Your cables should be made with a male and female XLR connector on either
end of the cable. Also remember that OMX cable must be daisy chained and
cannot be split.
Notice: Be sure to follow figures two and three when making your own cables.
Do not use the ground lug on the XLR connector. Do not connect the cable's
shield conductor to the ground lug or allow the shield conductor to come in
contact with the XLR's outer casing. Grounding the shield could cause a short
circuit and erratic behavior.
DMX512 OUT
3-PIN XLR
�
OMX+
01
�t----D-M_X_- -----1o�2
DMX512 IN
3-PIN XLR
1
XLR Male Socket
I
:
lGrou
w
old
3 Hot
XLR Female Socket
,
I
2Cold
�
Ground 1
. .
:
I
I
3 Hot
XLR Pin Configuration
Pin 1 = Ground
Pin 2 = Data Compliment (negative)
Pin 3 = Data True (positive)
Special Note: Line Termination. When longer runs of cable are used, you
may need to use a terminator on the last unit to avoid erratic behavior. A
terminator is a 110-120 ohm 1/4 watt resistor which is connected between pins
2 and 3 of a male XLR connector (DATA+ and DATA-). This unit is inserted
in the female XLR connector of the last unit in your daisy chain to terminate
the line. Using a cable terminator (ADJ part number Z-DMX/T) will decrease
the possibilities of erratic behavior.
Termination reduces signal errors and
avoids signal transmission problems
and interference. It is always advisable
to connect a OMX terminal, (Resistance
120 Ohm 1/4 W) between PIN 2 (OMX-)
and PIN 3 (OMX+) of the last fixture.
8
