APx516B Audio Analyzer

Key Features

Channels: 2
Bw: >90 kHz
Residual Thd N: -109 dB typ.

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APx516B Audio Analyzer

The Audio Precision APx516B Series Audio Analyzer offers a cost-effective modular solution for analog and digital audio testing, upholding the Audio Precision standard of performance and service. Designed for extended R&D teams and production test applications, it delivers comprehensive testing in a versatile, affordable package.

The APx516B is a two-channel audio analyzer with an optional module slot that is compatible with current and future APx500 digital audio interface modules: Bluetooth, PDM 16, PDM, Programmable Serial I/O, HDMI and AES/S/PDIF.

Key Features

2 analog signal generator channels and 2 analog signal analyzer channels
Residual THD+N typically < −109 dB (1 kHz, 2.5 V)
Optional module slot: Bluetooth, PDM 16, PDM, Programmable Serial I/O, HDMI2 + eARC, AES/S/PDIF
Base measurements: Level and Gain, THD+N, Stepped Frequency Sweep, Loudspeaker Production Test, Pass/Fail, Signal Acquisition
Expandable with APx500 Flex Packs 2/3/4 or software subscription

Key Specifications

Analog channels	2 generator, 2 analyzer
Sine frequency range	2.0 Hz to 80.1 kHz
Frequency accuracy	3 ppm
IMD test signals	SMPTE, MOD, DFD
Maximum amplitude (balanced)	14.40 Vrms
Amplitude accuracy	±0.05 dB
Generator flatness (10 Hz–20 kHz)	±0.008 dB
Analog output configurations	Unbalanced, balanced, common mode
Maximum rated input voltage	125 Vpk
Maximum bandwidth	> 90 kHz
Analyzer flatness (10 Hz–20 kHz)	±0.010 dB
Residual input noise (20 kHz BW)	2.0 µVrms
Residual THD+N (20 kHz BW)	−100 dB + 2.0 µV; typically < −109 dB (1 kHz, 2.5 V)
DC voltage measurement	Yes