All, Let's remember to add some words to the affect that both of these are passed in units of seconds. Walter | 3.1.2.4 sample_interval | | This is the sampling interval of the impulse_matrix. Sample_interval is | usually a fraction of the highest data rate (lowest bit_time) of the | device. Example: | | Sample_interval = (lowest_bit_time/64) | | 3.1.2.5 bit_time | | The bit time or unit interval (UI) of the current data, e.g., 100 ps, 200 | ps etc. The shared library may use this information along with the | impulse_matrix to initialize the filter coefficients.