AIO-AC
Multifunction Audio Test Interface
AIO-AC
The Echo AIO-AC is a multichannel acoustic interface designed for production-line testing and QA/QC verification. Combining two 10W amplifier outputs, two balanced line-level/headphone outputs, four mic/line analog inputs, 8 GPIO inputs, 8 GPIO outputs, 5V DC power supply, and variable 2V DC power supply for battery simulation in a single unit, the AIO-AC 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 variable 2V DC power supply can also measure DC current.
The AIO-AC 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
2 amplifier outputs
2 differentially balanced line / headphone outputs
Fixed 5 VDC power supply
Variable 2 VDC low-power supply
8×8 auxiliary GPIO
USB 2.0 audio with locking connector
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 |
| 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) |
| Fixed power supply | 5 VDC, 1 A |
| Variable power supply | 1 mVDC to 2 VDC, 10 mA |
| General purpose outputs | 8 pins TTL |
| General purpose inputs | 8 pins TTL |
| 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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