APx52xB Series Audio Analyzer

Key Features

Channels: 2, 4
Bw: >90 kHz, >1 MHz
Residual Thd N: -108 dB typ.

Model APx525B - 2-channel APx526B - 4-channel

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APx52xB Series Audio Analyzer

The Audio Precision APx52xB Series offers the ideal balance of analog performance and breadth of digital I/O, designed for R&D engineers and production technicians who want fast and easy audio testing.

APx525B has two balanced and two unbalanced analog inputs and outputs plus digital inputs and outputs via AES/EBU, TOSLINK and S/PDIF. APx526B is the four-channel version of the APx525B, developed for the four-channel head units typical of the automotive audio industry. I/O may be expanded with optional Digital Serial (APx525B and APx526B), HDMI + ARC (APx525B), PDM (APx525B and APx526B) and Bluetooth (APx525B and APx526B) modules. The optional Advanced Master Clock (AMC) module synchronizes the analyzer with external equipment and enables jitter generation and analysis.

Key Features

APx525B: 2-channel; APx526B: 4-channel analog I/O
Residual THD+N typically < −108 dB (1 kHz, 2.5 V); < −110 dB with AG52 option
Bandwidth > 90 kHz; > 1 MHz with BW52 option
FFTs up to 1248K points
AES/EBU, TOSLINK and S/PDIF digital I/O
Optional modules: Bluetooth, PDM, Digital Serial, HDMI + ARC (APx525B), Advanced Master Clock

Key Specifications

Sine frequency range	0.1 Hz to 80.1 kHz
Frequency accuracy	3 ppm
IMD test signals	SMPTE, MOD, DFD
Maximum amplitude (balanced)	21.21 Vrms
Amplitude accuracy	±0.03 dB
Flatness (20 Hz–20 kHz)	±0.008 dB
Residual THD+N (20 kHz BW)	−105 dB + 1.4 µV; typically < −108 dB (1 kHz, 2.5 V); typically < −110 dB with AG52
Digital output sampling rate	27 kS/s to 200 kS/s (27 kS/s to 108 kS/s optical)
Dolby / DTS generator	Yes (encoded file)
Maximum rated input voltage	230 Vpk
Maximum bandwidth	> 90 kHz; > 1 MHz with BW52
Residual input noise (20 kHz BW)	1.3 µV
Individual harmonic analyzer	d2–d10
Max FFT length	1248K points
DC voltage measurement	Yes