BU-5 Bluetooth® Adapter Unit

Overview

The BU-5 is the Bluetooth® unit for the Transceiver. Please refer to the transceiver's manual for installation and operation of the BU-5.

BU-5 is a Bluetooth dual-mode module series. It supports Bluetooth Low Energy and compliant systems for audio and data communication. BU-5 integrates an ultra-low-power DSP and application processor with embedded flash memory, a high-performance stereo codec, a power management subsystem, I2S, LED drivers, and ADC I/O. Both cores use external flash to execute code, making it easy for users to differentiate products with new features without delaying development. By default, the BU-5 module is equipped with powerful and easy-to-use Feasycom firmware. It's easy to use and completely encapsulated. Firmware enables users to access Bluetooth functionality with simple ASCII commands delivered to the module over a serial interface – it's like a Bluetooth modem. Therefore, BU-5 provides an ideal solution for developers who want to integrate Bluetooth wireless technology into their designs.

Features

• Qualified to Bluetooth® v5.3 specification
• 120 MHz Qualcomm® Kalimba™ audio DSP
• 32/80 MHz Developer Processor for applications
• High-performance 24-bit audio interface
• Active Noise Cancellation: Hybrid, Feedforward, and Feedback modes, using Digital or Analog Mics, enabled using license keys available from Qualcomm®
• Analog Audio: aptX, aptX HD Audio
• Serial interfaces: UART, Bit Serializer (I²C/SPI), USB2.0
• Integrated Li-ion battery charger (Max 200mA)
• Low power modes to extend battery life

Bluetooth Subsystem

• Qualified to Bluetooth v5.3 specification including 2Mbps Bluetooth Low Energy and Bluetooth Low Energy Isochronous Channels
• Qualcomm® Bluetooth High Speed Link
• Single-ended antenna connection with on-chip balun and Tx/Rx switch
• Bluetooth, Bluetooth Low Energy, and mixed topologies supported
• Class 1 support
• Applications: True Wireless™ stereo earbuds, USB to Bluetooth dongle, Bluetooth Speaker, HD Audio Transmitter/Receiver

Specifications

Safety Precautions

Be sure to read the safety precautions of the Operating Manual of the compatible radio to use this product safely.

Packing box can be recycled. ♻️

Plastic bag can be recycled. ♻️

⚡ The equipment may be damaged by static electricity. Touch a metal place to discharge any static electricity from your body.

Declarations and Conditions

EU Declaration of Conformity

Yaesu Musen Co., Ltd. of Tokyo, Japan, hereby declares that this radio equipment BU-5 is in full compliance with EU Radio Equipment Directive 2014/53/EU. The full text of the Declaration of Conformity for this product is available to view at http://www.yaesu.com/jp/red

ATTENTION – Condition of Use

This transceiver operates on frequencies that are regulated. Use of the Transmitter in the EU countries shown in the accompanying table is not permitted without authorization. Users should consult their local spectrum management authority for licensing conditions applicable to this equipment.

AT | BE | BG | CY | CZ | DE | DK | ES | EE | FI | FR | EL | HR | HU | IE | IT | LT | LU | LV | MT | NL | PL | PT | RO | SK | SI | SE | CH | IS | LI | NO

Disposal of Electronic and Electrical Equipment

Products with the symbol (?️) cannot be disposed of as household waste. Electronic and Electrical Equipment should be recycled at a facility capable of handling these items and their waste by-products. Please contact a local equipment supplier representative or service center for information about the waste collection system in your country.

FCC and IC Compliance

FCC Warning

Integration instructions for host product manufacturers according to KDB 996369 D03 OEM Manual v01.

2.2 List of applicable FCC rules

FCC Part 15.247

2.3 Specific operational use conditions

This transmitter/module and its antenna(s) must not be co-located or operating in conjunction with any transmitter. This information also extends to the host manufacturer's instruction manual.

2.4 Limited module procedures

Not applicable

2.5 Trace antenna designs

It is "not applicable" as trace antenna which is not used on the module.

2.6 RF exposure considerations

This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment can be used in portable exposure conditions. The host product manufacturer would provide the above information to end users in their end-product manuals.

2.7 Antennas

Inverted-L antenna; -2.1dBi; 2402 MHz~2480 MHz

2.8 Label and compliance information

The end product must carry a physical label or shall use e-labeling followed KDB784748D01 and KDB 784748 stating "Contains Transmitter Module FCC ID: K660D940X10".

2.9 Information on test modes and additional testing requirements

For more information on testing, please contact the manufacturer.

2.10 Additional testing, Part 15 Subpart B disclaimer

The modular transmitter is only FCC authorized for the specific rule parts (FCC Part 15.247) listed on the grant, and that the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. The final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed when contains digital circuitry.

FCC Statements

(OEM) Integrator has to assure compliance of the entire end-product incl. the integrated RF Module. For 15 B (§15.107 and if applicable §15.109) compliance, the host manufacturer is required to show compliance with 15 while the module is installed and operating.

Furthermore, the module should be transmitting, and the evaluation should confirm that the module's intentional emissions (15C) are compliant (fundamental / out-of-band). Finally, the integrator has to apply the appropriate equipment authorization (e.g. Verification) for the new host device per definition in §15.101.

Integrator is reminded to assure that these installation instructions will not be made available to the end-user of the final host device.

The final host device, into which this RF Module is integrated, has to be labeled with an auxiliary label stating the FCC ID of the RF Module, such as "Contains FCC ID: K660D940X10".

This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

The Integrator will be responsible to satisfy SAR/ RF Exposure requirements when the module is integrated into the host device.

Module statement

The single-modular transmitter is a self-contained, physically delineated component for which compliance can be demonstrated independent of the host operating conditions, and which complies with all eight requirements of § 15.212(a)(1) as summarized below:

1. The radio elements have the radio frequency circuitry shielded.
2. The module has buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal.
3. The module contains power supply regulation on the module.
4. The module contains a permanently attached antenna.
5. The module demonstrates compliance in a stand-alone configuration.
6. The module is labeled with its permanently affixed FCC ID label.
7. The module complies with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee.
8. The module complies with RF exposure requirements.

IC Statements

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

The final host device, into which this RF Module is integrated, has to be labeled with an auxiliary label stating the IC of the RF Module, such as "Contains transmitter module IC: 511B-0D940X10".

This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada's licence-exempt RSS(s). Operation is subject to the following two conditions:

1. This device may not cause interference.
2. This device must accept any interference, including interference that may cause undesired operation of the device.

Radio Frequency Exposure Statement for IC:

This equipment complies with IC exposure limits set forth for an uncontrolled environment. This equipment can be used in portable exposure conditions.