Figure 2
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 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 ZDMX/T) will decrease the possibilities of erratic behavior.
Spiral Scan™
Set Up
DMX512 IN
3-PIN XLR
SOUND
REMOTE
CONTROL
INPUT
POWER
INPUT
OUTPUT
SOUND
REMOTE
CONTROL
INPUT
POWER
INPUT
OUTPUT
SOUND
REMOTE
CONTROL
INPUT
POWER
INPUT
OUTPUT
DMX512
DMX+,DMX-,COMMON
1
2
3
Termination reduces signal errors and
avoids signal transmission 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.
1
2
3
1
2
3
DMX +
DMX -
COMMON
DMX512 OUT
3-PIN XLR
Figure 4
Spiral Scan™
DMX Addressing
DMX is short for Digital Multiplex. This is a universal binary language
used as a form of communication between intelligent fixtures. Each dip
switch represents a binary value.
Dip Switch 1 address equals 1
Dip Switch 2 address equals 2
Dip Switch 3 address equals 4
Dip Switch 4 address equals 8
Dip Switch 5 address equals 16
Dip Switch 6 address equals 32
Dip Switch 7 address equals 64
Dip Switch 8 address equals 128
Dip Switch 9 address equals 256
Each dip switch has a preset value, a desired DMX address is set by
combining the dip switches that will create your desired value. For
example: To achieve a DMX address of 21, combine dip switches 1, 3,
and 5. Sense dip switch 1 has a value of 1, dip switch 3 has a value
of 4, and dip switch 5 has a value of 16, the combination of the create
a DMX value of 21.
Set DMX address 21:
Set DMX address 201:
Dipswitches # 1 = 1
Dipswitches # 1 = 1
3 = 4
4 = 8
5 = 16
7 = 64
= 21
8 = 128
= 201
©
American DJ Supply
®
- www.americandj.com - Spiral Scan™ Instruction Manual Page 5
©
American DJ Supply
®
- www.americandj.com - Spiral Scan™ Instruction Manual Page 6
Power Supply:
Before plugging your unit in, be sure the source volt-
age in your area matches the required voltage for your American DJ
®
Spiral Scan.™ The American DJ
®
Spiral Scan
™
is available in a 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.
Data Cable (DMX Cable) Requirements
(For DMX and Master/Slave Operation):
The Spiral Scan can be controlled via DMX-512
protocol. The American DJ
®
Spiral Scan™ is a
three channel DMX unit. The DMX address is set
on the front panel of the Spiral Scan. Your unit
and your DMX controller require a standard 3-pin
XLR connector 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.
Notice:
Be sure to follow figure 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.
Figure 1
DMX512 IN
3-PIN XLR
SOUND
REMOTE
CONTROL
INPUT
POWER
INPUT
OUTPUT
SOUND
REMOTE
CONTROL
INPUT
POWER
INPUT
OUTPUT
SOUND
REMOTE
CONTROL
INPUT
POWER
INPUT
OUTPUT
DMX512
DMX+,DMX-,COMMON
1
2
3
Termination reduces signal errors and
avoids signal transmission 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.
1
2
3
1
2
3
DMX +
DMX -
COMMON
DMX512 OUT
3-PIN XLR
Figure 3
Spiral Scan™
Set Up
1 Ground
1 Ground
XLR Male Socket
XLR Pin Configuration
3 Hot
2 Cold
2 Cold
3 Hot
XLR Female Socket
Pin 3 = Data True (positive)
Pin 2 = Data Compliment (negative)
Pin 1 = Shield
DMX CHANNEL
1 2 3
5
4
7
9
8
6
ON
1 4 16 64 256
2 8 32 128
