ADSL2 Sub-Carriers Status Lin Img

1.3.6.1.2.1.10.238.1.2.2.1.9

An array of up to 512 complex H(f) linear representation values in linear scale for the respective transmission direction. It is designed to support up to 512 (downstream) sub-carriers. The number of utilized values on downstream direction depends on NSCds, and on upstream direction it depends on NSCus. This value is referred to here as NSC. Each array entry represents the imaginary component [referred to here as b(i)] of Hlin(f = i*Df) value for a particular sub- carrier index i (0 <= i < NSC). Hlin(f) is represented as ((scale/2^15)*((a(i)+j*b(i))/2^15)), where scale is Adsl2SubcarrierLinScale and a(i) [provided by the Adsl2SubcarrierLinReal object] and b(i) are in the range (-2^15+1) to (+2^15-1). A special value a(i)=b(i)= -2^15 indicates that no measurement could be done for the subcarrier because it is out of the passband or that the attenuation is out of range to be represented. This parameter is only available after a loop diagnostic procedure. Each value in this array is 16 bits wide and is stored in big endian format.