ZyXEL Communications VES1724-56 - VDSL Line Profile Setup > RFI Band

Chapter 9 VDSL Setup
VES1724-56 User’s Guide
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The following table describes the labels in this screen.
9.3.5 VDSL Line Profile Setup > RFI Band
Click the Modify link next to the RFI BAND field in the VDSL Line Profile Setup screen to open
the screen as shown next. Use this screen to specify the RFI bands through which the Switch and
Table 37 VDSL DPBO Setup
LABEL DESCRIPTION
DPBOESEL Specify the electrical length of the cable between the Switch and CPE devices. See
UPBO/DPBO Electrical Length on page 100.
DPBOESCMA,
DPBOESCMB,
DPBOESCMC
These parameters define a cable model that is used to describe the frequency
dependent loss of exchange-side cables.
DPBOMUS This defines the assumed minimum usable receives PSD mask (in dBm/Hz) for
exchange based services, used to modify parameter DPBOFMAX defined below. Enter
from 0 to -127.5 dBm/Hz in steps of 0.5 dB.
DPBOFMIN This defines the minimum frequency from which the DPBO shall be applied. Enter from 0
kHz to 8832 kHz in steps of 4.3125 kHz.
DPBOFMAX This defines the maximum frequency at which DPBO may be applied. Enter from 138
kHz to 29997.75 kHz in steps of 4.3125 kHz.
DPBOEPSD DPBOEPSD (Assumed Exchange PSD Mask) defines the PSD mask that is assumed to be
exchanged at CO. Use this graph to view PSD level to frequency relationship. The
horizontal is frequency in MHz and vertical is power level in dBm/Hz.
Click Custom to have the breakpoints and PSD levels configured in the bottom of the
screen updated to this DPBOEPSD graph.
Alternatively, you can click one of the others (CAB_ANSI, EX_ANSI, CO_PSD,
CAB_ETSI, EX_ETSI, Flat_PSD) to use a pre-defined PSD mask.
DPBOESEL Specify the electrical length of the cable between the Switch and CPE. See UPBO/DPBO
Electrical Length on page 100.
Break Point This index number identifies each incremental break point.
Tone Index A tone is a sub-channel of a VDSL band. DMT divides VDSL bands into many 4.3125 kHz
tones.
Enter an increased number (than previous row) from 0 to 4096 in this field that is also
the horizontal of the DPBOEPSD graph.
Frequency (kHz) This read-only field displays a frequency that equals the tone index multiple 4.3125
dBm/Hz. This field automatically calculates after a Tone Index value is entered.
PSD level (dBm/Hz) Enter the PSD level for the Y-axis of DPBOEPSD graph.
Modify Click this to save the settings to the Switch and return to the previous screen.
Cancel Click Cancel to reset the fields to your previous configuration.
Clear Click Clear to clear the fields to the factory defaults.