Reaching Further

摘要

Camera interface standards such as Camera Link, FireWire, USB, and Gigabit Ethernet (GigE) are now commonplace in the machine-vision industry. Despite their successes, the cable lengths offered by Camera Link, FireWire, USB, and GigE standards often limit their use in applications where a camera must be mounted long distances from the host computer. While GigE-based cameras can be used at longer distances, they are also limited in applications where high EMI is present. To overcome these limitations, many companies now offer fiberoptic-based interfaces that allow cameras that use these interfaces to be deployed at long distances without incurring any signal degradation due to EMI.