Grasp the common coaxial mini hdmi cable, cable types and characteristics

1 Consider transmission attenuation : the case where a high floor, and distant from the monitoring center should carefully consider the transmission attenuation problem. When selecting cables, we all know  WISDOM cat6 keystone jack better than Thick thin cable , but should also be aware SYWV physical foaming cable SYV than solid cable , high- series cable is superior to low- programmed cable , copper cable is superior to " Copper Clad " cable, copper is better than aluminum-magnesium alloy netting netting . -
. 2 mini hdmi cable high frequency attenuation concern : the low-frequency component of the brightness / contrast attenuation easy to find and solve the most important cable transmission characteristics that the higher the frequency the greater the attenuation , high frequency attenuation mainly affect the clarity and resolution, paying particular attention to summary of the observation method of image quality . Cable characteristics and laws in this regard are : Thick better than thin cable , foam is better WISDOM barrier terminal block  than solid , but the same type of "high- and low- compiled code , like high frequency attenuation .
3 Consider mini hdmi cable life: the flexible cable is better than regular cable , thin cable is better than thick cable ; still one of the most easily overlooked problem : Cable adhesion between the layers , that is, when the cable between the layers lengthwise force in the opposite direction , relative sliding occurs whether the high-level elevator cable length up to 100 m perpendicular to the wiring , the cable outer sheath is fixed to the trailing cable , which is a "soft fixed," allowed cable deformation constant ( destroy coaxial ) , so that , in the reciprocating movement of the elevator within WISDOM fiber optic cable  the cable layer , under gravity , will gradually " dip" , and slowly pulled off or wire braid , the performance of the signal gradually weakened, increasing interference ; there is no such standard cable technology , a simple way to check is to take a meter cable , peel the layers at one end , one hand holding the ends of the cables , another person with pliers to pull the inner cable : in order to pull wire, insulating layer , woven mesh , the size of adhesion experience to make a reasonable estimate , poor adhesion , easy sliding try not to choose. The performance of many of the cable is not good , should be carefully chosen .