Data Network Requirements - Martin RUSH CS Series User Manual

Data network requirements

The DMX lighting controller connects to the RUSH® CS Series PSU using the 5-pin XLR plug. Further
DMX equipment may be connected using the 5-pin XLR socket.
The following considerations must be taken into account when laying out the data network:
•
512 DMX channels are available in a single DMX universe. Each time the combined channel
requirements of a group of connected fixtures exceeds 512, an additional DMX universe will be
required.
•
You can reliably connect up to 32 fixtures in a single daisy chain.
•
Use RS-485 data cable. RS-485 cable has low capacitance and a characteristic impedance of 85 to
150 Ohms. It is electrically shielded and has at least 1 twisted pair of conductors. The minimum
recommended wire size is 0.25 mm2 (24 AWG) for runs up to 200 meters (1000 ft.) and 0.32 mm2
(22 AWG) for runs up 500 meters (1640 ft.).
•
Branches may be added to the link using an opto-isolated splitter. Use an RDM-compatible amplifier-
splitter such as the Martin® RDM 5.5 Splitter. Each branch may itself connect up to 32 fixtures.
•
An RDM amplifier may also be used to extend a network beyond 500 meters (1640 ft.) or to connect
up to 32 additional fixtures to the daisy chain.
•
Long parallel runs of AC power and control data cables may cause interference on the data link and
must be avoided. Even if not required by law, use separate conduits for power and data cables.
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RUSH® CS Series User Manual