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Discontinued 16850 Series Portable Logic Analyzer with 2.5 GHz Timing in Deep Memory

The industry’s fastest timing capture with deep memory – for fast digital system debug.

Timing analysis (asynchronous sampling)

  • 2.5 GHz / 5 GHz (400 ps / 200 ps) conventional and transitional timing analysis in deep memory (full / half channel)
  • Up to 128M / 256M deep memory (full / half channel)
  • 12.5 GHz (80 ps) Timing Zoom with 256 K memory

State analysis (synchronous sampling)

  • 350 MHz state clock / 700 Mbps data rate (standard)*
  • 700 MHz state clock / 1400 Mbps data rate (optional)*
  • Up to 128M deep memory
  • Reliable measurements on eye openings as small as 200 ps by 100 mV


  • Single-ended direct connect flying lead, Mictor and Soft Touch Pro
  • Compatible with U4201A cable plus any 90-pin header single-ended or differential probes

* Custom store qualification timing mode used for < 12.5 MHz clock rates for equivalent state mode

For more information about logic analyzer, please visit Keysight Logic Analyzer.