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Highlights

The Keysight U1833G is a versatile USB-powered smart noise source. The USB connection (USB TMC-compliant) significantly reduces setup time and provides compatibility with noise figure analyzers and signal analyzers. The broadband noise source accurately measures noise figures from 500 MHz to 67 GHz.
  • Automatic upload of excess noise ratio (ENR) data to the analyzers via USB connection (USB TMC-compliant) significantly speeds up overall setup time.
  • Electronic storage of ENR calibration data decreases the opportunity for user error.
  • Temperature sensing improves measurement accuracy, leading to tighter specification of device performance.
67 GHz USB smart noise source

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Featured resources

Application Notes 2026.05.14

Fundamentals of RF and Microwave Noise Figure Measurements

Explore information on RF and Microwave noise figure measurements, starting from the concept of noise figure and noise temperature, describing the noise characteristics of two-ports networks, and highlighting the different methods used to measure noise figure, such as Y-Factor and the Direct Noise measurement method.

2026.05.14

Application Notes 2026.02.28

Noise Figure Measurement Accuracy: The Y-Factor Method

This app note discusses the fundamentals of noise figure measurement using Y-factor method and how to avoid noise figure mistakes.

2026.02.28

Application Notes 2024.07.05

10 Hints for Making Successful Noise Figure Measurements

Noise figure is often the key to characterizing a receiver and to detect weak incoming signals. Learn to minimize uncertainties in your noise figure measurements.

2024.07.05

White Papers 2022.12.27

Three Ways USB Noise Sources Help You Remove Uncertainty in Y-Factor Measurements

USB noise sources are a fantastic alternative for noise figure measurements because of their ease, reliability, and versatility.

2022.12.27

Technical Overviews 2025.09.29

USB Smart Noise Sources

The technical overview describes a series of U1832/3x USB smart noise sources that offer an operating frequency of up to 18/26.5/50/60/100 GHz. The USB (USB-TMC compliant) connectivity that comes with smart features of automatically download of electronically stored calibration data and temperature sensing.

2025.09.29

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