UHDS-102A Overview and Use Cases

What Is the UHDS-102A?

The OREI UHDS-102A is a 1x2 HDMI 2.0 splitter with 4K-to-1080p scaling and audio extraction. It distributes one HDMI source to two HDMI displays while also extracting audio through optical and 3.5mm analog outputs.

The UHDS-102A supports HDMI 2.0b, HDCP 2.2/1.4, 18Gbps bandwidth, resolutions up to 4K@50/60Hz 4:4:4, COPY/AUTO EDID management, optical audio, analog stereo audio, bypass operation, and selectable 4K-to-1080p downscaling.

It is suitable for home theaters, conference rooms, classrooms, restaurants, digital signage, retail displays, and AV systems requiring two displays and separate audio equipment.

IMPORTANT — UHDS-102A Is a 1x2 HDMI Splitter

The UHDS-102A mirrors one source. It does not send independent content to each display.

IMPORTANT — Supports 4K@60Hz 4:4:4

The source, HDMI cables, displays, and EDID setting must support the selected signal.

IMPORTANT — Both Displays Show the Same Content

The UHDS-102A sends the same HDMI source to Outputs 1 and 2.

Connecting a computer duplicates the same screen on both displays.

IMPORTANT — 4K-to-1080p Downscaling

The front panel includes a 4K→1080P dial switch.

Use downscaling when a 1080p display cannot accept the 4K source signal.

The manual describes this as a general output setting and does not specify independent scaling for each HDMI output. When enabled, expect the output signal to be downscaled rather than one output remaining 4K while the other becomes 1080p.

Downscaling does not convert 1080p to 4K.

IMPORTANT — COPY and AUTO EDID Modes

The UHDS-102A has a two-position EDID switch.

EDID tells the source which video resolution and audio format to output.

Understanding COPY EDID Mode

COPY mode sends the EDID from the display connected to HDMI Output 1 back to the source.

Use COPY mode when:

1. Output 1 is the primary display
2. The source should follow Display 1’s capabilities
3. Both displays support the same format
4. A fixed reference display is needed 
    
   If Display 2 has lower capabilities than Display 1, it may not show video or play audio correctly.

Understanding AUTO EDID Mode

AUTO mode compares the EDID information from both connected displays and sends the selected information to the source.

Use AUTO mode when:

1. Different display models are connected
2. The displays have different capabilities
3. One display does not work in COPY mode
4. A compatible shared format is needed 
    
   After changing EDID, restart or reconnect the HDMI source if it does not renegotiate automatically.

IMPORTANT — Optical and Analog Audio Extraction

The UHDS-102A extracts audio from the HDMI input to two separate audio outputs.

HDMI audio continues to pass to the connected displays.

Analog Audio Requirement

The L/R analog output supports PCM 2.0 only.

If analog audio does not work:

1. Open the HDMI source’s audio settings.
2. Select PCM, LPCM, or Stereo.
3. Disable bitstream or surround output.
4. Reconnect or restart the source if necessary.

Compressed multichannel audio cannot be converted to analog stereo unless the source sends PCM 2.0.

Supported HDMI Audio

Supported Optical Audio

The manual lists the following optical audio formats:

Actual compatibility also depends on the connected optical audio device.

Supported Analog Audio

For reliable analog audio, set the HDMI source to PCM stereo.

Ports, Controls, and Indicators

Front Panel

Rear Panel

Step-by-Step Setup

1. Turn off the HDMI source, displays, and audio equipment.
2. Connect the HDMI source to HDMI IN.
3. Connect the primary display to HDMI OUT 1.
4. Connect the second display to HDMI OUT 2.
5. If required, connect OPTICAL OUT to an amplifier, receiver, or soundbar.
6. If required, connect L/R OUT to powered speakers or an analog amplifier.
7. Select AUTO or COPY EDID mode.
8. Set the 4K→1080P switch:
   1. OFF for pass-through.
   2. ON to downscale a compatible 4K input to 1080p.
9. Connect the included DC 5V/1A power adapter.
10. Turn on the displays, audio equipment, and HDMI source.
11. Check the POWER, INPUT, and OUTPUT LEDs.
12. Test video and audio on all connected equipment.

HDMI Cable Requirement — Critical

Use high-quality 18Gbps HDMI cables for 4K@60Hz 4:4:4.

Poor or excessively long HDMI cables may cause:

1. No video
2. Flickering
3. Intermittent black screens
4. 4K@60Hz not working
5. HDCP errors
6. Audio dropouts
7. One output not working 
    
   The manual does not specify maximum HDMI cable lengths. 
    
   For troubleshooting, test each cable directly between the source and display.

Power Requirement — Critical

Use the included adapter or a compatible replacement with the correct voltage, polarity, connector, and current rating.

Application Example

The application diagram shows:

1. Two UHD TVs connected to HDMI Outputs 1 and 2
2. An amplifier connected to OPTICAL OUT
3. Stereo speakers connected to L/R OUT
4. A DVD or Blu-ray player connected to HDMI IN
5. The included power supply connected to DC 5V 
    
   This demonstrates simultaneous HDMI distribution and separate digital and analog audio extraction.

Package Contents

The package includes:

1. 1 × UHDS-102A 1x2 HDMI 2.0 splitter
2. 1 × DC 5V/1A power adapter
3. 1 × User manual 
    
   HDMI, optical, and 3.5mm audio cables are not listed as included.

Technical Specifications

Compatible HDMI Sources

The UHDS-102A can be used with compatible HDMI sources such as:

1. DVD players
2. Blu-ray players
3. Cable boxes
4. Satellite receivers
5. Streaming media players
6. Game consoles
7. Desktop computers
8. Laptops with HDMI output
9. DVRs and NVRs
10. Digital signage players
11. HDMI switch outputs
12. HDMI matrix outputs 
     
    The source must output a supported resolution up to 4K@60Hz.

Compatible Displays

The UHDS-102A can connect to:

1. 4K televisions
2. 1080p televisions
3. Monitors
4. Projectors
5. Commercial displays
6. Conference room displays
7. Classroom displays
8. Retail displays
9. Digital signage displays
10. Home theater displays 
     
    Use the downscaling switch when a connected 1080p display cannot accept the 4K source signal.

Compatible Audio Equipment

The UHDS-102A can connect to:

1. AV receivers
2. Amplifiers
3. Soundbars with optical input
4. Digital audio processors
5. Powered speakers
6. Analog stereo amplifiers
7. 3.5mm audio systems 
    
   Use OPTICAL OUT for digital audio and L/R OUT for PCM stereo.

Frequently Asked Questions

Q: What is the OREI UHDS-102A used for? 
A: It distributes one HDMI source to two displays and extracts audio through optical and analog outputs.

Q: How many HDMI inputs does it have? 
A: It has one HDMI input.

Q: How many HDMI outputs does it have? 
A: It has two HDMI outputs.

Q: Do both displays show the same content? 
A: Yes. Both outputs receive the same HDMI source.

Q: Can it show different content on each display? 
A: No. It is a splitter, not a matrix switch.

Q: Can it extend a computer desktop across two displays? 
A: No. It mirrors the same computer image.

Q: Does it support 4K@60Hz? 
A: Yes. It supports up to 4K@50/60Hz 4:4:4.

Q: Does it support 8K or 4K@120Hz? 
A: No. Its maximum listed resolution is 4K@60Hz.

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

Q: What HDCP version does it support? 
A: HDCP 2.2 and HDCP 1.4.

Q: Does it support HDR? 
A: HDR is not listed in this manual.

Q: Does it support downscaling? 
A: Yes. It supports selectable 4K-to-1080p downscaling.

Q: How do I enable downscaling? 
A: Set the 4K→1080P switch to ON.

Q: What happens when the downscaling switch is OFF? 
A: The input and output remain in bypass/pass-through mode.

Q: What happens when the downscaling switch is ON? 
A: A compatible 4K input is downscaled to 1080p output.

Q: Can one output remain 4K while the other is downscaled? 
A: The manual does not describe independent per-output scaling. The switch is presented as a general output downscaling control.

Q: What is AUTO EDID mode? 
A: AUTO compares the EDID information from displays connected to Outputs 1 and 2.

Q: What is COPY EDID mode? 
A: COPY uses the EDID from the display connected to HDMI Output 1.

Q: Which output is the primary EDID reference? 
A: HDMI Output 1.

Q: Does the UHDS-102A extract audio? 
A: Yes. It provides optical and 3.5mm analog audio outputs.

Q: What format does the L/R analog output support? 
A: PCM 2.0.

Q: Why is the analog output silent? 
A: Set the HDMI source audio output to PCM, LPCM, or Stereo.

Q: Does it support optical audio? 
A: Yes. It has an S/PDIF optical output.

Q: Does it support Dolby TrueHD and DTS-HD Master Audio? 
A: These formats are listed in the manual.

Q: Does it support ARC or eARC? 
A: ARC and eARC are not listed.

Q: What is the SERVICE port used for? 
A: It is a firmware update port intended for manufacturer use only.

Q: What power adapter does it use? 
A: It uses a DC 5V/1A power adapter.

Q: What is the maximum power consumption? 
A: 2.8W.

Q: What do the blue LEDs indicate? 
A: The POWER LED indicates power, the INPUT LED indicates an active source, and the OUTPUT LEDs indicate connected active displays.

Q: Why is there no video on either display? 
A: Check the power adapter, source, HDMI input cable, INPUT LED, EDID mode, downscaling switch, and source resolution.

Q: Why does only one display show video? 
A: Check the affected display’s power, HDMI input, cable, and OUTPUT LED. Test it on the other splitter output.

Q: Why does my 1080p display not show the 4K source? 
A: Set the 4K→1080P switch to ON or manually set the source to 1080p.

Q: Why does 4K@60Hz not work? 
A: Confirm that the source, displays, and HDMI cables support 4K@60Hz 4:4:4. Use 18Gbps HDMI cables and keep downscaling OFF.

Q: Why is optical audio not working? 
A: Check the optical cable, select the correct input on the audio device, and confirm that the source format is supported.

Q: Does the UHDS-102A require external power? 
A: Yes. Connect the included DC 5V/1A power adapter.