... analog anti-alias filter and 160dB/Octave digital filter for each channel Voltage range:±10 ... manual arming, Pre/Post-trigger delay, Auto noise reductionSource level, input range and frequency resolution. Up ... orders/Y-axis: Engineering unit, linear, logarithmic, dB/Z-axis: RPM, second X, Z, order ... B, C selectable Sound level types Peak hold, impulse, RMS, fast and slow sound level measurements Slow and ...