Professional Entertainment Lighting control Solutions

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Entertainment

MONARQ

QULON

RTTrPL

KiNet

sCAN

DMX RDM

Wireless DMX Transmission

Bluetooth DMX

beDMX Wireless Protocol

DMX 512 over powerline 110\220

Wireless Lighting Solutions

Lighting Solutions for Cathedrals

Lighting Solutions for Churches

DMX Ethernet converters

DMX Triggers Controll

Guide

DMX Controllers for LED

LED Lights

ArtNet

Connected to multiple lighting fixtures

DMX splitter

Solving DMX Issues

Control Incandescent Lamps via DMX

Brightness Levels

Lamps Flicker

What to Do with lighting

Color Temperature

DMX Dimming

DMX over Ethernet

DMX Frequently Asked Questions

<div class="raw-html-embed"><ol>
 <li>
 <a href="#referens1">Three Dimming Methods: In Brief</a>
 </li>
 <li>
 <a href="#referens2">Phase Dimming (Leading/Trailing Edge)</a>
 </li>
 <li>
 <a href="#referens3">How to Choose the Right Dimmer</a>
 </li>
 <li>
 <a href="#referens4">Recommendation from the Sundrax Engineer</a>
 </li>
</ol>
</div>

Tables of Contents

Controls the power delivered to the lamp by chopping part of the AC sine wave. Used with incandescent lamps, halogens, and some LEDs.<ul style="list-style-type:disc;"><li>Good for traditional lamps and older systems.</li><li>May cause flicker with LEDs or transformer noise. ⚠️</li></ul>PWM (Pulse-Width Modulation) The dimmer works with DC and controls brightness by switching on/off at high frequency. Mainly used with LED sources and drivers that support a PWM input.<ul style="list-style-type:disc;"><li>High stability and excellent compatibility with modern fixtures. ✔️</li><li>Requires specific circuitry and driver compatibility.</li></ul>0–10 V (Analog Dimming) The dimmer supplies a control voltage from 0 to 10 V to the fixture’s driver. Brightness depends on the signal level.<ul style="list-style-type:disc;"><li>Simple implementation; an industry standard in architectural projects. 🏛️</li><li>Requires high-quality shielded cables; may be susceptible to interference.</li></ul>

Trailing-edge dimmer circuit board close-up 

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<div class="raw-html-embed"><h2 id="referens1">
 Three Dimming Methods: In Brief
</h2></div><div class="raw-html-embed"><h3 id="referens2">
 Phase Dimming (Leading/Trailing Edge)
</h3></div>

Type of Light Source✅ Incandescent, halogen → phase dimmer.⚠️ Modern LED → PWM or 0–10 V, depending on the driver type.Dimming Quality Requirements✔️ For flicker-free, precise control → PWM is best. 🌟System Scale🏛️ For centralized installations (offices, facades) → 0–10 V is often preferable. 🏢Equipment Compatibility⚠️ Check the driver or fixture documentation → it must support the desired control method. 📘

PWM signal graph showing duty cycle variations 

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<div class="raw-html-embed"><h3 id="referens3">
 How to Choose the Right Dimmer
</h3></div>

<blockquote>There is no one-size-fits-all dimmer. First determine the type of fixture and dimming scenarios. If the project is large, it’s best to discuss it in advance with the equipment manufacturer or an engineer to avoid issues with flicker, incompatibility, and **overheating.🔍</blockquote>If you are unsure which solution to choose, our specialists will help you select the optimal combination of dimmers and drivers for your specific project. 🤝Contact the Sundrax engineer: &nbsp;<a href="https://entertainment.sundrax.com/contacts">Contact Us</a>&nbsp; 📩

<div class="raw-html-embed"><h2 id="referens4">
 Recommendation from the Sundrax Engineer
</h2></div>

A correctly selected dimmer is the foundation of a stable and long-lasting lighting installation. We asked a Sundrax engineer (name to be added later) to explain the difference between the main types of dimmers and how to choose the right one depending on the task. 🛠️

Phase dimming waveform illustrating chopped AC sine wave 

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

How to Choose the Right Dimmer: Comparison of Phase, PWM, and 0–10 V ⚡

<div class="raw-html-embed"><ol>
 <li>
 <a href="#referens1">What is Galvanic Isolation? 🔌</a>
 </li>
 <li>
 <a href="#referens2">Where Galvanic Isolation is Applied 📡</a>
 </li>
 <li>
 <a href="#referens3">What Sundrax Engineers Recommend 💡</a>
 </li>
 <li>
 <a href="#referens4">Sundrax Engineer’s Opinion 🗣️</a>
 </li>
</ol>
</div>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.We spoke with a Sundrax engineer <a href="https://www.linkedin.com/in/alex-chomsky-2a37b6311/">Alex Chomsky</a> about how galvanic isolation works in DMX networks, why it’s essential, and where it must be implemented without fail.

Galvanic isolation is the electrical separation of connected devices while preserving signal transmission. In DMX networks, it is typically achieved using optocouplers (optical isolators) or transformers embedded in splitters, amplifiers, or interface modules.<div class="raw-html-embed"><h3 id="referens2">
 Where Galvanic Isolation is Applied 📡
</h3></div><ul style="list-style-type:disc;"><li>DMX Splitters: Each output is galvanically isolated, preventing short circuits from spreading across the network.</li><li>DMX-USB Interfaces: Galvanic isolation between the computer and the DMX network reduces the risk of PC damage.</li><li>Ethernet–DMX Transceivers (ArtNet, sACN): These protect the digital network from electrical surges traveling through lighting cables.</li></ul>

<div class="raw-html-embed"><h2 id="referens1">
 What is Galvanic Isolation? 🔌
</h2></div>

Without galvanic isolation, the entire DMX signal relies on a single ground. A voltage surge ⚡️ (even between two power phases on a stage) can create a potential difference that may damage or destroy interface equipment. This is especially critical for long cable runs or when power is drawn from different distribution boards.<h4>Example 📌</h4>One of Sundrax’s clients used a splitter without galvanic isolation for facade lighting. When a power supply fault occurred in one section, not only the end devices but also the controller inside the building failed. After upgrading to the Splitter Selective with full galvanic isolation, the problem was resolved. ✅ &nbsp;

Autonomous DMX network controlling architectural lighting on a building facade 

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Why It Matters ⚠️

<ul style="list-style-type:disc;"><li>Use splitters with galvanic isolation on every output (e.g., Splitter Selective Pro, Splitter Duo DIN).</li><li>Implement interface modules with optical isolation.</li><li>Avoid ground loops between different sectors of the installation.</li><li>Separate power and DMX networks in large-scale projects.</li></ul><div class="raw-html-embed"><h2 id="referens4">
 Sundrax Engineer’s Opinion 🗣️
</h2></div><blockquote>We always recommend incorporating galvanic isolation in splitters. It’s a cost-effective protection against losses that can cost tens of times more. This is especially crucial for outdoor or distributed installations. 🏞️</blockquote>If you’re unsure where or how to integrate galvanic isolation in your DMX system, Sundrax engineers are ready to help you select equipment and design a connection scheme with protection for all critical components. 🛠️<a href="https://entertainment.sundrax.com/contacts" target="_blank" rel="noopener noreferrer">Contact us to request a consultation</a> 📩 &nbsp;

<div class="raw-html-embed"><h2 id="referens3">
 What Sundrax Engineers Recommend 💡
</h2></div>

Stage lighting setup with DMX controllers and galvanic isolation modules 

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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.

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DMX Connection Diagram

Dual-zone optically isolated DMX splitter RDM hub for DIN rail installation Sundrax Entertainment

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Enhance your lighting controls with the Splitter Duo DIN – a cutting-edge, two-channel DMX/RDM splitter designed to deliver flawless signal integrity for a remarkable lighting experience.<h3>Seamless DIN Rail Integration</h3>Conveniently mountable on a DIN rail, the Splitter Duo DIN provides the perfect harmony of form and function for your lighting system. Engineered to fit into compact spaces, it effectively conserves space while maximizing your control capabilities.<h3>Dependable Performance in Any Setting</h3>Boasting a robust laser-etched aluminum housing, this indispensable device ensures continuous operation even at voltages reaching up to 305 V. Whether indoors or within sheltered outdoor enclosures, you can count on the Splitter Duo DIN to consistently manage your lighting network with unwavering precision.

Splitter Duo DIN ArtGate DIN SwitchGate DIN

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Professional Remote Device Management Converter

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All relevant industry-standard protocols such as DMX512 and RDM are supported

Splitter Duo DIN

Professional Signal Splitting and Management Interface

Mechanical

Power & Electrical

Environment

Control / Data Connections

Inputs / Outputs

Configuration / Indication

Package Contents

Product Overview

The Splitter Selective Pro is a two-channel DMX512 signal distributor with full RDM protocol support and represents an effective solution for controlling lighting equipment that uses the DMX512 standard.The device features 2 input and 9 output DMX ports and can operate in single or dual-channel mode, distributing one or two independent DMX streams respectively. In single-channel mode, the DMX stream from the first input port (A) can be distributed to 10 output ports. In dual-channel mode, DMX streams from 2 input ports (A and B) can each be distributed to 9 output ports with the ability to select the input signal source for each output port.Splitter Selective Pro has intelligent indication, displaying the presence and dynamics of the DMX stream separately for channels A and B, as well as the presence of RDM interface signals (ANSI E1.20). The distributor provides automatic detection of operating modes.The device is designed in a case for installation in a 19-inch rack, occupying only one rack unit (1U).&nbsp;<ul style="list-style-type:disc;"><li>5000V galvanic isolation on all ports with TVS diode protection</li><li>Zero-latency signal processing to prevent timing desynchronization</li><li>Standard 1U rack mount design (482 x 44 x 110 mm)</li><li>PowerCON TRUE1 power connector with universal AC input (100V-277V, 50/60Hz)</li><li>Optional DC power (9V-36V) for mobile applications</li><li>Available with XLR5, XLR3 connector configurations</li></ul>The Splitter Selective Pro can be used at positive temperatures in indoor and covered outdoor venues.

Splitter Selective Pro rear panel showing XLR connectors, toggle switches for operating modes, and PowerCON TRUE1 power connector

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Splitter Selective Pro. Professional DMX Splitter with RDM Support

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Splitter Selective Pro front panel with LED indicators and toggle switches for DMX channel assignment

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Close-up of Splitter Selective Pro intelligent LED indicators showing different status signals for DMX data transmission and RDM frame detection

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Splitter Selective Pro, (3-pin)

Splitter Selective Pro, (5-pin)

Rack mountable professional, dual-channel DMX512 splitter/booster with full RDM protocol support

Physical Parameters

Power and Consumption

Physical Characteristics

Data Transmission Protocols

Setup / Indicators

Splitter Selective Pro

Galvanic Isolation in DMX Networks — Equipment Protection and Signal Stability | Sundrax 🛡️

#solving-dmx-issues

How to Choose the Right Dimmer: Comparison of Phase, PWM, and 0–10 V ⚡

Galvanic Isolation in DMX Networks — Equipment Protection and Signal Stability | Sundrax 🛡️