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IPTV Analysis

VDSL2, ADSL2+, and IP Triple-Play Test Set 61

Reading Results

VDSL Bands

The VDSL Bands tab allows you to view the VDSL parameters negotiated

by the unit and central office, configured in the connection setup.

The available test results are the

following:

³ SNR Margin is the measured

current signal-to-noise ratio (SNR)

margin across all active

sub-channels, as an amount of

increased noise relative to the

measured noise power that the

system would be able to tolerate

to maintain a bit error rate of 10-7.

³ LoopAttn is the current reduction of the line.

³ SignalAttn is the current reduction of the signal.

³ Tx/RxPower records the number of transfer mode cells/frames

transmitted or received.

³ DS0-4 button displays the downstream parameters for different VDSL

bands 0 to 4.

³ US0-4 button displays the upstream parameters for different VDSL

bands 0 to 4.

1 2 ... 62 63 64 65 66 67 68 69 70 71 72 ... 123 124

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Exfo VDSL2 Manual do Utilizador Página 67