A variety of options are available for the 619, including dual cross hairs, s-video, solid or dashed lines, two lines displayed horizontally, or two lines displayed vertically.
Units featuring loop-through input with two input connectors allow connection of both a video source and a destination to the input. For instance, a camera can be connected to one of the Model 619's input connectors and a monitor to the other. In this way, the video image can be observed directly as it comes from the camera (without cross lines or cross hair) via the loop-through input, while the image with the cross lines or cross hair is present at the Model 619's output.