Introduction
The D4-P and D4-E are 4-channel constant voltage DMX512 and RDM decoders designed for professional LED lighting control. They offer advanced features such as RDM communication, selectable PWM frequencies, and multiple protection mechanisms.
Images show the D4-P and D4-E models, which are compact 4-channel constant voltage DMX512 and RDM decoders.
Key Features
- Comply with the DMX512 standard protocols.
- Digital numeric display, set DMX decode start address by buttons.
- RDM function can realize intercommunication between DMX master and decoder. For example, DMX decoder address can be set by DMX master console.
- 1/2/4 DMX channel output selectable.
- 16bit (65536 levels) / 8bit (256 levels) grey level selectable.
- PWM frequency 250/500/1000/2000/4000/8000/16000Hz selectable.
- Logarithmic or linear dimming curve selectable.
- Over-heat / Over-load / Short circuit protection, recover automatically.
- D4-P has Green terminal DMX signal ports, D4-E has RJ-45 DMX signal ports.
Technical Parameters
| Parameter | Details | Environment | Details | Warranty and Protection | Details | Weight | Details |
|---|---|---|---|---|---|---|---|
| Input voltage | 12-48VDC | Operation temperature | Ta: -30°C ~ +55°C | Warranty | 5 years | Net weight | 276g |
| Input current | 32.5A | Case temperature (Max.) | Tc: +75°C | Protection | Reverse polarity Over-heat Over-load Short circuit | Gross weight | 295g |
| Output voltage | 4 x (12-48)VDC | IP rating | IP20 | ||||
| Output current | 4x8A@12/24V 4x6A@36/48V | ||||||
| Output power | 4x96W @12V 4x192W@24V 4x216W@36V 4x288W@48V | ||||||
| Output type | Constant voltage |
Safety and EMC
| Standard | Details |
|---|---|
| EMC standard (EMC) | ETSI EN 301 489-1 V2.2.3 ETSI EN 301 489-17 V3.2.4 |
| Safety standard (LVD) | EN 62368-1:2020+A11:2020 |
| Certification | CE, EMC, LVD |
Mechanical Structures and Installations
The mechanical structure section illustrates the physical dimensions of the decoders (approximately 175.00 mm length, 46.00 mm height, 24.00 mm width). It details the placement of the digital display, DMX input/output ports (green terminal blocks for D4-P, RJ45 connectors for D4-E), installation rack, and a setting key for configuration. Output ports for White, Blue, Green, Red LEDs, and power input are also indicated.
D4-P Ports: Digital display, DMX input/output (green terminal), Installation rack, Setting key, Power input (+/-), Output LED ports (White, Blue, Green, Red, +).
D4-E Ports: Digital display, DMX input/output (RJ45), Installation rack, Setting key, Power input (+/-), Output LED ports (White, Blue, Green, Red, +).
Dimensions shown: 175.00 mm (length), 46.00 mm (height), 24.00 mm (width). Terminal block dimensions: 32.00 mm, 24.00 mm.
Wiring Diagram
The wiring diagram shows the connection flow: A DMX Master connects to the DMX In/Out ports of the D4-P decoder. The decoder receives power from a 12-48VDC constant voltage power supply, which itself is connected to an AC 100-240V source. The decoder's outputs connect to a RGBW LED strip. The diagram also indicates DMX signal pins (D+, D-, GND) for RJ45 connectors.
Note:
- An DMX signal amplifier is needed if more than 32 decoders are connected, or use overlong signal line. Signal amplification should not be more than 5 times continuously.
- If the recoil effect occurs because of longer signal line or bad line quality, please try to connect a 0.25W 90-120Ω terminal resistor at the end of each DMX signal line.
Operation
System Parameter Setting
Long press the [M button] and [Up arrow] key simultaneously for 2 seconds to enter system parameter setup. Parameters include: decode mode, grey level, output PWM frequency, output brightness curve, default output level, and automatic blank screen. Short press the [M button] to cycle through these six items.
- Decode Mode: Short press the [Up arrow] or [Down arrow] key to switch between 1/2/4 channel decode modes ("d-1", "d-2", or "d-4"). In 1-channel decode mode, the decoder uses only 1 DMX address, and all four channels output the same brightness.
- Grey Level: Short press the [Up arrow] or [Down arrow] key to switch between 8bit ("b08") or 16bit ("b16"). Select 16bit if the DMX master supports it.
- Output PWM Frequency: Short press the [Up arrow] or [Down arrow] key to select frequency: 250Hz ("F02"), 500Hz ("F05"), 1000Hz ("F10"), 2000Hz ("F20"), 4000Hz ("F40"), 8000Hz ("F80"), or 16000Hz ("F16"). Higher PWM frequencies may result in lower output current and higher power noise but are more suitable for cameras (reducing flicker).
- Output Brightness Curve: Short press the [Up arrow] or [Down arrow] key to select between a linear curve ("C-L") or a logarithmic curve ("C-E").
- Default Output Level: Press the [Up arrow] or [Down arrow] key to set the default 0-100% output level ("d00" to "dFF") when no DMX input signal is present.
- Automatic Blank Screen: Short press the [Up arrow] or [Down arrow] key to enable ("bon") or disable ("boF") the automatic blank screen function.
Long press the [M button] for 2 seconds or wait for a 10-second timeout to exit system parameter setting.
DMX Mode
- Short press the [M button]. When "001~512" is displayed, the decoder enters DMX mode.
- Press the [Up arrow] or [Down arrow] key to change the DMX decode start address (001~512). Long press for faster adjustment.
- If a DMX signal is detected, the decoder will automatically enter DMX mode.
- DMX Dimming: Each D4-P/D4-E decoder occupies 4 DMX addresses when connected to a DMX console. For example, if the defaulted start address is 1, the channel mapping is as follows:
DMX Console Channel DMX Decoder Output CH1 (0-255) CH1 PWM 0-100% (LED R) CH2 (0-255) CH2 PWM 0-100% (LED G) CH3 (0-255) CH3 PWM 0-100% (LED B) CH4 (0-255) CH4 PWM 0-100% (LED W)
Display showing "001~512" indicates DMX mode.
Self-test Mode
- Enter self-test mode only when the DMX signal is disconnected or lost.
- Short press the [M button]. When "L-1~L-5" is displayed, the decoder enters self-test mode.
- Press the [Up arrow] or [Down arrow] key to change the mode number (L-1 to L-5).
- Self-test mode includes options for all four channels lighting up separately or synchronously.
Display showing "L-1~L-5" indicates Self-test mode.
Dimming Curve Setting
Dimming curve settings are illustrated with two graphs. The 'Linear dimming curve' (Gamma=1.0) shows a direct proportional relationship between brightness (%) and PWM duty (%). The 'Logarithmic dimming curve' (Gamma=1.6) shows a non-linear, curved relationship, typically used for more natural-looking light transitions.
Linear Dimming Curve: X-axis: Brightness (%), Y-axis: PWM Duty (%). A straight line from (0,0) to (100,100) is shown.
Logarithmic Dimming Curve: X-axis: Brightness (%), Y-axis: PWM Duty (%). A curved line is shown, where lower brightness levels require a higher PWM duty percentage compared to a linear curve.
Malfunctions Analysis & Troubleshooting
| Malfunctions | Causes | Troubleshooting |
|---|---|---|
| No light | 1. No power. 2. Wrong connection or insecure. | 1. Check the power. 2. Check the connection. |
| Wrong color | 1. Wrong connection of R/G/B/W wires. 2. DMX decode address error. | 1. Reconnect R/G/B/W wires. 2. Set correct decode address. |
| Uneven intensity between front and rear, with voltage drop | 1. Output cable is too long. 2. Wire diameter is too small. 3. Overload beyond power supply capability. 4. Overload beyond controller capability. | 1. Reduce cable or loop supply. 2. Change to wider wire. 3. Replace with higher power supply. 4. Add power repeater. |
