Events: BERT
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Event Structure |
What is a BERT event ?... |
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BERT decoding |
by using Clarinet Event-Editor with a
filter ... |
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Protocol stack |
Which protocol specifications to be
defined in the current filter ?... |
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Standards |
- ITU G821 recommendation
- FT/CNET/LAB/208 application note, 3rd edition
(transmission of data of the Pseudo Random Sequences type (PRS) and
their control)
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Options |
Changing the display conditions in the
current filter ?... |
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Clarinet Event-Editor: BERT decoding
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Event information |
Date |
Date of the event (end of BOP frame) in
the format: hh:mm:ss/xxx.y |
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| N |
The interface number which identifies the
Clarinet-interface connected to the host. |
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Event types |
Measure_info |
Relating to the control of the BERT
measure. |
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| Real_time |
Relating to real time events. |
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| Available_time |
Relating to periodic results of the BERT
measure during the available time. |
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| Measure_result |
Relating to the results of the BERT
measure. |
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BERT syntax |
| Word |
Item type |
Designation |
| BE |
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Bit Error |
| BE-num |
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Number of Bit Errors within a block. |
| BE-numb |
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Number of Bit Errors within an errored
second. |
| BER |
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Bit Error Rate |
| BL |
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Block (511, 2047 Bits) |
| BL-count |
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BLock number |
| BLE |
event |
BLock Error |
| BLE-count |
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Number of BLock Errors |
| BLER |
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BLock Error Rate |
| ERR-SEC |
event |
Errored Second |
| ERF-SEC |
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Error Free Second |
| SEV-SEC |
event |
Severely Errored Second (BER > 10-3) |
| DEG-SEC |
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Degraded Second (10-3 > BER > 10-6) |
| DEG-MIN |
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Degraded Minute |
| DM |
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Degraded Minute |
| UNAV |
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Unavailability |
| FLT-IND |
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Fault Indication |
| AV-BER |
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Average BER (on the error bits) |
| AO-BER |
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Average Overall BER |
| AR-BER |
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Average Residual BER |
| EPM |
event |
Elementary Period Measurement |
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- decoding of FLT-IND event in the following format:
Beginning of Fault Indication
End of Fault Indication
The field significance is as follows:
- BLE: error on block (511, 2047...bits).
- BE-num= xxxxxx: value of number of errored bits in the block.
- BL-count= xxxxxx: value of received block counter (since measurement
beginning).
- BLE-count= xxxxxx: value of errored received block counter (since
measurement beginning).
The representation of an EPM event is supplied by a line including the
degraded minute indication (DM:X, X being YES/NO) and the error rate during the
EPM.
In order for the information contained in the intermediate reports to be
valid, there is a delay of 9 seconds between the end of period date to which the
report refers and the date when the report is generated. The date displayed is
the report generation date.
The representation of a BERT final result event is supplied by a table with 7
lines and 3 columns.
The first line includes the measurement time value and the unavailability time
value.
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