VIAVI Solutions T-BERD User manual

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T-BERD/MTS 5800 Portable Network Tester
T-BERD/MTS-5800 Portable Network Tester
QUICK CARD
SONET Bit Error Rate Testing (BERT)
This quick card describes how to configure and run a SONET Bit Error Rate Test at the full
concatenated line rate. Please note that the T-BERD can also test channelized payloads
(DS1, VT1.5, and STS-n). Please refer to the T-BERD 5800 User’s Guide for information.
•T-BERD/MTS 5800 equipped with the following:
oBERT software release V30.1.0 or greater
oC5LSSONSDH test option for OC-3 and OC-12
oC525GSONSDH test option for OC-48
oC510GSONSDH test option for OC-192
•Optical Transceiver supporting the Optical Carrier level to be
tested (SFP or SFP+)
•LC Attenuators (5dB, 10dB, and/or 15dB)
•Cables to match the optical transceiverand the line under test
•Fiber optic inspection microscope (P5000i or FiberChek Probe)
•Fiber optic cleaning supplies Figure 1: Equipment Requirements
LAUNCH TEST
1. Press the Power button to turn on the
T-BERD.
2. Press the Test icon at the top of the
screen to display the Launch Screen.
3. Using the Select Test menu, Quick Launch
menu, or Job Manager, launch the SONET
Bulk BERT test on Port 1 for the desired
Optical Carrier level. For Example:
SONET►OC-3►STS-3c Bulk BERT►P1 Terminate.
4. Tap to open the Tools Panel and
select .
5. Press to continue.
Figure 2: Launch Screen
Figure 3: Tools Panel

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T-BERD/MTS 5800 Portable Network Tester
T-BERD/MTS-5800 Portable Network Tester
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2
•The followingInformation is needed to
configure the test:
•Optical wavelength
(typically, 1310nm or 1550nm)
•Test Pattern(s) (default is 2^23-1 ANSI)
•BER Pass/Fail Threshold
1. Press the Setup soft key on the top
right side of the screen.
2. Select the Interface/Connector folder.
3. Insert desired SFP into the Port 1 SFP+ slot
on the top of the T-BERD.
4. Review SFP information in the Connector
tab:
►Verify that the SFP operates on the
required wavelength (1310nm or
1550nm).
►Verify that the SFP supports the
required optical carrier level (OC-3,
OC-12, OC-48, or OC-192).
►Note the Min and Max Tx Levels (dBm)
and Max Rx Level (dBm) to assess if
optical attenuators are required.
5. Select the indicated folders and configure
your test as follows. Leave all other values
at default, unless specified in the work order.
6. Press the Results soft key to view the
Test Results screen.
Figure 4: Work Order
CONFIGURE TEST
Folder
Option
Value(s)
Interface,
Signal
Clock
Source
Select “Recovered”
unless you are testing
dark fiber with no SONET
equipment
Pattern
Pattern
Mode
ANSI
Pattern
2^23
-1 ANSI
Figure 6: Setup, Interface/Signal
Figure 7: Setup, Pattern
Figure 5: Setup, Interface/Connector/SFP

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T-BERD/MTS 5800 Portable Network Tester
T-BERD/MTS-5800 Portable Network Tester
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RUN TEST
1. Using drop-down menus , select
“Payload/BERT” for the right results display.
2. Select the Laser tab in the Actions panel,
and press . The button will turn yellow
and be relabeled .
3. Press the Restart soft key .
4. Verify the following:
►Level (dBm) is within the Rx Level range
of the SFP.
►Summary LED is green.
►Signal Present LED is green.
►Frame Sync LED is green.
►Path Pointer Present LED is green
►Pattern Sync LED is green.
►Summary/Status results shows ‘ALL
SUMMARY RESULTS OK”
5. Allow the test to run for desired duration and
verify the following:
►Bit/TSE Error Rate result does not
exceed your required threshold.
(0.00E+00 if pass/fail threshold unknown)
CONNECT TO LINE UNDER TEST
•Use the VIAVI P5000i or FiberChek Probe
microscope to inspect both sides of every
connection being used (SFP, attenuators, patch
cables, bulkheads)
►Focus fiber on the screen.
►If it appears dirty, clean the fiber end-face
and re-inspect.
►If it appears clean, run inspection test.
►If it fails, clean the fiber and re-run inspection
test. Repeat until it passes.
•If necessary, insert optical attenuators into the
SFP TX and/or RX ports.
•Connect the SFP to the port under test using a
jumper cable compatible with the line under test.
Figure 9: Results, Payload BERT
Figure 8: Inspect Before You Connect
Status Tip
Signal Present LED
not green
Check your cables. Tx and Rx may be
reversed.
Path Pointer Present
LED not green
and AIS-P alarm on
There may be no loop or no connectivity to
the loop. The wrong payload may be
selected (concatenated vs. channelized).
RDI-L alarm on
The Tx Level is too high.
Add an attenuator between the SFP Tx port
and the line under test.
Path Pointer
Adjustments incrementing
Clock Source is set incorrectly.
Change Clock Source to “Recovered.”
Figure 10: Troubleshooting Tips

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T-BERD/MTS 5800 Portable Network Tester
T-BERD/MTS-5800 Portable Network Tester
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© 2022 VIAVI Solutions, Inc,
Product specifications and descriptions in this
document are subject to change without notice.
Patented as described at viavisolutions.com/patents
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CREATE REPORT
6. In the T-BERD’s Quick Config menu, change
“Pattern” to the next value in the test plan.
7. Press the Restart soft key to reset results.
8. Allow test to run for desired duration and verify
the following:
►Pattern Sync LED is green.
►Bit/TSE Error Rate or Round Trip Delay
does not exceed your required threshold.
►Repeat steps 6 through 8 for all Patterns
in the test plan. Patterns may include:
▪Delay: Measures Round Trip Delay
(RTD) instead of Bit Errors.
RTD values are shown instead of BER
in the “Payload/BERT” results display. Figure 11: Results, Quick Config
1. Tap to open the Reports Panel and
select . .
2. Tap .
3. A report will be saved to the T-BERD 5800’s
/bert/reports folder.
Figure 12: Create Report