Ltech LT-904 Manual de usuario
1
8. 16bit (65536 levels) / 8bit (256 levels) grey level avaliable.
2. Easy operation with digital display and the touch buttons.
1. Designed with 4 channels output, and Max. 6A current per channel, up to 576W output
power.
4. With RDM remote management protocol, the operations can be completed via the
RDM master console, such as parameters browsing & settings, DMX address settings,
equipment recognition, etc.
3. 3-pin XLR, RJ45 DMX interface with photoelectric isolation, improve signal
transmission efficiency and anti-interference ability.
1
Short circuit
protection
RDM Over current
protection
Overheat
protection
5.
when a fault occurs.
With short circuit, over current and overheat protection, as well as warning function
5-Year
Warranty
6. With fast self-testing function.
7. High/low frequency PWM available.
Product introduction
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RJ45
3-pin XLR Photoelectric
isolation
E500585
2
Technical specs
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Unit: mm
LT-904
DMX512/RDM
3-pin XLR, RJ45
~
×
× 4CH Max. 576W
12 24Vdc
6A 4CH Max. 24A
(0~72W...144W)
8bit (256 levels) / 16bit (65536 levels)
Protection:
Working temperature:
:
:
:
Dimensions
Package size
Weight (G.W.)
Model
Input signal
Input voltage
Current load
:
:
DMX interfaces:
:
:
:
Output power:
Grey level
Short circuit / Overheat / Over current protection,
recover automatically.
-30°C~65°C
122×110×37mm(L×W×H)
127×123×41mm(L×W×H)
550g
Photoelectric isolation: Yes
110
86 37
122
110
Product size
006
3
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Main component description
Power
indicator
Signal
indicator
12-24Vdc
input voltage
LED lamp
connection
Digital
display
Dip
switch
Digital display
Screen
High Smooth
Low Std
30S off
Enable
PWM Hz DIM
Digital display will enter the locked mode
without operating after 15 seconds.
Dip switch
16
Bit
8
Long press “M” key to unlock.
Short press “M” key to switch numbers.
Press “ ””v” key to adjust value.
^
RJ45
3-pin XLR
DMX/RDM
input & output
DMX/RDM
input & output
M
<
<
888
4
DMX
RDM
DMX
RDM
Signal Signal
LED
driver
12-24Vdc
RGBW LED
RGBW LED
LT-904
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Wiring diagram
1. Connecting LED lights:
V+
1
2
3
4
DMX signal
12-24Vdc
Resistor
terminal
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.
LT-904 is equipped with 2 kinds of DMX
terminals for users’ selection. The following
diagram takes 3-pin XLR as an example,
same connecting method for RJ45.
LT-904 LT-904
GND
DATA+
DATA-
5
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DMX
console
2. DMX console onnectionc :
DMX signal
12-24Vdc 12-24Vdc
*
*
DMX signal
LT-904
1
3
2
PUSH
1
3
2
PUSH
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These 2 terminals can be connected in a mixed way.
RJ45 connected in parallel
3-pin XLR connected in parallel
3. The connection diagram of 2 kinds of DMX/RDM terminals:
*
Installation attentions: please reserve enough ventilation distance between decoders (>20mm),
be sure not to block the vent, or it will affect lifetime of decoder for .poor heat dissipation
Installation distance > 20mm
Vent
LT-904 LT-904
LT-904 LT-904
6
Resistor
terminal
Resistor
terminal
LT-904
LT-904
7
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Update time: 14/01/2021_A2
Attentions
Warranty agreement
Warranty exclusions below:
No any contract signed by LTECH.
Warranty labels and barcodes have been damaged.
Damage caused by natural disasters and force majeure.
Products with severe physical damage.
Beyond warranty periods.
Warranty periods from the date of delivery : 5 years.
Free repair or replacement services for quality problems are provided within warranty periods.
Any artificial damage caused by high voltage, overload, or improper operations.
1. Repair or replacement provided is the only remedy for customers. LTECH is not liable for any incidental
or consequential damage unless it is within the law.
2. LTECH has the right to amend or adjust the terms of this warranty, and release in written form shall
prevail.
This manual is subject to changes without further notice. Product functions depend on the goods.
Please feel free to contact our official distributors if you have any question.
1. Products shall be installed by qualified professionals.
2. LTECH products are non-waterproof (special models excepted). Please avoid the sun and rain. When
installed outdoors, please ensure it is mounted in a water proof enclosure.
3. Good heat dissipation will extend the working life of products. Please ensure good ventilation.
4. Please check if the working voltage used complies with the parameter requirements of products.
5. The diameter of wire used must be able to load the light fixtures you connect and ensure the firm wiring.
6. Before you power on products, please make sure all the wiring is correct in case of incorrect connection
that causes damage to light fixtures.
7. If a fault occurs, please do not attempt to fix products by yourself. If you have any question, please contact
your suppliers.
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