Distortion Analyzer, Programmable,10 Hz to 140 KHz, Auto-Tune, Measures THD, Sinad, Frequency, Level, Ratio, 3 mV Sensitivty, AC Level 0 to 300 V ( 6 F.S. Ranges ), DC Level 0 to 300 V ( 3 F.S. Ranges ), Selectable RMS or Average Detection Modes, 3 Low-Pa Availability: Usually ships the next business day. 55095