ZyXEL VES1724-56 User Guide - Page 114
VDSL Line Profile Setup > DPBO
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Chapter 9 VDSL Setup Table 31 VDSL MIB PSD Mask Setup (continued) LABEL DESCRIPTION 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 Cancel Click this to save the settings to the Switch and return to the previous screen. Click Cancel to reset the fields to your previous configuration. Clear Click Clear to clear the fields to the factory defaults. 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 101. Figure 54 VDSL DPBO Setup 114 VES1724-56 User's Guide
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