LED Display Connection Problem of LINSN Control System

At present, most full color video LED displays from China use LINSN synchronous control system. When the customers do the setting “display connection” in the software LEDStudio, they find a problem, that is the cabinets of the display can not be connected into one whole display and the display shows as several separate screens.
When we do the after-sale service for the customers, we have this problem several times. Now I would like to share one case to show how to solve the problem.
One customer from Florida USA purchased a P20mm 2R1G1B virtual pixel LED display with resolution 160×96dots from us in September 2009. The customer did the setting of the display in their workshop before installation. He did the “Display connection” as the below picture shows.

We checked his operation through remote control software SHOWMYPC and found that his operation was correct. However, there was no change on the whole display after he clicked “Send to receiver” and “Save to receiver”. The display did not show a whole image. The customer sent us some pictures to show the problem.

We can see that there were four separate parts, because the four cabinets had not been connected into a whole display. But the operation in the software was correct. Then what was the problem?
The display can show the SCREEN 1 background. This meant that the setting of the graphic card driver and the connection of the serial port cable and DVI cable were proper. The operation of the software was also correct. But there was no change after the “display connection”. The problem should be that attribute setting can not be sent to the receivers. We asked the customer to check which RJ45 output port of the sending card he linked with the first receiver. And he told us that he used the port near the DVI port. That was the problem. There are two RJ45 output ports in the LINSN sending card. The one near the indicating lights is the only port for attribute setting. The other one is the backup port for displaying contents. Please have a look at the following picture to see the correct connection.

The customer changed the output port and the problem was solved immediately. He was very excited and sent us some pictures to show the nice performance of the P20mm LED display.

Above all, to solve the problem of display connection of LINSN control system, one important step is to make sure that you have used the RJ45 output port beside the indicating lights.

Created By Sales engineer Andy Huang E-mail: andy@chipshow.com

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