Instruction Manual

ONT-5xx 40/43 Gb/s Test Solution
11
Alarm detections
SDH OOF, LOF, MS-AIS, MS-RDI, RS-TIM, AU-AIS, AU-LOP,
HP-TIM, HP-UNEQ, HP-PLM, HP-RDI, Pattern Loss
SONET OOF, LOF, AIS-L, RDI-L, TIM-L, AIS-P, LOP-P,
TIM-P, UNEQ-P, PLM-P, RDI-P, PDI-P, PLM-P,
ERDI-P-Payload, ERDI-P-Server,
ERDI-P-Connect, Pattern Loss
Resolution 100 ms
Result display of errors and alarms
Numerical display
Count, ratio and duration are displayed for each error
Duration is displayed for each alarm
Tabular display
Display of all results with time stamps
Criteria Start, stop, duration, count
Graphical display
Display of all events as bar graphs versus time. Cursors allow easy
identification and zooming (in and out) on results. Filters enable
event selection.
Time axis Second, minute, hour
Intermediate bit error
In addition to the long term bit error measurement, intermedi-
ate results are available.
Interval 1 s up to 3600 s,
Results Current/previous interval,
Count and ratio
Trigger output
Generates an external trigger signal at the detection of the received
event.
Types
SDH Off, frame trigger, LOF alarm, OOF alarm, MS-AIS alarm,
AU-AIS alarm, B1, B2, B3, Bit errors
SONET Off, frame trigger, LOF alarm, SEF alarm, AIS-L alarm,
AIS-P alarm, B1, B2, B3, Bit errors
Pulse output Event present, logical high
Level TTL compatible, high >2.4 V, low <0.8 V
Connector BNC, 75 Ω
Overhead analyzer
Display of Overhead on the GUI.
Message evaluation (TIM/PLM)
J0, J1 1 byte, 16 bytes with CRC or 64 byte sequence•
J0, J1 clear text display•
TIM evaluation: exception value editable as criterion for TIM•
C2 signal label clear text selection•
PLM Evaluation: exception value editable as criterion for PLM•
Service disruption test
To analyze service disruption times, the ONT-5xx generates a high-
speed event list as a result of all detected events.
Sensor to trigger service disruption test, selectable
Errors
SDH FAS, B1, B2, MS-REI, B3, HP-REI, bit errors/pattern loss
SONET FAS, B1, B2, REI-L, B3, REI-P, bit errors/patt. loss
Alarms
SDH LOS, LOF, OOF, MS-AIS, MS-RDI, AU-AIS, AU-LOP ,
HP-UNEQ, HP-PLM, HP-RDI,
SONET LOS, LOF, SEF, AIS-L, RDI-L, AIS-P, LOP-P, UNEQ-P,
PLM-P, PDI-P, RDI-P
Event sample resolution 100 µs
Separation time 0.1 ms to 100000 ms
Separation time starts at the end of the last event. Separation time
is used to determine if the following event is a continuation of the
same disruption (event occurs within separation time) or the start
of the next disruption (event occurs after separation time has
elapsed).
Result display of disruptions
Numerical display
Total Number of disruptions, begin timestamp of first
Disruption, end timestamp of last disruption,
Shortest disruption time (with timestamp)
Longest disruption time (with timestamp)
Average disruption time
The threshold to identify a violation of allowed service
Disruption time can be set in the range of 0 ms to 100000 ms
Tabular display
Service disruption events with start/stop times and duration.
Three logging modes available (no logging; disruption events
only; disruption and causing sensor events)
Transfer delay analysis