AIO-H

The Headphone Test Module (AIO-H) is designed for making advanced acoustic and impedance measurements of a device under test (DUT)—typically wired headphones, headsets, earbuds, and hearing protection devices. AIO-H is a configuration option for the AIO Test System and requiresthe AIO chassis to operate.

Hardware Features

  • Two mic/line inputs
  • CCP/IEPE/ICP microphone power
  • TEDS reader for microphone data
  • Two single-ended headphone outputs
  • Internal impedance sense resistor
  • Additional inputs for voltage and current monitoring

Key Applications

  • Headphones & earbuds
  • Mobile devices
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Download the AIO-H Module Data Sheet (PDF)

Performance

Performance

The Echo AIO ™ is a modular audio test platform ideally suited for high-volume production-line testing and QA/QC verification. The AIO combines the functionality of multiple standalone devices into a single, integrated unit, making test stations both more reliable and less expensive.

MIC / LINE INPUTS

Two low-noise inputs accommodate a very wide range of input voltages, from dynamic microphones to line-level inputs. Features include adjustable gain, constant current power, and TEDS readers.

MIC / LINE INPUTS

Two low-noise inputs accommodate a very wide range of input voltages, from dynamic microphones to line-level inputs. Features include adjustable gain, constant current power, and TEDS readers.

HEADPHONE OUTPUTS

Two high-quality single-ended outputs optimized for driving headphones and earbuds.

HEADPHONE OUTPUTS

Two high-quality single-ended outputs optimized for driving headphones and earbuds.

IMPEDANCE MEASUREMENT

Two additional inputs are used to measure load impedance via the remote voltage sense terminals and internal sense resistors. These inputs appear as additional audio input channels and can be switched to measure either output channel via the AIO control panel, or the command-line or API interfaces.

IMPEDANCE MEASUREMENT

Two additional inputs are used to measure load impedance via the remote voltage sense terminals and internal sense resistors. These inputs appear as additional audio input channels and can be switched to measure either output channel via the AIO control panel, or the command-line or API interfaces.

configurations

configurations

Inner Module Outer Module Mic/Line Inputs Line Outputs Headphone Outputs Amp Outputs Impedance Digital 5VDC Fixed Battery Simulator GPIO PTH
AIO-H1 AIO-H 2 2 1
AIO-H2 AIO-H AIO-H 4 4 2
AIO-HA AIO-H AIO-A 6 2 2 1
AIO-HL AIO-H AIO-L 6 2 2 1
AIO-HS AIO-H AIO-S 4 2 2 2
AIO-HC AIO-H AIO-C 2 2 1 Yes Yes 8/8 Yes
AIO-HT AIO-H AIO-T 2 2 1 TDM 10/10

specifications

specs

1 MΩ
AC
1x, 10x, and 100x selectable
8.75 Vpk (1x gain, +15.8dBV)
±15 Vpk (do not exceed)
±0.01 dB 10 Hz – 22 kHz  (48k SR)
±0.01 dB 10 Hz – 44 kHz  (96k SR)
±0.1 dB   10 Hz –  86 kHz  (192k SR)
94 kHz (-3dB @ 192k SR)
112 dB (20 kHz BW)
< -105 dB (1x gain, 20 Hz – 20 kHz, 20 kHz BW)
17uV
-95 dB (SMPTE 4:1 @ full scale)
<-122 dB (20 Hz – 20 kHz)
<0.05 ° @ 20 kHz
CCP/IEPE/ICP, 4 mA
IEEE 1451.4 Class 1
350 mΩ
DC
16 Ω
3 Vrms (+9.5 dBV) (≥ 32 Ω load)
125 mA/channel
±4.24 VDC (≥ 32 Ω load), ±2.8 VDC (16 Ω load)
< ±6 mV
(32 Ω) 281 mW @ < 0.0016% THD+N (20 Hz – 20 kHz)
(16 Ω) 250 mW @ < 0.0019% THD+N (20 Hz – 20 kHz)
±0.01 dB 10 Hz – 21 kHz (48k SR)
±0.01 dB 10 Hz – 43 kHz (96k SR)
±1 dB 10 Hz – 75 kHz (192k SR)
89 kHz (-3 dB @ 192k SR)
120 dB (20 kHz BW)
2.8 μV
< -82 dB (> 375 µW)
< -119 dB (20 Hz – 20 kHz)
< ±0.1° @ 20 kHz
< 1% (20 Hz – 20 kHz)
voltage 3 Vrms
current 125 mA
< -95 dB (20 Hz – 20 kHz)
±0.5 dB (20 Hz – 20 kHz)
44.1 kHz – 192 kHz
USB 2.0 audio class compliant
Windows 10 or later, macOS
ASIO, WASAPI, Core Audio
90 – 264 VAC, 50/60 Hz, 60 W
17.5” (44.4 cm) x 8.75” (22.2 cm) x 1.75” (4.4 cm), 7.2 lbs (3.3 kg)
21” (53 cm) x 10” (25.4 cm) x 5” (12.7 cm), 8.75 lbs (4 kg)
22” (55.8 cm) x 22” (55.8 cm) x 12.6” (32 cm), 42.5 lbs (19.3 kg)
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