EXFO MaxTester 635G User Manual page 199

Select Masks
The Select Masks tab allows you to set parameters
and choose which Masks to enable for the PSD test.
Select Files is either None which removes all

check marks allowing you to select one or more
Masks, or All.
DPBO (Downstream Power Back Off) is either ON

or OFF.
ESEL (Exchange Side Electrical Length) is used to

enter or modify the numerical values of
attenuation of the cable at 1 MHz frequency from
0 to 120 dB with one decimal point. This
represents the DPBOESEL variable or electrical length of exchange to
cabinet cable, and is applied to the DPBO mask calculation.
Note: DPBO and ESEL are only available if Termination is set to Bridging or
Hi-Z Cable.
Masks lists all the networks available to select dependent on the ITU or

ANSI Standard mode set in Setup/Application Settings/Standard.
To set parameters and enable the Masks for the PSD test:
1. Press the up/down arrow keys to highlight the desired parameter.
2. Press the left/right arrow keys to view and select the options.
OR
3. Press
editor screen and use the navigation keys to scroll through.
4. Press
5. If None is selected for the files, press the down arrow key to highlight
the list box of Masks and press
Copper and G.fast/VDSL2/ADSL2+ Multi-play Test Set
on a value to open a list box of options or the alphanumeric
to confirm the value.
to open the list.
Noise Tests
WB PSD Noise
189