PCB Revision 1207.0 contains the following known bugs: 1. There are 11 ground connections missing due to a failure of the layout system. Workarround: Draw a wire from J1 Pin2 to R36 Pin2 and from C19 Pin1 to CB22 Pin1 This has been normaly done by Phytec E.Schumann Phytec Meßtechnik