> ## Documentation Index
> Fetch the complete documentation index at: https://support.echotm.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Echo Support Center

> Technical documentation and support resources for Echo Test + Measurement products

## Products

<Card title="ATS - Acoustic Test System" icon="waveform-lines" href="/ats" horizontal>
  Professional USB audio test platform for precision acoustic measurements in production environments.
</Card>

<Card title="ATS-BT Bluetooth Module" icon="bluetooth" href="/ats-bt" horizontal>
  Advanced Bluetooth 5.4 test module featuring LE Audio, LC3 codec, and aptX support.
</Card>

<Card title="AIO - Acoustic I/O Test System" icon="gauge-high" href="/aio" horizontal>
  Modular test platform with flexible acoustic and digital I/O. Operates as a USB 2.0 audio device.
</Card>

## Quick Links

<Columns cols={2}>
  <Card title="Technical Documentation" icon="book">
    * [ATS User Manual](/ats/ats-user-manual)
    * [ATS-BT Quick Start Guide](/ats-bt/quickstart)
    * [AIO User Manual](/aio/aio-user-manual)
    * [CLI User Guide](/ats/cli-user-guide)
    * [API Reference](https://github.com/mattgonzalez/EchoAIOExample)
  </Card>

  <Card title="Software & Downloads" icon="rocket">
    * [ATS Downloads](/ats/downloads)
    * [ATS-BT Firmware](/ats-bt/firmware)
    * [AIO Downloads](/aio/downloads)
    * [Legacy Software](/legacy/legacy)
  </Card>
</Columns>

## About Echo Test + Measurement

Echo Test + Measurement specializes in professional acoustic test and measurement solutions. Our products combine precision measurement capabilities with intuitive interfaces to streamline testing workflows for audio professionals, engineers, and manufacturers worldwide.

<Card title="" icon="envelope" href="https://echotm.com/contact/" horizontal>
  Contact Echo for info or support.
</Card>