ADJ COB CannOn Wash DW User Instructions page 6

DMX SET UP (continued)
Data Cable (DMX Cable) Requirements (For DMX Operation): The COB Cannon Wash DW can be controlled
via DMX-512 protocol. The COB Cannon Wash DW has 6 DMX modes, please see pages
9-10 for the different modes. The DMX address is set on the back panel of the COB Cannon
Wash DW. Your unit and your DMX controller require a standard 3-pin or 5-pin XLR
connector for data input and data output (Figure 1). We recommend Accu-Cable DMX
cables. If you are making your own cables, be sure to use standard 110-120 Ohm shielded
cable (This cable may be purchased at almost all pro lighting stores). Your cables should be
made with a male and female XLR connector on either end of the cable. Also remember that
DMX 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 con- nect 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.
Figure 3
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.
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 stan- dard 5-pin
data cables in to a 3-pin line a cable adaptor must be used, these adaptors are readily available at most electric
stores. The chart below details a proper cable conversion.
Conductor
Ground/Shield
Data compliment (- signal)
Data True (+ signal)
Not used
Not used
Termination reduces signal errors
and avoids
problems and interference. It is
always advisable to connect a DMX
terminal, (Resistance 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)
ADJ Products, LLC - www.adj.com COB Cannon Wash DW User Manual Page 6
Figure 2
XLR Pin Configuration
Pin1 = Ground
Pin2 = Data Compliment (negative)
Pin3 = Data True (positive)
signal transmission
Pin 1
Pin 2
Pin 3
Figure 1
5-pin XLR Male (In)
Pin 1
Pin 2
Pin 3
Do Not Use
Do Not Use