The GSI data acquisition system MBS (Multi Branch System) has become, since
its introduction in 1994, the standard system at GSI (37 local and 9 porta
ble systems). It is also used at numerous outside laboratories (29 systems)
. Compared to phase I of the system [1], the current version MBS 3.0 offers
four new major enhancements:
1. Support of event builder hierarchies.
2. Support of message oriented busses and networks.
3. Multiple parallel event builders.
4. A multi-threaded graphical user interface(Java).
The software supports various hardware setups and topologies.