Product Description
SMD2121 P2.5 Indoor Front Service Fixed HD LED Display screen With Meanwell Power Supply
Specification:
| Light Chip | |||
| Type | SMD1515 | Chip parameters | Red λd:(620-625nm) IV:(800-960mcd) |
| Color | 1R1G1B | Chip parameters | Green λd:(520-525nm) IV:(1350-1650mcd) |
| Brand | Epister | Chip parameters | Blue λd:(470-475nm) IV:(330-400mcd) |
| LED Module | |||
| Pixel Pixel | 2.5 mm | Module Size | 160 mmWX160 mmH |
| Module Resolution | 64×64=4096(Dots) | Module Weight | 0.2kg |
| LED Display Cabinet | |||
| Pixel Density | 160000 Dots/m2 | Frame Frequency | no less than 60 frame/sec |
| Cabinet Resolution | 192×192=36864(Dots) | Input Voltage | AC110-220V±10%,50/60Hz |
| abinet Dimension(W*H*D) | 480x 480 x 80mm | Output Voltage | DC-5V,40A/60A/80A |
| Module Quanty /Cabinet | 9 pcs = 3 (w) x 3(h) | Grey Scale Levels | 16bit |
| Cabinets Material | Die-casting Alminum Cabinet | Color Processing | R(1571)×G(1571)×B(1571) |
| Cabinet Weight | 9 kg | Brightness Adjustment | 256 color levels |
| Brightness | ≥1000 nits | MTBF( mean time between failures) | 5000 hours |
| Viewing Angle | Horizontal 140°, Vertical 140° | Life-span | 100,000 hours |
| Nearest Viewing Distance | 3 meter | Protection Level(front/back) | IP45 |
| Power Consumption (Max) | 800 w/m2 | Malfunction Dot Rate | less than 0.0001 |
| Power Consumption (Average) | 200 w/m2 | Working Temperature | -30ºC~50ºC |
| Display Function | Text,Graphics,Video | Humidity | 15%~85% |
| Refresh Rate | ≥2000Hz | Scan Mode | 1/32 |
| Control System | |||
| Control Mode | Synchronization/Asynchronization | Control System | Sending Card, Receiving Card,Receiving HUB |
| PC Operating System | Microsoft Windows 7, XP and Vista | Software | ED Studio Nova/Linsin |
| Communication Type | Net cable,3G,WIFI(Sold separately) | Control Card Input | DVI,USB,RJ45,HDMI(Sold separately) |
| Language | Chinese,Traditional Chinese,English,French,Japanese,Russian, Thai,Spanish,Polish,Italian,Portuguese,Turkish,Dutch,Greek,Bulgarian, Romanian,Arabic |
||
Product description:
1.High resolution: there are 160,000 pixels per square, and the best viewing effect can be obtained at a visual distance of 2 to 30 meters from the screen.
2. Non-linear correction technology, the image is clearer and the layering is stronger.
3. High performance: The flatness coefficient of the module and the module is <0.5mm, and the power factor is over 88%;
Module:
4. Super detection function: real-time detection of whether the pixels in the screen are invalid, and the working status of remotely transmitting pixels;
5. Low fever: The air conditioner can be used without refrigeration.
6. Durability: The light-emitting module is guaranteed for 10 years, the mask is not reflective, UV-resistant, and does not fade for 5 years;
7. Dual backup running system to ensure the display screen works normally;
8. The remote networked intelligent control system can realize remote synchronization or time-sharing control of several cities’ display screens.
Widely used in museums, planetariums, science and technology museums, children’s palaces, exhibition halls, gymnasiums, waiting halls, star hotels, large open spaces, railway stations, ports, shopping malls, bars and other places.
Application:
Company information:
JINGCAN led factory’s main products areconsist of rental led display, advertising led screen,
football stadiumperimeter, stage background video wall, traffic guiding display, special-shaped display like curve and round, led moving light, led Par light, led modules andlaser light, etc.
The outstanding features of our led products areenvironmental-friendly, energy-saving and long life-span. All of our LEDproducts have approved by CCC, CE, ROHS, FCC, ISO9001 quality certificates authorities. Furthermore, our LED products were exported to more than 90countries
till now such as Sweden, USA, Brazil, France, Japan, Thailand, Italy,Australia, Spain and etc. Those LED products were widely used in both indoorand outdoor places like hall, hotel, exhibition room, public square, symbols,building and TV stage background and etc.
JINGCAN LED FACTORY Main LED Display Product Lines – Automatical Machines
Qualification Honor:
Product Project:
Packing and Shipping:
Packing: Anti-shaking wooden cabinet/Air flight case/strong carton
Shipping port: HangZhou, China
Shipping way:Air;Express;Ocean;Land Transportation
Delivery time: 7-15 working days after confirm receipt payment in advance.
Long working life: In the Maintenance period, free of all maintenance charge.After maintenance period only charge the material costs fees.
FAQ:
Q1. Can I have a sample order for led Screen?
A: Yes, we welcome sample order to test and check quality. Both for LED moduel or
a whole screen.
Q2. What about the lead time?
A:About 7~10 working days.
Q3. Do you have any MOQ limit for led light order?
A: Low MOQ, 1 square meter or a moudle checking is available
Q4. How do you ship the goods and how long does it take to arrive?
A: We mostly accectp FOB train term, but we can help you order and arrange shipping agent.
It usually take 20 30 day on sea. a few days for customer clearance
Q5. How to proceed an order for led Screen?
A: Firstly let us know your requirements or application.
Secondly We quote according to your requirements or our suggestions.
Thirdly customer confirms the design document and places deposit for formal order.
Fourthly We arrange the production.
Q6: Do you offer guarantee for the products?
A: Yes, we offer 2 years warranty to our products.
Q7: How to deal with the faulty?
A: Our products are produced in strict quality control system and the defective rate will be less
than 0.2%.
Our service:
1. Your inquiry about our products or the price will be replied within 24 hours!
2. We provide 2 years for warranty and lifelong maintaining, you will appreciate our warm after-sale service.
3. We will delivery goods as you demand, you can choose the cheaper and more convenient way!
4. Apart from the Outdoor LED Display, Visionled also can offer you LED Pharmacy Cross Display,
LED Flexible Display, Indoor LED Display, LED Gas Price Signs, Indoor/outdoor LED Signs
How to tell if your driveshaft needs replacing
What is the cause of the unbalanced drive shaft? Unstable U-joint? Your car may make clicking noises while driving. If you can hear it from both sides, it might be time to hand it over to the mechanic. If you’re not sure, read on to learn more. Fortunately, there are many ways to tell if your driveshaft needs replacing.
unbalanced
An unbalanced driveshaft can be the source of strange noises and vibrations in your vehicle. To fix this problem, you should contact a professional. You can try a number of things to fix it, including welding and adjusting the weight. The following are the most common methods. In addition to the methods above, you can use standardized weights to balance the driveshaft. These standardized weights are attached to the shaft by welders.
An unbalanced drive shaft typically produces lateral vibrations per revolution. This type of vibration is usually caused by a damaged shaft, missing counterweights, or a foreign object stuck on the drive shaft. On the other hand, torsional vibrations occur twice per revolution, and they are caused by shaft phase shifts. Finally, critical speed vibration occurs when the RPM of the drive shaft exceeds its rated capacity. If you suspect a driveshaft problem, check the following:
Manually adjusting the imbalance of a drive shaft is not the easiest task. To avoid the difficulty of manual balancing, you can choose to use standardized weights. These weights are fixed on the outer circumference of the drive shaft. The operator can manually position the weight on the shaft with special tools, or use a robot. However, manual balancers have many disadvantages.
unstable
When the angular velocity of the output shaft is not constant, it is unstable. The angular velocity of the output shaft is 0.004 at ph = 29.5 and 1.9 at t = 1.9. The angular velocity of the intermediate shaft is not a problem. But when it’s unstable, the torque applied to it is too much for the machine. It might be a good idea to check the tension on the shaft.
An unstable drive shaft can cause a lot of noise and mechanical vibration. It can lead to premature shaft fatigue failure. CZPT studies the effect of shaft vibration on the rotor bearing system. They investigated the effect of flex coupling misalignment on the vibration of the rotor bearing system. They assume that the vibrational response has 2 components: x and y. However, this approach has limited application in many situations.
Experimental results show that the presence of cracks in the output shaft may mask the unbalanced excitation characteristics. For example, the presence of superharmonic peaks on the spectrum is characteristic of cracks. The presence of cracks in the output shaft masks unbalanced excitation characteristics that cannot be detected in the transient response of the input shaft. Figure 8 shows that the frequency of the rotor increases at critical speed and decreases as the shaft passes the natural frequency.
Unreliable
If you’re having trouble driving your car, chances are you’ve run into an unreliable driveshaft. This type of drivetrain can cause the wheels to stick or not turn at all, and also limit the overall control of the car. Whatever the reason, these issues should be resolved as soon as possible. Here are some symptoms to look for when diagnosing a driveshaft fault. Let’s take a closer look.
The first symptom you may notice is an unreliable drive shaft. You may feel vibrations, or hear noises under the vehicle. Depending on the cause, it could be a broken joint or a broken shaft. The good news is that driveshaft repairs are generally relatively inexpensive and take less time than a complete drivetrain replacement. If you’re not sure what to do, CZPT has a guide to replacing the U-connector.
One of the most common signs of an unreliable driveshaft is clanging and vibration. These sounds can be caused by worn bushings, loose U-joints, or damaged center bearings. This can cause severe vibration and noise. You can also feel these vibrations through the steering wheel or the floor. An unreliable driveshaft is a symptom of a bigger problem.
Unreliable U-joints
A car with an unreliable U-joint on the drive shaft can be dangerous. A bad u-joint can prevent the vehicle from driving properly and may even cause you trouble. Unreliable u-joints are cheap to replace and you should try getting parts from quality manufacturers. Unreliable U-joints can cause the car to vibrate in the chassis or gear lever. This is a sure sign that your car has been neglected in maintenance.
Replacing a U-joint is not a complicated task, but it requires special tools and a lot of elbow grease. If you don’t have the right tools, or you’re unfamiliar with mechanical terminology, it’s best to seek the help of a mechanic. A professional mechanic will be able to accurately assess the problem and propose an appropriate solution. But if you don’t feel confident enough, you can replace your own U-connector by following a few simple steps.
To ensure the vehicle’s driveshaft is not damaged, check the U-joint for wear and lubrication. If the U-joint is worn, the metal parts are likely to rub against each other, causing wear. The sooner a problem is diagnosed, the faster it can be resolved. Also, the longer you wait, the more you lose on repairs.
damaged drive shaft
The driveshaft is the part of the vehicle that connects the wheels. If the driveshaft is damaged, the wheels may stop turning and the vehicle may slow down or stop moving completely. It bears the weight of the car itself as well as the load on the road. So even a slight bend or break in the drive shaft can have dire consequences. Even a piece of loose metal can become a lethal missile if dropped from a vehicle.
If you hear a screeching noise or growl from your vehicle when shifting gears, your driveshaft may be damaged. When this happens, damage to the u-joint and excessive slack in the drive shaft can result. These conditions can further damage the drivetrain, including the front half. You should replace the driveshaft as soon as you notice any symptoms. After replacing the driveshaft, you can start looking for signs of wear.
A knocking sound is a sign of damage to the drive shaft. If you hear this sound while driving, it may be due to worn couplings, damaged propshaft bearings, or damaged U-joints. In some cases, the knocking noise can even be caused by a damaged U-joint. When this happens, you may need to replace the entire driveshaft, requiring a new one.
Maintenance fees
The cost of repairing a driveshaft varies widely, depending on the type and cause of the problem. A new driveshaft costs between $300 and $1,300, including labor. Repairing a damaged driveshaft can cost anywhere from $200 to $300, depending on the time required and the type of parts required. Symptoms of a damaged driveshaft include unresponsiveness, vibration, chassis noise and a stationary car.
The first thing to consider when estimating the cost of repairing a driveshaft is the type of vehicle you have. Some vehicles have more than one, and the parts used to make them may not be compatible with other cars. Even if the same car has 2 driveshafts, the damaged ones will cost more. Fortunately, many auto repair shops offer free quotes to repair damaged driveshafts, but be aware that such work can be complicated and expensive.
