Xgig Oculink, 4-lane Interposer Module for PCI Express 4.0

Interposer Module for PCI Express 4.0 Platform

The PCIe4, 4-lane OCulink/Slimline Interposer enables debug of new ICs, hardware designs, FPGA firmware, system BIOS and software. Error-injection is supported.

The VIAVI Solutions Xgig® OCulink 4-lane Interposer for PCI Express 4.0 enables debug and verification of new ICs, new system hardware designs, FPGA firmware, validation of system BIOS and software—and supports manufacturing test. It provides connection between the VIAVI 4K Analyzer/Jammer platform and a system under test. This Interposer can also be used for Slimline tests using the included OCulink to Slimline cables. This Interposer uses high-speed linear signal redrivers to buffer the system data signals ensuring a clean signal is delivered to both the Analyzer and the devices-under-test (DUT) for accurate protocol capture and analysis. 


  • Operates up to 16GTps, PCIe 4.0 data rates
  • Downward compatible with PCIe 1.0, 2.0 and 3.0 data rates of 2.5, 5.0 and 8.0GTps
  • OCulink host and target connectors support PCIe links of up to and including 4-lanes
  • Supplied with two, high-performance SFF-8674 equivalent custom cables for Analyzer attachment
  • Data path uses high-speed linear redrivers to ensure good signal capture with minimal tuning
  • Supports Analyzer side-band signal triggering and capture via custom cable
  • Provided with Slimline 4-lane to 4-lane OCulink conversion cables
  • Two cables supplied for optional clocking sources
  • Interposer power is independent of host system.
  • A 120/220 AC in, 12V/3A DC output converter is included
  • LEDs give quick indication of power and operation
  • Works together with VIAVI Xgig 4K Analyzer platforms
  • Provides consistent, repeatable capture of link training, equalization negotiation and other data
  • Up to four Interposers are stackable to support wider length widths
  • Supports Jammer error injection for deep system analysis
  • Supported by Xgig tool suite including Trace Control, Expert™ and Serialytics™


  • Enables protocol analysis of communication between a 4-lane host port and an attached endpoint device connected via an OCulink or Slimline cable
  • Used for IC development, debug and validation, subsystem and system-level testing, firmware and driver development and validation, and performance analysis
  • Enables error-injection for reproducing failures and for system recovery analysis
  • Works together with the VIAVI Xgig4K Analyzer/Jammer platform


  • Faster analysis and problem isolation
  • Quicker time to market and earlier revenue
  • Lower engineering costs
  • One interposer supports two PCIe cabling types
  • Provides consistent, repeatable capture of link training, equalization and other in-band and side-band data