Cat6A is a cable category, not a guarantee that every lighting or audio device will work together. Compatibility depends on the ports, protocol support, network design and, for traditional DMX, the interface between Ethernet and DMX. This guide sets out a practical way to choose and test cabling for UK venues, touring rigs and event systems. For equipment-specific settings, follow the current guidance from ETC Support and Audinate's technical documentation.
First, distinguish DMX from network protocols
DMX512 is a serial control protocol. A Cat6A cable does not turn it into Ethernet or make a standard network port a DMX port. To carry DMX over an Ethernet network, use compatible lighting equipment or nodes that send and receive Art-Net or sACN, then connect the node's DMX output to DMX fixtures with suitable DMX cabling. A purpose-built RJ45-to-DMX extender is a different kind of link: use it only with its matching sender/receiver arrangement and wiring instructions, not as an ordinary Ethernet connection.
Art-Net and sACN carry lighting data over IP networks. Dante carries audio over IP between compatible Dante devices. Cat6A can provide the physical Ethernet link for these systems, but the cable alone does not establish protocol compatibility. Confirm that every device, port and intermediary switch supports the intended protocol and configuration.
Where Cat6A fits
Cat6A is a useful option where equipment calls for twisted-pair Ethernet cabling and you want an installation or touring cable built to that category. It is not automatically required for every Art-Net, sACN or Dante link. Match the cable, connector and link speed to the equipment manuals and the design of the network. In particular, do not assume a cable label proves that an assembled lead or installed channel has been tested or certified to a particular standard.
Shielding and stage interference
Stages and venues can put data cabling close to mains power, dimmer circuits, motors, LED power supplies and other sources of electrical noise. Consider a shielded cable where the equipment and installation design call for it, and make sure connectors, panels and earthing arrangements are suitable for that shield. Shielding is not a substitute for correct installation, and an incorrectly bonded screen can introduce its own problems. Follow the cable and equipment manufacturers' instructions rather than applying a blanket grounding rule.
Route data and power separately where practical. Avoid long parallel runs beside power or dimmer cables; where routes must cross, crossing at roughly a right angle can reduce the length of the shared path. Protect touring leads from crushing, sharp bends, strain and wet conditions, and keep connectors clean and securely mated. If a link behaves intermittently, inspect the route and terminations as well as checking network settings.
Run length: plan each link, not just the whole route
Ethernet links have distance limits that depend on the cable, data rate, connectors and active equipment. A common structured-cabling design uses a 100 m channel as its maximum, but that figure is not a promise for every product, temporary touring lead, or non-Ethernet DMX extender. Check the specifications for the devices and cable you are using, and count each switch-to-device link separately. For a longer route, plan an appropriate switch or other supported link extension rather than assuming one continuous cable will work.
Dante system timing and network design also depend on the devices and network path. Use Audinate's current design guidance and the equipment manuals to choose supported link speeds, switch configuration and latency settings. Do not rely on a single generic cable-length or switch-hop figure for every Dante system.
Connector choices
Standard RJ45 is common on network equipment and is often appropriate in protected rack or fixed-installation locations. For touring and event use, a locking, ruggedised RJ45 connector system such as EtherCon can help protect the connection from accidental knocks and strain. Check the connector shell and cable plug are compatible, and remember that a rugged housing does not change the network protocol or extend its specified link distance.
For example, compare our Van Damme TourCat Cat6A cable assembled with Neutrik EtherCon with the Netflex Cat6A cable with Rean EtherCon. Choose based on the cable construction, connector compatibility and the demands of your setup, then check the specific product details before ordering.
For a conventional DMX run to a fixture, use an appropriate DMX cable and connection, such as our 5-pin XLR DMX/AES cable where it suits the equipment. If you are using the 4-channel RJ45-to-XLR extender, follow its product instructions and use the matching endpoints; do not treat that connection as a general-purpose Ethernet cable run.
Protocol-specific checks
- DMX: Confirm the console or node provides the required DMX output, use the correct DMX cable and connector, and follow the equipment guidance for the line and termination.
- Art-Net: Confirm addressing and universe settings on the console and receiving nodes. Check how the system handles broadcast or unicast traffic, and configure switches as specified by the lighting and network equipment manufacturers.
- sACN: Confirm universe and multicast settings across the source, network and receivers. Where switches are used, follow their guidance and the lighting-system design for handling multicast traffic.
- Dante: Confirm every intended device is Dante-enabled and that the network links and switch configuration meet Audinate's current requirements for that system. Check routing and status in Dante Controller before the show.
Keep lighting and audio traffic separated when the system design or manufacturer guidance calls for it. If they share network equipment, plan and configure that network deliberately; plugging everything into an arbitrary switch is not a compatibility strategy.
When to test
Test before the first show, after changes to the cable route or network, and whenever a connection is replaced or starts behaving unexpectedly. For a touring kit, inspect each lead and check continuity and the correct wiring with a suitable tester. Then test the complete system with the actual console, nodes, switches and endpoints: confirm links come up, devices appear, lighting data reaches the intended fixtures, and Dante devices are visible and routed as expected.
For fixed installations, agree the test and handover requirements with the installer or client. If formal cabling certification is required, use an appropriately rated tester and a qualified person, and retain the results. Do not describe a cable or installation as certified unless the relevant testing has actually been completed and documented.
When troubleshooting, change one thing at a time: check connectors and cable condition, verify link status and device settings, then review addressing, universes, multicast or audio routing. Consult the current ETC, Audinate and equipment-manufacturer documentation for the specific products in the system.
Quick takeaway
Cat6A may be a suitable Ethernet cable for Art-Net, sACN and Dante when the connected devices and network are designed for those protocols. Traditional DMX needs DMX-capable ports or a purpose-built interface, not just Cat6A. Choose shielding and connectors for the environment, plan each link within the equipment specifications, and test the whole signal path before relying on it live.