DWDM Optical Channel Checker Module (OCC-4056C)

4100 Series Module for T-BERD/MTS-2000 V2, -4000 V2, -5800 and OneAdvisor 800/1000 Platforms

The OCC-4056C module offers the functionality and speed of an OSA in a handheld form factor at a fraction of the price of a traditional OSA. It is an ideal test tool for metro/access links and DWDM systems.

Learn more about DWDM from our DWDM resource page

The OCC-4056C is the most complete DWDM optical channel checker (OCC) on the market. The OCC-4056C module for the T-BERD/MTS-2000, -4000 V2 and -5800 and OneAdvisor 800 platforms offers OSA like functionality and speed in a handheld form factor, perfect for successfully deploying and maintaining wavelength routes for Fiber Deep, Remote PHY, C-RAN and 5G applications. It is an ideal test tool for service providers to install, maintain and upgrade metro/access links and DWDM systems. It measures wavelengths and power levels of DWDM channels and displays the complete spectrum.


  • Qualify any DWDM channel Frequency and Power level
  • Supports C-band applications (Ch62 to Ch12)
  • Simple for a novice, fully featured for an expert
  • Can be combined with DWDM OTDR modules
  • Field interchangeable module (single slot size)


  • Validate wavelength routes for Fiber Deep & Remote-PHY, C-RAN & 5G
  • Qualify forward/return path links through Mux and Demux
  • Spectral and drift testing on DWDM sources
  • Performance verification in Metro Access Networks
  • Maintenance and troubleshooting of DWDM networks

Key Features

  • Supports ITU-T G.692 DWDM grid with 50/100 and 200GHz channel spacing
  • Complete spectral trace & fast scanning speed (<4s)
  • Drift measurements for wavelength and power
  • Zoom and marker functions
  • Pass/Fail analysis
  • Dual SFP/SFP+ slots for fixed or tunable SFP/SFP+


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    Our products live in rugged environments for over 10 years with 1000s of test connect/disconnect cycles.  We will be there to support you to ensure components that require maintenance like connectors, batteries, and software updates to ensure you are ready to test accurately for years to come. We apply factory procedures that use fast, automated calibration and functional verification, maintenance using OEM parts and the application of all engineering change orders and software updates. Services are available through contract Care plans, FleetCare or per incident as requests. 

    Top 4 Reasons to Choose VIAVI for Your Repair and Calibration Needs:

    • Minimize business disruption
    • Budget
    • Measurement Accuracy and Product Reliability
    • Measurement Compliance, TL9000 certification and OEM Standards

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