Exfo RTU 310-310G IP Services Test Head User Manual download pdf (Page 368)

100

101

Advanced Tab

356 FTB-8500 Series and FTB-8120NGE/8130NGE

Service Disruption Time (SDT)

Configuration

Select the criteria that will be used for the SDT measurement.

Note: The service disruption measurements are cleared when changing the

criteria.

 Measurement Mode: Select the SDT measurement mode. Choices are

Defect Mode and No Traffic Mode. The default setting is Defect Mode.

Defect Mode is based on the detection of defects including LOS, Link

down, Invalid FCS, LSS, and Bit errors in the payload. The SDT

measurement is the time between the first defect and either the end of

the last defect preceding the No Defect Time period, or the end of the

test period.

No Traffic Mode is based on the absence of traffic. The SDT

measurement is the time between the end of the last received frame

and either the beginning of a new received frame, or the end of the test

period.

 No Traffic Time: Available for No Traffic Mode only. No Traffic Time is

a configured value which raises a defect if no Ethernet frame is

received during the defined test period. Choices are:

Unit choices are μs, ms, and s. The default setting is 10000 μs.

 No Defect Time: Available for Defect Mode only. No Defect Time

represents the period without any defects before stopping SDT

measurement. Choices are from 20 to 99990 μs for 10/100/1000Mbps

and 10 to 99000 μs for 10Gbps The maximum value is adjusted with

respect to the test period (the max No Defect Time is obtained when

Rate No Traffic Time range

10/100/1000Mbps 10 to 99990 μs for RTU-310

10Gbps 10 to 100000 μs for RTU-310G

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Exfo RTU 310-310G IP Services Test Head User Manual Page 368

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