What Makes Up a Shielded USB Cable?
There is a lot of confusion over what exactly makes up a shielded usb cable.shielded usb cable Most of the time when people say that a cable is shielded, they are actually referring to a wire that has an outer layer of copper braid or some other metallic structure that helps to prevent electromagnetic interference (EMI). That's because a shield helps to keep unwanted signals from getting into the wire. This is important because EMI can interfere with other devices in close proximity to the cable and cause them to work incorrectly.
The USB 2.0 standards require that all cables used to carry data be shielded in order to protect the sensitive data from damage by EMI exposure. This is a common practice in industrial settings where other equipment generates a lot of EMI and other unwanted disturbances.
When using a shielded cable it is important to make sure that the shield is properly connected on both sides of the cable. This is because if the shield is not connected to ground on both sides of the cable it can cause noise-inducing ground loops which can interfere with signal transfer.
In addition, the shield needs to be properly positioned and configured for the specific application. For instance, if the cable will be subject to repeated flexing it is important to use a cable construction that utilizes a spiraled copper shield rather than a straight foil. This will help to keep the shield from being pulled off by flexing and it also allows for better protection in torsional applications.
Finally, the connectors should be of high quality as well. This is because they can make or break the effectiveness of the shield in a particular application. Make sure that the connectors offer good shielding performance and are rated for the type of cable being used in the application.