Viavi 4100 Series Quick Card

Quick Card
®
T-BERD /MTS-2000 Modular Test Set
DWDM Expert OTDR
This quick card describes how to connect to a fiber under test, configure Expert OTDR test setups, run
tests, and analyze results with a VIAVI T-BERD/MTS-2000 equipped with a 4100-series DWDM OTDR
module.
The DWDM OTDR is meant to test a specific wavelength on a live Dense Wavelength Division
Multiplexed (DWDM) network. Care must be taken to select and test the correct wavelength.

Equipment Requirements:

• T-BERD/MTS-2000 equipped with:
o Software Release V18.0 or greater
o ESMARTACQ Smart Acquisition option
(recommended)
• E4100 Series DWDM OTDR Module
(E41DWDMC-PC or E41DWDM-APC)
• Fiber optic cleaning and inspection tools
• Launch Cable (minimum 20-meter Fiber optic
patch cable)
• Optical Coupler to connect Launch Cable to
fiber under test
The following information is required to
complete the test:
• Type of Connectors (SC UPC, SC APC, LC)
• Distance unit (feet, meters, miles, kilometers)
• DWDM Wavelength to be tested

Fiber Inspection Guidelines:

• Use the VIAVI P5000i or FiberChek Probe
microscope to inspect both sides of every
connection being used (OTDR Port, Launch
Cable, bulkhead connector, patch cables, etc.)
• Focus the fiber on the screen. If dirty, clean
the connector.
• If it appears clean, run inspection test.
• If it fails, clean the fiber and re-run inspection
test. Repeat until it passes.
Figure 1: Equipment Requirements
Figure 2: E41DWDMC-APC OTDR Module
Figure 3: Inspect Before You Connect (IBYC)
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