1. Introduzione
Thank you for choosing the AVMATRIX SD1242-4K HDMI Splitter. This device is designed to distribute a single HDMI 2.0 input signal to four HDMI 2.0 outputs, supporting resolutions up to 4K@60Hz with RGB 4:4:4 color space. It features EDID management and dual power supply options (USB-C and DC) for versatile use in various professional and home environments.
2. Informazioni di sicurezza
- Assicuratevi chì u dispusitivu hè postu in una zona ben ventilata per prevene u surriscaldamentu.
- Ùn espone micca u dispusitivu à l'umidità, à a pioggia o à temperature estreme.
- Aduprate solu l'adattatore di alimentazione furnitu o una fonte di alimentazione cumpatibile.
- Avoid disassembling the unit; refer all servicing to qualified personnel.
- Mantene u dispusitivu luntanu da campi magnetichi forti.
3. Cuntenutu di u pacchettu
Verificate u pacchettu per i seguenti elementi:
- AVMATRIX SD1242-4K HDMI Splitter Unit
- Adattatore di putenza
- Cable USB Type-C
- Manuale d'uso (stu documentu)
4. Produttu Finituview
The AVMATRIX SD1242-4K is a compact and robust HDMI splitter designed for high-quality video distribution. It features one HDMI input and four HDMI outputs, allowing a single source to be displayed on up to four screens simultaneously.

Figura 1: Davanti è daretu view of the AVMATRIX SD1242-4K HDMI Splitter, showing HDMI input, four HDMI outputs, USB-C, and DC power ports.

Figure 2: The AVMATRIX SD1242-4K HDMI Splitter highlighting its HDMI 2.0 inputs/outputs and support for up to 4K@60Hz resolution for ultra-high-definition picture quality.
4.1 Features
- 1 HDMI 2.0 input to 4 HDMI 2.0 outputs.
- Supports resolutions up to 4K@60Hz (RGB 4:4:4).
- EDID management with Auto, Standard, Customize, and EDID Copy modes.
- Dual power supply: USB Type-C and DC 12V.
- Built-in OLED display for real-time status.
- Control via front panel buttons or PC software.
5. Setup
Follow these steps to set up your AVMATRIX SD1242-4K HDMI Splitter:
- Cunnette a fonte HDMI: Connect your HDMI source device (e.g., PS4, Blu-ray player, computer) to the HDMI IN port on the splitter using a high-quality HDMI 2.0 cable.
- Cunnette i schermi HDMI: Connect up to four HDMI display devices (e.g., HDTVs, monitors, projectors) to the HDMI OUT 1-4 ports on the splitter using high-quality HDMI 2.0 cables.
- Connect Power: Connect the provided power adapter to the DC 12V port on the splitter, or connect a USB Type-C cable to the USB-C port and a compatible USB power source. The device supports both power options.
- Power On: Ensure all devices (source, splitter, displays) are powered on. The splitter's OLED display will show its status.

Figure 3: Illustration of the AVMATRIX SD1242-4K HDMI Splitter distributing a single video source to four separate display screens, demonstrating its 1x4 distribution capability.
6. Operating Instructions
6.1 Gestione EDID
The SD1242-4K features EDID management to ensure optimal compatibility and performance between your source and display devices. You can configure EDID settings using the front panel buttons or the PC control software.

Figure 4: Comparison of a display without EDID management (left, showing potential compatibility issues) and with EDID management (right, showing seamless communication and optimal display).
There are four EDID modes available:
- Auto: The splitter automatically detects and selects the best EDID settings based on the connected displays.
- Standard: Uses a default, common EDID setting for broad compatibility.
- Personalizà: Allows users to upload a custom EDID file via PC software.
- Copia EDID: Copies the EDID from a specific output display (e.g., Output 1) to be used for all outputs.
6.2 Opzioni di cuntrollu
The device can be controlled via its front panel buttons or through dedicated PC software.

Figure 5: Demonstrates the two primary control methods for the AVMATRIX SD1242-4K: direct interaction with the front panel buttons and comprehensive control via PC software interface.
- Front Button: Use the buttons located on the front panel to navigate menus on the OLED display and adjust basic settings, including EDID modes.
- Cuntrollu di u Software di PC: Connect the splitter to a computer via its USB port. Install the AVMATRIX control software to access advanced settings, customize EDID, and monitor device status.
6.3 Opzioni di alimentazione
The SD1242-4K offers flexible power options for convenience.

Figure 6: Illustrates the dual power supply capabilities of the AVMATRIX SD1242-4K, showing both the traditional DC power input and the modern USB Type-C power input.
- Alimentazione DC: Use the included 12V DC power adapter for stable and continuous power.
- USB Type-C Power Supply: For portability or when a DC outlet is unavailable, power the device using a standard USB Type-C cable connected to a compatible USB power source (e.g., power bank, computer USB port).
7. Mantenimentu
- Pulizia: Aduprate un pannu dolce è asciuttu per pulisce l'esternu di u dispusitivu. Ùn aduprate micca detergenti liquidi o aerosol.
- Conservazione: Quandu ùn hè micca adupratu per periodi prolungati, cunservate u dispusitivu in un locu frescu è asciuttu, luntanu da a luce diretta di u sole.
- Actualizazioni di firmware: Verificate l'ufficiale AVMATRIX websitu periodicamente per aghjurnamenti di firmware per assicurà prestazioni è cumpatibilità ottimali.
8. Risoluzione di prublemi
If you encounter issues with your AVMATRIX SD1242-4K, refer to the following common problems and solutions:
| Prublemu | Causa Possibile | Soluzione |
|---|---|---|
| Nisuna uscita video nantu à i schermi. | Loose HDMI cables, incorrect EDID setting, power issue. | Check all HDMI cable connections. Ensure the splitter is powered on. Try different EDID modes (Auto or Standard). Test with a different HDMI source or display. |
| Video flickering or unstable image. | Poor quality HDMI cables, signal interference, EDID mismatch. | Use certified high-speed HDMI 2.0 cables. Ensure cables are not excessively long. Adjust EDID settings. Reduce cable length if possible. |
| Displays show different resolutions. | EDID setting not optimized for all displays. | Use EDID Copy mode from the lowest resolution display or a custom EDID that all displays can support. |
| U dispositivu ùn accende micca. | Power adapter not connected, faulty power source. | Verify power adapter is securely connected to both the splitter and a working power outlet. Try the USB-C power option if DC fails, or vice-versa. |
9. Specificazioni
| Feature | Detail |
|---|---|
| Mudellu | SD1242-4K |
| Input Video | 1x HDMI Type A |
| Output Video | 4x HDMI Type A |
| HDMI Standard | HDMI 2.0 |
| Risoluzione massima | 4096x2160p 60/59.94/50/30/29.97/25/24/23.98 |
| Color Space & Precision | RGB 4:4:4 8 bit, YUV 4:2:2 8 bit, YUV 4:4:4 8 bit |
| Alimentazione elettrica | DC 12V / USB-C |
| Cunsumu d'energia | 6W |
| Voltage Range (USB) | USB 5V-5.5V |
| Voltage Range (DC) | DC 5.5V-24V |
| Dimensioni (LWD) | 125.5 x 104 x 24.5 mm |
| Pesu Net | 471 g |
| Temperature di funziunamentu | -20 ° C ~ 60 ° C |
| Temperature di almacenamiento | -30 ° C ~ 70 ° C |
10. Garanzia infurmazione
AVMATRIX products are covered by a limited warranty against defects in materials and workmanship. The warranty period typically begins from the date of purchase. Please retain your proof of purchase for warranty claims. For specific warranty terms and conditions, refer to the warranty card included with your product or visit the official AVMATRIX websitu.
This warranty does not cover damage caused by improper installation, accident, misuse, abuse, natural disaster, or unauthorized modification of the product.
11. Assistenza Clienti
If you require further assistance or have questions not covered in this manual, please contact AVMATRIX customer support:
- Websitu: www.avmatrix.net (for product information, drivers, and firmware updates)
- E-mail: Riferite à l'ufficiale websitu per indirizzi email di supportu specifici.
- Telefonu: Riferite à l'ufficiale websitu per i numeri di cuntattu regiunale.
When contacting support, please have your product model (SD1242-4K) and a detailed description of your issue ready.





