LSC Lighting MDR Splitter - Manual (Page 5)

MDR DMX512/RDM Data Splitter Operator Manual
LSC Lighting Systems (Aust) Pty Ltd. Page 3
DMX512 Operation
The MDR DMX512 data splitters have been designed for quick and easy operation. A brief
operational instruction is detailed below.
1. Connect the MDR DMX512-A data splitter to a suitable power source and apply power.
The “POWER” light will illuminate.
2. Connect the DMX512-A source cable into the DMX INPUT connector of the MDR splitter.
The “DMX data” light next to the connector will illuminate if data is present.
3. If the MDR splitter is to be the last device at the end of the DMX512 input cable, then
press the DMX TERM button. The “DMX Terminate” indicator light will now illuminate.
4. If the MDR splitter is not the last device on the line, the DMX THRU output connector
can be used to connect an output cable and allow the incoming data stream to continue
to other equipment downstream.
5. Connect the required DMX512 output cable/s to the DMX512 output connectors of the
MDR splitter.
6. DMX512-A data present at the DMX512 input connector is now internally routed to all
five (ten) DMX512 output connectors and therefore to all devices connected downstream
from the MDR splitter.
Note: All outputs are individually isolated from each other as well as the input. Isolation is
for both data and common connections and provides a galvanic barrier to 1500 Volts.
Outputs are EMI filtered and current limited to protect against short circuits.
RDM Operation
The RDM module, when fitted, allows RDM based devices to communicate with each other in
bi-directional mode interleaved with the DMX512-A signal. All Inputs and Outputs use the
standard DMX512-A connectors and cables.
1. Connect Power, Input, Thru and Outputs as per the DMX512 section above.
2. To make the MDR splitter work in RDM mode, press the RDM Enable switch. The RDM
Enable indicator light will now illuminate.
3. When data passes through the MDR splitter from the controller to a responder, then the
DMX DATA > indicator will illuminate. When RDM data passes back through the splitter
from the responder to the controller, then the RDM DATA < indicator will illuminate. As
RDM is bi-directional, it is possible that both indicators may illuminate at the same time.
4. If RDM data overflows, the RDM ENABLE indicator will begin flashing and the RDM
function will be disabled automatically.
Note: When an RDM device overflows the RDM data stream, then you must isolate the
offending device from the network and reset the RDM module in the MDR splitter by
pressing the RDM ENABLE switch off, then back on.