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Regenerator section rx (sdh), Error analysis – EXFO FTB-8100 Series Transport Blazer for FTB-200 User Manual

Page 267

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SDH Tabs

SONET/SDH Application

255

Regenerator Section RX (SDH)

Regenerator Section RX (SDH)

Press Main, Test, SDH, RS, and RS RX.

Error Analysis

FAS (Frame Alignment Signal): A FAS defect indicates that at least one A1
or A2 byte of the FAS word is in error.

B1 (BIP-8, Bit-Interleave Parity - 8 bits): The BIP-8 error indicates a
Regenerator Section parity error by performing a routine even-parity check
over all frames of the previous STM-n signal.