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N1085A PAM-4 Measurement Application for Ethernet and OIF-CEI

Product Status: Discontinued | Currently Supported
This product is no longer available

No replacement found for this product.

Key Features & Specifications

Comprehensive measurement and debug solution

  • Performs PAM-4 measurements as outlined in draft documents for OIF-CEI 4.0 and IEEE 400G (P802.3bs)
  • Performs more than 25 tests
  • Level-based (noise, linearity), eye-based (EW6, EH6), jitter, and return loss tests

Flexible and extensible

  • Operates on 86100D DCA-X oscilloscopes or your personal computer
  • Control your device under test (DUT) and other equipment
  • Test all or selected parameters to compliance limits (proposed in draft specification document) or custom limits


  • 86100D Infiniium DCA-X mainframe


Reduce your test time from hours to minutes. Use the Keysight N1085A software application with your 86100D DCA-X Series oscilloscope to measure your Pulse Amplitude Modulation 4-Level (PAM-4) design according to the measurements outlined in draft standards such as;

  • OIF-CEI-56G-VSR-PAM4 Very Short Reach Interface
  • IEEE 400G (P802.3bs) 

Performs more than 25 tests including:

  • Level-based measurements (using linearity pattern)
    • Voltage levels
    • Level thickness (rms)
    • Level separation mismatch ratio (RLM), including Smin, Vavg, ES1, ES2
  • Output voltage tests
    • Differential pk-pk (Tx enabled/disabled)
    • AC common-mode output voltage
    • DC common-mode output voltage
  • Output waveform measurements
    • Steady-state voltage, Vf
    • Linear fit pulse peak
    • Signal-to-noise-and-distortion ratio (SNDR)
    • Normalized coefficient step size
    • Full-scale range tests
  • Return loss measurements using N1055A TDR or ENA/PNA