... 160dB/Octave digital filter for each channel to eliminate non-linear phase distortion and image Resolution 24-bit DA converter ... , Flattop, Uniform, Bartlett, Tukey, Blackman, Blackman Maximum, BlackmanMinimum, Welch Linear, exponential, peak hold, peak hold for N frame on both ... 0 to 99% X-axis: Hz or linear, logarithmic, orders/Y-axis: Engineering unit, linear, logarithmic, dB/Z-axis: RPM, second ...