What is RDM in DMX Systems: How It Works and Why It’s Needed in Practice

In the fast-paced world of stage lighting, where reliability can make or break a performance, True DMX ports are a critical feature on devices like DMX splitters, nodes, and controllers. These ports, often labeled distinctly on professional equipment, ensure robust signal distribution in complex lighting networks. This article explores what True DMX ports are, how they function, and why they are essential for building resilient DMX networks in theater, concerts, and live events.

Neutrik’s powerCON line is a series of professional power connectors designed by the Swiss company Neutrik for the show industry, stage equipment, architectural lighting, and A/V installations. They far exceed regular household connectors in terms of reliability, safety, and installation ease.

In the fast-paced world of theatrical and live event production, a reliable lighting control system is the foundation of a seamless performance. This article dives into a sophisticated setup deployed in a modern concert hall, where the front-of-house (FOH) technical room and stage are bridged by a network of GigaJet Pro DMX/Ethernet converters. Designed for professionals who demand precision and flexibility, this system leverages fiber optic technology and advanced features to manage complex lighting designs with confidence.

In live theater, lighting does more than illuminate—it sets the mood, directs audience focus, and enhances the narrative. A reliable lighting control system is critical, and this setup, powered by Sundrax’s GigaJet20 Pro, delivers exceptional reliability, flexibility, and safety for professional productions. Designed for lighting designers, stage managers, and technicians, it ensures seamless performance in high-pressure environments.

Lighting in public parks ensures safety while enabling dynamic visual effects for daily use, seasonal themes, and special events. This system design outlines a robust, scalable lighting control infrastructure for outdoor park environments, integrating functional illumination with programmable effects.

All control signals are integrated into the GigaJet Pro, which employs merging technology with automatic priority management and data backup functions.
DMX and RDM data are transmitted over optical fiber to a second GigaJet Pro, and then to a third GigaJet Pro, enabling the connection of all equipment and the transmission of multiple DMX universes over long distances.

Modern theatres demand exceptional quality, unwavering reliability, and versatile lighting equipment. To manage lighting systems, ensure synchronized data transmission, and maintain performance in dynamic stage conditions, one must use solutions tailored to the theatre's unique architecture. Sundrax offers a full suite of devices, each engineered for specific areas — from technical rooms to mobile stage decor.

In lighting design, beautiful results depend on invisible infrastructure. Behind every stable ArtNet-controlled show or façade lies one critical component: the switch. A dedicated ArtNet switch is more than just a networking tool - it’s the backbone of your lighting data distribution.

While many installations begin with generic IT switches, large-scale or latency-sensitive lighting systems benefit enormously from equipment designed specifically for real-time control protocols like ArtNet and sACN.

In large-scale installations like architectural lighting, city infrastructure, or retrofits, running separate DMX signal lines is not always practical or cost-effective. That’s where DMX over power line technology offers a smart alternative – allowing you to transmit DMX512 control data using the same 110/220V power cables already in place.

This method is actively used by Sundrax in its PowerGate product line, delivering reliable, real-time control without extra cabling.

Lighting control in architectural and entertainment environments often involves two dominant but very different protocols: DMX512 and DALI. While DMX is preferred for dynamic, fast-changing effects, DALI excels in commercial and architectural settings where smooth dimming, status feedback, and group control are essential.

In modern architectural and stage lighting installations, where long-distance signal transmission and immunity to interference are critical, fiber-optic lines provide a powerful alternative to traditional copper-based DMX wiring. Sundrax offers dedicated solutions that enable stable and scalable DMX over fiber in real-world applications.

In the world of dynamic lighting design, nothing offers more visual impact than addressable pixel-based systems. From animated façades to immersive stage backdrops, the ability to control each pixel individually opens the door to stunning motion effects, gradients, and color sequences.

As modern lighting moves toward immersive visual design, addressable LED pixels have become essential for media façades, creative stage effects, and interactive installations. At the center of these systems is the ArtNet pixel controller – a device that receives network-based control data and distributes it precisely across thousands of individual LEDs.

With the increasing scale of lighting installations, the need for convenient management and diagnostics grows. This is where the RDM protocol comes to the rescue—a standard that enhances DMX with the capability of two-way communication. We discussed with an engineer from Sundrax Aleksandar Nikolic how RDM works and how it helps technicians save time during installation and maintenance.

When it comes to critical facilities—such as theaters, public buildings, tunnels, or architectural facades—a failure in the lighting control system can lead to serious consequences. We spoke with an engineer from Sundrax Alex Chomsky about how to properly implement emergency lighting scenarios based on DMX and what to consider for reliable operation in emergency situations.

In professional environments, DMX controllers are pivotal for managing lighting—whether for architectural illumination, theater stages, or urban landscapes. Their stability is critical, and the presence of a reset button on the controller’s casing may seem trivial but is, in fact, a warning sign of potential flaws in the device’s design.

DMX systems are widely used in stage lighting to control lighting devices with precision. However, when setting up these systems, mistakes are often made that can cause malfunctions or even equipment failure. In this article, we’ll explore the seven most common mistakes when connecting DMX systems and share practical tips on how to avoid them

Modern architectural and street lighting has evolved far beyond simple timer-based systems. Today, thanks to GSM and GPS technologies, it’s possible to not only control lighting remotely but also adapt it in real time to specific conditions, scenarios, and events. In this article, we’ll explore how this works in practice—using the example of the MONARQ system from Sundrax.

As the number of fixtures in DMX networks increases, the load on the line grows, raising the risk of failures and signal loss. Incorrect distribution can lead to erratic operation or complete equipment failure. We consulted with an engineer from Sundrax Alex Chomsky to learn how to properly design a DMX network for large-scale projects.

Architectural lighting is more than just illumination—it’s a powerful tool that brings buildings to life. Through color, brightness, contrast, and seamless transitions, it crafts mood, highlights intricate details, and accentuates form. At the heart of this expressive art lies dimming—not merely a way to adjust brightness but a method to transform the perception of color and the atmosphere of any space.

A correctly selected dimmer is the foundation of a stable and long-lasting lighting installation. We asked a Sundrax engineer Alex Chomsky to explain the difference between the main types of dimmers and how to choose the right one depending on the task.

In professional DMX installations, dozens or even hundreds of luminaires, controllers, splitters, and amplifiers are connected in a shared network through which the signal is transmitted. But what happens if a high-voltage surge ⚡️, for example, due to a short circuit, connection error, or even during a thunderstorm, enters one of the sections? Without galvanic isolation, such failures can damage or destroy all equipment across the network.

Digital control of architectural lighting is becoming an integral part of urban infrastructure. This article highlights the key technologies transforming the industry, according to Sundrax engineers. These are not mere predictions but specific directions already being implemented in modern projects.

Lighting today is far more than just lamps—it encompasses complex digital systems. To control lighting fixtures, various communication protocols are employed. Using Sundrax equipment as a reference, we will examine three popular options: DMX512, ArtNet, and sACN. Each protocol has distinct features, advantages, and limitations. Which is best suited for your project? Let’s explore with a Sundrax engineer.

Explore PowerGate, transmitting DMX512 over 110/220V powerlines for architectural, theatrical, and radio-restricted lighting control.

Explore the art and spirituality of church lighting, blending architecture, reverence, and modern technology for sacred spaces.

Sundrax’s MONARQ Mini offers wireless, heritage-friendly lighting for churches. Non-invasive, DMX-controlled, perfect for sacred spaces.

Explore our range of wireless DMX devices for stage lighting, including RadioGate, RadioGate Plus, and LEDGate. Reliable, flexible, and easy to use.

Discover beDMX, Sundrax’s patented Bluetooth 5 based protocol, for reliable wireless DMX512 and RDM transmission. Explore its applications in theater, concerts, and more.

Learn how triggers in Sundrax ArtGate DMX Ethernet converters automate lighting control, enhance safety, and simplify management for various applications.

Master the essentials of DMX lighting control from a professional engineer's perspective. Learn proper setup techniques, troubleshooting methods, and how Sundrax's PixelGate and LEDGate controllers offer cost-effective solutions for both addressable and non-addressable LED installations.

Explore the world of professional DMX lighting control with Sundrax PixelGate controllers. Learn about system setup, troubleshooting, and advanced techniques for controlling LED lights in venues from small clubs to major productions, with cost-effective solutions that convert Art-Net to SPI protocol.

Explore how professional DMX splitters transform complex stage lighting setups. Learn about practical applications, redundancy benefits, and advanced features of the Splitter Selective Pro with its 9 outputs, RDM compatibility, and flexible operating modes for theaters, concerts, and touring productions.

Discover why proper DMX signal splitting is crucial for reliable stage lighting. Learn about common mistakes, the "32 fixture rule," and how the Splitter Selective Pro provides professional solutions with RDM compatibility, galvanic isolation, and flexible configuration options.

Discover the next-generation Professional DMX Splitter Selective Pro 2025 – an 11-port DMX splitter featuring 2 master ports and 9 outputs with RDM support, galvanic isolation, and flexible configuration modes.

2025 ultimate guide according to Art-Net protocol. Protocol versions and how to use it in lighting. All the pros and cons of working with Art-Net.

Troubleshooting DMX Connections: Common Causes of Signal Drops. How to Fix

Find out how to integrate incandescent and halogen lamps into a DMX-controlled lighting system using specialized dimmer units for stable and reliable performance.

Discover why incandescent and halogen lamps flicker at low brightness levels and how professional theatrical dimmers can ensure smooth dimming.

Learn why incandescent and halogen lamps change color temperature when dimmed and how to maintain stable lighting using high-frequency stage dimmers.

Flickering LED strips can be a major issue on a professional stage, disrupting the desired atmosphere and causing discomfort to the audience. Stage engineers often encounter this problem and seek effective ways to solve it.

Optimal choice of DMX converter and Ethernet protocol for stage lighting control. Learn about the main technologies, advantages and selection criteria.

Digital Multiplex, is a standard for digital communication networks that are commonly used to control stage lighting and effects. Frequently asked questions (FAQ)

For implementing large-scale lighting projects such as concert venues, theatrical productions, or architectural illumination, it often becomes necessary to deploy numerous lighting fixtures. The standard DMX512 protocol has limitations on the number of devices that can be connected to a single line. When connecting many devices to one line, the signal weakens, leading to distortions and data loss. To solve this problem, DMX splitters are used, allowing for more fixtures to be connected and complex lighting compositions to be created.

LED pixel controllers unlock boundless possibilities for creating unique light installations – from stage lighting to festive decorations. Light is a crucial part of artistic expression that complements reality, creates accents, and has every opportunity to transform any space into a work of art. LED pixel controllers allow lighting artists to achieve incredible precision and detail in creating light effects.