Tektronix, Inc. Distortion Analyzer AA501

The AA501 is a 100 kHz distortion analyzer from Tektronix. People use distortion analyzers for the measurement of alternating current (AC) voltages and distortion. Audio distortion analyzers test equipment for their total harmonic content of sinewaves, expressing the measurement as total harmonic distortion (THD). Additional Features: Audio Analyzer plug-in for the TM500 System Frequency range: 10 Hz to 100 kHz Harmonics measurements to 300 kHz 2 slots wide The Tektronix AA501 provides automated measurement of THD+N and levels (RMS responding) in the range of 10 Hz to 100 kHz. Harmonics are measured up to 300 kHz. It has four built-in weighting filters and allows the user to loop an external filter in. Option 01 adds intermodulation measurement. Input impedance is 100 kω and unlike other analyzers with usually 1 Mω or near-infinite input impedance. Internal THD in the audio band is specified as typically <-95 dB (0.0018 %). Residual THD+N is specified as <-90 dB (<0.0032 %).