Spectrum Analyzer Basics

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Source noise and unwanted spectral content can obscure low-level device under test (DUT) responses. The Keysight Pro XG7 Analog Signal Generator keeps them farther below the DUT response from 9 kHz to 20 GHz, with -135 dBc/Hz typical phase noise (10 GHz, 10 kHz offset), -150 dBc/Hz measured AM noise, and up to +22 dBm of clean, calibrated output on one or two independent channels in 2U.

  • Compare phase and AM noise: -135 and -150 dBc/Hz at 10 GHz, 10 kHz offset.
  • Resolve near-sensitivity receiver responses with a clean RF stimulus to 20 GHz. 
  • Distinguish DUT behavior from source effects using low-noise LO substitution. 
  • Establish a programmable RF reference for residual and cross-correlated phase-noise measurements.

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