Owner's manual

Running DSL/IP Tests and Viewing Results

88 MAX-630

Band Information

The Band Information tab allows you to view a list of individual upstream

or downstream band parameter details.

When the Test Inter face for Auto or Manual Test is set to ADSL2+ or

VDSL2 bonding mode, there will be 2 pages of results, one for each DSL

line-pair.

To access the second-pair results, press the Pair 1/2 function key at the

bottom-right of the screen.

 The page contains Upstream and Downstream

parameters. Press to toggle between bands.

 ADSL lists only 1 of each.

 VDSL lists US0 to 3 and DS1 to 3 possible

bands, depending on the band plan.

 Parameter - Downstream/Upstream

 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

 Loop Attenuation is the current quality of the line and is measured

only once during testing.

 Signal Attenuation is the current reduction of signal strength and

is measured periodically when the line is connected.

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

selected band.