EXFO AXS-200/850 Ethernet Test Set - Manual (Page 105)

Ethernet Test Set 95
9 BERT
The Bit Error Rate Test (BERT) measures the level of transmission
impairment on a communication channel. Specific test patterns are sent
through Ethernet frames and then analyzed to detect data integrity
problem (bit error).
The BERT test case offers several options:
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Traffic configuration:
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Ethernet or Ethernet/IPv4/UDP (when the IPV4 version is selected)
Ethernet or Ethernet/IPv6/UDP (when the IPv6 version is selected)
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Frame size
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Transmit rate
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Test pattern
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Capability to change dynamically the rate and frame size while the test
is running.
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Injection of impairments on the transmitted traffic (bit errors).
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Capability to reset all results/statistics while the test is running.
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Errors/Alarms monitoring.
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Capability to measure the service disruption time based on no traffic
received (No Traffic mode).
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Global verdict based on bit error count & SDT or bit error rate & SDT.
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Capability to configure and view the list of recorded events while a test
case was running, including threshold crossing events.
Although the AXS-200/850 Ethernet Test Set has a single port, both
unidirectional and bidirectional BERT testing can be performed.