Decimator Design DMON-4S 4 x SD/HD/3G-SDI to HDMI Converter

Versatile Four-Channel SDI to HDMI Multiviewer and Converter
The Decimator Design DMON-4S is a compact and powerful solution for professional video workflows requiring multi-channel SDI to HDMI conversion. Featuring four SD/HD/3G-SDI inputs and four mini HDMI outputs, this unit functions as both a standalone converter and a multiviewer. Whether you're managing live production, video monitoring, or need real-time signal routing, the DMON-4S brings flexible output configurations with no external computer or dip switches required.

Flexible Output Options for Monitoring and Distribution
Each of the four mini HDMI outputs can independently display any of the SDI inputs or a quad-split view combining all four signals. This allows operators to simultaneously monitor feeds or route individual sources to different destinations. You can also configure the unit to output two HDMI signals while using the remaining SDI inputs as loop-throughs. For central monitoring, the DMON-4S can even output the same quad-split view across all four HDMI outputs.

Integrated Controls Without the Need for a Computer
A built-in LCD info screen and push-button interface give you full access to the DMON-4S settings directly on the unit. This is especially helpful in field environments where computers or external controllers are impractical. Adjust audio sources, switch output modes, assign SDI inputs, and manage multiview layouts all from the onboard control panel—no need to navigate menus through software.

Quad-Split Mode with Selectable Audio Routing
In quad-split display mode, the unit allows you to assign the audio from any of the four SDI inputs to be output across all HDMI channels. This is particularly useful when you need to monitor a specific source’s audio while viewing all four video feeds simultaneously. Whether you’re setting up video villages, post-production workstations, or live broadcast trucks, this audio flexibility enhances signal confidence and streamlining.

Supports Broadcast Formats and Custom Layouts
With support for 3G-SDI, HD-SDI, and SD-SDI, the DMON-4S automatically detects input signals and adjusts accordingly. The latest firmware adds support for 3G-SDI Level B and enables per-window horizontal and vertical flipping, customizable 8-channel audio metering, and user-defined UMD labels. You can transform the fixed quad-view layout into a fully custom 1-to-4 channel multiviewer that meets the specific needs of your workflow.

Compact Design with Secure Power and Firmware Upgradability
Built for professional environments, the DMON-4S includes a universal power supply with a threaded locking connector to prevent accidental disconnects during live sessions. It also supports USB firmware updates, ensuring your unit stays up to date with the latest features and enhancements. The rugged construction and portability make it ideal for use in flypacks, studios, or OB vans.

Ready for Any Production Workflow
From simple signal conversion to complex multiview monitoring, the DMON-4S handles it all with ease. It’s an excellent fit for AV integrators, field crews, and studio engineers looking for reliable and configurable video monitoring. With its robust feature set and intuitive interface, this unit helps reduce clutter, maximize control, and deliver consistent results in professional video systems.