Viavi T-BERD/MTS-4000 v2 Parts list manual

VIAVI Solutions
Quick Card
T-BERD®/MTS-2000 Modular Test Set
CWDM OTDR Smart Test Assistant
This quick card describes how to connect to a fiber under test and use the Smart Test Assistant to
configure test setups, run tests, and analyze results on a VIAVI T-BERD/MTS-2000 equipped with a
4100-series CWDM OTDR module.
The CWDM OTDR is meant to test a specific wavelength on a live Coarse Wavelength Division
Multiplexed (CWDM) network. Care must be taken to select and test the correct wavelength.
Equipment Requirements:
•T-BERD/MTS-2000 equipped Software
Release V18.0 or greater
•E4100 Series CWDM OTDR Module
(E41CWDMC10L, E41CWDM10U, or
E41CWDM8U)
•Fiber optic cleaning and inspection tools
•Launch Cable (minimum 20-meter Fiber optic
patch cable) with connectors matching the
OTDR port and Fiber Under Test
•Optical Coupler to connect Launch Cable to
fiber under test
Figure 1: Equipment Requirements
The following information is required to
complete the test:
•Type of Connectors (SC UPC, SC APC, LC, etc.)
•Distance unit (feet, meters, miles, kilometers)
•CWDM Wavelength to be tested
Figure 2: E41CWDMC-APC OTDR Module
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 3: Inspect Before You Connect (IBYC)

VIAVI Solutions
Connect to Fiber Under Test (FUT):
All fibers and connectors should be inspected and clean prior to connection, as described on page 1.
The OTDR may be connected to the FUT via an optical patch panel (OPP) or a coupler if testing a live
CWDM System:
Figure 4: Connecting to Fiber Under Test
1. Inspect the OTDR port on top of the test set.
2. If the interface to the FUT is a patch cord, connect the patch cord to an optical coupler with the
same connector type.
3. Inspect the FUT connected to the coupler or OPP port.
4. Inspect the fiber end face of the Launch Cable.
5. Connect the Launch Cable to the OTDR port.
6. Inspect the other fiber end face of the Launch Cable.
7. Connect the Launch Cable to the coupler or OPP port.
8. Disconnect or disable the far end SFP on this wavelength.

VIAVI Solutions
Setup Test:
1. Press the ON/OFF button to turn on the test set.
2. Press the Home button to display the Home
view.
3. Tap the SMART TEST icon until it is yellow and
highlighted .
4. Select a configuration file:
•Select the EXPRESS configuration file to setup
the T-BERD for 5 second acquisitions to
quickly confirm loss and distance.
•Select the CERTIFICATION configuration file
to setup the T-BERD for 20 second
acquisitions to confirm loss and distance AND
analyze all events (splices, connectors, etc.)
•Tap to select a user configuration file
stored in the /disk/fiber/config folder.
5. Tap to load the configuration and view the
SMART TEST Setup screen.
6. Laser: If the wrong wavelength is selected, tap to
deselect. Tap and select the correct wavelength
to test.
7. Distance Unit: Tap the desired unit of measure
for the launch cable.
8. Launch Cable:
a. Tap YES if you are using a Launch Cable.
b. Tap the icon to enter or measure the
Launch Cable length.
c. If the launch cable length is known, tap
to clear existing text, enter new value on the
keypad, and tap to return.
d. To measure the launch cable length, tap
Measure and tap Confirm. The measured
value will auto-populate when measurement
is finished.
Note: The Launch Cable should not be
connected to the Fiber Under Test during
measurement.
9. Alarms: Choose User for Viavi recommended
Pass/Fail limits.
10. Distance Unit: If you wish to use a different unit
of measure for the test results, change the unit of
measure to the desired value.
Figure 5: Home Screen
Figure 6: Smart Test Configuration File
Figure 7: Smart Test Setup

VIAVI Solutions
Contact Us +1 844 GO VIAVI
([phone])
To reach the VIAVI office nearest you,
visit viavisolutions.com/contacts.
© 2020 VIAVI Solutions Inc.
Product specifications and descriptions in this
document are subject to change without notice.
Run Test:
1. Tap to start the test. After auto-
configuration, the OTDR will perform a
connection check to ensure that the
connection is Good and will test at the
configured wavelength.
2. Overall test results (Pass or Fail) will be
displayed in a pop-up window. Tap the
window to close it.
3. Results may be viewed in 2 formats.
Tap the Trace/SmartLink soft key to toggle
between views.
•SmartLink view: The FUT is displayed as a
series of icons representing each event
(mux/demux, connector, splice, etc.).
▪The center display shows summary results for
the entire span. Acquisitions for which all
events are acceptable are marked with a
green check . Acquisitions with events
that exceed pass/fail thresholds for loss or
reflectance are marked with a red .
▪The lower display shows each event that
exceeds alarm thresholds.
▪Tap an event icon and tap the Event View soft
key to show detailed results for the event.
•Trace view: Graphical result for the
wavelength are shown in the upper display.
Use the following controls to change the
display:
▪Toggle between single event and multiple
event view in lower display.
Tap the Zoom soft key to enable the following
controls:
▪Toggle between auto zoom and full trace
view.
▪Expand and contract trace.
Figure 8: Connection Check
Figure 9: SmartLink view
Figure 10: Trace view
4. Repeat steps 1 and 2 for all wavelengths and fibers under test being careful to check and double
check the wavelength to be tested.