Indoor SMD Full Color D2.

5 32S
1.Scope of application

Mainly used in military exercise command system, public safety display command system, studio,
radio and television media display system and other fields.

2. Production Feature

●Product version: The refresh rate of this product is divided into conventional versions (1920Hz)
and TOP version (3840Hz) for details. Refer 5.4
●Indoor D series has uniform kit size and hole position, and the cabinet hole position can be
●used in common; it can be spliced at right angles with bevel kits;
Select high-quality surface-mounted 2121 special lamps, the ink color of the screen is uniform,
the consistency is good, and the color of the screen is more realistically restored;
●Dedicated driver chip for LED high-density full-color screen: Eliminate lower ghosts and open
crosses, increase frequency multiplication refresh rate by 2/4/8 times, improve functions such as
low gray color cast, low gray pitting and dark first line, etc., anti-interference Excellent ability;
●High-definition display: high-resolution brings high-definition and delicate display effect, and
can achieve the effect of pixel-to-pixel real-time display, without flickering or graininess;
●High grayscale, ultra-broadband load: grayscale 12~14Bits adjustable, clear and real display
quality, bright and smooth playback effect;
● Good flatness: more enhanced structure bottom shells of independent research and
development and production, not easy to deform;
●Easy installation and maintenance: the bottom shell of the unit board adopts a quick-release
magnetic back cover, which is easy to install.

Module Picture

Front View Back View

 3.Production Parameter

Module Parameter
Pixel 2.5mm Input voltage 4.2-5.0V Weight 0.41kg±0.01kg
Lamp color 1R1G1B Module Power ≤19W Material PC
Size 320*160*15mm Max Current 3.5A±0.3A Copper nut 6*8*M4
Structural in-built driver Pixel density 160000/㎡ Scan Mode 1/32
LED Lamp SMD2121 Resolution 128*64=8192Dots

Cabinet Parameter

Die-cast aluminum box 640mm*480mm*70mm Average power consumption ≤45.6W

Cabinet Resolution 256*192=49152 Dots Max power consumption ≤114W
Cabinet Area 0.3072 ㎡
Cabinet Weight 4.1kg±0.05kg

Screen Parameter

Brightness 500-550cd/㎡ Brightness uniformity ＞0.97

Horizontal viewing angle 140±10° Vertical viewing angle 130±10°
Best visual distance ≥2.5m
Max power per square ≤371.1w/m²
Distribution power(Max power per square ÷78％÷85％) 559.7W/m²

Control System Parameter

Gray level Red,Green,Blue.12-16bits Display color 16777216

Frame change frequency ≥60FPS Refresh rate ≥1920/3840HZ
Control mode Synchronous/Asynchronous Bright adjustment 256 level
Input signal DVI VGA RGBHV S-Video... etc.

System operating characteristics

Service life ≥100000hrs MTBF ≥10000hr

Attenuation rate (working 3 years) ≤15% Failed Rate ＜0.0001
Operating Environment Temperature -20℃~+50℃;Humidity, 10%~65%RH.
4.SMD 2121 Parameter

Color Wavelength(nm) light Reverse Test Light Forward

Color temperature(K) intensity(mcd) current IR angle Voltage
（uA） (Typ.) (V)(Typ.)
(Typ.) Min Max VR = 8V

R 619-622 60 180 1 IF=15 115° 1.8-2.3

MA
G 515-527 40 120 1 IF=10 115° 2.5-3.0
MA
B 465-470 150 450 1 IF=10 115° 2.5-3.0
MA

5.Constant current driver IC and Raw Chip

Constant current IC :

This constant current IC is a driver IC specially designed for full-color LED display, with 16
channels of PWM constant current output, 1~32 sweeps at random. It integrates "Noise Free TM"
technology, which has excellent anti-interference characteristics, so that the constant current and
low gray effect are not affected by the PCB board. Different external resistors can be selected to
adjust the current of the output stage to precisely control the luminous brightness of the LED.

≥1920hz features ≥3840hz features

Has the function of improving lamp bead Integrated lower ghost removal function
damage
With blanking function Integrated lamp bead protection circuit to
reduce lamp bead damage
Excellent anti-interference ability and low Eliminate open caterpillars and dead crosses
grayscale effect
Improve the caterpillar phenomenon caused by Effectively solve low gray blocks, color cast,
lamp bead damage pitting, and dark first line
Integrated double cache, the refresh rate is
more than 50% higher than that of general
constant current chips
Row chip

The driver chip is a row driver tube specially designed for LED scanning screen. It integrates
138 decoding circuit and power PMOS tube. It adopts SOP16 package type, integrated internal
anti-burning power tube, eliminate ghosts and LED lamp bead protection. Other functions.
Characteristics
Integrated 138 decoding circuit
Integrated 8 power PMOS output PIN, on-resistance 100 mΩ, maximum current 2.5A
Input open circuit, input lock self-test function, anti-burn power PMOS tube
LED display eliminates ghosting
Improve the caterpillar phenomenon caused by the short-circuiting of the LED display bead
Integrated anti-LED lamp bead reverse breakdown regulator circuit

Pin definition

Constant current driver IC Row chip

Pin description

Name Constant current driver

GND Chip ground
SDI Serial data input port
CLK Clock signal input port, clock rising edge
LE Data latch control port
OUT0～OUT15 Constant current source output port
OE Output enable control port;
SDO Serial data port, which can be connected to the SDI port of the next chip;
R-EXT Connect the input port of the external resistor;
VDD Chip power supply
Name Row driver
VDD Power supply
A0-A2 Data input
OUT0-OUT7 Current output
E1-E2 Enable control
GND Ground terminal
6.Power Parameter

Power supply Module brightness Recommended drive Remark

Recommend
4.5V 40A 500-550cd/㎡ 6-8 Pieces 4.2V only support TOP
4.2V 40A 500-550cd/㎡ 6-8 Pieces version

Kystar
G612C G616C
1W12H 128*768dots 1W16H 128*1024dots
Colorlight
5A75E
1W12H 128*768dots
Novastar
DH7512 DH7516
1W12H 128*768dots 1W10H 128*1024dots
7.Pin header signal pin definition(HUB75E)

PIN Map PIN Function Description

PIN Function Remarks PIN Function Remarks
1 ● ● 2 1 R1 Red data signal 2 G1 Green data signal
3 ● ● 4 3 B1 Blue data signal 4 GND Power ground
5 ● ● 6 5 R2 Red data signal 6 G2 Green data signal
7 ● ● 8 7 B2 Blue data signal 8 E E scan signal
9 ● ● 10 9 A A scan signal 10 B B scan signal
11 ● ● 12 11 C C scan signal 12 D D scan signal
13 ● ● 14 13 CLK Clock latch signal 14 LAT Shift latch signal
15 ● ● 16 15 OE Enable signal 16 GND Power ground

8.Housing mounting hole bitmap

9.Cabinet installation diagram

10.Display simple connection schematic diagram

16.Product repair

◆ Repair welding LED tube: It is recommended to use a heat gun (removing station), and the

12.Full screen acceptance requirements and methods

◆ Brightness of the screen: adjust the screen to full brightness, adjust the brightness
efficiency in the test software to 80% on the computer, and use a light gun to measure the
brightness of the screen within 10 minutes. When measuring brightness, it is required that
the light gun should be aimed at the screen. It is best to keep the light gun level with the
screen during measurement. Make sure that the black position of the observation window
covers more than 16 pixels. Adjust the focal length so that you can clearly see the
luminous point. Then measure and read;
◆Visual angle: During the measurement, people stand at a position of 140 ° left and
right, and watch the 70 ° position of the lower view angle of the screen (that is, the vertical
angle of the screen body is 140 °).
◆Grounding: The structure of the switching power supply shell, cabinet, and screen is
properly grounded, and the grounding point is correctly marked with a grounding mark.
The grounding resistance is required to be ≤ 10 ohms, and a spot check is performed
every six months;
◆Lightning protection treatment: It is required that the buildings have lightning rods or
lightning protection belt facilities and be effectively grounded. It is required that the
distribution box should be equipped with a surge protector. The lightning protection
facilities should be inspected every six months.