The N8975B high performance noise figure analyzer is designed to make fast, accurate and repeatable noise figure measurements. When paired with an SNS Series noise source and U7227 Series USB preamplifier the ENR data from the SNS and USB preamplifier data automatically downloads into the N8975B. The N8975B has a multi-touch interface that allows stretch, pinch, and drag gestures. Most menus can be accessed with the tap of a finger without changing screens.

Noise source calibrations for Y-Factor measurements have been streamlined by allowing combined calibrations for up to 12 DUT setups in a single step. Saving valuable test time can be achieved for many types of DUT’s by using the internal calibration feature, which does not require a user calibration to be performed.

A built-in noise figure uncertainty calculator can prepopulate data from the SNS noise source, USB preamplifier, as well as all the required instrument parameters such as analyzer noise figure, gain and noise figure uncertainty, and match. Default noise figure settings offer simultaneous noise figure and gain measurements. By using Table view several measurements including Noise Figure, Noise Factor, Y-Factor, Gain, Phot, Pcold, and Teffective can be viewed simultaneously in tabular form.

  • Frequency range 10 MHz to 26.5 GHz in a one-box solution
  • Multi-touch interface
  • Includes Spectrum Analyzer and IQ Analyzer (Basic) modes
  • Built-in standard options include P26, PFR, FSA, NFE, and B25
  • N-type (f) input connector
  • SNS series noise source compatibility
  • U7227C 100 MHz to 26.5 GHz External USB Preamplifier included

Key Specifications

Maximum Frequency
26.5 GHz
Maximum Frequency
26.5 GHz
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8 MHz
Frequency Range:
10 MHz to 26.5 GHz
Gain Uncertainty:
±0.15 dB
Maximum Frequency:
26.5 GHz
Minimum Frequency:
10 MHz
Minimum Frequency Range:
10 MHz
Noise Figure Uncertainty:
±0.02 dB using a 4-6 dB ENR Noise Source
18.3 ms/measurement
N8976B high performance noise figure analyzer

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