The principle
CRMX (LumenRadio) carries a DMX universe over radio, in the 2.4 GHz band. It hops between frequencies to avoid channels used by Wi-Fi: that is what makes it reliable indoors and outdoors. A transmitter (TX) receives DMX over an XLR cable; receivers (RX), built into the fixture or in a box, output it.
Linking
- Set the transmitter to TX, on a universe colour.
- Start linking ("Link") with the receivers switched on and in range: they take the transmitter's colour.
- Receivers keep the link when switched off: redo it only if you change transmitter.
Several transmitters can work side by side, each with its receivers (one universe per transmitter).
With lighting software
CRMX doesn't replace the node: it extends one DMX port. With Halyx, the PC sends Art-Net or sACN to the node, a node port outputs DMX to the transmitter, and the linked fixtures receive the universe. The same universe can also go out on a cabled port.
Good habits
- transmitter up high, in sight of the fixtures, away from metal structures;
- check what receivers do on signal loss (cut out or hold the last value);
- turn RDM off on the transmitter's port if it doesn't pass it.
See also Wireless DMX with CRMX in Halyx and Network, nodes and firewall.