Chapter 9 VDSL Setup
VES1724-56 User’s Guide
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9.3.4 VDSL Line Profile Setup > DPBO
Click the Modify link next to the DPBO field in the VDSL Line Profile Setup screen to open the
screen as shown next. Use this screen to configure Downstream Power Back-Off (DPBO) settings.
See DPBO on page 99.
Figure 58 VDSL DPBO Setup
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 levels (-127.5~0 dBm/Hz) for your specified tones to restrict the transmit
PSD to levels below these. Your input value will be displayed as the Y-axis of the MIB
PSD Mask graph after you click Preview.
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.
Table 36 VDSL MIB PSD Mask Setup (continued)
LABEL DESCRIPTION
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