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Choose the right LED for your project

Every led display application is different, so it is important to choose the right Indoor Led Display. Below is a list of questions that should be asked when considering aled display. These questions are intended to yield answers that will allow the right display to be chosen for each application.

Indoor or outdoor application?
LED displays are specifically designed for indoor or outdoor use. There are two main factors that differentiate an indoor display from an outdoor display. The first is weather durability. Outdoor displays are designed to function properly inextreme weather conditions while indoor displays are not built to the same environmental standards.
The second consideration is display intensity. LEDs used for indoor applications are not bright enough to competewith outdoor
ambient light conditions. Outdoor Indoor Led Displays use LEDs that are designed to be bright enough for outdoor environment.

Where will the Indoor Led Display be mounted in reference to the intended viewing audience?
The exact placement of an Indoor Led Display in reference to the viewing audience is an importantfactor in determining the right product for an application. There are two points to consider when choosing a Indoor Led Display based on where it will be installed. First, the placement of the led display will affect the minimum and Megamun viewing distance. Secondly, the angle at which the Indoor Led Displaycan be effectively viewed must be considered. This is typically referred to as the viewing angle.

Often, different Indoor Led Displays have different viewing angles. It is important to make sure that the intended viewing audience is within the viewing cone of the display.

Who is the intended audience and what are their minimum and Megamum viewing distances?
Different types of audiences require different Indoor Led Display sizes and technologies. First, let's define some possible
audience types: Freeway Traffic (60-75 mph) ? HighwayTraffic (45-60 mph) ? City Traffic (25-45 mph) ? Pedestrian Traffic (on foot)
In order to comprehenda message on an electronic Indoor Led Display, one must have sufficient time toread the message. The concept
of displaying size-appropriate images and text onan electronic display is easy to understand when Megamum and minimum viewing distances and the speed at which the audience is traveling (in a vehicle or onfoot) are considered. Imagine trying to reada message formed with 6 inch letters on a sign while traveling at 70 mph on afreeway. It would be very difficult. In a freeway traffic scenario, one mayonly have a few seconds to read that message. It is ideal to strive to achievea minimum of 12 seconds of readable exposure time for any electronic messagedisplay. The larger the image or character size, the farther away it can beread, which gives the audience additional time read it as they approach thedisplay. A 24-inch character is most appropriate for longer viewing distancesup to 1,200 feet (360m). Consider a trafficapplication in a city. In this case, a much slower traveling audience and amuch shorter Megamum viewing distance would be common. It is important to notonly consider the Megamum viewing distance, but the minimum viewing distance aswell. In

this scenario, the public needs to be able to understand the messagesbeing displayed right up until they are nearly parallel to the sign. For example: If one were to install a display in a city traffic scenario that isonly capable of showing a 24-inch character, the viewing audience would findthis message very difficult to read when close to the display. In thissituation, a display with a 6-inch to 10-inch character would be the bestsolution.
What type of content will be on the display?
Understanding the communication wants and need of the display owner is a very important factor indetermining the right product for
a specific application. Ask questions like:Is color wanted in my messages? Will the display show graphics as well as text? Will the display need to show video images? How many lines of copy will need tobe displayed at one time? What type of messages will be communicated to theintended audience? The answers to questions like these will help lead to theright technology.
Viewing Distance
Viewing distance is one of the most important factors needed to determine the correctsize of most Indoor Led Display.As a general rule: 1 inch of text is viewable up to 50 feet away1 or 25mm of text is viewable up to 15m away.The following
diagram illustrates at what distance and character size that astationary audience will recognize and understand the content of an

electronic sign.

However, if the target audience is moving, then another factor, time, is required. Based on our experience and research, anaverage of at least three to foursecondsis required for a moving audience to adequately recognize andcomprehend six to eight grouping of content on an electronic sign 2. The following chart lists the Megamum time an audience will have to view anIndoor Led Display sign with specific characters size. For example, an audience will have three seconds or less to view Indoor Led Display signs with fourinches of text. If the Indoor Led Display signs have too much content, than thereader will not have sufficient time to comprehend the entire content.
As asummary:
·         2 inch text works well in most foot trafficareas, such as for indoor applications.
·         4 to 6 inch text is ideal for 45mph or undertraffic, such as outdoor church and school applications.
·         8 inch text or larger works is suited for mostoutdoor applications where traffic is 60mph or slower.

1        LEDs emit light allowing the content to bevisible further away than the same content on standard reflective surfaces.
2        Other factors, such as content size, traffic,distractions, weather, lighting conditions, etc. will affect the time
3        The values listed in the chart does not takeinto consideration the minimum required visibility distance (MRVD).
4        The information provided should not be taken asthe definitive source on electronic sign visibility and viewing distance.