2014年5月30日星期五

How to choose the right hdmi cable

HDMI cable are digital transmission lines, similar to a computer's VGA, hdmi to dvi adapter cable, probably no one will care whether they use a VGA cable is luxuries, as long as connected, as long as the image quality depends mainly on the monitor and graphics card, almost nothing to do with the wire . HDMI also be the case, digital transmission itself is a strong anti-interference ability, not because of the quality of the wire, patch panel the signal disturbance. Should pass through the line. But still have a choice HDMI cable needs, especially when you need a long HDMI cable, good quality HDMI cable, apparently able to improve noise immunity. HDMI connection could theoretically allow the distance of more than 20m, if too far away, or because the signal attenuation and interference, making it impossible to properly transmit data.

2014年5月7日星期三

Some faults appear hdmi cable

hdmi cable wire and cable refers to the high-temperature combustion flame can keep running for some time, namely, to maintain the integrity of the circuit, this type of cable has the ability to supply a certain time in the flame.
High temperature wire and cable in the event of a fire can continue to work (current and signal transmission), which itself is not retardant assessment of whether or not the column. In the event of a fire retardant cable suspended work quickly, its function is not affected and can be self-extinguishing flame. Fireproof hdmi cable cable 750 ~ 800 ℃ flame burning in maintaining the normal operation of 180 minutes.
Fireproof cable is actually another type  3d hdmi cable of fire-resistant cables. It is based on copper as the conductive core, seamless copper tube for the sheath to inorganic minerals magnesium oxide as the insulating material group from the system.
hdmi cable is due to the overall inorganic material, therefore, the entire fire cable is neither burning nor retardant. And can withstand fire. The test showed that: burning in flames 800 ~ 900 ℃ for 2 hours, normal power cable has been run at 1000 ℃ flame burning 30 minutes remain cat5e patch cable  intact and continue to operate normally. The normal operating temperature of 250 ℃, safe and reliable operation. Troubleshooting high temperature wire and cable
A mobile power cables, removal and modification and joint replacement, must first be grounded without electricity after power outage confirmed before work. 2 Do not touch overhaul armored power cables and power cables to move power cables to prevent the induction of electric shock. After 3 before entering. Maintenance personnel working well before entering the hole, the well should be ruled out foul air. Working in the well should wear a helmet, and power cables located manned wellhead to prevent objects falling into wells wounding. 4 cutting power cable operator, should stand insulated stage, wearing insulated gloves down, and its cutting tool should be grounded. 5. Ago for  hdmi to dvi cable repairs of power cables, power cables should be allowed to discharge grounding conductor. Can hit the ground when 0.5m deep hardcore in the workplace as a ground rod. 6 When digging power cable, power cable protection when dug uttermost, laying a personal monitoring guidance, in order to continue the excavation. Electrical dug 7 cable connector, as required under floating, suspended protection should be added. 8 The underwater power cable brought on board when the boat should remain stable and should be equipped with lifebuoys.

2014年5月5日星期一

WISDOM mini hdmi cable introduces some basic

Meanwhile, the benefits of wire and cable manufacturing companies are also the selection of materials, processing and production management can save materials science are closely related.
Therefore, in the design of the wire and cable product must be carried out simultaneously with the selection of materials, in general, the choice of several materials, through the process and the performance of screening tests OK.
Cable products and materials used in their use of  cat5e keystone jack the site features, mini hdmi cable can be divided into conductive materials, insulation materials, filling materials, shielding materials, sheath materials. However, some of the material is common to several structural member. Particularly thermoplastic materials, such as polyvinyl chloride, polyethylene, etc. so long as the changed part of the formulation ingredients can be used in the insulation or jacket.
Categories of cable products used in the manufacture of the material involved is very wide variety specification (grade) is particularly high.
The main components of the basic essential  RJ45 PCB jack products for current or electromagnetic transmission function information: Name and wood product structure (1) wire. Main material: conductive core wire is short, with copper, aluminum, copper-clad steel, copper clad aluminum excellent conductive properties and other nonferrous metals made in optical fiber as conductor.
Bare copper wire, tinned wire; single branch, stranding; After tinned wire.
(2) an insulating layer: mini hdmi cable is wrapped around the wire plays a role in peripheral electrical insulation components. That  hdmi wall plate is able to ensure that the transmission of electric current or electromagnetic waves, light waves travel along the wire and not only the flow of outside, with the potential of the conductor (ie, the formation of the potential difference between the surrounding objects, namely voltage) can be isolated, which is necessary to ensure the normal transmission wires function, but also to ensure that external objects and personal safety. Conductor and the insulation layer is composed of two basic components of cable products (except bare wires class) must have.