EXFO FTB/IQS-88000 Series Power Blazer for FTB-2/2Pro/500/IQS-600 - Manual (Page 118)

Test Setup - Test Configurator, Timer, and System
106 FTB/IQS-88000 Series
BERT and Unframed BERT
Service Disruption
The Service Disruption Time (SDT) corresponds to the duration associated
to a defect that occurred in the network. For example a disruption that
occurs during a network switching from the active channels to the backup
channels or vice versa.
Note: The service disruption measurements are cleared when changing the
criteria. Service Disruption is not available for Multi-Pattern.

Defect allows to choose on which layer and defect the service
disruption time test will be performed. Choices depend on the
selected test path.
Layer Defect
Interface LOS
Section/RS LOF-S/RS-LOF, B1
Line/MS AIS-L/MS-AIS, RDI-L/MS-RDI, REI-L/MS-REI, B2
STS/AU Path AIS-P/AU-AIS, LOP-P/AU-LOP, RDI-P/HP-RDI, REI-P/HP-REI, B3, UNEQ-P/HP-UNEQ, PDI-P
(SONET)
VT/TU Path AIS-V/TU-AIS, LOP-V/TU-LOP, UNEQ-V/LP-UNEQ, RDI-V/LP-RDI, REI-V/LP-REI, BIP-2
OTL a
a. The service disruption time measurement is available per lane for OTL defects at the exception of LOL
which is global for all lanes. Refer to OTL-SDT on page 331 for results per lanes.
LOF, OOF, LOL, LOR, OOR, Inv. Marker, FAS
FEC FEC CORR, FEC UNCORR
OTUk b
b. Only available on the top layer.
AIS, LOF, OOF, LOM, OOM, BDI, IAE, BIAE, BIP-8, BEI, FAS, MFAS
ODUk b AIS, OCI, LCK, BDI, BIP-8, BEI, FSF, BSF, FSD, BSD
OPUk b AIS, CSF, PLM c , MSIM d
c. Available when the PLM check box is selected (refer to page 137 for more information).
d. Available with multiplex test only.
BER e
e. Available when the RX Pattern Analysis check box (see page 102) is selected.
Pattern Loss, Bit Error (default)