OPERATION
Select the mode by the selector switch (or by internal jumper settings). Connect a DMX512 signal into
inputs A, B and/or C and apply power, the red LED will illuminate. Once a valid DMX512 signal is received
the DMG will immediately begin transmitting a DMX512 signal in the mode type selected. In all modes, the
input LED’s for A, B and C inputs will illuminate indicating data is present on the respective input. If an
overrun error occurred (caused by quick packet size changes/processing) the respective LED will blink. The
DMG will continue to run as normal and is NOT in an error condition, the LED’s are indicating that an error
has occurred. This error is cleared by a power reset. To change modes, select the desired mode and
perform a power reset.
CONFIGURATION EXAMPLE
PCB BLOCK DIAGRAM
I
NPUT:
The inputs (pins 2 and 3) connect to a 75176 data input IC’s, and send to the processor.
OUTPUT
:
The processor sends merged data to the output that supplies data to the output connectors. Pin 1 is
connected to the power supply common.
DMX 2X1 / 3X1 MERGER USER GUIDE
Pg 5
ELM Video
Technology,
Inc.
DMG_User_Guide.lwp V2.10
Http://elmvideotechnology.com
copyright
©
2009 - 2013 ELM Video Technology, Inc.
DMX512
Source 1
DMX512 Device Examples: moving heads,
LED Pars, House Dimmers, Relays, etc.
2x1
Merger
Terminate
2x1 or 3x1 Merger Configuration Example
DMX512
Source 2
(optional)
2x1
Merger
DMX512
Source 3
DMX512 Source Examples: Lighting Board, PC
w/ DMX output hardware, DMX Splitters etc.
A
B
C
A
B
A
B
Merger Block Diagram [DMG]
Pin 1 - open
(Do not connect)
Pin 2 - Data -
Pin 3 - Data +
Input B
CPU
Processor
Input A
Pin 1 - open
(Do not connect)
Pin 2 - Data -
Pin 3 - Data +
Merged
Output
Pin 1 – Connect
(Power supply Common)
Pin 2 - Data -
Pin 3 - Data +
