UHD-FO10-K Overview and Use Cases

What Is the UHD-FO10-K?

The OREI UHD-FO10-K is an 18Gbps HDMI over optical fiber extender kit with audio extraction. It extends HDMI video and audio up to 10km / 33,000ft over single-mode fiber cable.

The kit includes a Transmitter and Receiver. The HDMI source connects to HDMI IN on the Transmitter, the display connects to HDMI OUT on the Receiver, and an optical fiber cable connects the Transmitter to the Receiver.

The UHD-FO10-K supports HDMI 2.0b and HDCP 2.2, with a video bandwidth of 18Gbps. It supports video resolutions up to 4K@60Hz 4:4:4, HDMI loop out on the Transmitter, audio embedding on the Transmitter, audio extraction on the Receiver, bi-directional IR control, RS-232 pass-through, EDID management, HDR, 3D, and transmission distance up to 10km / 33,000ft over single-mode fiber cable.

The UHD-FO10-K is useful for large venues, campuses, conference centers, houses of worship, control rooms, security rooms, theaters, auditoriums, stadiums, and commercial AV installations where HDMI needs to be extended over very long distances.

IMPORTANT — UHD-FO10-K Extends HDMI up to 10km / 33,000ft

The UHD-FO10-K is designed for long-distance HDMI extension over optical fiber.

The manual notes that multi-mode fiber may be possible with the included SFP modules, but distance cannot be guaranteed.

For installation planning, use single-mode fiber cable for the listed 10km / 33,000ft distance.

IMPORTANT — UHD-FO10-K Supports 4K@60Hz 4:4:4

The UHD-FO10-K supports video resolutions up to 4K@60Hz 4:4:4.

Supported video includes:

To get 4K@60Hz, the HDMI source, display, HDMI cables, optical fiber cable, and EDID setting must support the required signal format.

IMPORTANT — Use Single-Mode Fiber Cable

For the full listed distance, use single-mode fiber cable.

The manual states transmission distance is up to 33,000ft / 10km over single-mode fiber cable.

Multi-mode fiber may physically work with the SFP modules, but the distance is not guaranteed.

Poor fiber cable quality, dirty fiber connectors, incorrect fiber type, or incorrect SFP connection can cause:

• No video
• No fiber link
• Flickering
• Signal dropouts
• No HDMI output
• 4K@60Hz not working
• Audio dropouts
• RS-232 or IR control issues

IMPORTANT — This Is Not a CAT Cable Extender

The UHD-FO10-K does not use CAT 5e / CAT 6 cable for HDMI extension.

It uses optical fiber cable.

Do not connect the FIBER ports to:

• Ethernet switch
• Router
• Network switch
• LAN port
• CAT cable system
• Internet network

The optical fiber connection must go from the Transmitter optical fiber module to the Receiver optical fiber module.

IMPORTANT — SFP Modules Are Directional

The manual identifies the optical fiber modules as:

Make sure the Transmitter module stays in the Transmitter and the Receiver module stays in the Receiver.

Do not swap them.

IMPORTANT — HDMI Loop Out Is on the Transmitter

The Transmitter includes HDMI OUT.

This HDMI OUT port is used as a local display output near the HDMI source.

Example setup:

This is useful when the source signal needs to be viewed locally and extended over fiber to a remote display.

IMPORTANT — Receiver Supports Audio Extraction

The Receiver includes AUDIO OUT.

This port extracts audio from the HDMI OUT signal and sends it to an external audio device such as:

• Amplifier
• Speaker
• Audio system
• Powered speakers

If there is no audio from AUDIO OUT, check the source audio format and try setting the source to PCM / Stereo.

IMPORTANT — Transmitter Supports Audio Embedding

The Transmitter includes LINE IN and an AUDIO switch.

The AUDIO switch selects the audio source:

The manual notes that when there is no video signal input, audio can be transmitted separately.

This is useful when sending an external audio source, such as an MP3 player or other analog audio device, along with the fiber extender system.

IMPORTANT — Bi-Directional IR Control Is Supported

The UHD-FO10-K supports bi-directional IR control.

This means IR control can work in either direction:

Typical source-control setup:

• Connect IR Receiver cable to IR IN on the Receiver
• Connect IR Blaster cable to IR OUT on the Transmitter
• Point the remote at the Receiver-side IR Receiver
• Place the Transmitter-side IR Blaster near the source device IR window

The IR frequency range is 20kHz to 60kHz.

IMPORTANT — RS-232 Pass-Through Is Supported

The UHD-FO10-K supports RS-232 pass-through between the Transmitter and Receiver.

The manual lists RS-232 baud rate support from 4800 to 115200bps.

RS-232 can be used for:

• Display control
• Projector control
• Matrix control
• Control-system integration
• Command signal pass-through

Use the included 3-pin Phoenix connectors for RS-232 wiring.

IMPORTANT — EDID Management Is Included

The Transmitter includes an EDID DIP switch.

Use EDID settings when there is no video, incorrect resolution, or audio compatibility issue.

If the remote display should control the source format, use the Receiver HDMI OUT copy mode.

If the local loop display should control the source format, use the Transmitter HDMI LOOP OUT copy mode.

IMPORTANT — CEC Control Is Not Supported

The manual states that the UHD-FO10-K supports 3D and HDR video, but does not support CEC control.

Do not rely on HDMI-CEC commands for controlling the source or display through this extender.

Use IR or RS-232 control instead.

IMPORTANT — Both Units Need Power

The package includes two DC 5V/1A power adapters.

Both units require power:

This model does not use Power over Cable because the signal is transmitted over optical fiber.

Ports and Panel Layout

Step-by-Step Setup

1. Connect the HDMI source device to HDMI IN on the Transmitter. 
   Examples include a DVD player, Blu-ray player, laptop, PC, media player, cable box, HDMI matrix, or other HDMI source.
2. Connect a local display to HDMI OUT on the Transmitter if needed.
3. Connect the optical fiber cable from the Transmitter FIBER module to the Receiver FIBER module.
4. Connect HDMI OUT on the Receiver to the remote HDMI display. 
   Examples include a projector, UHDTV, monitor, or commercial display.
5. Connect one DC 5V/1A power adapter to the Transmitter.
6. Connect the second DC 5V/1A power adapter to the Receiver.
7. If using audio embedding, connect the external audio source to LINE IN on the Transmitter and set the AUDIO switch to LINE IN.
8. If using HDMI audio, set the AUDIO switch to HDMI IN.
9. If using audio extraction, connect AUDIO OUT on the Receiver to an amplifier, speaker, or audio system.
10. If using IR control, connect the IR Receiver and IR Blaster cables in the required direction.
11. If using RS-232, connect the included Phoenix connectors to the RS-232 ports on both units.
12. Set the EDID DIP switch based on the required source/display format.
13. Power on the HDMI source, displays, Transmitter, Receiver, and connected audio/control equipment.
14. Check the POWER, FIBER, and HDMI LEDs.
15. Test video, audio, local loop output, audio extraction, IR, and RS-232.

Optical Fiber Cable Requirement — Critical

Use the correct optical fiber cable for the installation.

Poor fiber installation may cause:

• FIBER LED not lighting
• No HDMI output
• Flickering
• Intermittent video
• Audio dropouts
• RS-232 pass-through issues
• IR control issues
• Signal loss over distance

Clean fiber connectors and avoid bending the fiber beyond its rated bend radius.

HDMI Cable Requirement — Critical

Use high-quality HDMI cables for the source, local display, and remote display.

For 4K@60Hz, use HDMI cables that support 18Gbps video bandwidth.

Poor HDMI cables may cause:

• No picture
• Flickering
• Black screen
• 4K@60Hz not working
• HDR not working
• Audio dropouts
• HDCP handshake issues
• No signal on local HDMI loop output

For troubleshooting, test the HDMI source directly with the display first.

Power Requirement — Critical

Both the Transmitter and Receiver require DC 5V/1A power.

If either unit does not power on, check the power adapter, wall outlet, and DC 5V connection.

Understanding the Transmitter

The Transmitter is installed near the HDMI source.

It has:

• HDMI IN for the source
• HDMI OUT for local display loop output
• LINE IN for audio embedding
• AUDIO switch
• EDID DIP switch
• FIBER output
• IR IN / IR OUT
• RS-232
• SERVICE firmware port
• DC 5V power input
• POWER, FIBER, and HDMI LEDs

The Transmitter sends HDMI, audio, IR, and RS-232 signals over optical fiber to the Receiver.

Understanding the Receiver

The Receiver is installed near the remote display.

It has:

• FIBER input from the Transmitter
• HDMI OUT to the display
• AUDIO OUT for audio extraction
• IR IN / IR OUT
• RS-232
• SERVICE firmware port
• DC 5V power input
• POWER, FIBER, and HDMI LEDs

The Receiver outputs HDMI to the display and extracts audio if needed.

Understanding HDMI Loop Out

The HDMI OUT port on the Transmitter is a local loop output.

This allows a display to be connected near the HDMI source while the same signal is sent over fiber to the Receiver.

Example:

Both displays receive the same HDMI source signal.

Understanding Audio Embedding

Audio embedding allows the Transmitter to send analog LINE IN audio through the extender system.

Use the AUDIO switch to select the audio source.

When there is no video signal input, the manual notes that audio can be transmitted separately.

Understanding Audio Extraction

Audio extraction allows the Receiver to output audio separately through AUDIO OUT.

The Receiver AUDIO OUT extracts audio from the HDMI OUT signal and sends it to an amplifier, speaker, or audio system.

If the external audio device does not receive sound, set the source to PCM / Stereo or check the selected HDMI audio format.

Understanding EDID Settings

EDID tells the HDMI source what resolution and audio format to output.

If there is no picture, test 1080P_2CH first, then move to 4K60_2CH or EDID copy mode.

Understanding Bi-Directional IR

The UHD-FO10-K supports IR signal travel in both directions.

Example 1: Control the source from the display side

Example 2: Control the display from the source side

Use the correct IR Receiver and IR Blaster cables because their pin definitions are different.

Understanding RS-232 Pass-Through

RS-232 pass-through sends command signals between the Transmitter and Receiver.

Supported baud rate:

Use RS-232 for projector control, display control, or integration with control systems.

Understanding LED Indicators

If the FIBER LED is off, check the optical fiber cable, SFP modules, and fiber direction.

If the HDMI LED is off, check HDMI source, EDID, and HDMI cables.

Supported Video and Audio

The UHD-FO10-K supports video formats including:

Supported HDMI audio formats include:

Supported Technical Specifications

What Source Devices Is the UHD-FO10-K Compatible With?

The UHD-FO10-K is compatible with HDMI source devices such as:

• Blu-ray players
• DVD players
• Laptops
• Desktop PCs
• Cable boxes
• Satellite receivers
• Streaming devices
• Media players
• HDMI matrix outputs
• HDMI switch outputs
• DVRs
• NVRs
• AV receivers with HDMI output

The source must output a supported HDMI resolution up to 4K@60Hz.

What Displays Is the UHD-FO10-K Compatible With?

The UHD-FO10-K can connect to HDMI displays such as:

• 4K TVs
• UHD TVs
• Projectors
• Monitors
• Commercial displays
• Conference room displays
• Auditorium displays
• Classroom displays
• Control room displays
• Long-distance display systems

For 4K@60Hz, the display must support 4K@60Hz input.

What Audio Devices Is the UHD-FO10-K Compatible With?

The Receiver AUDIO OUT can connect to:

• Amplifiers
• Speakers
• Powered speakers
• Audio input devices
• External sound systems

The Transmitter LINE IN can connect to:

• MP3 players
• Audio players
• Analog audio source devices

For best compatibility with analog audio extraction, use PCM / Stereo audio.

Frequently Asked Questions

Q: What is the OREI UHD-FO10-K used for? 
A: The UHD-FO10-K is used to extend 4K@60Hz HDMI video, HDMI audio, IR, RS-232, and audio signals over optical fiber up to 10km / 33,000ft.

Q: Does the UHD-FO10-K support 4K@60Hz? 
A: Yes. It supports video resolutions up to 4K@60Hz 4:4:4.

Q: Does the UHD-FO10-K support 8K? 
A: No. It supports up to 4K@60Hz.

Q: Does the UHD-FO10-K support 4K@120Hz? 
A: No. It does not support 4K@120Hz.

Q: What HDMI version does it support? 
A: It supports HDMI 2.0b.

Q: What HDCP version does it support? 
A: It supports HDCP 2.2.

Q: What video bandwidth does it support? 
A: It supports 18Gbps video bandwidth.

Q: How far can it extend HDMI? 
A: It supports transmission up to 10km / 33,000ft over single-mode fiber cable.

Q: Can I use multi-mode fiber? 
A: The manual says it may be possible to use multi-mode fiber with the included SFP modules, but the distance cannot be guaranteed.

Q: What fiber cable should I use? 
A: Use single-mode fiber cable for the listed 10km / 33,000ft distance.

Q: Can I connect it through a network switch? 
A: No. This is not an Ethernet or AV-over-IP extender. The optical fiber cable connects directly between the Transmitter and Receiver fiber modules.

Q: Does the Transmitter have HDMI loop out? 
A: Yes. The Transmitter has HDMI OUT for local display loop output.

Q: What is HDMI loop out used for? 
A: It allows a local display near the source while also sending the HDMI signal over fiber to the Receiver display.

Q: Does it support audio extraction? 
A: Yes. The Receiver has AUDIO OUT for extracting audio from the HDMI OUT signal.

Q: Does it support audio embedding? 
A: Yes. The Transmitter has LINE IN and an AUDIO switch for selecting HDMI IN audio or LINE IN audio.

Q: Can audio transmit without video? 
A: Yes. The manual notes that when there is no video signal input, audio signal can be transmitted separately.

Q: What audio formats are supported through HDMI? 
A: The manual lists LPCM 2/5.1/7.1CH, Dolby Digital / Plus / EX, Dolby TrueHD, DTS, DTS-EX, DTS-96/24, DTS High Res, DTS-HD Master Audio, and DSD.

Q: Does it support HDR? 
A: Yes. HDR video is supported.

Q: Does it support 3D? 
A: Yes. 3D video is supported.

Q: Does it support CEC control? 
A: No. The manual states that CEC control is not supported.

Q: Does it support IR control? 
A: Yes. It supports bi-directional IR control.

Q: What IR frequency is supported? 
A: It supports 20kHz to 60kHz IR frequency.

Q: Does it support RS-232? 
A: Yes. RS-232 pass-through is supported.

Q: What RS-232 baud rate is supported? 
A: The manual lists 4800 to 115200bps.

Q: Does it support EDID management? 
A: Yes. The Transmitter has an EDID DIP switch.

Q: What EDID settings are available? 
A: 11 copies Receiver HDMI OUT, 10 copies Transmitter HDMI LOOP OUT, 01 sets 4K60_2CH, and 00 sets 1080P_2CH.

Q: Which SFP module is for the Transmitter? 
A: The manual lists SFP-BL32TG-10DC as the optical fiber module for the Transmitter.

Q: Which SFP module is for the Receiver? 
A: The manual lists SFP-BL23TG-10DC as the optical fiber module for the Receiver.

Q: Can I swap the SFP modules? 
A: No. Keep the Transmitter SFP module in the Transmitter and the Receiver SFP module in the Receiver.

Q: Does it need power on both ends? 
A: Yes. The package includes two DC 5V/1A power adapters, one for the Transmitter and one for the Receiver.

Q: What should I do if there is no video? 
A: Check both power adapters, check the FIBER LEDs, confirm the fiber cable and SFP modules are connected correctly, test the HDMI source directly with the display, and try a 1080P_2CH EDID setting.

Q: What should I do if the FIBER LED is off? 
A: Check the optical fiber cable, clean the fiber connectors, confirm the correct SFP module is installed in each unit, and make sure the fiber path is connected properly.

Q: What should I do if 4K@60Hz does not work? 
A: Use HDMI cables rated for 18Gbps, confirm the source and display support 4K@60Hz, use single-mode fiber, and try the 4K60_2CH EDID setting.

Q: What should I do if audio extraction does not work? 
A: Confirm the Receiver AUDIO OUT is connected to an amplifier or speaker, check the source audio format, and try PCM / Stereo audio output.

Q: What should I do if IR control does not work? 
A: Confirm the IR Receiver and IR Blaster are connected in the correct direction, place the IR Blaster near the device IR sensor, and make sure the remote uses 20kHz to 60kHz IR.

Q: What should I do if RS-232 does not work? 
A: Check the Phoenix connector wiring, confirm the baud rate is between 4800 and 115200bps, and verify that the control device and controlled device use compatible RS-232 settings.

Q: Does the UHD-FO10-K need external power? 
A: Yes. Connect one included DC 5V/1A power adapter to the Transmitter and one included DC 5V/1A power adapter to the Receiver.