Custom Real Time I/Q Baseband

Working with Data Patterns

Deselecting a Predefined Real Time Modulation Setup

To deselect any predefined mode that has been previously selected, and return to the top- level custom modulation menu:

1.Press Preset.

2.Press Mode > Custom > Real Time I/Q Baseband.

3.Press More (1 of 3) > More (2 of 3) > Predefined Mode > None.

4.Press More (3 of 3).

Working with Data Patterns

This section provides information on the following:

•“Using a Predefined Data Pattern” on page 167

•“Using a User- Defined Data Pattern” on page 167

•“Using an Externally Supplied Data Pattern” on page 171

The Data menu enables you to select from predefined and user defined data patterns. Data Patterns are used for transmitting continuous streams of unframed data. When the Custom Off On softkey is on, the real- time custom I/Q symbol builder creates I/Q symbols based on the data pattern and modulation type that has been selected. Refer to “Working with Modulation Types” on page 155 for information on selecting a modulation type.

The following data patterns are available:

•PN sequence allows you to access a menu (PN9, PN11, PN15, PN20, PN23) for internal data generation of pseudorandom sequences (pseudorandom noise sequences); a pseudorandom noise sequence is a periodic binary sequence approximating, in some sense, a Bernoulli “coin tossing” process with equiprobable outcomes.

•FIX4 0000 allows you to define a 4- bit repeating sequence data pattern and make it the active function. The selected 4- bit pattern will be repeated as necessary to provide a continuous stream of data.

•Other Patterns allows you to access a menu of choices (4 1’s & 4 0’s, 8 1’s & 8 0’s, 16 1’s & 16 0’s, 32 1’s & 32 0’s, or 64 1’s & 64 0’s) from which you can select a data pattern. Each pattern contains an equal number of ones and zeroes. The selected pattern will be repeated as necessary to provide a continuous stream of data.

•User File allows you to access a menu of choices from which you can create a file and store it to the Catalog of Bit Files, select from a Catalog of Bit Files and use it, or select from a Catalog of Bit Files, edit the file, and resave the file.

•Ext allows data patterns to be fed into the I/Q symbol builder, through the DATA port, in real- time.

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Agilent Technologies E8267D PSG manual Working with Data Patterns, Deselecting a Predefined Real Time Modulation Setup
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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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