LED displays Technical Index？
(1) Display screen is 1/8scan
The datas transmitted by the single net line introduced from the front controlling card are 768 * 160pixel, 1024 grades gray. The rear full color HUB PANEL at the update rate of 180 Hz each can control 256 * 160pixel, at the update rate of 360 Hz, each can control 128 * 160 pixel. Certain HUB Panels can be conducted cascading . according to requirements.
(2) Display screen is 1/4 scan
When the update rate is 180 Hz, every full color HUB Panel can control 384 * 80 pixel;when update rate is 240 Hz, every panel can control 256 * 80pixel;at the update rate of 480 Hz, each can control 128 * 80pixel. Among HUB Panels can conduct cascading.
HUB PANEL cascading, can be stated as the following: every full color HUB Panel have 2 groups of RJ-45 connecting port, every group has 2 connecting ports, 1 in and 1 out, altogether 4 connecting ports. Usually, only jointing 1 group RJ-45, at this time, the cascading among HUB Panels is series connection. If joint 2 group RJ-45, cascading has two modes (1) 1 in 2 out, HUB Panels can be series connection and parallel connection, when there are many HUB Panels in the system, the mode can ensure the completeness of signal transmission; (2)2 in 2 out, this mode is 2 sets of main controlling system to control 1pc LED display screen, in the front, there are 2 ABSEN 2002 main controlling cards to individually transmit two different sets of data, full color HUB PANEL judge the priority. The corresponding display screen position of the pixel which controlLED by every cascading HUB Panel is decided by the the No. 7 & 8 digits of the numeral dialing tray which be instalLED on the Hub Panel.
How to choose the suitable LED display？
Today is finding wider and wider application field of LED electronic display products, mainly used in banking, securities, transportation (highways, airports, railway stations, subway, etc.), hospitals, sports stadiums, entertainment, advertising and leasing, etc. From the point of use, how to choose the suitable LED display is crucial.
Inward and outward to the dock, station, large market, the elevator traffic guiding panel, better use of monochrome screen, monochrome screen is a font clear, fleet of control, the characteristics of the low price. For the hall area is a big occasion to use P6 double colors display. For display effect is good, can use indoor P6, P7.62, P8, P10LED full-color displays, etc.
For the Banks, show the image of enterprises, shopping malls and other occasions and application aspects, such as advertising requirements display text message, the price is low, can choose the semi outdoor LED display. Effect for clean can use indoor P5, P6, P7.62, P8 full-color LED display, outdoor can choose P10, P12, P16, P20 full color LED display.
For TV radio hall, dance halls, bars, stage entertainment, etc. Can choose to use indoor full-color P5, P6, P7.62, P8, P10LED display, outdoor optional P12, P16, P31.25, P40. If used for background, indoor optional P10.4, P12.5 display screen, outdoor is optional P20, P25, P31.25 display screen, etc.
For a large square, such as plaza, sports park plaza, large outdoor advertising, etc., can choose to use P12 outdoor, P14, P16, P18, P20, P25, P31.25, P40 full-color LED display, etc.
Outdoor LED display for the use of harsh, have higher requirements on quality. So there are many factors to consider, from using angle and prices
Full color is now the mainstream of LED products. Because of its color, brightness is high, the all-weather work has its irreplaceable advantage; Now prices are already popular, consumers can accept everything.
Choose LED display elements: from the point of view using the LED display is the first choice must consider the following elements: display content, brightness, information capacity and viewing distance.
(1) display content
If it is mainly used for display images, video, images, then you should choose full-color LED display;
If it is mainly used to display text, data, tables, and 3 d graphics then should choose single or double color LED display.
(2) the brightness
Install the persons to the user in the outdoor LED display. Installed in the indoor type selection of indoor display normal brightness environment. Installed on the roof, open hall, outdoor canopy or sunshine roof inferior light environment should choose half outdoor LED display.
(3) the information capacity and viewing distance
Select screen must also consider better viewing distance. A closer look, you should choose the LED display with high density; A remote viewing, can choose low density LED display, of course selection screen must also consider the information capacity and better viewing distance. Display shows the information content is unlimited, but appeared on the picture of the content is limited.
Customers when buying LED electronic display screen, must be comprehensive consideration, according to own actual situation to consider. If possible also to manufacturers, so is more clear, when buying LED display on LED performance will also have a better understanding.
LED display common faults and its elimination method？
The whole screen failure
A. the whole screen is not bright (black screen),
1, check whether power supply electricity.
2, test the communication lines connected, do you have any wrong. (synchronous screen)
3, synchronous screen test sending card and receiving cartoon - green with or without blinking.
4, computer monitor whether protection, or screen display area is pure blue or black. (synchronous screen)
B. the whole unit board not bright (black screen)
1, the successive frames horizontal direction not bright, check the abnormal and normal cell plate unit board wiring connections between connected; Or the chip 245 is normal,
2, successive frames and longitudinal direction is not bright, check this column if the power supply is normal.
C. upward unit plate is not bright
1, check the lines and 4953 output pin if there is a pass.
3, check whether the 4953 hot or burned.
If there is a high level 4, 4953.
5, 138 and 4953 feet if there is a general control.
D. unit board is not bright
2, check whether the module corresponding to the up and down through the foot through.
3, 595 if there is a pass to the module output the feet.
E. unit board lack of color
1, 245 r. gutierrez is the data output.
2, check the normal output of 595 feet, and if there is a general abnormal input 595 feet.
Led display maintenance simple and easy process
A control system
1, the whole screen is not bright or squares
Control whether the host open
Communication line is good
Sending card is good
Multimedia card and acquisition card, whether cable connected between the sending card
Receiving card JP1 and JP2 wrong switch position "open the host
Plug the communication line
The sending card inserted
Even a lot of media CARDS and acquisition card, cable between sending card.
Adjust JP1, JP2 switch position
Computer monitor whether protection, are pure blue or black or display shows field. (synchronous screen)
2, each time you start the LED studio tip can't find the control system
COM port to send data card signal gathering line not connected or the computer itself
The COM is bad.
Connect the data line or replace the computer
3, the whole screen picture shaking or double
Check the computer and between the lines of communication
Check the DVI line multimedia CARDS and send CARDS.
Sending card is bad. The communication line inserted or replaced. Reinforce inserted the DVI line again. Replace the sending card