Signal Generator Overview

Modes of Operation

Digital Modulation

In this mode, the signal generator modulates a CW signal with either a real- time I/Q signal or arbitrary I/Q waveform. I/Q modulation is only available on the E8267D. An internal baseband generator (Option 601/602) adds the following digital modulation formats:

•Custom Arb Waveform Generator mode can produce a single- modulated carrier or

multiple- modulated carriers. Each modulated carrier waveform must be calculated and generated before it can be output; this signal generation occurs on the internal baseband generator. Once a waveform has been created, it can be stored and recalled, which enables repeatable playback of test signals. To learn more, refer to “Custom Arb Waveform Generator” on page 143.

•Custom Real Time I/Q Baseband mode produces a single carrier, but it can be modulated with real- time data that allows real- time control over all of the parameters that affect the signal. The single- carrier signal that is produced can be modified by applying various data patterns, filters, symbol rates, modulation types, and burst shapes. To learn more, refer to “Custom Real Time I/Q Baseband” on page 165.

•Two Tone mode produces two separate continuous wave signals (or tones). The frequency spacing between the two signals and the amplitudes are adjustable. To learn more, refer to “Two- Tone Waveform Generator” on page 195.

•Multitone mode produces up to 64 continuous wave signals (or tones). Like Two Tone mode, the frequency spacing between the signals and the amplitudes are adjustable. To learn more, refer to “Multitone Waveform Generator” on page 185.

•Dual ARB mode is used to control the playback sequence of waveform segments that have been written into the ARB memory located on the internal baseband generator. These waveforms can be generated by the internal baseband generator using the Custom Arb Waveform Generator mode, or downloaded through a remote interface into the ARB memory. To learn more, refer to “Using the Dual ARB Waveform Player” on page 83.

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Agilent Technologies E8267D PSG, E8257D PSG manual Digital Modulation
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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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