Connectivity issue B650 GE Healthcare #691

I am trying to monitor/extract data from a GE Healthcare B650. I have the required cables that are displayed in your manual and I have the software installed. 

However it recognizes the port en device but then starts to toggle between CON, ON (for 10-12 sec) and then to OFF.  This continues and monitor data is never displayed on the software. 

Any ideas how to fix these problems?