railSplit uno User Guide
Overview
railSplit uno is a fully bi-directional DMX512 isolator and signal booster, with the added feature
of a ‘data fixer’ for DMX. The latter functionality is used for resolving flickering problems arising
from product incompatibility issues - see ‘Fix Mode’ on page 6 for more information.
railSplit uno offers industry leading levels of protection on input, output and power terminals. It
features electrocution protection (self-healing) on the DMX512 ports (up to 425 VAC continuous
connection).
Additionally, railSplit uno provides surge protection on all terminals. This feature protects the
product and connected equipment against voltage surges of the type generated by lightning.
The protection is sacrificial which means that after a certain number of protection events, the
protection circuitry will fail (see Specification on page 8). When the protection circuitry fails it
is guaranteed to fail short-circuit, which continues to provide protection to the DMX512 cables.
DMX512 output protection failure or shorted cable is reported with a front panel indicator and
via the fault tally output (see Connections diagram on page 3).
Page 4
Key features
y
Input optical isolation
y
Bi-directional outputs
y
Optimized for electrically noisy
environments
y
Mains electrocution protection (self-
healing) on DMX512 input and output
y
Surge protection (sacrificial) on all
terminals
y
Front panel fault indication
y
Fault report tally output for BMS
integration
y
RDM supported
y
Surface mount or DIN rail mounted
y
DMX-Fix mode to handle compatibility
issues
Connections
Input
The DMX512 input is attached via three screw
terminals. Please refer to the Connections
diagram.
Loop-Through
The DMX512 input can also be used as a
passive loop-through connection allowing
onward connection to other DMX512 devices.
If this feature is not required then the signal
must be terminated. The product contains an
internal termination resistor. This is enabled by
fitting the internal jumper under the terminal
guard. It is fitted by default.
Output
The output is capable of driving 32 additional
DMX512 devices. A terminator must be
connected to the final DMX512 device.
XLR Pin (Convention)
Function
Colour
1
Ground
Black
2
Data -
Blue
3
Data +
Red
DMX512 Wiring
