EXFO FTB-8510B Guia Del Usuario página 1160

Common Tabs
Performance Monitoring (PM)
Far-End
EFS (Error Free Second): Gives the count of the seconds within which
no error occurred or when a defect is detected on the near-end.
EC (Error Count) (G.821 only): Gives the number of bit errors.
EB (Errored Block) (G.826, G.828, and G.829): Gives the count of
blocks in which one or more bits are in error.
ES (Errored Second): For G.826, G.828, G.829, M.2100 ISM, and
M.2101: Gives the count of the seconds within which one or more
anomalies (FAS, EB, etc.) occurred or at least one defect occurred.
SES (Severely Errored Second):
For G.826, G.828, G.829, and M.2101: Gives the count of the seconds
within which anomalies (FAS, EB, etc.) is ≥ X% or at least one defect
occurred. X = 30% for DSn/PDH signals; see the following table for
SONET/SDH signals.
Path
Line/MS
Section/RS 10%
510
STS-1 OC-3
STM-0 STM-1
30% 30% 30%
15% 15% 25%
30% 30%
OC-12 OC-48
STM-4 STM-16
30% 30%
30% 30%
30% 30%
FTB-8100 Series Transport Blazer
OC-192 OC-768
STM-64 STM-256
30%
30%
30%