SCAN function can preform a scan for Load Coils, a scan for balance testing at high frequencies, or plot energy levels at various frequencies to determine presence of DSL signals. |
Load Coil scan determines if the pair is loaded, and indicates the number of loads. Once a load has been identified the TDR can be used to locate the first load. Note: The D105 requires at least 500FT of cable before the first load, and after the last load to accurately determine load count. |
The extended balance scan measures pair imbalance beyond the typical audio frequencies. This is useful in identifying impairments caused by series splice resistances and imbalance due to partial bridge taps. |
The D105 divides the scan frequency spectrum into 3 segments to obtain a high resolution for DMT bin display. |
The screen shot shows a T1 circuit transmitting all 1's. The cursor indicates the center frequency of the signal. This function can also be used to determine if high frequency noise exists on a vacant pair before attempting to provision for DSL. |
