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Board "68AMP_9Lemo"

As allready discribed in Signal flow Messfenster there can be choosen one (up to all) of ten PFI-Lines as target for the incoming Messfenster. this is down at jumper J10-J18 (PFI9 not used):

Curcuits

68amp-9lemo.pdf

In principle there exist four different grounds at the boards that can be tied together via jumbers as required:

Therefore there is although a forced connection of GND with protective earth about the chassis. AIGND (J20) and DGND (J21) can be individually pulled to protective earth via jumpers. That is done by default. This way all four grounds are feed together on this board: