State Machine State/Activity Model
| States | calculated | Sent | --Not Named-- |
| --Not Named-- |
| Activities | Preset to new target | Receive command | Forward command to trk subsystem |
| Preset probe | Process Preset sequence | Wait for reply | Preset trk |
| Preset ag | Send Reply |
| Synchronizations | --Not Named-- | --Not Named-- |
| Partitions | User | Prs | Agws |
| probeServer | probetrkServer | Trkws |
| Activity Diagrams |  Guide star preset |