Ltech DMX512 Instruction manual

8 bit / 16 bit
2 kinds of DMX interfaces
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LT-903
CHANNELS
Photoelectric
isolation
Short circuit /overheat / over current protection
006

8. Available in 16bit (65536 levels) and 8bit (256 levels).
4. With RDM remote management protocol, the operations can be completed via the
RDM master console, such as parameters browsing & setting, DMX address setting,
equipment recognition, etc.
2. Easy operation with digital display and the touch buttons.
1. Designed with 3 channels output, maximum 8A current per channel, and up to 576W
output power.
Short circuit
protection
RDM Over current
protection
Overheat
protection
5.
faults occur.
With short circuit / overheat / over current protection, as well as warning function when
3. 3-pin XLR, RJ45 DMX interface with photoelectric isolation, improve signal
transmission efficiency and anti-interference ability.
5-year
warranty
1
6. With fast self-testing function.
7. Available in high and low PWM frequency.
Product introduction
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RJ45
3-pin XLR Photoelectric
isolation
E500585

Technical specs
Unit: mm
LT-903
DMX512/RDM
3-pin XLR, RJ45
~
×
× 3CH Max. 576W
12 24Vdc
8A 3CH Max. 24A
(0~96W...192W)
8bit (256 levels) / 16bit (65536 levels)
Protection:
Working temp.:
:
:
:
Dimensions (L×W×H)
Package size(L×W×H)
Weight (G.W.)
Model
Input signal
Input voltage
Current load
:
:
DMX interfaces:
:
:
:
Output power:
Grey levels
Short circuit / overheat / Over current protection,
recover automatically.
-30°C~65°C
122×110×37mm
127×123×41mm
550g
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Photoelectric isolation: Yes
110
86
110
2
37
122

3
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Main component descriptions
Power
indicator
Signal
indicator
12-24Vdc
input voltage
LED lamps
connection
Digital
display
Dip
switch
Dip switch
RJ45
3-pin XLR
DMX/RDM
input & output
DMX/RDM
input & output
Digital display will enter the locked mode
without operating after 15 seconds.
Long press “M” key to unlock.
Short press “M” key to switch numbers.
Press “ ””v” key to adjust value.
^
006
Digital display
Screen
High Smooth
Low Standard
30S off
Enable
PWM Hz DIM
16
Bit
8
M
<
<
888

4
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DMX
RDM
DMX
RDM
Wiring diagram
1 Connecting LED lights:
Signal Signal
LED
driver
12-24Vdc
RGB LED
RGB LED
LT-903
V+
1
2
3

5
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DMX
console
2. DMX console onnectionc :
DMX signal
12-24Vdc 12-24Vdc
An amplifier is needed if more than 32 decoders are connected ,
signal amplification should not be more than 5 times continuously.
or use overlong signal line
If the recoil effect occurs because of longer signal line or bad line quality, please try to
connect 0.25W 90-120Ω terminal resistor at the end of each line.
*
*
DMX signal
LT-9 03 LT-90 3
1
3
2
PUSH
1
3
2
PUSH
DMX signal
12-24Vdc
Resistor
terminal
LT-903 is equipped with 2 kinds DMX
terminals for users’ selection. The following
diagram takes 3-pin XLR as an example,
the same connecting method for Rj45.
LT-9 03
GND
DATA+
DATA-

6
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These 2 terminals can be connected in a mixed way.
Rj45 connected in parallel
3-pin XLR connected in parallel
Terminal
resistor
Terminal
resistor
3. The connection diagram of 2 kinds of DMX/RDM terminals:
*
Installation Attentions : Please reserve enough ventilation distance between decoders ( no less
than 20mm). Be sure not to block the vent, or it may affect the lifetime of decoders for poor
heat dissipation.
Installation distance > 20mm
Vent
LT-9 03 LT-903 LT-9 03
LT-9 03 LT-903 LT-9 03
Update Time: 31/08/2020_A2
This manual is subject to changes without further notice.
Product feel free to contact our official distributors if you have any question.