Viavi T-BERD 5800 User manual

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Quick Card
T-BERD 5800 Network Tester
C37.94 Bit Error Rate Testing (BERT)
This quick card describes how to configure and run a C37.94 Optical Bit Error Rate Test to a hard loop
or another similarly configured T-BERD/MTS 5800.
Equipment Requirements:
•T-BERD 5800 equipped with the following:
oBERT software release V27.2 or
greater
oC5C3794 ITU C37.94 Optical BERT
option
oC37.94 capable optical transceiver
(SFP) to match the line under test
•Patch cables to match the optical
transceiver and the line under test
•Fiber optic inspection microscope
(P5000i or FiberChek Probe)
•Fiber optic cleaning supplies
Figure 1: Equipment Requirements
The following information is required to complete the test:
•Clock Source (Internal or Recovered)
•Data Rate (Number of 64K Channels)
•Test Pattern(s)
•BER Pass/Fail Threshold
Fiber Inspection Guidelines:
•All fiber end-faces must be clean and pass an
inspection test prior to connection.
•Use the VIAVI P5000i or FiberChek Probe
microscope to inspect both sides of every
connection being used (SFP Port, bulkhead
connectors, patch cords, etc.)
Figure 2: Inspect Before You Connect

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Connect to Fiber Under Test:
1. Insert C37.94 optics into the Port 1
SFP/SFP+ slot on the top of the
T-BERD/MTS.
2. After inspecting the fiber end faces, connect
the C37.94 optics to the fiber under test
using an LC-LC jumper cable.
Figure 3: T-BERD/MTS 5800v2 Dual Port mainframe
Launch and Configure Test:
1. Press the Power button to turn on
the test set.
2. Press the Test icon at the top of
the screen.
3. Using the Select Test menu, Quick Launch
menu, or Job Manager, launch the C37.94
BERT►P1 Terminate test.
Figure 4: Launch Screen
4. Tap to open the Tools Panel and
select .
5. Press to continue.
6. Press the Setup Soft Key, , on the
top right side of the screen.
Figure 5: Tools Panel

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7. Review the displayed SFP information to
verify that the correct optics are installed.
8. Select the Signal folder and configure the
Clock Source:
•Select Internal if the T-BERD/MTS is
to provide clock to the Multiplexor
•Select Recovered if the Multiplexor is
providing clock to the T-BERD/MTS.
•Note: Only one device on the C37.94
circuit should be set to provide
internal clock. Multiple Clocks will
cause intermittent Bit/TSE Errors and
Patterns Slips.
Figure 6: Signal Setup
9. Tap Payload to display data rate settings.
10. Enter the value for N, the number of 64K
channels on the interface (1 through 12).
11. Press the Results Soft Key to view the
Test Results screen.
Figure 7: Payload Setup
12. Using the drop-down menus, select
“Payload/BERT” for the right Results
display.
13. Select the Laser tab in the Actions panel,
and tap . The button will turn
yellow and be relabeled .
14. Press the Restart soft key .
15. Verify the following:
•Signal Present LED is green
•Frame Sync LED is green
•Pattern Sync LED is green
•Summary/Status results shows
‘ALL SUMMARY RESULTS OK”
Figure 8: Results

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Product specifications and descriptions in this
document are subject to change without notice.
16. 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)
Figure 9: Test Results Screen, Payload/BERT
17. In the T-BERD/MTS’s Quick Config menu,
change “Pattern” to the next value in the
test plan.
18. Press the Restart soft key to reset
results.
19. Allow test to run for desired duration and
verify the following:
•Pattern Sync LED is green.
•Bit/TSE Error Rate does not exceed
your required threshold. (0.00E+00 if
pass/fail threshold unknown)
Figure 10: Test Plan
20. Repeat steps 17 through 19 for all Patterns in the test plan. Patterns may include:
•QRSS
•All Zeros
•Delay
Simulates live traffic
Tests for DS1 channels mis-optioned for AMI
Measures Round Trip Delay (RTD) instead of Bit Errors (RTD
values are shown instead of BER in the “Payload/BERT” results
display)