Exfo VDSL2 Uživatelský manuál Strana 66

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IPTV Analysis
60 AXS-200/630
Reading Results
Statistics
The Statistics tab allows you to view transfer mode statistics and xDSL
counters.
The available test results are:
³ TransportType options include
packet transfer mode (PTM) and
asynchronous transfer mode
(ATM).
³ SyncLostCount is the number of
times the unit lost synchronization.
³ Received Bytes is the number of
active (non-idle) PTM/ATM cells or frames received on a channel.
³ Transmit Bytes records the number of active (non-idle) PTM/ATM cells
or frames transmitted on a channel.
³ PTMCRC is the number of cyclical redundancy check (CRC) errors of
the PTM.
³ PTMCV is the number of constant velocity (CV) errors of the PTM.
³ VDSL Counters lists the Local and Remote results for the following
counters:
³ CRC is the cyclical redundancy check (CRC) Interleaved/Fast
counter.
³ HEC is the header error check (HEC) Interleaved/Fast counter.
³ FEC is the Reed Solomon forward error check (FEC)
Interleaved/Fast counter.
³ FEC Seconds is the number of seconds when FEC is detected.
³ Error Seconds is the number of seconds when code violation is
detected.
³ Reset Counters button sets all counters to 0.
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