Audio Precision AP 517, Installation Instructions Manual

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Characteristic Specifications Supplemental Information
APx517 B Series Acoustic Analyzer: Specifications 39
Headphone Amplifier
Number of Channels
2, independent amplitude control
Waveforms
Sine, split frequency sine, split phase
sine, sine+DC offset, continuously
swept-sine, noise, IMD test signals,
multi-tone, wave file playback
Maximum Output Ratings
Rload ≥ 800 Ω 9.0 Vrms
Rload = 2 Ω to 800 Ω 100 mW, 20 Hz to 20 kHz Power output thermally limited, no maxi-
mum load power enforced.
Output Impedance
500 m Ω Max ≈ 275 m Ω , typical
Sine Characteristics
Frequency Range (Fs) 2 Hz to 80.1 kHz Setting resolution is typically 45 μ Hz
Frequency Accuracy ±(0.0003% + 100 μ Hz)
Amplitude Range 0 to 9.000 Vrms [25.456 Vpp] 800 Ω load
Amplitude Accuracy, 1 kHz ±0.05 dB [±0.58%]
Flatness (1 kHz ref)
10 Hz to 20 kHz ±0.08 dB Typically <0.02 dB
20 kHz to 50 kHz ±0.15 dB
50 kHz to 80 kHz ±0.40 dB
Residual THD+N {notes 1,2}
2 Ω load Fs = 20 Hz-20 kHz ≤ (-84 dB + 15 μ V), 20 Hz to 20 kHz
800 Ω load Fs = 20 Hz-20
kHz
≤ (-90 dB + 15 μ V), 20 Hz to 20 kHz
Non-Harmonic Content Typically < -125 dB, 20 Hz to 20 kHz