AIO-AC
Multifunction audio test interface
AIO-AC
The AIO-AC is a multifunction audio test interface with two amplifier outputs, two differentially balanced line-level outputs, four microphone inputs, dual DC power supplies, auxiliary GPIO control, and a standard USB audio interface in a single unit.
Each microphone input features an IEPE microphone conditioning amplifier with integrated constant current supply and can also accept line level signals.
The line-level outputs can also drive headphones.
The AIO-AC provides a constant 5 volt DC power supply along with a variable DC low-power supply up to 2 volts. The variable power supply can also measure DC current.
The auxiliary jacks each have 8 pins of software-controllable GPIO.
The AIO-AC presents a standard sound card interface and is compatible with most acoustic test software.
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 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 |
| Output power (THD+N < .1%) | 32 mW continuous at 1 kHz |
| Maximum output voltage | 2.65 Vpk |
| Frequency response | ±0.5dB 20 Hz – 20 kHz |
| Minimum load | 32 Ω |
| 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 (6 AIOs) | 22” (55.8 cm) x 22” (55.8 cm) x 17” (43.1 cm) 59.5 lbs (27 kg) |
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