Is it possible to filter (hide) the internal events, marked with 'Event xxh', if they have no description. They seem to have no relevant information for me but fill the message display (often long series of 'Event F1'). I tried all filters but I could not remove them.
Do you have a hint?

Thank you, Michael

No, the Message View shows all data as it comes in from the 1480A hardware. Only the main protocol view can be filtered.

The F1 events are special markers that are used to flush data from the 1480A SDRAM when the capture is manually stopped. There is nothing after the F1 markers in the trace.

The following support forum posts explain in more detail:
http://www.internationaltestinstruments.com/boards/t/7/what-does-event-f1-mean-in-the-message-view.aspx
http://www.internationaltestinstruments.com/boards/t/41/what-is-event-.aspx
Also, search the forum posts for "events".