Characteristic Specifications Supplemental Information
36 APx555 B Series Audio Analyzer: Analog I/O Specifications
555
Mix Ratio 4:1 based on Vpp Ratio accuracy typically <1.5%
Amplitude Range
1
0 to 75.4 Vpp, bal;
0 to 37.7 Vpp, unbal
Amplitude Accuracy ±0.09 dB [±1.0%]
Residual IMD
2,3,6
–95 dB [0.0018%] DIM-100 or DIM-30
Square Wave
Generation Technique Special circuit, optimized for time
domain response and symmetry.
Frequency Range (Fq) 0.1 Hz to 30 kHz
Frequency Accuracy
5
±0.0003% [3 ppm]
Amplitude Range 0 to 60.0 Vpp, balanced;
0 to 30.0 Vpp, unbalanced
Amplitude Accuracy ±0.09 dB [±1.0%]
Risetime 1.7 sec Rs 200 (not valid if Rs = 600 );
total load C must be 800 pF
Aberrations Typically <1%
Even Harmonic Content
Fq = 10 Hz to 5 kHz (–100 dB + 0.2 µV) to 80 kHz
Fq = 5 kHz to 20 kHz (–90 dB + 0.2 µV) to 500 kHz
Spurious Content Typically <(–110 dB + 0.2 µV)
Noise Signals
Generation Technique DAC based, pseudo-random with IIR
filtering and additional processing.
Types White (5 Hz to 80 kHz),
Pink (10 Hz to 80 kHz),
IEC 60268-1, or BS EN 50332-1
Amplitude Range
1
0 to 60.0 Vpp, balanced;
0 to 30.0 Vpp, unbalanced
Calibration is approximate only
Multitone, Wave File Playback
Sample Rate Range (SR) 8 kS/s to 108 kS/s, and
175 kS/s to 216 kS/s
Operation from 109 kS/s to 174 kS/s is
possible, but with degraded flatness
Maximum File Size 32 MSamples
Amplitude Range
1
0 to 60.0 Vpp, bal;
0 to 30.0 Vpp, unbal
“.Wav” file must peak at digital full scale
for calibrated amplitude.
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