American DJ Double Feature User Instructions page 3

Double Feature
Power Supply:
Before plugging your unit in, be sure the source volt-
age in your area matches the required voltage for your American DJ
Double Feature.™ The American DJ
120v and 220v version. Because line voltage may vary from venue to
venue, you should be sure your unit voltages matches the wall outlet
voltage before attempting to operate you fixture.
DMX-512:
DMX is short for Digital Multiplex. This is a universal pro-
tocol used as a form of communication 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 trav-
els from fixture to fixture via the DATA "IN" and DATA "OUT" XLR ter-
minals 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 manufactures to be linked together and operate from a sin-
gle controller, as long as all fixtures and the controller are DMX com-
pliant. To ensure proper DMX data transmission, when using several
DMX fixtures try to use the shortest cable path possible. 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 and Master/Slave
Operation): The Double Feature can be controlled via DMX-512 proto-
col. The Double Feature is a eight channel DMX unit. The DMX address
is set on the bottom panel of the Double Feature. ™ Your unit and your
DMX controller require a standard 3-pin XLR con-
nector for data input and data output (Figure 1). If
you are making your own cables, be sure to use
standard two conductor shielded cable (This cable
may be purchased at almost all pro sound and
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 can not be split.
American DJ - www.americandj.com - Double Feature Instruction Manual Page 5
© ®
Set Up
Double Feature is available in a
®
REMOTE
INPUT OUTPUT
SOUND CONTROL
INPUT
POWER
DMX512
DMX+,DMX-,COMMON
1
DMX512 OUT
3
3-PIN XLR
2
Figure 1
Double Feature
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-
®
DMX+,DMX-,COMMON
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.
DMX512 OUT
3-PIN XLR
XLR Male Socket
1 Ground
2 Cold
3 Hot
Figure 3
REMOTE
INPUT
SOUND CONTROL
INPUT
Special Note: Line Termination.
used, you may need to use a terminator on the last unit to avoid erratic
behavior. A terminator is a 90-120 ohm 1/4 watt resistor which is con-
nected 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.
COMMON
DMX +
1
DMX512 IN
3
3-PIN XLR
DMX -
2
American DJ
© ®
POWER
DMX512
COMMON
DMX +
1 1
3 3
DMX -
2
2
XLR Female Socket
2 Cold
1 Ground
3 Hot
OUTPUT
SOUND
When longer runs of cable are
POWER
Termination reduces signal errors and
avoids signal transmission problems
1
and interference. It is always advisable
3
2 to connect a DMX terminal, (Resistance
120 Ohm 1/4 W) between PIN 2 (DMX-)
and PIN 3 (DMX +) of the last fixture.
- www.americandj.com - Double Feature Instruction Manual Page 6
Set Up
POWER
Termination reduc
avoids signal tra
1
DMX512 IN
3 and interference.
3-PIN XLR
2 to connect a DMX
120 Ohm 1/4 W) b
Figure 2
and PIN 3 (DMX
XLR Pin Configuration
Pin 1 = Ground
Pin 2 = Data Compliment (negative)
Pin 3 = Data True (positive)
REMOTE
INPUT OUTPUT
CONTROL
INPUT
POWER
Figure 4