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APx511B Hearing Aid Audio Analyzer
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APx511B Hearing Aid Audio Analyzer
The Audio Precision APx511B Series 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.
APx511B supports a .NET library of functions that automate the tests described in IEC 60118-7 and ANSI S3.22. For the production environment, these functions can be called from any .NET-capable language or LabVIEW to control the analyzer's output and measurement settings.
Key Features
- Loudspeaker output, telecoil output, battery simulator and CCP microphone input in one unit
- Automated IEC 60118-7 and ANSI S3.22 routines (.NET library)
- Microphone input with constant current power for a pre-polarized measurement microphone
Key Specifications
| Loudspeaker output | 4 W RMS into 8 Ω (100 Hz–10 kHz BW); THD+N −80 dB @ 2 W / 8 Ω; ±0.1 dB (100 Hz–10 kHz) |
| Telecoil output | 100 mA RMS up to 20 Ω; THD −80 dB @ 100 mA into 1 Ω; ±0.1 dB (100 Hz–10 kHz) |
| Battery simulator | 0 to 2 V DC, 0.5 mV resolution, ±(1% + 10 mV); 30 mA max; output impedance 4.3 Ω |
| Battery current measurement | 0 to 30 mA, 10 µA resolution, ±5% |
| Microphone input | BNC with 24 V DC constant current power (CCP can be disabled) |
| Microphone input maximum | 8.5 Vrms (151 dBSPL at 12.5 mV/Pa) |
| Microphone input residual noise (20 kHz BW) | < 1.3 µV (20 dBSPL at 12.5 mV/Pa) |
| Microphone input frequency response | ±0.03 dB (100 Hz–20 kHz) |
| Amplitude / frequency accuracy | ±0.03 dB / 3 ppm |
Datasheet available on request.
