APx511

Hearing Instrument Audio Analyzer

Ideal for production test and entry-level R&D applications

The APx511 audio analyzer is designed specifically for the needs of hearing instrument manufacturers, providing the specific measurements and I/O required for hearing instrument production test, delivered with Audio Precision’s reputation for high performance and reliability.

APx511 supports a .NET library of functions that automate the tests described in IEC60118- 7 and ANSI S3.22. For the production environment, these functions can be called from any .NET capable language or LabVIEW to control the APx511’s output and measurement settings.

APx511 Statement of Use

The Audio Precision APx511 is not intended to be used as a Medical Device. It is not intended to be used for diagnostic or therapeutic purposes and is not intended to be used in or on the human body. It is not intended to be used by audiologists or for any patient specific use. Intended Use: The APx511 is intended to be used as the signal source and signal analysis portion of a test system which measures the electrical and acoustical response of a hearing aid device (while the device is enclosed in a test chamber during the production process).

The Audio Precision APx511 is intended to be used solely by hearing aid manufacturers for the purposes of (1) conducting product research and development, (2) verifying product performance during production for quality control purposes, and (3) verifying performance for hearing aids returned for evaluation or service.

Features

Automated Routines for IEC60118-7 and ANSI S3.22

APx511 supports a .NET library of functions that automate the tests described in IEC60118- 7 and ANSI S3.22. For the production environment, these functions can be called from any .NET capable language or LabVIEW to control the APx511’s output and measurement settings.

For troubleshooting or test setup, the APx511 can be controlled by the standard APx500 software providing a rich graphical user interface and access to automated reporting, real-time signal monitors, high resolution FFTs and controls for limits & other settings.

In addition to standard audio tests such as level, distortion, frequency response, and attack & release, APx511 can measure battery current using its built-in battery simulator circuit.

Built-in Support for Test Chamber Speaker, Telecoil & Microphone

The APx511 generator includes an in-line 2 watt loudspeaker amplifier (8 ohms) and a telecoil amplifier, allowing >110 dB SPL and up to 400 mA/m field strength from 100 Hz to 10 kHz in a test chamber such as the Interacoustics TBS25. On the input side, APx511 supplies 24 V DC of constant current through a single BNC for a pre-polarized measurement microphone.

Code-Free Automation & Complete API

APx500 Measurement Software is the most advanced audio measurement interface available. Complex procedures that include user prompts, limits, and calls to external applications can be created directly in the GUI, saving time and money while ensuring painless updates over time, as no development is required.

Create custom interfaces and application-to-application automation using the comprehensive APx API for integration in VB.NET, C#.NET, MATLAB, and LabVIEW development environments. Projects and automation can be shared with other APx units anywhere in the world.

Common Software Platform

From a practical perspective, all APx audio analyzers use the same software, making tests and results easier to share. All settings for a test are saved in a single project file, making it easy to replicate test setups between R&D and production facilities anywhere in the world. Project files are compatible with all APx instruments and each project is self-contained, so there’s never any worry about dependencies or broken links. Users can even embed waveform files and images within a project file.

For customers, contract manufacturers or management, APx automatically generates rich graphic reports, with highlighted pass / fail limits and options to export as PDF, HTML, Excel, CSV, RTF or MATLAB files.

All audio & power connections are located on the back of the instrument in line with production test standard practices. The microphone input is a standard BNC connector. The outputs connect via a standard DB-15 connector to reduce cabling errors in the production environment. A DB-15 break-out cable terminating in the required connectors for specific test chambers is provided with each APx511.