EXFO FTB-800 Series for FTB-1 - Manual (Page 271)

Test Results
NetBlazer 261
Alarms/Errors
Interface
Alarms

LOS (Loss Of Signal)
RX: Absence of an input signal or an all-zeros pattern is received.

Frequency
RX: The received signal frequency meets the standard specifications
(green) or not (red).
For Ethernet 10/100/1000M Electrical, 100M Optical, 1GE Optical, or
10GE LAN/WAN interface/rate, the frequency range is ± 100 ppm.
Interface Standard Rate Specification
DS1 1544000 ±36.6 ppm
E1 2048000 ±54.6 ppm
E3 34368000 ±24.6 ppm
DS3 44736000 ±24.6 ppm
STS-1e/STM-0e
OC-1/STM-0
51840000 ±20 ppm
E4 139264000 ±19.6 ppm
STS-3e/STM-1e
OC-3/STM-1
155520000 ±20 ppm
OC-12/STM-4 622080000 ±20 ppm
OC-48/STM-16 2488320000 ±20 ppm
OTU1 2666057143 ±20 ppm
OC-192/STM-64 9953280000 ±20 ppm
OTU2 10709225316 ±20 ppm
OTU1e 11049107143 ±100 ppm