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System installation
27
Installing a DMX-controlled system
In a DMX-controlled system, an RDM-compliant DMX lighting controller sends a DMX control data signal
over a DMX link to the installation, and then over the hybrid link to the VDO Fatrons.
The DMX link requires DMX cable. It can be maximum 300 m (1000 ft.) in length and must run in one single
daisy-chain, but it can be extended or split into branches using an RDM-compliant amplifier/splitter such as
the Martin® RDM 5.5 Splitter (P/N 90758150). Alternatively, you can run the DMX signal from the controller
over Ethernet cable using Art-Net protocol and convert it to a DMX-compliant signal with an Art-Net to DMX
converter.
If you would like assistance with creating a DMX link, your Martin® supplier will be glad to advise.
The number of VDO Fatron fixtures that you can control on one DMX link is limited by the number of DMX
channels the VDO Fatrons will use and the 512 DMX channels available in one DMX universe at the DMX
controller. Each time you have used 512 channels, you must create a new DMX link that is connected to a
new DMX universe on the controller. Note that this limit applies to the
DMX
link
. The maximum safety limits
that apply to the chain of fixtures and cable (see “Safety limits for connecting devices” on page 8) take
priority and must be respected in all cases.
If you need to take the DMX signal from the end of a chain of VDO Fatron fixtures, connect a DMX Lead-out
Cable (see “Accessories” on page 47) to the output connector of the last fixture on the chain. The Lead-Out
Cable has a 5-pin female XLR connector with standard DMX pinout (pin 1 = shield, pin 2 = data
cold/negative, pin 3 = data hot/positive, pins 4 and 5 are not used) that lets you draw off the DMX signal.
DC power options in DMX installations
You can use any of the following PSUs to provide DC power in a DMX-controlled VDO Fatron installation:
• Martin® P3 PowerPort 1500
• Martin® IP66 PSU 240W external power supply unit
• generic external PSU (the Mean Well SP-480 48, for example)
The hardware and cables required are slightly different depending on which type of PSU you use to supply
the installation with DC power. The different types of installation are covered in the following sections:
• If you are using a Martin® P3 PowerPort 1500, see ”Installing a DMX system using the Martin® P3
PowerPort 1500” on page 28.
• If you are using a Martin® IP66 PSU 240W, see ”Installing a DMX system using the Martin® IP66 PSU
• If you are using a generic 48 VDC PSU, see ”Installing a DMX system using a generic external 48 VDC
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