mbt Lighting ST7500DMX User Manual Download Page 5

8B 

DMX512 Address Chart 

 

Dip  #1 #2  #3  #4 #5 #6 #7

#8

#9

#10 

Value  1  2  4  8  16 32 64

128

256

Option

 

 Examples: 

    Channel 1 : dip / on : #1 ( =1 ) 

Channel 3 : dip / on : #1, #2 ( 1 + 2 = 3) 

    Channel 5 : dip / on : #1, #3 ( 1 + 4 = 5 ) 

Channel 7 : dip / on : #1, #2, #3 ( 1 + 2 + 4 = 7 )

 

 
 
 

  7. DMX512 Configuration   

 

DMX512 configuration 

Channel 1 

Channel 2 

DMX512 

Level rang 0~255 

Strobe Speed 

Dimmer 

240~255 

Speed 15 

Dimmer 15 

224~239 

Speed 14 

Dimmer 14 

208~223 

Speed 13 

Dimmer 13 

192~207 

Speed 12 

Dimmer 12 

176~191 

Speed 11 

Dimmer 11 

160~175 

Speed 10 

Dimmer 10 

144~159 

Speed 9 

Dimmer 9 

128~143 

Speed 8 

Dimmer 8 

112~127 

Speed 7 

Dimmer 7 

96~111 

Speed 6 

Dimmer 6 

80~95 

Speed 5 

Dimmer 5 

64~79 

Speed 4 

Dimmer 4 

48~63 

Speed 3 

Dimmer 3 

32~47 

Speed 2 

Dimmer 2 

16~31 

Speed 1 

Dimmer 1 

0~15 Stopped 

Blackout 

 
 

9B 

  8. DMX512 Connection   

 

The DMX512 is widely used in intelligent lighting control, with a maximum of 512 
channels. 
 
1.  If you using a controller with 5 pins DMX output, you need to use a 5 to 3 pin 

adapter-cable. 

2.  At last unit, the DMX cable has to be terminated with a terminator. Solder a 

120 ohm 1/4W resistor between pin 2(DMX-) and pin 3(DMX+) into a 3-pin 
XLR-plug and plug it in the DMX-output of the last unit. 

3.  Connect the unit together in a ‘daisy chain’ by XLR plug from the output of the 

unit to the input of the next unit. The cable can not be branched or split to a ‘Y’ 
cable. DMX512 is a very high-speed signal. Inadequate or damaged cables, 
solder joints or corroded connectors can easily distort the signal and shut 
down the system. 

4.  The DMX output and input connectors are pass-through to maintain the DMX 

circuit, when power is disconnected to the unit. 

5.  Each lighting unit needs to have an address set to receive the data sent by the 

controller. The address number is between 0-511 (usually 0 & 1 are equal to 
1). 

6.  The end of the DMX512 system should be terminated to reduce signal errors. 
7.  3 pin XLR connectors are more popular than 5 pin XLR. 

3 pin XLR: Pin 1: GND, Pin 2: Negative signal (-), Pin 3: Positive signal (+)   

5 pin XLR: Pin 1: GND, Pin 2: Negative signal (-), Pin 3: Positive signal (+)

 

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