Ltech M4-C User manual

M4-C
M4-C
DMX/RDM CV Decoder
M4-C DMX/RDM CV Decoder
With the standard RDM (Remote Device Management) protocol, M4-C supports DMX512 signal bi-directional communication, achieves
remote management of reading and writing DMX addresses (DMX master controller must support the RDM protocol). It realizes 0-100%
dimming or different lighting effects. It can work with DIM, CT, RGB, RGBW constantvoltage LED lamps. M4-C can be operated in DMX
mode or in customized mode.
Product Parameters
Input Voltage:
Output Current:
Output Power:
Dimming Range:
12-48Vdc
DMX512, RDM
Input Signal:
0-100%
Working Temp:
Package Size:
L175×W46×H30(mm)
Dimensions:
L187×W52×H36(mm)
Weight(G.W.): 325g±5g
-30°C-55°C
Green terminal
DMX Signal Port:
Short circuit, over temperature, over
current protection, auto recovery.
Protection:
Max.8A/CH  Max.24A(4CH)
0-96W...384W/CH Max.1152W(4CH)
1
5-year
warranty

M
Product Size
Unit: mm
Main Component Description
Digital Display:
M4-C DMX/RDM CV Decoder
2
175mm
46mm
165mm
30mm
M4-C
M
DM X IN
D+ D GN D GND
D+ D
DM X OUT
DMXIN
DMXOUT
LED Lamp Connection
CV Power Input
Digital Display
Access configuration: Long press the M button for more than 2s.
Adjust Value: Short press∧ or∨ button.
Exit Menu: Long press M button for 2s again to save the setting, then exit the menu.
Long press M,∧and ∨ button simultaneously for 2s. When the screen displays RES,
it has been reset to factory defaults.
The display locks automatically after 15 seconds of inactivity.
Wire diameter: 1-2.5 (18-12AWG)
Strip length:6-7mm
Wire diameter: 1.5-4 (16-10AWG)
Strip length:7-8mm
Wire diameter: 1-2.5 (18-12AWG)
Strip length:7-8mm

OLED Display Interface
M4-C DMX/RDM CV Decoder
3
DMX mode
The default is DMX mode for this product. Long press "M" + "∧" button simultaneously for
more than 2s to switch to the DMX mode.
In customized mode, when the device receives DMX/RDM data, it will automatically switch
to the DMX mode.
（1）Long press the "M" button for more than 2s to configure the DMX address.
（2）Press the "∨" or "∧" button to adjust the address value, long press "∨" or "∧" button
to gradually increase the changing speed of address value.
（3）After parameter settings are completed, long press the SETUP button for more than
2s to save the configuration.
Long press "M" button for more than 2s to configure the display;
Press "∧"or"∨"button to select the displayed value. The third value on the screen display
1~9 or A.
e.g.E-A (7-color gradient)
e.g. E-1 ( no lighting effect)
Long press "M" + "∧" button simultaneously for more than 2s to switch to the customized
mode.
The default OLED display: E-2
Customized mode
E-1 (no lighting effect)
E-2 (Red)
E-3 (Green)
E-4 (Blue)
E-5 (Yellow)
E-6 (Purple)
E-7 (Cyan)
E-8 (White)
E-9 (7-color jumping)
E-A (7-color gradient)
Options:
M
M
M
M

1
3
2
PUSH
1
3
2
PUSH
Wiring Diagram
If the recoil effect occurs because of long signal line or poor quality wires, please try to connect a 0.25W 90-120Ω terminal resistor at
the end of each line.
When more than 32 DMX decoders are connected, DMX signal amplifiers are needed and signal amplification should not be more than
5 times continuously. If you need to modify the parameter settings of connected DMX/RDM decoders that exceed 32, you can add 1 RDM
signal amplifier. Or you can add 1-5 DMX signal amplifiers after completing the parameter settings.
M4-C DMX/RDM CV Decoder
4
GND
D+
D-
M4-C
M
M
M
24V+
G
R
B
W
24V+
G
R
B
W
24V+
G
R
B
W
M4-C
M4-C
DMX I N
D+ D GN D GND
D+ D
DMX O UT DMX I N
D+ D GN D GND
D+ D
DMX O UT DMX I N
D+ D GN D GND
D+ D
DMX O UT
DMX/RDM OutputDMX/RDM Input
Constant voltage
power supply
12-48Vdc
DMX/RDM
Input
DMX
console
DMX/RDM OutputDMX/RDM Input
Constant voltage
power supply
12-48Vdc
Constant voltage
power supply
12-48Vdc

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 product must be installed and adjusted by a qualified professional.
This product is non-waterproof (special models excepted). Please avoid the sun and rain. When installed outdoors, please ensure it is
mounted in a water proof enclosure.
Good heat dissipation will extend the life the product. Please install the product in a environment with good ventilation.
When you install this product, please avoid being near a large area of metal objects or stacking them to prevent signal interference.
Please keep the product away from aintensemagneticfield, a high pressure area or a place where lightning is easy to occur.
Please check whether the working voltage used complies with the parameter requirements of the product.
Before you power on the product, please make sure all the wiring is correct in case of incorrect connection that may cause a short
circuit and damage the components, or trigger a accident.
If a fault occurs, please do not attempt to fix the product by yourself. If you have any question, please contact the supplier.
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.
Update Time: 02/03/2023_A0
5
M4-C DMX/RDM CV Decoder