EXFO AXS-200/850 Ethernet Test Set - Manual (Page 109)

BERT
Ethernet Test Set 99
Global Configuration
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Invert: Enable or disable Invert. If enabled, the test pattern is
transmitted/analyzed with all bits inverted meaning that every 0 is
changed to 1, and every 1 to 0. For example, the pattern 1100 will be
sent as 0011. The test pattern inversion is disabled by default.
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Duration: Set the duration of the test. The choices are as follows:
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15-Min
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1-Hour
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2-Hours
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4-Hours
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6-Hours
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12-Hours
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24-Hours
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User Defined
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Disabled: Runs the test for infinite time. It can be stopped
manually at any point of time.
The default value is Disabled. Select the duration field next to User
Defined and a pop up menu will be displayed to configure the test
duration.
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No Traffic Time: The No Traffic Time configuration allows a user to set
the time between two Ethernet Frames that is acceptable without
raising an alarm. It also describes when a Service Disruption event
occurs. Enter the acceptable delay between the two frames. The
acceptable range is from 0.01 ms to 1000 ms. The default value is
1000 ms.