EXFO FTB-8100 Series Transport Blazer for FTB-200 - Manual (Page 139)

Port Tabs
SONET/SDH Application 127
Port RX (Optical Interfaces)
Alarm Analysis
³
LOS (Loss Of Signal) indicates that there is no input signal or an
all-zeros pattern on the incoming SONET/SDH signal persists for more
than 100 μs.
³
Frequency alarm indicates that the received signal rate meets the
standard rate specifications (green) or not (red).
Interface Standard Rate Specification
OC-3/STM-1 155520000 ±3826 bps (±24.6 ppm)
OC-12/STM-4 622080000 ±15304 bps (±24.6 ppm)
OC-48/STM-16 2488320000 ±61213 bps (±24.6 ppm)
OTU1 2666057143 ±65585 bps (±24.6 ppm)
OC-192/STM-64 9953280000 ± 244851 bps (±24.6 ppm)
OTU2 10709225316 ± 263446 bps (±24.6 ppm)
OTU1e 11049107143 ± 1155737 bps (±104.6 ppm)
OTU2e 11095727848 ± 1160613 bps (±104.6 ppm)
OTU1f 11270089286 ± 1178851 bps (±104.6 ppm)
OTU2f 11317642405 ± 1183825 bps (±104.6 ppm)