Dmx Set Up - ADJ HYDRO SPOT 1 User Manual

D M X S E T U P
DMX-512: DMX is short for Digital Multiplex. This is a universal protocol used as a form of commu-
nication between intelligent fixtures and controllers. A DMX controller sends DMX data instructions
from the controller to the fixture. DMX data is sent as serial data that travels from fixture to fixture via
the DATA "IN" and DATA "OUT" XLR terminals located on all DMX fixtures (most controllers only have
a DATA "OUT" terminal).
DMX Linking: DMX is a language allowing all makes and models of different manufacturers to be
linked together and operate from a single controller, as long as all fixtures and the controller are
DMX compliant. To ensure proper DMX data transmission, try to use the shortest cable path possible
when linking several DMX fixtures. The order in which fixtures are connected in a DMX line does not
influence the DMX addressing. For example, a fixture assigned a DMX address of 1 may be placed
anywhere in a DMX line: at the beginning, at the end, or anywhere in the middle. When a fixture is
assigned a DMX address of 1, the DMX controller knows to send DATA assigned to address 1 to that
unit, no matter where it is located in the DMX chain.
Data Cable (DMX Cable) Requirements (For DMX Operation): This unit can be controlled via DMX-
512 protocol. The DMX address is set on the rear panel of the unit. Your unit and your DMX controller
require a standard 5-pin XLR connector for data input and data output. 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 XLR connector at one end and a female XLR connector at the other. Also remember that
DMX cable must be daisy chained and cannot be split.
Notice: Be sure to follow the diagram below 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 into contact with the XLR's outer casing. Grounding the shield could cause
a short circuit and erratic behavior.
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 reduce the risk of erratic behavior.
22