Two-Tone Waveform Generator

Overview

The two-tone mode builds a waveform that has two equal-powered CW signals, or tones. The default waveform has two tones that are symmetrically spaced from the center carrier frequency, and have user-defined amplitude, carrier frequency, and frequency separation settings. The user can also align the tones left or right, relative to the carrier frequency.

The two-tone waveform generator is designed for testing the intermodulation distortion characteristics of non-linear devices, such as mixers or amplifiers. Intermodulation distortion (IMD) occurs when non-linear devices with multiple input frequencies interfere with adjacent channels or cause unwanted outputs at other frequencies. The two-tone waveform generator supplies a signal whose IMD products can be measured using a spectrum analyzer and used as a reference when measuring the IMD generated by a device-under-test.

Two-tone waveforms are created using the internal I/Q baseband generator and stored in ARB memory for playback. Although the two-tone mode generates a high-quality waveform, a small amount of IMD occurs. In addition to IMD, a small amount of carrier feedthrough and feedthrough-related IMD may be present when the spacing between the tones is centered on the carrier frequency. To minimize carrier feedthrough for a two-tone signal, you must manually adjust the I and Q offsets while observing the center carrier frequency with a spectrum analyzer. For measurements that require the absence of IMD and carrier feedthrough, you can create distortion-free multitone signals using Agilent Technologies’ Signal Studio software Option 408.

NOTE	For more information about two-tone waveform characteristics and the PSG vector signal
	generator two-tone format, download Application Note 1410 from our website by going to
	www.agilent.com and searching for “AN 1410” in Test & Measurement.

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Chapter 9

E8267C PSG, E8247C PSG CW, E8257C PSG specifications

Agilent Technologies, a leading provider of electronic test and measurement equipment, offers a range of signal generators that are pivotal in various applications, including telecommunications, aerospace, and research. Among their top-tier offerings are the E8257C PSG, E8247C PSG CW, and E8267C PSG. These signal generators are known for their exceptional performance, flexibility, and cutting-edge technologies.

The E8257C PSG is a high-performance microwave signal generator capable of generating signals from 10 MHz to 40 GHz. Its versatility makes it ideal for applications such as radar and satellite communications. One of the standout features of the E8257C is its low phase noise and superior output power, which ensure high-quality signal generation. The instrument incorporates advanced digital signal processing technology, allowing users to create complex modulated signals with precision. It also boasts a comprehensive set of modulation formats, including AM, FM, PM, and pulse modulation, making it suitable for diverse testing scenarios.

The E8247C PSG CW is designed specifically for continuous wave (CW) applications, covering frequencies from 500 kHz to 20 GHz. This generator is optimized for high stability and low output noise, making it ideal for applications that require a reliable signal source, such as manufacturing testing and maintenance of communication systems. The E8247C features a compact design and is equipped with an intuitive user interface, allowing quick access to essential functions. Its frequency agility and fast switching capabilities enhance productivity, enabling engineers to optimize their workflow.

The E8267C PSG delivers unparalleled performance in the microwave frequency range of 250 kHz to 70 GHz. It includes advanced modulation capabilities, allowing users to generate complex waveforms with relative ease. The E8267C supports various digital modulation schemes, including QAM, which is crucial for testing modern communication systems. Its high output power and excellent spectral purity make it suitable for both R&D and manufacturing applications. Additionally, the E8267C features built-in functionality for frequency and power sweeps, providing users with extensive testing options.

In summary, Agilent Technologies’ E8257C, E8247C, and E8267C signal generators are integral tools for professionals seeking high performance and versatility in their testing environments. With unique features and advanced technologies, these generators cater to the demands of modern applications, ensuring reliable and accurate signal generation for a wide range of industries. Whether it's for research, development, or manufacturing, these instruments demonstrate Agilent's commitment to delivering top-notch testing solutions.

Agilent Technologies E8247C PSG CW, E8267C PSG, E8257C PSG manual Two-Tone Waveform Generator

Models: E8267C PSG E8247C PSG CW E8257C PSG