Pin Layout Front GPIO

 

Extra Voltage IN/GND for Electrically Isolated Circuit

All General Purpose Inputs (GPIs) of the Front GPIO are electrically isolated. The incoming signals are transferred to the frame grabber via optocoupler. This way, the frame grabber is securely protected against high incoming voltages.

However, to operate the internal GPI circuits, you need to connect a voltage source and ground: On pin 10, you apply the voltage (GPI voltage IN) that serves as operating voltage for the internal operational amplifiers. On pin 15, you connect the according ground (GPI GND).

Supply Voltage Required

 

The LightBridge 2 VCL trigger system needs to get supply voltage on the GPI Voltage IN pin (pin 10). If you want to connect devices that have no PWR pin, you need to provide the power supply to the GPI Voltage IN pin (pin 10) from an external source.