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“A standout feature of the APx516B is its capability to bridge analog and digital audio testing,” according to the company. The “digital interface module slot is compatible with all current and future Audio Precision digital audio I/O modules, including support for Bluetooth, HDMI2, I2S/TDM, PDM, S/PDIF, Toslink and AES3″.
Claimed system performance is -100dB + 2.0µV residual THD+N (20kHz bandwidth), and typically <-109dB (1kHz, 2.5V).
The analogue audio generator operates over 2Hz to 80.1kHz with 3ppm accuracy, and up to 14.4Vrms ±0.05dB (balanced), flat to ±0.008dB over 10Hz – 20kHz. Various IMD test signals can be added, as can Dolby/DTS. Unbalanced outputs are also possible.
The analyser can cope with up to 125Vpeak up to over 90kHz and measure to ±0.05dB amplitude accuracy (1kHz) with ±0.010dB flatness over 10Hz – 20kHz. Residual input noise is 2.0µVrms (20kHz bandwidth). Various IMD measurements are possible, as is dc measurement.
Running on a host PC, the company’s APx500 measurement software provides a library of measurements for the analyser.
APx516B carries a three-year warranty (five-year option), A2LA-accredited calibration, ISO 17025 accredited calibration and technical assistance.
As well as for bench test and product verification, the company sees this tester being built into production lines.
Find the APx516B product page here
The photo shows the AES/SPDIF digital plug-in installed (right hand side). “The B Series APx DIO option provides AES3, AES/EBU balanced digital I/O on XLR, unbalanced SPDIF digital I/O on BNC, and TOSLINK optical,” explained Audio Precision.
