Error/Alarm
detection
Error
Performance
Result
Frame Format
Transmitter Clock
Through mode
Timing : Manual, Burst
Alarm detection
E1
LOS, AIS, No Frame, No CRC4 MF, Distant, No sync, No CAS MF, Distant
MF
E3/E4
LOS, AIS, No Frame, Distant, No Sync
DS1
LOS, AIS, OOF, RAI, LLS
DS3
LOS, AIS, LOF, RAI, IDLE, LSS
Display : Second
Error Detection
E1
FAS, Pattern error, CRC4, CRC4 MFAS, E-bit, Code, Pattern slip, Frame
slip, Pattern block error for G.826
E3/E4
FAS, Code, Pattern error, Pattern slip, Pattern block error for G.826 (Code
is only available for E3.)
DS1
F-Bit, Pattern, CRC-6, S-Bit, BPV, Pattern slip, EXZ, Pattern block error for
G.826
DS3
BPV, Pattern error, Pattern slips, Parity, C-bit, F-bit, FEBE, Pattern block
error for G.826
Display : Count, Ration
G.821/G.826/M.2100 analysis of the received signal
Status
Current information on:
Alarms and errors
Input level indication
Actual bit rate
Frequency deviation
E1: CAS bits, FAS/non FAS bits
DS1: CAS bits, F-Bit, S-Bit
DS3: F-bits
Round trip delay
APS switching time (Only available in case of E1 or DS1.)
11.3.3 OTN
11.3.3.1 OTN Setup
OTU2, OTU1e, OTU2e, OTU1f, OTU2f, OTU1
Reference Clock
Internal clock
External clock
BITS
SETS
2MHz
10MHz
GPS
Received
Transparent, OH Overwrite Thr. (ALL OTU/ODU/OPU OH)
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