1
LT- 8020 DMX512 Decoder Manual
LT- 8020 DMX512 Decoder Manual
LT-DMX-8020
DMX-SPI Signal Decoder
Manual
LT- 8020
1. Product parameter
Input voltage
Input Signal
Output signal
Decoding Channels
Output Grey Scale
DMX512 Connector
Product Dimension
Package Size
Working temperature
Weight (G.W)
DC5V
～
DC24V
DMX512/1990
SPI(TTL)
96 channels/unit
128 levels
Standard XLR-3 Connector
L125×W52×H40mm
L135×W70×H50mm
-30
-65
℃
℃
300g
The LT-8020 DMX512 Data Decoder adopted the advanced decoding
technology to convert the international standard DMX512/1990 signal into
standard SPI (TTL) signal to control LED lights based on 74HC595, MB5026,
DM134, DM135, SC16722, ZQ9712, or similar chips, each decoder has 96
DMX output channels, and the output channels can be expanded by adding
decoders, therefore, most of LED lights can be controlled via the signal
convertion, such as widely used pixel light, digital tube light, spot light,
floodlight, pixel screen, dancing floor light etc.
RoHS
COMPLIANT
warranty
3 years
ISO9001:2008
2
SPI(TTL) Output Port
2. Configuration Diagram
1 2 3 4 5 6 7 8 9 10
ON
DIP
DMX input port
Example 1:
“1” The rest to “0” as the below figure, In this connection, the summation from 1 to 9 is 1+4+32, Namely ,
The DMX512 initial address code is 37.
Like figure 2, Set initial address to 37, Set the “1st”,”3rd “,”6th”, bit of the DIP switch down to
D
A
T
A
C
L
K
L
A
T
MODEL: LT-8020
DMX512
DECODER
DC5V-DC24V
96 CHANNEL
G
N
D
3. Output Port definition
No.
Silk screen
Function
1
2
3
4
5
6
Power supply
input port
Output port
Connect LED
LED power supply input anode
LED power supply input cathode
Register Clock
Clock cable
Ground wire
(DC-)
DC+
DC-
DATA
CLK
LAT
GND
Warning: the power cable can’t connect the data port, otherwise it will damage the
decoder!
4. Address Setting
Data cable
This decoder can decode 128 DMX addresses, adopted Dip switch to set the address, the
Dip switches from 1 to 9 are a kind of binary value coding switches, the 1st bit is LSC, the
9th bit MSC, can set 511 addresses totally.
DMX512 initial address code is equal to the total amount of the Dip switches’ numbers from
1 to 9, press Dip switch downward (ON: at position “1”), you can get the number of its
position, if press upward (at position “0”), the value of its position is 0.
Accept DMX512 signal only when the DIP switch FUN(10)=OFF(at position “0”)
Figure 1
Example 2: Set DMX512 original address code as 385: Set the 9th, 8th, 1st bit of the DIP switch
downward to “1”, the rest to “0” (as Figure 2), the total sum from 1 to 9 is 256+128+1, so the DMX512
original address code is 385.
4
1 2 3 4 5 6 7 8 9 10
ON
0
1
OFF
ON
Figure 2
4
1 2 3 4 5 6 7 8 9 10
ON
0
1
OFF
ON
ZHUHAI LTECH ELECTRONIC TECHNOLOGY CO., LTD.
Tel: +86 756 620 8823
Fax: +86 756 620 8833
