The SNS series N4000A is a 10 MHz to 18 GHz noise source with nominal ENR 6 dB. The N4000A noise source is designed for accurately measuring devices with low noise figure, or devices whose gain is especially sensitive to small changes in source impedance. DUT's with noise figure up to 20 dB can be accurately and reliably measured with this device. The N4000A noise sources has a choice of connectors, with an APC 3.5(mm) connector as standard.

  • Electronic storage of Excess Noise Ratio (ENR) calibration data decreases the opportunity for user error
  • Automatic download of ENR data to the NFA speeds overall set-up time
  • Temperature compensation improves measurement accuracy leading to tighter specification of device performance
  • 3.5mm connector ships standard, optional Type-N connector is available as Option 001

Key Specifications

Maximum Frequency
18 GHz
Maximum Frequency
18 GHz
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ENR Range:
4.5 to 6.5 dB
ENR Automatic Download:
Excess Noise Ratio (ENR):
4.6-6.5 dB
Frequency Range:
10 MHz to 18 GHz
Maximum Frequency:
18 GHz
Minimum Frequency:
10 MHz
Minimum Frequency Range:
10 MHz
Temperature Compensation:
Smart Noise Source (SNS Series)
Works with:
NFA, ESA-E Series, X-Series (PXA, MXA, EXA, CXA)

Standard Configurations

N4000A SNS Series Noise Source

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