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Frequently Asked Questions

As the name would suggest, this section is a compilation of answers to the questions our clients commonly ask. Just start by following one of the questions below. If you think of a question that is not on this list, please click “Ask a Question” and let us know what you think.

LED Display Screen

LED is short for light-emiting diode. LED screens are made from many smaller light emitting diodes placed close together.

Each LED emits three colors – Red, Green and Blue – which together light up as needed to create a range of colors. The colors combine to create an image.

Pixel is the diminutive for picture element. Pixels are points of light that illuminate at the same time to form letters, words, animations and videos. A pixel can be formed of one or more LEDs of the same color or of several colors. A pixel is the smallest element of a LED screen (or LED wall) that can be individually monitored. It can be switched off or switched on at different intensity levels.

Pixel pitch is the distance between the center of an LED and the LED next to it. The smaller the pixel pitch, the better the resolution and picture quality of the LED.

While traditional LCD screens are typically used inside, LEDs are effective in practically any environment. They are designed to remain bright and visible even under direct sunlight and withstand most weather conditions. Unlike LCD screens, they are extremely durable and can be used for projects on a much larger scale.

LED screens can be used for practically anything. Any image or video can be shown on them. Our engineers here at Street Communication can manipulate LED screens into a wide range of shapes and sizes, creating endless possibilities. Furthermore, LEDs work well both indoors and outdoors as they are exceptionally durable.

Choosing a screen is difficult because many factors need to be taken into account. Typically screens with smaller pixel pitches are superior indoors, while those with larger are better outside. We offer consultancy to help you reach a decision, so please reach out to us.

Making the smartest choice for your LED display can be difficult depending on the context of your project. The viewing angle depends on the brightness of the screen. Depending on the angle the viewer is watching the screen, colors and saturation can vary and give the image a blur effect. To chose your display wisely, read more on viewing angles.

Before choosing your display your should know a few tricks that will help you take the right direction. Depending on the viewing distance needed for the project, the pixel pitch of the LED  display is the first information you want to look for, read more on pixel pitch, resolution and ideal viewing distance here.

(1) to display content

(2) visual distance, the perspective of the confirmation

(3) Screen resolution requirements

(4) installation of environmental requirements

(5) cost control

Video projectors often seem like an easier and cheaper solution, but they dont display the same quality image, the same brightness and can’t adapt to any context like innovative LED displays do.

Not. Demanding outdoor screen installation structure, SMD LED unable to adapt to the harsh outdoor environment.The outdoor screen brightness higher, SMD LED unable to meet the outdoor screen brightness.

Graphic screen: to determine the content displayed; Video Screen: general close to 4:3 or 4:3; the ideal ratio is 16:9.

(1) procurement of raw materials: the LED lamp procurement cycle is longer, especially imported die, order cycle takes 4-6 weeks;

(2) The production process is complex: subject to the PCB design, production casing, plastic irrigation, adjusting white balance;

(3) strict structural requirements: the general cabinet design, the need to consider the wind, rain, lightning.

(1) light-emitting part: module full color display module is generally green and yellow, pure green module expensive; SMD full color generally use pure green core.

(2) display: Module full color pixel visual feeling of thick, low brightness, easy mosaic phenomenon; SMD full color consistency is better, higher brightness.

(3) Maintenance: module difficult to maintain full-color, high replacement costs of the entire module; SMD full color and easy to maintain, repair and replacement of a single lamp.

Cause of failure:

1.There is no power supply for the screen;

2.The network cable is not connected properly;

3. The receiving card has no power supply or the power supply voltage is too low;

4.The sending card is broken;

5.Connection or failure of signal transmission intermediate equipment (such as function card and optical fiber transceiver box);

Troubleshooting methods:

1.Check and confirm that the power supply of the screen is normal;

2.Check and reconnect the network cable;

3.Ensure that the DC output power supply of the power supply is 5-5.2v;

4.Replace the sending card;

5.Check the connection or replace the function card (optical fiber transceiver)

Cause of failure:

1. DVI or HDMI cable is not connected properly;

2.The copy or expansion mode in the graphics card control panel is not set;

3.The software chooses to turn off the power supply of the large screen;

4.The sending card is not inserted in place or there is a problem with the sending card;

Troubleshooting methods:

1.Check DVI cable connector;

2.Reset the copy mode;

3.The software selects to turn on the large screen power supply;

4.Reinsert the sending card or replace the sending card

Cause of failure:

1.The serial port cable or USB cable is not connected with the sending card;

2.Computer com or USB port is broken;

3.The serial port cable or USB cable is broken;

4.The sending card is broken;

5.USB driver is not installed

Troubleshooting methods:

1.Confirm and connect the serial port cable;

2.Replace the computer;

3.Replace the serial port cable;

4.Replace the sending card;

5.Install new software or separate USB driver

Cause of failure:

1.Poor contact or disconnection of flat cable or DVI cable (applicable to submarine Series);

2.There is a problem with the former output or the latter input of the display light panel at the junction

Troubleshooting methods:

1.Reinsert or replace the cable;

2.First determine which display module is faulty, and then replace it for maintenance

Cause of failure:

1.Power protection or damage;

2.Poor contact of AC power line

Troubleshooting methods:

1.Check and confirm that the power supply is normal;

2.Reconnect the power cord

Cause of failure:

1.220V power supply line is not connected properly;

2.There is a problem with network cable transmission;

3. The receiving card is damaged;

4.Dislocation of hub board

Troubleshooting methods:

1.Check the power supply line;

2.Confirm to replace the network cable;

3.Replace the receiving card;

4.Reinsert hub

Cause of failure:

1.The driver loader is incorrect;

2.The network cable of computer and screen is too long or of poor quality;

3.Sending card is broken

Troubleshooting methods:

1.Reload the receiving card file;

2.Reduce the length of network cable or replace it;

3.Replace the sending card

Cause of failure:

1.Check the communication line between the computer and the large screen;

2.Check the DVI cable between the multimedia card and the sending card;

3.The sending card is broken.

Troubleshooting methods:

1.Reinsert or replace the communication line;

2.Punching and reinforcing DVI # line;

3. Replace the sending card.

Digital Signage Display

Digital signage is a network of customizable digital displays that you can control electronically using a computer, allowing you to change your content remotely for the most targeted messaging possible. Digital signage networks allow you to create and deliver targeted messages that inform, educate and motivate your audiences without your budget taking a painful hit.
Changing digital signage is cost effective and can be done in seconds from one location. It allows the network user to send content to an infinite number of displays at one time.

Each reason for communicating will have its own benefits:

1.To compel -student organizations and activities, benefits enrollment, charity drives.
2.To inform – new policies at work, classes and training dates, way finding and directories,weather and news.
3.To motivate -recognition and reward programs, stock prices and profit-sharing schemes, internal contests.
4.To include -welcome messages, new hire and birthday announcements, community and social activities.
5.To recognize – organization and individual achievements, safety benchmarks, sports teams stats.
6.To warn – severe weather, fire and other emergencies, security threats.

After Switch connection between the control computer and the matrix, change the control computer IP to the same network segment with matrix IP, and then the IP address of the software search matrix is opened.

First,check whether the mouse is connected to the USB port of the matrix, and then check whether it is logged in to the device

After selecting the screen to be spliced by software, drag the device IP into the chosen splicing screen.

Check whether the indicator light of the network port at the back panel of the matrix works normally (green light is always on, and clear light is blinking).

A standalone LCD advertising player is an LCD displays with an integral media player that holds the advertisements content files locally on a memory card. Just copy Video/music/pictures from PC into SD card/USB key, then insert it into player, it will play the saved files automatically, no need any other software and hardware.

A standalone LCD advertising player is used for many different purposes and there is no definitive list. However, below are some of the most common applications: Airports, Cafe & Coffee shops, Cinemas, Clubs, Pubs&Casinos, Conference Centre, Education, Exhibition &Trade shows, Government, Hotels, Retail stores, Restaurants & Fast food.

For the moment, Our LCD advertising players range includes 7″/10.1″/15.6″/18.5”/21.5″/23.6″/27″32″/43″/49″/55″/65″/ 70″/75″/82″/85″/86″/98″.

Support 1080P HD Video, JPEG Picture and Music;
1.Support SD/USB readable;
2. Support 5 groups Timer on/off function every day;
3. Support playlist function, auto play the specified file at the specific time;
4. Support USB Auto copy function;
5.Support Scrolling text;
6. Landscape and Portrait display mode options.

1.Motion sensor function;
2.Touch screen function;
3.High brightness functions;
4. Scanner functions.

You can upgrade contents of the memory card (or built-in memory) by simply inserting an USB flash drive loaded with new content,no need to take out the memory card of the player. Player will automatically start playing after upgrade.

It has two options for Motion sensor function,
1.Power on/off.The advertising player will start playing after the IR body sensor detects an approaching viewer. It will go into standby mode once the moving object leaves;

2.Sound on/off.The advertising player will keep playing Video all the time but without sound, the sound of player will be activated when the IR body sensor detects an approaching viewer.
Motion Sensor functions could save power,also get more attention from customers.In the store the employees can be annoyed by the sound used by digital signage systems, using Motion Sensor controlled sound solves this problem.

If we are not online,please check the contact information below, Email, call or Skype, we will reply you as soon as possible.

Yes. After we receive video from you, our engineering will test the file and upload them to SD cards. Then we take aging test for player together with these video, then you can simply plug and play after you receive the players.

Yes, it has timer on/off functions, you could setup the tum on/off 5 groups every day, such as 8:00-9:00; 10:00-12:00; 1:00-2:00 ……. You also could play the specified files at the specified time.

Yes! We offer a wide array of customization for all our products, far too much to detail on our website. If you don’t see exactly what you want, call and talk to one of our sales engineers. We are happy to help with any request and can usually provide exactly what you are looking for.

Consider your customer first. Do they often have questions about your company, product or service? Are they as informed as they could be to make educated purchasing decisions? Can you or your employees deliver a consistent strategic message to every one of them? Digital signage in your company can help to deliver consistent strategic messages to your audience to empower or influence their actions.

Yes, DDW Android digital signage has network function with LAN/WIFI/3G/4G,you just insert 3G/4G SIM card into the slot,then could use 3G/4G network to control the display Remotely.

Yes, You could use our CMS software on one PC to control many digital signage in different places with the same content or different contents.

DDW use external quality /safety CE, FCC, UL, ROSH approved power adaptor for 10-24 inch advertising player before delivery. For 27 inch or larger screen size, there are built-in power board, and use power from AC directly.

All DDW product undertake at least 48 hours aging test (including power adaptor and memory card) , then start 100% inspection, and last OQC inspection before shipment.

If we are not online, please check the contact information below, Email, call or Skype, we will reply you as soon as possible.

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