Application and purchase of engineering signal equipment for LCD splicing large screen system
Switching, conversion, transmission and other signal equipment are very important links in the overall large screen display system engineering.
When choosing equipment, carefully select the equipment to avoid wrong judgment and affect the work efficiency. Here are some experiences of the staff working in the front line of the project for your reference.
The application of signal equipment in liquid crystal splicing large screen system engineering and the selection of signal equipment such as switching, conversion and transmission are very important links in the whole liquid crystal splicing large screen display system engineering.
When choosing equipment, carefully select the equipment to avoid wrong judgment and affect the work efficiency. Here are the experiences of some engineers working in the front line of the project in Shenzhen Nino Technology Co. , Ltd, for customer reference, to help customers.
LCD splicing large screen system engineering signal equipment purchase points: 1, to avoid static electricity may damage the equipment, due to some occasions (Most)
The ground is a chemical fiber carpet, and our clothing basically contains chemical fibers, so static electricity is always with us. Static electricity is very dangerous for electronic equipment.
Of course, some devices can take protective measures at the input, but for RGB (Input and output)
The equipment is not allowed, because the signal will reduce the bandwidth through the protective device, so there is generally no protective measure.
This requires that it is best not to be charged when plugging and unplugging the signal connector. To turn off the power at the same time (Input and output devices)Connect again.
2. It is best to choose high-quality connectors. At present, the electronic components market is mixed with good and evil people, especially on connectors.
As a large-screen display system, there is no problem in the connector link. Cheap parts may not show problems at that time. However, oxidation and poor contact will occur as time and climate change, this affects the display effect.
In addition, there are impedance matching problems, which need to be matched strictly according to the input/output impedance in the user manual.
3. It is best to use high-quality video transmission cables, including analog and digital signal transmission cables.
When the transmission signal is computer video and the transmission distance is more than 3 meters, 75 ohm RGBHV coaxial cable should be selected.
The difference between cables is very large. The impedance of high-quality cables is accurate. There should be a good shielding layer and the transmission characteristics meet the requirements.
For example, under higher bandwidth, relatively low attenuation characteristics should be ensured.
In this way, under the condition of long distance, the clarity of the image can be ensured.
The central conductor of the transmission cable is preferably 'tinned copper wire'. At present, the core wire of most cables on the market is not tinned copper wire but bare copper wire, which is easy to cause corrosion, however, long-term corrosion will cause poor contact and virtual connection.
However, the cable of tinned copper wire will not be rusted, and the connection between the joint and tinned copper wire should be crimped with special crimping pliers, which can ensure that no rusting will occur and ensure that the display signal is stable and clear for a long time.
Buying commercial LCD products such as LCD splicing screens, Nino technology reminds you to choose accessories (Signal equipment, other external equipment)
When you choose carefully, you should not only choose good quality, durable, but also choose the right one. It is generally recommended that customers recommend the appropriate LCD splicing accessories in the LCD splicing manufacturers, in order to avoid the difficulty of later use and after-sales maintenance, it will bring you inconvenience.