Exfo FTB-8500 Series for FTB-200 Manual de usuario descargar pdf (Pagina 375)

100

101

System Tabs

Ethernet and Fibre Channel Application 361

Clock Synchronization

 Line Coding: Allows the selection of the interface line coding. Choices

are:

For DS1: AMI and B8ZS. The default setting is B8ZS.

For E1: AMI and HDB3. The default setting is HDB3.

 Framing: Allows the selection of the interface framing. Choices are:

For DS1: SF, and ESF. The default setting is SF.

For E1: PCM30, PCM30 CRC-4, PCM31, and PCM31 CRC-4. The default

setting is PCM30.

Alarm Analysis

Note: Only LOPPS-L alarm is available with 1PPS signal.

 LOS (Loss Of Signal): The LOS alarm indicates absence of an input

signal or an all-zeros signal is received.

 AIS (Alarm Indication Signal): The AIS alarm is declared when an

unframed all-ones signal is received.

 LOF (Loss Of Frame):

For DS1:

 With SF Framing: The Loss-of-Frame condition will be assumed

when 2 terminal frame and/or signaling frame errors in 5

consecutive frames have been received.

 With ESF Framing: The Loss-of-Frame condition will be assumed

when 2 FPS frame errors in 5 consecutive frames have been

received.

For E1: The Loss-Of-Frame condition will be assumed when three

consecutive incorrect frame alignment signals have been received.

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Exfo FTB-8500 Series for FTB-200 Manual de usuario Pagina 375

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