map uses the following four unique values: 0.5, 1.0, −0.5, and −1.0 to create the four symbols. It is not the number of values that defines how many symbols a map has, but how those values are combined.

5.Press Return.

When the contents of an I/Q Values table have not been stored, I/Q Values (UNSTORED) appears on the display.

6.Press More (1 of 2) > Load/Store > Store To File.

If there is already a file name from the Catalog of IQ Files occupying the active entry area, press the following keys: Editing Keys > Clear Text

7.Enter a file name (for example, NEW4QAM) using the alpha keys and the numeric keypad.

8.Press Enter. The user- defined I/Q State Map should now be stored in the Catalog of IQ Files and can be recalled even after the signal generator has been turned off.

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Agilent Technologies E8267D PSG, E8257D PSG manual Symbol Data Value
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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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