EXFO VDSL2 - Manual (Page 147)

Wideband Tests
Copper, VDSL2, ADSL2+ and IP Triple-Play Test Set 139
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.
³
Annex defines the modes of
available ADSL Annexes from the
ITU standards.
³
A is ADSL service functioning
over POTS.
³
B activates the ADSL
functionality over ISDN.
³
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.
³
M allows increased upload speeds from 1 Mbps to 3.5 Mbps.
Available only for ADSL2 and ADSL2+.
³
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.
³
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.
³
Target SNR is the desired signal-to-noise ratio ranging from 0 to 31 dB.
Default value is 6 dB.
³
Recalculate button allows you to change the setup and re-evaluate
the rates.