This document describes the BT17 Wireless Audio Adapter, a multifunctional audio adapter designed for home appliances. It functions as both a wireless transmitter (TX mode) and a wireless receiver (RX mode), and also offers a bypass mode (non-Bluetooth).

Function Description

The BT17 Wireless Audio Adapter serves as a versatile solution for integrating audio devices into a wireless setup. In TX (Transmitter) mode, it allows you to wirelessly stream audio from sources like TVs, DVD players, or other audio devices to Bluetooth-enabled headphones or speakers. In RX (Receiver) mode, it enables you to receive audio wirelessly from Bluetooth-enabled devices such as phones or tablets and output it to your home audio system or wired speakers. The Bypass mode allows for a direct wired connection, bypassing Bluetooth functionality, which is useful when Bluetooth is not desired or available.

Important Technical Specifications

The device supports both optical and AUX/RCA audio connections for input and output, providing flexibility for various audio setups. It is powered via a DC 5V USB cable. The optical mode supports a sampling rate under 48 kHz. The device features a display that shows the current mode (TX, RX, Bypass), connection status (searching, connecting), and paired device information.

Usage Features

General Operation:

Power On/Off: Short press the power button to turn the device on or off.
Mode Switching: Short press the mode switch button (labeled with a double-headed arrow) to cycle between TX, RX, and Bypass modes.
Display: The display shows the current operating status, including mode, connection status, and paired devices.
MFB Button (Multi-Function Button): This rotary knob allows for navigation and selection.
- RX Mode: Rotate clockwise for volume up, counter-clockwise for volume down. Short press for pause/play.
- TX Mode: Rotate clockwise to move screen options down, counter-clockwise to move screen options up. Short press to confirm the selected device.

As a Wireless Transmitter (TX Mode):

Connect Audio Source: Connect your audio source (TV, DVD, etc.) to the "BT17" via the provided audio cables (optical or AUX/RCA).
Power Connection: Connect the "BT17" to a power source (TV, PC USB socket, or power adapter) using the USB cable.
Power On: The "BT17" automatically boots after power on, or short press the power button for 3 seconds to turn it on.
Select TX Mode: Click the mode switch button to choose "TX" mode. The display will show "searching......".
Pair with Headphones/Speakers:
- Put your Bluetooth-enabled headphones/speakers into pairing mode.
- The searched Bluetooth device name will be shown on the display.
- Rotate the MFB knob to select the device and click to confirm. Wait for connection.
Pairing a Second Device: To quickly disconnect the connected Bluetooth device, restart the search mode by clicking the Bluetooth button, then repeat step 5. Alternatively, click the power button to disconnect the connected Bluetooth device, re-open the blind search mode for other Bluetooth devices, and connect automatically.

As a Wireless Receiver (RX Mode):

Connect Speaker: Connect your speaker to the "BT17" "RX output" port with the audio cable provided (optical or AUX/RCA).
Power Connection: Connect the "BT17" to a power source with the USB cable and adapter.
Power On: The device will automatically turn on, or short press the power button to turn it on.
Select RX Mode: Click the mode switch button to choose the "RX" mode. The display will show "connecting......".
Pair with Phone/Tablet:
- Activate Bluetooth on your phone or other device to find "BT17".
- Wait and connect.
- Pair "BT17" with the second Bluetooth-enabled phone/PC/tablet. Repeat step 5.

Bypass Mode (Non-Bluetooth Mode):

Connect Audio Source: Connect the audio source (TV, DVD, etc.) to the "BT17" "TX Input" port using the provided audio cables (optical or AUX/RCA).
Connect Speaker: Connect your speaker to the "BT17" "Output" port with your own audio cable (optical or AUX/RCA).
Power Connection: Connect the "BT17" to a power source with the USB cable and adapter.
Power On: The device will automatically turn on, or short press the power button to turn it on.
Select Bypass Mode: Click the mode switch button and switch to "Bypass Mode". The display will show "Bypass Mode".
Ready for Use:
- Important Notice: Ensure your TV output is valid. AUX test with earphones.
- Does NOT support Dolby/DTS under OPT.
- Bypass can only work with the same type of input/output, i.e., AUX input to AUX output or OPT input to OPT output.

Maintenance Features

Troubleshooting:

Problems with Bluetooth Connection:
- Confirm your Bluetooth device supports the wireless profiles listed in the specifications.
- Ensure BT17 and your Bluetooth device are next to each other or within 1 meter.
- Make sure both BT17 and your Bluetooth device are in pairing mode.
- If the wireless pairing between BT17 and your mobile phone reboots, confirm the use of the correct input power. The machine supports 5V DC power supply. Do not use fast charging or poor quality miscellaneous power input, as this may lead to undervoltage or overcurrent overprotection.
No Music from Audio System after Connection:
- Output defaults to AUX output priority. If optical fiber output is required, ensure there is no external AUX cable connected to the AUX output port.
- In optical mode, "BT17" supports devices with a sampling rate under 48kHz.
- You need to make sure the TV audio format is set to PCM (Fig-1) and TV sound out as "External Speakers" (Fig-2).

Product Overview (Buttons and Interfaces):

Power Button: Short press to power on or off.
Bluetooth Button:
- TX mode: Short press to quickly disconnect the connected Bluetooth device, restart the search mode, select the second Bluetooth device, and connect.
- RX mode: Short press to quickly disconnect the connected Bluetooth device and re-enter pairing mode.
Mode Switch Button: Click to choose TX, RX, BYPASS mode.
- TX mode: Short press to disconnect the connected Bluetooth device, re-open the blind search mode for other Bluetooth devices, and connect automatically.
- RX mode: No function.
MFB Button (Multi-Function Button):
- RX Mode: Rotate clockwise for volume up, counter-clockwise for volume down. Short press for pause/play.
- TX Mode: Rotate clockwise to move screen options down, counter-clockwise to move screen options up. Short press to confirm the selected device.
DC IN: Type-C charging port.
RX Output: Output (RX mode).
TX Input: Input (TX mode).
Display: Displays working status.

Ainostone BT17 - Page 6