ECHO AIO
™
TEST INTERFACE
Product Manual
June 2017
© 2017 Echo Digital Audio
AIO Product Manual
1
Contents
INTRODUCTION ........................................................................................................................................ 2
AIO CONFIGURATIONS ............................................................................................................................ 3
AIO DIMENSIONS AND WEIGHT (ALL MODELS): ................................................................................. 5
SAFETY INSTRUCTIONS.......................................................................................................................... 6
INSTALLATION .......................................................................................................................................... 7
AIO CHASSIS ............................................................................................................................................. 8
AIO INTERFACE MODULE ....................................................................................................................... 9
POWER SUPPLY ....................................................................................................................................... 9
AIO-A MODULE ....................................................................................................................................... 10
MICROPHONE/LINE INPUTS ..................................................................................................................... 10
CLASS-D AMPLIFIED OUTPUTS ............................................................................................................... 11
AIO-L MODULE ........................................................................................................................................ 12
MICROPHONE/LINE INPUTS ..................................................................................................................... 12
LINE LEVEL / HEADPHONE OUTPUTS ....................................................................................................... 13
AIO-S MODULE ....................................................................................................................................... 14
MICROPHONE/LINE INPUTS ..................................................................................................................... 14
SPKR – VOLTAGE/CURRENT MONITORING INPUTS ................................................................................. 15
CLASS-D AMPLIFIED OUTPUTS ............................................................................................................... 15
AIO-T MODULE ........................................................................................................................................ 16
TDM AUDIO INTERFACE ......................................................................................................................... 16
USB AUDIO .............................................................................................................................................. 17
MACOS (COREAUDIO) ............................................................................................................................ 17
WINDOWS (ASIO) .................................................................................................................................. 17
MULTI-AIO SYNCHRONIZATION ............................................................................................................... 17
AIO Product Manual
2
Introduction
The AIO (All-In-One) Test Interface is a USB audio interface compatible with Macintosh
and Windows computers. Along with a computer running test software, it provides a
platform for acoustic testing of cell phones, tablets, computers and their components.
The AIO combines the functionality of multiple pieces of test equipment into a single,
integrated device for increased reliability at a reduced cost. It is ideally suited for a
high-volume production environment where testing occurs on a continual basis.
The test computer and AIO communicate using a USB 2.0 Hi-Speed connection. The
AIO contains data converters along with input and output amplifiers needed for
connecting speakers, microphones, and other test equipment. Audio test tones are
played out through the AIO and the responses of the unit under test are then recorded
for analysis.
The AIO is a modular design consisting of a chassis, a USB Interface Module, and one
or two audio I/O modules. The Interface Module is included with every AIO and
provides the USB connection and power to the unit. To support different types of test
stations there are several types of audio I/O modules available for the AIO. These
differ in both the type and number of inputs and outputs available on the module.
Module types may be mixed within a single chassis, allowing for many different AIO
configurations. An AIO-S is shown below:
When a test station needs more inputs and outputs than a single AIO can provide,
multiple AIOs can be used together as a group. The audio clocks may be
synchronized, allowing them to act as if they were a single, integrated unit.
AIO Product Manual
3
AIO Configurations
The AIO Test Interface is available in seven models depending on what module types
are installed (AIO-A, AIO-S, AIO-L, AIO-T):
AIO
Model
Inner
Module
Outer
Module
Mic/Line
Inputs
10W
Outputs
Line/HP
Outputs
Imped/
Haptic
Digital
Sample
Rates
AIO-1
AIO-A
--- 4 2
---
---
---
48, 96,
192 kHz
AIO-2
AIO-A
AIO-A 8 4
---
---
---
48, 96,
192 kHz
AIO-AT
AIO-A
AIO-T
4 2 ---
---
TDM
10/10
48 kHz
AIO-L1
AIO-L
--- 4 --- 2 ---
---
48, 96,
192 kHz
AIO-L2
AIO-L
AIO-L
8
--- 4 ---
---
48, 96,
192 kHz
AIO-LT
AIO-L
AIO-T
4
--- 2 ---
TDM
10/10
48 kHz
AIO-S
AIO-S
AIO-A 6 3
---
1
---
48, 96,
192 kHz
Table 1 – AIO Models
AIO-1 (AIO Test Interface with 1 AIO-A Module)
AIO-2 (AIO Test Interface with 2 AIO-A Modules)
AIO Product Manual
4
AIO Configurations (cont.)
AIO-AT (AIO Test Interface with 1 AIO-A Module and 1 AIO-T Module)
AIO-L1 (AIO Test Interface with 1 AIO-L Module)
AIO-L2 (AIO Test Interface with 2 AIO-L Modules)
AIO-LT (AIO Test Interface with 1 AIO-L Module and 1 AIO-T Module)
AIO Product Manual
5
AIO Configurations (cont.)
AIO-S (AIO Test Interface with 1 AIO-S and 1 AIO-A Modules)
AIO Dimensions and Weight (all models):
AIO alone:
17.5” (44.4 cm) x 8.75” (22.2 cm) x 1.75” (4.4 cm), 7.2 lbs (3.3 kg)
AIO in box 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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