N5511A Agilent Keysight HP Analyzer

The N5511A is a phase noise test analyzer from Agilent Keysight HP.


  • Designed for phase noise power users at the high end of the market
  • Flexible architecture lets you integrate exceptional reference sources — yours or ours — and confidently solve specific challenges faster
  • Multi-segment hardware cross-correlation in field programmable gate array (FPGA)
  • Absolute and residual phase noise using the phase detector (quadrature) method and cross-spectral averaging (cross­correlation) for sensitivity down to the kT thermal phase noise floor (-177 dBm/Hz)

The Keysight N5511A phase noise test system (PNTS) lets you measure at the limits of physics with readings down to kT (-177 dBm/Hz). The N5511A PNTS is a replacement for the gold-standard Keysight E5500 phase noise measurement system and is designed to meet the needs of phase noise power users.

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