ZyXEL VES1724-56B2 User Guide - Page 116

Chapter 9 VDSL Setup Table 39 VDSL Virtual Noise Setup (continued) LABEL DESCRIPTION Tone Index A tone is a sub-channel of 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. Noise level (dBm/ Enter the noise level for the specified tone(s) where you expect noise may occur. This Hz) setting is then reflected in the Y-axis of the virtual noise 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. 9.3.7 VDSL Channel Profile Setup Click the ChanProfile link at the top-right corner of the VDSL Template Setup screen to open the screen shown below. Use this screen to view, add, modify and delete VDSL channel profiles. Figure 61 VDSL Channel Profile Setup The following table describes the labels in this screen. Table 40 VDSL Channel Profile Setup LABEL Name DownStream Upstream DESCRIPTION Enter a descriptive name for identification purposes. The parameters in this column relate to downstream transmissions. The parameters in this column relate to upstream transmissions. 116 VES1724-56 User's Guide