User's Manual

Screen Service SDT 200UB – SDT 500UB ARK-1 ATSC Operations
July, 2009 v 1.0 Page 3 - 66
3.8.1 Management panel
Table 13. Filter window: management panel
Parameter /
Control
Description Admitted Ranges / Values I/A
Read To read and loads the filter coefficients from the respective FPGA registers.. I/A
Init To load flat curves coefficients. I/A
Auto To move the filter at the center of the band I/A
Export To export the file with the actual adaptive filter coefficients. I/A
Save To save the actual adaptive filter coefficients I/A
Ext Delay
To monitor the external Delay value (indicated in unit x sampling time). The external delay is the delay
between the compensated signal at the filter output and the correlated feedback signal at filter input.
I/A
Update Coeff
To enable the filter coefficients real time update. Checked: enabled
Not checked: disabled
I/A
Update Coeff /
Speed
To set the speed of the filter coefficients update. Min: 0
Max: 7
I/A
Power Control
To enable the power control coefficient update. The power control block multiples the input signal for a
calculated coefficient to guarantee the same average power level in reception and in transmission of
the filter..
Checked: enabled
Not checked: disabled
I/A
Power Control
/ Speed
To set the speed of the power control coefficient update. Min: 0
Max: 7
I/A
Ref Level
Power Rx
To monitor the power control coefficient value applied for the reception.
I/A