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Noise Sources

346 Noise Source Family

This series of broadband noise sources has been designed to cover the majority of measurement applications with a range of frequencies, Excess Noise Ratio (ENR), and coaxial connector types.

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the right noise source for your specific needs

Whether you are working with systems, subsystems, subassemblies, or discrete devices, each of your components adds noise that affects the overall performance of your receiver. By measuring and reducing noise figure, you can give your components a competitive edge.

The 346 series of broadband noise sources has been designed to cover the majority of measurement applications with a range of frequencies, Excess Noise Ratio (ENR), and coaxial connector types.

The Keysight 346A, 346B, and 346C noise source produce noise output (power-on) when +28 V is applied. When it is off, there is residual noise due to thermal agitation in the noise source (power-off). These two noise levels are used to measure the gain and added noise of the device under test and, consequently, its noise figure. The 364 noise source family specification list the uncertainty of the ENR data.

All 3 models are provided with a BNC female connector for power input. The output connector is a male APC-3.5 on the standard noise sources. Type-N connectors are available as options for the Keysight 346A and 346B noise sources. In addition to these general characteristics, certain characteristics apply to the specific models.

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Find the Model that's Right for You

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346A

346A Noise Source, 10 MHz to 18 GHz, nominal ENR 6 dB

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The Keysight 346A noise source (10 MHz to 18 GHz) with a 6dB ENR is designed especially for accurate characterization of input-impedance-sensitive devices.

346B

346B Noise Source, 10 MHz to 18 GHz, nominal ENR 15 dB

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The Keysight 346B noise source's high ENR (15dB), low SWR, and variety of connectors make it a general-purpose noise source for the range 10 MHz to 18 GHz.

346C

346C Noise Source, 10 MHz to 26.5 GHz

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The Keysight 346C noise source offers 10 MHz to 12 GHz coverage with a 16 dB ENR or 12 GHz to 26.5 GHz coverage with a 17 dB ENR.

346CK01

346CK01 Noise Source, 1 GHz up to 50 GHz

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The Keysight 346CK01 is the ideal companion to Keysight's noise figure solutions when working on high-frequency applications.

346CK40

346CK40 Noise Source, 1 GHz up to 40 GHz

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The Keysight 346CK40 is the ideal companion to Keysight's noise figure solutions when working on high frequency applications. Since it is broadband (1 GHz to 40 GHz), it eliminates the necessity for several sources at different frequency bands.

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Get more functionality out of your existing hardware today by pairing it with the right accessories to improve productivity and the right Keysight PathWave design and test automation software to accelerate your product development.