First Of All What is LED ?
LED stands for Light Emitting Diode is a semiconductor light source and LED also a chemical compound that gives off light when an electrical current passes through it.
Some Common points of LED Are :
- Standard Definition
- High Definition
- Viewing angle
Details on these points are : What is Pixel :
A pixel is a point of light on an LED sign. An LED sign is made up of an array of pixels (or points of light appearing as dots). A pixel can be as small as one LED or it make contain a cluster of LEDs (2, 3, 4, 6, etc.) that make up one pixel. The closer the pixels are together the higher the resolution of the image
Standard Definition :
Displays offer 1.375″ on-center spacing between each pixel producing a brighter image and larger text size that can be seen from long distances. If you will primarily run text and basic animations on your display, we recommend standard definition.
High Definition :
Displays offer .7″ on-center spacing between each pixel producing a crisp clean resolution. It also provides more text options for message size. If you will run text, video and detailed animations on your display, we recommend high definition.
Viewing angle :
Is extremely important. You have probably noticed LED signs on the highway that you can read from a distance, but as you get closer to the sign, the message disappears. AD Systems offers a 140 degree viewing cone which allows the LED to be read from the side as well as from the front. Viewing angle directly effects how long your audience can read your messages.
Content Source : http://www.adsystemsled.com/education-2 Some Points remembers chhosing the right electronic display ?
How often have driven past an electronic display and can barely read the message? Electronic signs have numerous benefits over conventional signs but purchasing a display that does not meet your needs is money wasted. This section will give you the basic concepts in selecting the right electronic display.
- VIEWING DISTANCE AND TIME
- TEXT OR GRAPHICS
- MESSAGE CONTENT
- PHYSICAL SIZE OF LED DISPLAY
- OTHER FACTORS TO CONSIDER
Details On these points : VIEWING DISTANCE AND TIME :
The first step is to choose the viewing distance from where you want the majority of your audience to read your message. As a general rule of thumb, 1” character height is viewable from 50’ away. For example, a person standing 400’ away from an electronic sign can recognize an 8” or larger character on the display. In addition, the traffic pattern in front of the electronic sign needs to be taken into consideration. A driver in a 45 mph speed zone will have less time to read a message than a driver in a 35 mph zone.
On average, the typical audience will need at least 3-4 seconds to read 6-8 groupings (frames) of text/graphics. For example, the phrase “VOLUNTEERS NEEDED. CALL 555-1212” would constitute four frames of text. Understanding viewing distance and time will help you determine the correct size of your electronic display. For more information on viewing distance and time, please refer to the following link on viewing distance and time for LED signs.
TEXT OR GRAPHICS :
Certain applications do not need to display graphics such as financial information, community announcements, upcoming events, etc. To display graphics, you need to consider an LED display that has at least 16 pixels in height. We recommend a minimum of 32 pixels in height to display detailed graphics.
MESSAGE CONTENT :
The next thing you should consider is how much content you want to display on your LED display at once. LED signs give you the flexibility of displaying multiple messages by cycling through the messages at a delayed interval. Therefore, think about how many lines of text and number of characters per line you want to display. Usually it is a good idea to have at least two lines of text and twelve characters per line.
PHYSICAL SIZE OF LED DISPLAY :
Most manufacturers of LED signs carry standard models that are of a certain physical size. You can check our standard models by going to the menu above and selecting Outdoor LED Display. Unlike other companies, AD SYSTEMS is a full service company that can also manufacture custom size LED displays to suit your individual needs.
OTHER FACTORS TO CONSIDER :
There are other factors that you may need to take into consideration. Please feel free to contact us and we will be glad to explain it to you.
- Software – Functionality and ease of use
- Communication methods
- Installation methods
- Zoning and sign ordinance restrictions
- Financing options