Excluded/Unused/Guard Band Config (DOCSIS 4.0 Upstream)

Excluded/Unused/Guard Band Config contains a group of parameters to automatically or manually specify the start and length (in subcarriers) of any bands of inactive subcarriers including upper and lower guard bands and any exclusion bands.

Parameter	Description
Auto Detect	When selected, inactive subcarriers are automatically detected based on the relative power threshold specified in the Use Sub. Det. Threshold setting. Default: enabled
Auto Detect Enabled
	Sub. Det. Threshold specifies the power threshold for automatic detection of inactive subcarriers. In auto-detect mode, a subcarrier with power below the Sub. Det. Threshold is considered “inactive” and a subcarrier with power above this is considered “active.” Default: -20dB In auto-detect mode, the software has no way to determine if a subcarrier with no power is “unused” or “guard band” – it’s just a subcarrier with no power. The software will consider all subcarriers at a frequency below the first (lowest frequency) detected active subcarrier as “guard band” subcarriers. Similarly, all subcarriers at a frequency above the last (highest frequency) active subcarrier will be considered “guard band” subcarriers. Any inactive subcarriers between the first and last active subcarriers will be considered exclusion band subcarriers. You can disable Auto Detect to manually enter guard and exclusion bands if you wish to differentiate these at a finer granularity. Minislot 0 will start with the first active subcarrier detected.
Auto Detect Disabled
	Subcar Start sets the starting subcarrier for the selected exclusion band. Default: Exc0 = 0, Exc1 = 1974
	Subcar Length sets the length of the subcarrier for the selected exclusion band. Default: Exc0 = 74, Exc1 = 74
	Edit Opens the Docsis Upstream Exclude Editor. Use this editor to create a custom list of exclusion bands. Add Adds an exclusion band to the manually created list of exclusion bands. Delete Deletes the selected exclusion band from the list of exclusion bands. Apply Applies the manually created list of exclusion bands to the current DOCSIS 4.0 Upstream demodulation.