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DMT Carrier Usage ADSL Only (Signal Analysis)
This displays the bits per tone as a graph. The results can be
used when you are testing for degradation across the
available bandwidth on the line.
To select Tones:
-1- From the Select ADSL Tests choose Carrier Usage.
-2- Press F4 Setup and press ENTER to displayed the
-3- Choose All Tones, Upstream Tones or
-4- Press ENTER to accept the entry.
To start a Signal Analysis:
-1- From the Modem Tests screen select DSL Layer and
-2- Press F1 View. A screen similar to the following is
-3- Press ESC to return to the Select ADSL Tests screen.
Issue 7 - 05/02
options.
Downstream Tones.
choose Carrier Usage.
displayed.
This screen is displaying a typical trace.
Section 4 - DSL Layer Tests
4-39
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