The Keysight 346B noise source is the ideal companion to Keysight's noise figure solutions. Since it is broadband (10 MHz to 18 GHz), it eliminates the necessity for several sources at different frequency bands. The low SWR of the noise source reduces a major source of measurement uncertainty, which are reflections of the test signals. Add special option H01 for high ENR (21 dB typical) to measure high noise figure devices, or option H42 for measuring Direct Broadcast Satellite (DBS) low noise block converters.

  • Frequency range: 10 MHz to 18 GHz    
  • VSWR: < 1.3:1
  • Connectors: BNC (f) input bias / 3.5 mm (m)
  • Low SWR for reducing noise figure measurement uncertainty
  • Individually calibrated ENR values at specific frequencies

Key Specifications

Maximum Frequency
18 GHz
Maximum Frequency
18 GHz
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ENR Range:
14 to 16 dB
ENR Automatic Download:
Excess Noise Ratio (ENR):
14-16 dB
Frequency Range:
10 MHz to 18 GHz
Maximum Frequency:
18 GHz
Minimum Frequency:
10 MHz
Minimum Frequency Range:
10 MHz
Temperature Compensation:
Works with:
NFA, ESA-E Series, PNA-X, PSA-Series, X-Series (PXA, MXA, EXA, CXA)
346B Noise Source

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