LSC MDRT User manual

1.1 DMX/RDM SPLITTER
MDR-DIN is a DINrail-mounted DMX/RDM data splitter.
Two models are available:
•DMX INPUT and 4 DMX outputs via push-fit terminals
•2 DMX IN/THRU RJ45 sockets and 4 DMX output RJ45 sockets
MDR-DIN supports RDM (Remote Device Management), see section 1.10.
MDR-DIN is powered from an external power source (9-24V DC, 5W).
1.2 INSTALLATION
1. Mount the unit on the DINrail.
2. Connect a suitable power source to the 9-24V DC push-fit terminals observing
the correct polarity. A minimum of 5W of power is required.
3. Connect the DMX512 cables…
RJ45 Models
Push-Fit Terminal Models
Plug the DMX source cable into either
DMX IN/THRU connector.
Connect the DMX source cable
into the DMX INPUT terminals.
If this MDR-DIN splitter is the last device
at the end of the DMX512 input cable,
connect a 120 ohm resistor to the other
DMX IN/THRU connector. See section
1.7 for the pin-outs.
If the MDR splitter is not the last device
on the line, the other DMX IN/THRU
connector can be used to connect the
DMX to other equipment.
If this MDR-DIN splitter is the last
device at the end of the DMX512
input cable, connect a 120 ohm
resistor across the DMX INPUT
terminals.
If the MDR splitter is not the last
device on the line, the same DMX
INPUT terminals can be used to
connect the DMX to other
equipment in parallel.
Connect the DMX512 output cable(s) to
the DMX512 output connector(s).
Connect the DMX512 output
cable(s) to the DMX512 output
terminals.
1.3 RDM ENABLE
Some older DMX-controlled equipment is not compatible with RDM data and
could flash or flicker when RDM data is present. To overcome this problem, each
individual output port can have the RDM data turned off via the front-panel
switches.
1.4 OPERATION
•The DMX512 data LED flashes when DMX data is present
•The RDM data LED flashes when RDM data is present
•The Power LED is lit when power is present and flashes when an RDM Identify
request is received
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LSC Lighting Systems (Aust) Pty. Ltd. has a corporate policy
of continuous improvement, covering areas such as
product design and documentation. In light of this policy,
some detail contained in this manual may not match the
exact operation of your product. Information contained in
this manual is subject to change without notice. In any
event, LSC Lighting Systems (Aust) Pty. Ltd. cannot be held
liable for any direct, indirect, special, incidental, or
consequential damages or loss whatsoever (including,
without limitation, damages for loss of profits, business
interruption, or other pecuniary loss) arising out the use or
the inability to use this product for its intended purpose as
expressed by the manufacturer and in conjunction with this
operating manual. Servicing of this product is
recommended to be carried out by LSC Lighting Systems
(Aust) Pty. Ltd. or its authorized service agents. No liability
will be accepted whatsoever for any loss or damage caused
by service, maintenance or repair by unauthorized
personnel. In addition servicing by unauthorized personnel
may void your warranty.
LSC Lighting Systems’ products must only be used for the
purpose for which they were intended.
Copyright © 2019 LSC Lighting Systems (Aust) Pty.
Ltd. All rights reserved.
MDR-DIN
DINrail-Mount
DMX/RDM Splitter
Quick Start Guide
Version 1.1 May 2019
LSC Lighting Systems (Aust) Pty. Ltd.
ABN 21 090 801 675
[phone]
[email protected]m
www.lsclighting.com
MDR-DIN
push-fit terminals
POWER I/P
DMX INPUT
4 x DMX OUTPUTS
DINrail Release
RDM
Enable
Switches
POWER
LED
DMX
LED
RDM
LED
MDR-DIN
RJ45 connectors
DINrail Release
RDM
Enable
Switches
DMX
IN/THRU
DMX
IN/THRU
4 x DMX OUTPUTS
POWER I/P
POWER
LED
DMX
LED
RDM
LED

1.5 DMX CABLES
Only use specific DMX data cable. The data cable must conform to the EIA485 cable
requirements by providing the following specifications:
•Low capacitance
•One or more twisted pairs
•Foil and braid shielded
•Impedance of 85-150 ohms, nominally 120 ohms
•22AWG gauge for continuous lengths over 300 metres
If you want to make your own cables LSC recommends using Beldon 9842 (or
equivalent). Never use audio cable.
The end of the DMX line must be terminated (120 Ω) to prevent the signal reflecting
back up the line and causing possible errors.
1.6 PUSH-FIT TERMINALS
The following cables are suitable for use with the push-fit terminals:
•2.5mm² stranded wire
•4.0mm² solid wire
Stripping length is 8mm.
Insert a small screwdriver into the slot adjacent to the cable hole. This releases the
spring inside the connector. Insert the cable into the round hole then remove the
screwdriver. Solid wires or wires fitted with ferrules can often be pushed directly
into the connector without the use of the screwdriver. When connecting multiple
cables to a single terminal the wires must be twisted together to ensure a good
connection to both legs. Non-insulated bootlace ferrules can also be used for
stranded cables. Ferrules are not recommended for solid cables. Insulated bootlace
ferrules can also be used allowing stranded cables to be easily inserted without the
need of a tool to actuate the spring release. The maximum ferrule outer diameter is
4mm.
1.7 RJ45 DMX CONNECTOR PIN-OUTS
RJ45 8-Pin Connector
Function
Pin 1
DMX +ve
Pin 2
DMX –ve
Pin 3
Not Connected
Pin 4
Not Connected
Pin 5
Not Connected
Pin 6
Not Connected
Pin 7
Common
Pin 8
Common
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1.8 MDR-DIN SPECIFICATIONS
Power Requirements
9-24V DC, 5W
Power Input Connector
Quick Connect Terminals
Reverse Polarity Protected
Yes
Input and Thru Connectors
RJ45 or Quick Connect Terminals
Output Connectors
RJ45 or Quick Connect Terminals
Number of Buffered Outputs
4
DMX Protocol
ANSI DMX512A Standard E1.11:2008 (R2013)
RDM Protocol
ANSI RDM Standard E1.20:2010
RDM
Can be individually disabled on each output
All Inputs and all Outputs Isolated
Yes
Galvanic Isolation Barrier
1500V
Short Circuit Protected
Yes
DMX512 Data LED
Yes (Flashes when DMX data is present)
RDM Data LED
Yes (Flashes when RDM data is present)
Power LED
Yes (Flashes when RDM Identify is received)
Conformity
CE, RCM
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 1500V. Outputs are EMI-filtered and current-limited to protect against
short circuits.
1.9 DMX EXPLAINED
DMX512-A is the industry standard for the transmission of digital control signals
between lighting equipment. It utilises just a single pair of wires on which is
transmitted the level information for the control of up to 512 DMX slots
(addresses or channels).
The information for each slot is sent sequentially. The level of slot 1 is
transmitted, then the level of slot 2, then 3, etc., up to a maximum of 512 slots.
This stream of data containing the levels for all 512 DMX slots is repeated a
minimum (generally) of 44 times per second. This provides sufficient updates of
channel information for smooth fade transitions.
DMX allows a controller to communicate with a device. It does not allow the
device to communicate with the controller.
1.10 RDM EXPLAINED
RDM allows RDM-based controllers and devices to communicate with each other
in bidirectional mode over the DMX cable, interleaved with the DMX512-A signal.
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