Basic Operation

Modulating a Signal

Extending the Frequency Range

You can extend the signal generator frequency range using an Agilent 83550 series millimeter- wave source module or other manufacturer’s mm- source module. Refer to “Millimeter- Wave Source Modules” on page 236 for information on using the signal generator with a millimeter- wave source module.

Modulating a Signal

This section describes how to turn on a modulation format, and how to apply it to the RF output.

Turning On a Modulation Format

A modulation format can be turned on prior to or after setting the signal parameters.

1.Access the first menu within the modulation format.

This menu displays a softkey that associates the format’s name with off and on. For example, AM > AM Off On. For some formats, the off/on key may appear in additional menus other than the first one.

2.Press the modulation format off/on key until On highlights.

Figure 2- 9 shows the portion of the AM modulation format’s first menu that displays the state of the modulation format, as well as the active modulation format annunciator.

The modulation format generates, but the carrier signal is not modulated until you apply it to the RF output (see page 54).

Depending on the modulation format, the signal generator may require a few seconds to build the signal. Within the digital formats (E8267D PSG with Option 601/602 only), you may see a BaseBand Reconfiguring status bar appear on the display. Once the signal is generated, an annunciator showing the name of the format appears on the display, indicating that the modulation format is active. For digital formats (E8267D PSG with Option 601/602 only), the I/Q annunciator appears in addition to the name of the modulation format.

Chapter 2

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Agilent Technologies E8257D PSG manual Modulating a Signal, Extending the Frequency Range, Turning On a Modulation Format
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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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