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.
AIO-L 192 kHz AIO-LT AIO-L AIO-T 48 kHz 10/10 48, 96, AIO-S AIO-S AIO-A 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...
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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...
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”...
Safety Instructions 1. Read Instructions – Be sure to read all of the safety and operating instructions before operating this product. 2. Keep Instructions – The safety instructions and user's manual should be kept for future reference. 3. Warnings – All warnings on your AIO and in the User's Manual should be followed. 4.
Installation Power is supplied to the AIO with a three conductor AC power cable that plugs into a locking IEC C14 power inlet located on the Interface Module. Power cables supplied with the AIO may have a locking connector to keep it from accidentally coming loose.
AIO Chassis The AIO chassis is a steel case that measures 17.5” x 8.0” x 1.8” (44.5 cm x 20.3 cm x 4.6 cm). It has a blue LED within the front panel to indicate when power is applied. Three bays are available on the rear for inserting the Interface Module and two audio I/O modules: A backplane runs along the front of the chassis with card edge connectors for each module.
AIO Interface Module The Interface Module is the heart of the AIO. It provides DC power to the modules from its integrated AC/DC power supply. An embedded processor on the module communicates with the host computer via USB. This processor: 1.
AIO-A Module Microphone/Line Inputs Four inputs with BNC connectors are available for connecting microphones or other inputs. Input gain, IEPE constant current supply, and TEDS interfacing are software controlled. Full-Scale Input Voltage and Dynamic Range: Gain Full-Scale Dynamic Range Setting Input Voltage (A-weighted) ±...
AIO-A Module (cont.) Class-D Amplified Outputs Two amplified outputs with Euroblock connectors are provided for connecting speakers or other devices. The outputs are differential with (+) and (-) connections and the speaker should be connected directly across them. Both the (+) and (-) outputs are biased at ~7.5V.
AIO-L Module Microphone/Line Inputs Four inputs with BNC connectors are available for connecting microphones or other inputs. Input gain, IEPE constant current supply, and TEDS interfacing are software controlled. Full-Scale Input Voltage and Dynamic Range: Gain Full-Scale Dynamic Range Setting Input Voltage (A-weighted) ±...
AIO-L Module (cont.) Line Level / Headphone Outputs Two amplified outputs with Euroblock connectors are provided for connecting headphones or line level devices. The outputs are differential with (+), (-), and ground connections. For headphones or other low power speakers the ground connection may be ignored.
AIO-S Module Microphone/Line Inputs Two inputs with BNC connectors are available for connecting microphones or other inputs. Input gain, IEPE constant current supply, and TEDS interfacing are software controlled. Full-Scale Input Voltage and Dynamic Range: Gain Full-Scale Dynamic Range Setting Input Voltage (A-weighted) ±...
AIO-S Module (Cont.) SPKR – Voltage/Current Monitoring Inputs The third and fourth inputs on the AIO-S module measure the voltage and current supplied to a speaker (or haptic device) connected to the (+) and (-) outputs of the SPKR connector to calculate impedance, resonance, or other value. Voltage is monitored using separate wires connected to the (V+) and (V-) terminals of the connector.
AIO-T Module TDM Audio Interface The AIO-T module provides a digital TDM (Time-Division Multiplexed) interface for connection directly to audio converters or other ICs. Four outputs (MCLK, SCLK, SYNC, and OUT) and one input (IN) are provided on BNC connectors. The module functions as a TDM master, sourcing the clocks and synchronization signals.
Windows has no built-in support for USB Audio 2.0 and requires a driver to be installed to support the AIO. Echo supplies a driver that supports the ASIO (Audio Stream Input/Output) protocol as well as other audio APIs. Most professional audio and test applications support ASIO, which Echo recommends for use with the AIO.