XTreme 2 EFIS and EMS with RDAC VD
The new XTreme 2 EFIS and EMS (XTremes shipped from approx October 2014) no longer have the 'RDAC' optical signal wire, as they are designed for use with the RDACXF via CAN bus. However, those wanting to connect the RDAC VD to the newer XTremes can use an RS-232 port on the XTreme with the attached schematic (note resistor).