HP 331A Distortion Analyzer. This unit measures total
distortion levels of 0.1%-100% full scale in 7 ranges at any frequency between
5 Hz to 600 kHz harmonics are indicated up to 3 MHz.It also doubles as a highly accurate AC
Voltmeter with voltage and dB scales.
SPECIFICATIONS: Freq Range: 5 Hz to 600 Khz
Distortion Range: 0.1 % to 100% Full Scale Residual Distortion: less than -70 dB
(0.03%) Accuracy: +/-3% over 10 Hz to 1 MHz with fundamental input
less than 30V to 0.3% THD Fundamental Rejection: Greater than 80 dB
Input Impedance: 1Mohm +/-5% shunted by <70pF Voltmeter
Range: 30uV to 300V rms full scale (13 ranges) 10 dB per range. Dimensions: 16
3/4" x 5" x 13 1/4"