EXFO VDSL2 - Manual (Page 132)

Wideband Tests
124 AXS-200/635
Data Rate Prediction
Summary
The Summary tab allows you to view results, change some of the variables
and Recalculate the results.
Each parameter on the pane is
described below.
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Annex defines the modes of
available ADSL Annexes from the
ITU standards.
³
A is ADSL service functioning
over POTS.
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B activates the ADSL
functionality over ISDN.
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L Mask 1 assumes an increase in ADSL2 range/distance.
³
L Mask 2 also extends the signal reach but can show an
improvement in the upstream data rate.
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M allows increased upload speeds from 1 Mbps to 3.5 Mbps.
Available only for ADSL2 and ADSL2+.
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Technology lists the following values: ADSL, ADSL2, or ADSL2+. If
Annex L is previously selected, ADSL2 is automatically set. If Annex M,
ADSL is not available.
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Reference Point is either CO or CPE, allowing you to select from
which end of the circuit you are running the DRP test. CO is located at
the CO/Exchange side and you are testing towards the subscriber. CPE
is the subscriber side and you are testing towards the CO/Exchange.
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Target SNR is the desired signal-to-noise ratio ranging from 0 to 31 dB.
Default value is 6 dB.
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Recalculate button allows you to change the setup and re-evaluate the
rates.