Exfo MaxTester DSL User Manual download pdf (Page 39)

MaxTester DSL 33

Band Info

The Band Info tab allows you to view a list of individual upstream or downstream

band parameter details.

³ Band contains Upstream (US) and Downstream (DS)

parameters.

³ ADSL lists only 1 of each.

³ VDSL lists US0 to 3 and DS1 to 3 possible bands,

depending on the band plan,

³ Parameter - Downstream/Upstream

³ SNR Margin is the measured current

signal-to-noise ratio margin across all active

sub-carriers, as an amount of increased noise

relative to the measured noise power that the

system would be able to tolerate. Only a value of 6

or above is able to support a bit error rate of 10

-7

³ Loop Attenuation is the current reduction of the

line and is measured only once during training.

³ Signal Attenuation is the current reduction of the signal and is measured

periodically when the line is connected.

³ Tx Power is the upstream/downstream transmitting power for the

selected band.

³ Output Power is the current transmit power level that is a measure of the

aggregated transmit power.

Data Tests Summary

The Data Tests Summary tab displays the pass/fail status

of the selected data tests enabled in the connection setup.

A successful WAN connection must be established in

order to view the detailed results.

To view individual data test results:

1. Press the up/down navigation keys to select the

desired test.

2. Press to display the test result details.

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Exfo MaxTester DSL User Manual Page 39