MultiCam Boards Documentation > GRABLINK series Documentation > GRABLINK Base Handbook > I/O Ports Electrical Specifications > High-Speed Differential Inputs

High-Speed Differential Inputs

Characteristics

High-speed differential inputs (simplified schematic)

The high-speed differential input ports have the following characteristics:

The state of the port is reported through the InputState MultiCam parameter.

Compatible Drivers

The following drivers are compatible with the high-speed differential input ports:

Electrical Circuits Examples

The following figure shows the recommended wiring diagram for a system device using RS-422 differential drivers. Applicable for fast system devices such as motion encoders operating at frequencies up to 5 MHz

The following figure shows the recommended wiring diagram for a system device using two complementary CMOS or TTL drivers. Applicable for fast system devices such as motion encoders operating at frequencies up to 5 MHz

Note. For correct operation of the above two circuits, it is mandatory to satisfy the common-mode voltage requirements of the receiver. Practically, this requirement can be achieved by the addition of one "Signal Ground" wire between each system device and the board.