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Tempest 250MSD™
sound activation.
Assigning DMX Address: Each dipswitch has a preset value. A
specific DMX address is set by combining the dipswitches that sum
your desired value. For example: To achieve a DMX address of 21,
combine dipswitches 1, 3, and 5. Since dipswitch 1 has a value of 1,
dipswitch 3 has a value of 4, and dipswitch 5 has a value of 16, the
combination of the three create a DMX value of 21.
Set DMX address 21:
Dip-switches #
1 = 1
3 = 4
5 = 16
= 21
Data Cable (DMX Cable) Requirements (For DMX and Master/Slave
Operation): The Tempest 250MSD™ can be controlled via DMX-512
protocol. The Tempest 250MSD™ is a one channel DMX unit. The
DMX address is set on the side panel of the Tempest 250MSD. ™ 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,
REMOTE
INPUT
OUTPUT
CONTROL
INPUT
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.
POWER
Notice:
Be sure to follow figures two and three when making your own
DMX512
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.
COMMON
DMX +
1
DMX512 OUT
3
3-PIN XLR
DMX -
2
American DJ
- www.americandj.com - Tempest 250MSD™ Instruction Manual Page 7
©
®
REMOTE
INPUT
OUTPUT
SOUND
CONTROL
INPUT
Set DMX address 201:
Dip-switches #
1 = 1
4 = 8
7 = 64
DMX512
DMX+,DMX-,COMMON
8 = 128
= 201
1
DMX512 OUT
3-PIN XLR
2
REMOTE
INPUT
OUTPUT
SOUND
CONTROL
INPUT
1
DMX512 IN
3
3-PIN XLR
2
Figure 2
Set Up
Tempest 250MSD™
XLR Male Socket
1 Ground
SOUND
Figure 3
Special Note: Line Termination.
POWER
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
3-PIN XLR
DMX -
2
SOUND
CONTROL
5-Pin XLR DMX Connectors.
connectors for DATA transmission in place of 3-pin. 5-pin XLR fixtures
may be implemented in a 3-pin XLR DMX line. When inserting stan-
dard 5-pin XLR connectors in to a 3-pin line a cable adaptor must be
Figure 1
used, these adaptors are readily available at most electric stores. The
POWER
chart below details a proper cable conversion.
Data Compliment (- signal)
Data True (+ signal)
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.
American DJ
©
XLR Female Socket
2 Cold
2 Cold
1 Ground
REMOTE
INPUT
OUTPUT
CONTROL
SOUND
INPUT
3 Hot
3 Hot
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.
REMOTE
INPUT
OUTPUT
INPUT
Some manufactures use 5-pin XLR
POWER
3-Pin XLR to 5-Pin XLR Conversion
Conductor
3-Pin XLR Female (Out)
Ground/Shield
Pin 1
Pin 2
Pin 3
Not Used
Not Used
- www.americandj.com - Tempest 250MSD™ Instruction Manual Page 8
®
Set Up
XLR Pin Configuration
Pin 1 = Ground
REMOTE
INPUT
OUTPUT
CONTROL
Pin 2 = Data Compliment (negative)
INPUT
Pin 3 = Data True (positive)
When longer runs of cable are
POWER
Figure 4
5-Pin XLR Male (In)
Pin 1
Pin 2
Pin 3
Pin 4 - Do Not Use
Pin 5 - Do Not Use
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