AIO-SA
Multichannel Acoustic Test Interface with impedance measurement
The Echo AIO-SA is a multichannel acoustic interface designed for production-line testing and QA/QC verification. Combining four 10W amplifier outputs and six mic/line analog inputs in a single unit, the AIO-SA is an integrated, cost-effective, and reliable high-throughput audio test solution. One of the amplifier outputs includes a 0.1 ohm sense resistor to facilitate impedance measurements. Two additional line inputs are dedicated to voltage monitoring (VMON) and current monitoring (IMON) for impedance measurements.
Each analog input can be individually configured as a line level input or as a measurement microphone input. Microphone inputs include an IEPE microphone conditioning amplifier with integrated constant current power supply (CCP).
The AIO-SA presents a standard USB audio sound card interface and is compatible with most audio test software including APx Flex, LabVIEW, Soundcheck, and ARTA.Ω
features
features
6 IEPE microphone / line inputs with TEDS
3 amplifier outputs
Amplifier output with impedance measurement
USB 2.0 audio with locking connector
Quiet fanless design
specifications
specs
| Sample rates | 48 kHz, 96 kHz, and 192 kHz |
| USB | USB 2.0 audio class compliant |
| Supported operating systems | Windows 7 or later macOS |
| Audio APIs | ASIO, WASAPI, CoreAudio |
| AC Power | Universal power supply 90 - 264 VAC at 50 or 60 Hz |
| Input bandwidth | 72 kHz |
| Input impedance | 1 MΩ |
| Input gain | 1x, 10x, and 100x |
| Full-scale input voltage (1x gain) | 8.75 Vpk |
| Maximum input voltage | 15 Vpk (do not exceed) |
| Dynamic range (1x gain, A-weighted) | > 110 dB |
| THD+N (1x gain, A-weighted) | < -95 dB (20 Hz – 20 kHz) |
| Frequency response | ±0.5 dB (20 Hz – 20 kHz) |
| Constant current supply | 4 mA, 21 V excitation voltage |
| TEDS | IEEE 1451.4 Class 1 |
| Output power (THD+N < .1%) | 10 W continuous at 1 kHz |
| Maximum output voltage | 13.5 Vpk |
| Frequency response | ±0.5 dB (20 Hz – 20 kHz) with 8Ω load |
| THDN (1x gain, A-weighted) | < -95 dB (20 Hz – 20 kHz) |
| Frequency response | ±0.5 dB (20 Hz – 20 kHz) |
| Full-scale input voltage | 17.5 Vpk |
| Full-scale input current | 8.75 Apk |
The SPKR connector is both an amplified output and a voltage/current monitoring input for impedance measurement.
| Single unit | 17.5” (44.4 cm) x 8.75” (22.2 cm) x 1.75” (4.4 cm) 7.2 lbs (3.3 kg) |
| Single unit boxed with cables | 21” (53 cm) x 10” (25.4 cm) x 5” (12.7 cm) 8.75 lbs (4 kg) |
| Shipping carton (4 AIOs) | 22” (55.8 cm) x 22” (55.8 cm) x 12.6” (32 cm) 42.5 lbs (19.3 kg) |
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