Cáp chuyển đổi đồng trục siêu mỏng Drone 4K HDMI cho bộ ổn định máy phát video UAV Gimbal
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Giới thiệu
An ultra-thin high-definition HDMI adapter cable designed specifically for drone applications, with a total diameter of less than 2mm, is covered with nano-materials, is highly flexible, easy to route, and does not interfere with the gimbal. The single signal line uses shielded wire imported from Japan to minimize the interference of high-power wireless signals on HDMI signals. The HDMI limit number of all adapter boards is equal to ensure signal integrity and support the conversion between various HDMI interfaces.
Tính năng, đặc điểm
The L-shaped interface, when inserted into the image transmission interface, saves space, prevents detachment, and boasts high reliability.
The L-shaped interface, designed for the GoPro camera, saves space, is highly reliable, and won’t disrupt the gimbal.
Featuring a coaxial shielding design, this single wire boasts excellent anti-interference and transmission performance. It also excels in bending and twisting resistance, making it durable and resilient for repeated use.
More about ultra-tiny coaxial cable
Coaxial cable 4k aerial photography cable HDMI gimbal harness, coaxial cable; FPV dedicated Micro HDMI to HDMI 2160P LVDS cable 2160P 4K high-definition HDMI transmission.
An ultra-fine coaxial cable makes it convenient for brushless gimbals, servo gimbals, SLR handheld gimbals, ground monitoring video devices, vân vân.
Coaxial cable is like UTP and STP twisted pair cables. It has a single-core copper conductor in the center, an insulating layer outside the copper conductor, a conductive metal layer outside the insulating layer, and an outer protective sleeve outside.
The difference between coaxial cables and other cables is that there is only one central conductor. The basic structure of coaxial cable is shown in the figure.
The metal layer can be dense or meshed. The metal layer is used to shield against electromagnetic interference, which can prevent the central conductor from radiating electromagnetic fields outward, and can also prevent external electromagnetic fields from interfering with the signals of the central conductor.
Since the coaxial cable has only one central conductor, it is considered being an unbalanced transmission medium.
Key characteristics of coaxial cable
- Characteristic impedance
- Characteristic impedance has nothing to do with frequency and depends entirely on the inductance and capacitance of the cable, which depends on the conductor material, the medium between the inner and outer conductors, and the diameter of the inner and outer conductors.
- Because of the influence of uneven dimensional accuracy and dielectric material purity in manufacturing, the characteristic impedance of coaxial cables used in cable TV systems is required to be 75Ω, but the characteristic impedance of coaxial cables actually used is usually (75±5)Ồ.
- Vì thế, in order to prevent signal energy reflection and achieve good transmission effect, the terminal load impedance should also be as equal to the characteristic impedance of the cable as possible.
- Shielding characteristics
- Shielding characteristics are an important parameter to measure the anti-interference ability of coaxial cables, and are also an important parameter to measure the leakage prevention of coaxial cables. Poor shielding will affect the quality of the signal.
- Attenuation characteristics
- The attenuation characteristics of coaxial cables are usually expressed by attenuation constants, the number of decibels of signal attenuation per unit length (such as 100m) of cable. The attenuation of signals transmitted in coaxial cables is related to the size, dielectric constant, and operating frequency of the coaxial cables. The attenuation constant is proportional to the square root of the signal’s operating frequency. The higher the frequency, the larger the attenuation constant, and the lower the frequency, the smaller the attenuation constant.
- Service life of the cable
- After a period of use, the material will age, the conductor resistance will increase, the leakage current of the insulating medium will increase, and the attenuation constant will increase. Vì thế, the service life of the general cable is about 7 ĐẾN 20 năm.
- Temperature coefficient
- The temperature coefficient shows the influence of temperature changes on the characteristics of the cable. As the temperature rises, the cable loss increases, and as the temperature decreases, the cable loss decreases.
LVDS lines have very low power consumption while providing high data transmission rates. Ngoài ra, it has many other advantages:
- Power supply voltage compatibility as low as 2V
- Low noise
- High noise suppression capability
- Reliable signal transmission
- Can be integrated into system-level ICs
- The data rate of products using LVDS technology can range from hundreds of 1Mbps to 2Gbps.
- It is current-driven, and a voltage is got by placing a load at the receiving end. When the current flows in the forward direction, the output of the receiving end is 1, và ngược lại.
- Its swing is 250mv-450mv.
- This technology is based on the ANSI/TIA/EIA-644LVDS interface standard.
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