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Set Up Art-Net and sACN Output

Wire a lighting network, add an output, and get DMX to real fixtures over Art-Net or sACN.

Art-Net and sACN both carry DMX512 over a standard Ethernet network. A single cable carries many universes over the switches and cabling you already run. The steps below wire a network and configure an output. Before you start, read Output. It explains what a universe is, how patch numbers map to the wire, and why the two protocols count universes differently. The steps here do not repeat that model.

The Outputs dialog page has a full reference for every field.

Wire the network and set an IP

Connect your computer and every Art-Net or sACN node to the same Ethernet switch, then power the nodes on. For stable output, use wired Ethernet instead of Wi-Fi.

Put the machine and the nodes on the same subnet. Lighting networks commonly use a flat range such as 2.x.x.x or 10.x.x.x with a wide netmask:

  1. Open System Settings > Network and select your Ethernet interface.
  2. Set Configure IPv4 to Manually.
  3. Enter an address such as 2.0.0.1 and a subnet mask of 255.0.0.0.
  4. Apply the change.
  5. In each node's own configuration tool, give the node an address in the same range.

A wide netmask matters for Art-Net broadcast, because Spectralite derives the network's broadcast address from the interface address and mask. With the correct mask, broadcast reaches the whole subnet.

Add or select an output

Open Edit > Outputs. A new project ships with one Art-Net output enabled, so a node on the same network is often all you need. To add another, click Art-Net or sACN at the top of the output list. Each entry sends one protocol. Several entries can run at once. A rig can then use two protocols in parallel or feed a primary and a backup path.

Select the output in the list to edit it on the right. If you run more than one output, give each a recognizable Name.

Bind the network interface

Set Network Interface to the card that reaches your lights. If you leave it on Default (System), the operating system chooses. That works on a machine with one interface but is unreliable when several networks are present. On a machine with several interfaces, pick the exact interface. Output then leaves the right card, and Art-Net broadcast uses that card's subnet.

If the chosen interface is offline, the output waits and starts sending once the interface reconnects.

Choose how the output reaches the network

Art-Net offers two delivery modes under Network Mode. sACN has no mode selector. It always uses multicast.

  • Unicast (the Art-Net default) sends each universe only to the fixtures that need it. This keeps a busy or shared network from flooding every device.
  • Broadcast sends one burst per frame to every device on the subnet. It needs no per-fixture addressing and suits a small, dedicated lighting network.

You set unicast destinations per fixture. Each fixture carries its own Target IP in the Fixtures panel, and Spectralite sends a universe only to the fixtures that asked for it. A fixture with no target set receives nothing in unicast mode. The target field suggests the nodes found by the Art-Net Nodes panel, so you can fill it from one.

sACN relies on multicast. For sACN packets to reach their destinations, a managed switch usually needs an IGMP querier. Without one, the switch drops the traffic before it arrives.

Send a frame and confirm

  1. Patch a fixture at the universe and address that the node expects.
  2. Add an effect layer.
  3. Raise its opacity.

The fixture should respond. If it stays dark, confirm that the fixture's master dimmer is up (many moving heads default their dimmer to 0). Then work through Troubleshooting.

To watch for Spectralite's own nodes on the network, open the Spectralite Controllers panel. Discovered nodes appear there. For third-party Art-Net nodes, the Art-Net Nodes panel lists what answered discovery.

Fine-tuning the output

The remaining controls narrow or realign what a working output sends.

Universe range filter

By default, an output transmits every patched universe. To restrict it to a span, turn on Universe range filter and enter the span as 1-based patch universes. The filter applies to the patch universe before any offset. You can split universes across two outputs, for example one output for the first block and another for the rest. The traffic of each block then stays on the interface it belongs on.

Universe offset

Universe Offset shifts every universe an output sends up or down by a fixed amount. A new output already carries the correct default for its protocol (0 for Art-Net, 1 for sACN), so most shows never touch it. Change it only to line up with a receiver that numbers its universes differently from Spectralite's default. The editor shows a live preview of where each universe lands and flags a mapping the protocol cannot carry. Output explains the universe model in full, and why the offset is for third-party alignment only.

ArtSync

With ArtSync Frames on (the Art-Net default), Spectralite sends an ArtSync packet after each frame so receivers commit multi-universe updates at the same instant. Leave it on unless a receiver misbehaves with sync. For a fixture that only latches sync on the limited broadcast, turn on the Limited-broadcast ArtSync sub-option. It sends the sync packet to 255.255.255.255.

sACN source settings

An sACN output adds a few fields of its own. Source Name and the auto-generated Component ID (CID) identify the source to receivers. Priority (0 to 200, default 100) decides which source wins when several target the same universe. Preview mode marks the feed as a dry run so receivers do not drive live output from it. A Synchronisation universe, the sACN equivalent of ArtSync, makes receivers commit multi-universe frames together. The Outputs dialog reference describes each field.