ADJ DOTZ MATRIX User Instructions page 11

DMX SETUP
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.
XLR Male Socket
1 Ground
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.
Conductor
Ground/Sheld
Data Compliment (- signal)
Data True (+ signal)
Not Used
Not Used
5-Pin XLR DMX Connectors. Some manufactures use 5-pin DMX-512 data cables for DATA transmission
in place of 3-pin. 5-pin DMX fixtures may be implemented in a 3-pin DMX line. When inserting standard
5-pin data cables in to a 3-pin line a cable adapter must be used, these adapters are readily available
at most electric stores. The chart below details a proper cable conversion.
1
DMX512 OäT
3
3-PIN XLR
2
XLR Female Socket
2 Cold 2 Cold
3 Hot
Termination reduces signal errors and avoids signal
transmission problems and interference. It is always
1
advisable to connect a DMX terminal, (Resistance
3
2
120 Ohm 1/4 W) between PIN 2 (DMX-) and PIN 3
(DMX+) of the last fixture. Figure 4
3-Pin XLR to 5-Pin XLR Conversion
3-Pin XLR Female (Out)
COMMON
DMX +
1
DMX512 IN
3
3-PIN XLR
DMX -
2
XLR Pin Configuration
1 Ground
Pin 1 = Ground
Pin 2 = Data Compliment (negative)
3 Hot
Pin 3 = Data True (positive)
Pin 1
Pin 2
Pin 3
11
5-Pin XLR Male (In)
Pin 1
Pin 2
Pin 3
Do Not Use
Do Not Use