4-Channel XLR Balanced Audio over Fiber Converter

The UF-XLR-4A is a professional 4-channel XLR balanced audio fiber converter designed to transmit broadcast-quality analog audio over optical fiber. It provides four channels of forward audio transmission using XLR balanced interfaces and digital audio encoding, supporting single-mode or multimode fiber according to the selected configuration. The standard single-mode version supports transmission up to 20 km, with longer-distance options available. The transmitter and receiver are used as a matched pair and feature plug-and-play operation for professional AV, broadcast, theater, stadium, rental & staging, theme park, and CCTV audio applications.

What Problems Does the UF-XLR-4A Solve?

1. How can XLR audio be transmitted over long distances?

Traditional XLR cables are mainly designed for local audio connections. When audio equipment is separated by hundreds of meters or several kilometers, long copper cable runs can introduce signal degradation, interference, grounding issues, and installation complexity.

The UF-XLR-4A converts balanced XLR audio into a digital optical signal and transmits it over fiber, allowing professional audio signals to be carried over long distances with optical isolation.

2. How can multiple XLR audio channels be transmitted over one fiber link?

The UF-XLR-4A supports four channels of balanced audio transmission between the transmitter and receiver. This allows multiple XLR audio signals to be transported through a single optical fiber link instead of installing separate long-distance copper audio cables for each channel.

3. How can professional audio systems reduce electromagnetic interference?

Fiber optic transmission provides electrical isolation between the transmitter and receiver. This makes fiber-based audio transmission suitable for environments where electromagnetic interference, ground potential differences, or long cable runs can affect conventional copper audio connections.

4. How can audio be transmitted between separate buildings or venues?

The UF-XLR-4A can use single-mode fiber for transmission distances up to 20 km in the standard configuration. This makes it suitable for connecting audio equipment located in different rooms, buildings, venues, or production areas.

5. How can professional AV systems simplify installation?

The transmitter and receiver are designed as a matched pair with plug-and-play operation. No software configuration or optical adjustment is required, helping simplify deployment in rental, staging, theater, broadcast, and professional AV systems.

How Does the UF-XLR-4A Work?

The UF-XLR-4A uses a transmitter and receiver to transport four channels of balanced XLR audio over optical fiber.

XLR Audio Source → UF-XLR-4A Transmitter → Optical Fiber → UF-XLR-4A Receiver → XLR Audio Equipment

1. Four balanced analog audio signals enter the transmitter through XLR interfaces.

2. The transmitter digitally encodes the audio signals using FPGA-based processing.

3. The encoded audio data is converted into an optical signal.

4. The optical signal is transmitted through single-mode or multimode fiber.

5. The receiver converts the optical signal back into balanced audio.

6. Four XLR outputs provide the recovered audio signals to the downstream audio equipment.

The plug-and-play architecture eliminates the need for software configuration and optical adjustment during normal installation.

4-Channel XLR Balanced Audio over Fiber

The UF-XLR-4A is a 4-channel XLR balanced audio fiber converter for transmitting professional analog audio over optical fiber. It converts four channels of balanced XLR audio into a digital optical signal for reliable long-distance transmission and converts the signal back to XLR audio at the receiver.

Designed for professional AV and broadcast applications, the system supports single-mode and multimode fiber configurations, with transmission distances up to 20 km over single-mode fiber and 1 km over multimode fiber in standard configurations. Longer transmission distances can be customized according to project requirements.

Key Features

• 4-channel balanced XLR audio transmission

• Broadcast-quality analog audio transmission

• Digital audio encoding/decoding with FPGA and clock recovery

• Up to 20 km over single-mode fiber

• Up to 1 km over multimode fiber

• Longer transmission distances available by customization

• XLR balanced audio interfaces

• 100 dB SNR and up to 101 dB dynamic bandwidth

• Automatic high-pass filtering and DC offset isolation

• Integrated audio noise control

• 6 kV differential-mode surge protection for the audio interface

• Plug-and-play operation with no configuration required

• LED indicators for power and optical link status

• Transmitter and receiver used as a matched pair

• Wall-mount or desktop installation

Applications

The UF-XLR-4A is designed for professional audio and AV systems that require reliable transmission of multiple balanced XLR audio channels over optical fiber.

Professional Audio & AV

• Professional AV systems

• Audio distribution systems

• Conference and event venues

• Professional sound systems

Broadcast & Studio

• Broadcast studios

• TV and radio production

• Outside broadcasting

• Audio production facilities

Live Events & Entertainment

• Rental & staging

• Theaters

• Concert venues

• Stadiums

• Theme parks

• Large entertainment venues

Surveillance & Specialized Systems

• CCTV audio transmission

• Security monitoring systems

• Industrial audio links

• Long-distance audio interconnection

• Download FileName：UF-XLR-4A 4Ch XLR Audio Fiber Converter Datasheet V2.0.pdf Size： 914KB

Frequently Asked Questions

What is the UF-XLR-4A?

The UF-XLR-4A is a 4-channel XLR balanced audio over fiber converter designed to transmit professional analog audio over optical fiber.

How many audio channels does the UF-XLR-4A support?

The UF-XLR-4A supports four channels of forward balanced XLR audio transmission.

Is the UF-XLR-4A bidirectional?

No. The UF-XLR-4A provides four-channel forward audio transmission. For bidirectional XLR audio transmission, the UF-XLR-4BA is the corresponding product.

What is the maximum transmission distance?

The standard configuration supports up to 20 km over single-mode fiber and approximately 1 km over multimode fiber. Longer transmission distances can be customized according to project requirements.

What type of fiber does the converter use?

The converter can be configured for single-mode or multimode fiber. The standard single-mode version uses 9/125 μm fiber.

What fiber connector is used?

FC is the default optical connector. ST, SC, and LC connectors are available as options.

Does the UF-XLR-4A require software configuration?

No. The system is designed for plug-and-play operation and does not require software configuration or optical adjustment.

What type of XLR interface is used?

The transmitter uses female XLR balanced audio inputs, while the receiver provides male XLR balanced audio outputs.

What applications is the UF-XLR-4A designed for?

Typical applications include broadcast and studio systems, rental and staging, theaters, stadiums, theme parks, professional AV systems, and CCTV audio transmission.

What is the difference between the UF-XLR-4A and UF-XLR-4BA?

The UF-XLR-4A supports four-channel forward audio transmission, while the UF-XLR-4BA supports four-channel bidirectional audio transmission.