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What are the factors that affect the quality of HD line produced by HD line manufacturers?
Release time：
2021-09-23 16:11
What are the factors that affect the quality of HD line produced by HD line manufacturers?
1. Conductor: Most wires are made of copper, which has good conductivity, so the conductivity can reach 100%. HDMI cable also uses copper wire, but because of the cost, the high-end core uses silver plated or copper wire. There is usually tinned copper wire.
2. Shielding: using production equipment to weave electroplating wire, the shielding efficiency of high-grade wire is up to 95%, while that of ordinary wire is only about 80%.
3. Knot: HDMI cable attaches great importance to knot technology, mainly to prevent interference. There are special processes, such as stranding, total stranding, wing aluminum foil, etc.
4. Insulation: including the insulation of copper wire and the external insulation of wire. FO-PE is generally used as insulating material of iron wall wire. Special foaming process shall also be adopted. PVC material is used externally.
5. Magnetic ring: Some HDMI cables may have magnetic rings, but this is not necessary, nor is it the standard to judge whether HDMI is good or bad. Magnetic ring can reduce interference to a certain extent, but if HDMI works well enough, there is no need to borrow this kind of thing. Only products with uncertain quality sometimes use this shield.
6. HD line manufacturer-connector: A lot of efforts have also been made in the connector part. First, gold-plated head treatment. Many HDMI lines are gold-plated, which can effectively prevent rust and corrosion, and has anti-skid and wear resistance.
Place half a needle on the 19 # pin of the HD line (HDMI line) produced by the HD line manufacturer. When the HDMI line is unplugged, the HOT PLUG pin is disconnected first, and then notify the input and output equipment when the HDMI line circuit is detected to be disconnected.
As a matter of fact, the port of the HD line (HDMI line) produced by the HD line manufacturer is often burnt during hot plugging, that is, it is damaged by static electricity. The HD line (HDMI line) is a very fast digital signal. Because of the need for high speed, the anti-static circuit used in the design of the receiving chip can generally only withstand 5-8KV static voltage, but this is real life, but some machines do not use ESD protection circuit in order to save costs, and can burn the chip when inserting the static HDMI line. The same is true for HDMI wire test friends, because NA and TDR also have anti-static requirements.
Another reason is related to the power grid: our power socket has two pins and no grounding wire. Generally, when installing LCD TV and projector, users do not install a separate grounding wire. This makes it easier to form static electricity.
Therefore, when hot-swapping the HDMI cable, burning the port or device with hot-swapping on the network is both of these reasons. Therefore, general manufacturers do not recommend the use of hot-swappable HDMI cable.
High-definition cable manufacturers in the market support hot-swappable high-definition cable (HDMI cable), which is the ESD HDMI cable launched by Jingrui Electronics.
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