AIO-L2
Multichannel Line-level Test Interface
The Echo AIO-L2 is a multichannel acoustic interface designed for production-line testing and QA/QC verification. Combining four balanced line-level/headphone outputs and eight mic/line analog inputs in a single unit, the AIO-L2 is an integrated, cost-effective, and reliable high-throughput audio test solution.
Each 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). Line level outputs can also drive most headphones.
The AIO-L2 presents a standard USB audio sound card interface and is compatible with most audio test software including APx Flex, LabVIEW, Soundcheck, and ARTA.
features
features
8 IEPE microphone / line inputs with TEDS
4 differentially balanced line / headphone outputs
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 |
| Minimum load | 600 Ω |
| Full-scale output voltage | 2 Vrms (+6 dBV) |
| Frequency response | ±0.02 dB (20 Hz – 20 kHz) |
| Output bandwidth (-3 dB) | 90 kHz |
| Dynamic range (A-weighted) | > 117 dB |
| THD+N (A-weighted) | < -100 dB (20 Hz – 20 kHz) |
| 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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