1. Introducció
The OREI HDS-401MV HDMI Switcher 4x1 Quad Screen Multiviewer is designed to connect up to four HDMI input sources to a single HD display. This device supports 1080p resolution, DTS/Dolby audio, and offers seamless switching between sources. It features multiple display modes, including a quad-screen multiviewer, allowing simultaneous viewing of up to four inputs. Control options include an IR remote and front panel buttons, with RS-232 for advanced integration. This switcher is ideal for applications requiring flexible display management of multiple HDMI sources.
2. Contingut del paquet
Si us plau, assegureu-vos que tots els elements estiguin presents al paquet:
- 1x OREI HDS-401MV HDMI Switcher
- 1x adaptador d'alimentació de 5 V CC
- 1x control remot IR
- 1 x manual d'usuari
- Mounting Brackets (for installation)

Figure 2.1: Package contents including the switcher, power adapter, remote, and manual.
3. Producte acabatview
3.1 Tauler frontal
The front panel provides essential controls and indicators for easy operation.
- LED d'alimentació: Indica l'estat d'alimentació de la unitat.
- Receptor IR: Receives signals from the included IR remote control.
- Input LEDs (1-4): Indicate which HDMI input is currently selected or active.
- Scaler Button: Cycles through different scaling options.
- Botó d'àudio: Mutes audio or activates the on-screen display (hold for 1.5 seconds).
- Botó de mode: Cycles through the 5 available display modes (single, 2-screen, 4-screen equal, 4-screen 1-large/3-small, 4-screen 2-large/2-small).
- Botó de selecció: Selects the active input source.
3.2 Panell posterior
The rear panel houses all input and output connections.
- Entrades HDMI (IN 1-4): Connect your HDMI source devices (e.g., gaming consoles, media players).
- HDMI Output (OUTPUT): Connects to your display device (TV, monitor).
- Sortida VGA: Provides an alternative video output for VGA-compatible displays.
- Audio Output (3.5mm Stereo): Analog audio output for external speakers or ampaixecadors.
- Optical (TOSLINK) Output: Digital audio output for soundbars or AV receivers.
- Port micro USB: Used for firmware updates and RS-232 control.
- Entrada d'alimentació DC 5V: Connect the included 5V DC power adapter.
- Interruptor d'encesa/apagada: Power toggle for the unit.

Figure 3.1: Front and rear panel view of the OREI HDS-401MV HDMI Switcher, highlighting input/output ports and control buttons.
4. Configuració
Follow these steps to set up your OREI HDS-401MV HDMI Switcher:
- Connectar fonts HDMI: Connect up to four HDMI source devices (e.g., Blu-ray player, gaming console, cable box, PC) to the HDMI IN 1-4 ports on the rear panel of the switcher using high-quality HDMI cables.
- Connecta a la pantalla: Connect your HD display (TV, monitor, projector) to the HDMI OUTPUT port on the rear panel of the switcher using an HDMI cable. If using a VGA display, connect it to the VGA output.
- Connectar àudio (opcional): If you wish to extract audio to an external sound system, connect your audio device to either the 3.5mm Stereo Audio Output or the Optical (TOSLINK) Output.
- Encès: Connect the included 5V DC power adapter to the DC 5V port on the rear panel and plug it into a power outlet. Flip the On/Off switch to the 'On' position. The Power LED on the front panel will illuminate.
- Position IR Remote: Ensure the IR receiver window on the front panel is unobstructed if you plan to use the remote control.

Figure 4.1: Diagram illustrating typical connections for the OREI HDS-401MV HDMI Switcher with various input sources and display options.
5. Instruccions de funcionament
5.1 Entrades de commutació
You can switch between HDMI input sources using the front panel buttons or the IR remote control.
- Panell frontal: Press the 'Select' button repeatedly to cycle through the connected HDMI inputs (IN 1 to IN 4). The corresponding Input LED will light up.
- Comandament IR: Use the numbered buttons (1, 2, 3, 4) on the remote to directly select the desired HDMI input.
5.2 Múltiplesviewer Modes
The HDS-401MV offers 5 different display modes for viewing multiple inputs simultaneously or individually.
- Mode 1 (Single Screen): Displays one selected HDMI input in full screen.
- Mode 2 (2-Screen Mode): Displays two selected HDMI inputs side-by-side.
- Mode 3 (4-Screen Equal): Displays all four HDMI inputs in equal-sized quadrants.
- Mode 4 (4-Screen 1-Large/3-Small): Displays one large HDMI input with three smaller inputs on the side.
- Mode 5 (4-Screen 2-Large/2-Small): Displays two large HDMI inputs with two smaller inputs.
Press the 'Mode' button on the front panel or the remote control to cycle through these display modes. Use the 'Select' button to choose which inputs are displayed in multi-viewer modes.

Figure 5.1: Visual representation of the various multiviewer display modes available on the OREI HDS-401MV.
5.3 Gestió d'àudio
The switcher supports audio extraction and pass-through for various formats.
- Silencia l'àudio: Tap the 'Audio' button on the front panel or remote to mute/unmute the audio from the selected HDMI input.
- Visualització en pantalla (OSD): Hold the 'Audio' button for 1.5 seconds to activate the On-Screen Display for advanced audio settings.
- Audio Pass-through: Supports DTS Digital, Dolby Digital, LPCM, True HD/DTS-HD master audio, and pass-through for 5.1, 7.1, and 9.1 channel audio.
5.4 Resolution Scaling
The 'Scaler' button on the front panel allows you to adjust the output resolution to match your display's capabilities or preferences.
- Opcions de resolució: Cycle through available output resolutions (e.g., 1080p, 720p) by pressing the 'Scaler' button.
5.5 Firmware Update & RS-232 Control
The Micro USB port on the rear panel can be used for firmware updates and serial control.
- Actualització del firmware: Connect the Micro USB port to a computer to update the device firmware as needed.
- Control RS-232: Use the Micro USB port with an appropriate RS-232 to USB cable and a serial command tool on your PC to send ASCII commands for device control.
Video 5.2: Official OREI product video demonstrating the features and functionality of the Quad Multi-Viewer HDMI Switcher.
6. Especificacions
| Model | HDS-401MV |
| Entrades | 4x HDMI |
| Sortides | 1x HDMI, 1x VGA, 1x 3.5mm Stereo Audio, 1x Optical (TOSLINK) |
| Compatibilitat amb HDMI | HDMI 1.4 |
| Compliment HDCP | HDCP 1.4 |
| Resolucions suportades | Fins a 1080p |
| Formats d'àudio | DTS Digital, Dolby Digital, LPCM, True HD/DTS-HD Master Audio (Pass-through 5.1, 7.1, 9.1) |
| Mètodes de control | Front Panel Buttons, IR Remote Control, RS-232 (via Micro USB) |
| Font d'alimentació | DC 5V/1A |
| Tancament | Metall |
| Pes de l'article | 1.5 lliures |
7. Solució De Problemes
Si teniu problemes, consulteu les solucions habituals següents:
- Sense sortida de vídeo:
- Ensure all HDMI/VGA cables are securely connected.
- Verify the power adapter is connected and the unit is powered on.
- Check if the correct input source is selected on the switcher and your display.
- Prova un altre cable HDMI/VGA.
- Test with a different display or source device to isolate the problem.
- Sense sortida d'àudio:
- Ensure audio cables (3.5mm or Optical) are correctly connected to your sound system.
- Check if the audio is muted on the switcher (tap the 'Audio' button).
- Verify your sound system is powered on and set to the correct input.
- Confirm the source device is outputting audio.
- El control remot no funciona:
- Ensure there are no obstructions between the remote and the switcher's IR receiver.
- Comproveu les piles del comandament a distància.
- Point the remote directly at the IR receiver window.
- Picture Quality Issues (Flickering, Distortion):
- Use shorter, high-quality HDMI cables (recommended under 10 feet).
- Try adjusting the resolution using the 'Scaler' button on the front panel.
- Ensure your source and display devices are compatible with the selected resolution.
8. Garantia i Suport
The OREI HDS-401MV HDMI Switcher comes with a 1 any de garantia completa from OREI. This warranty covers defects in materials and workmanship under normal use.
For technical support, troubleshooting assistance, or warranty claims, please contact OREI customer service:
- Correu electrònic: info@orei.com
- Contacte del fabricant: info@orei.com
- Packer Contact: info@fayzelectronics.com, 99250 12671
Si us plau, conserveu el comprovant de compra per validar la garantia.