Digital Filter Mode Switch

1. Digital Filter Mode Switch All Closed Orbit Mode switches are interrupted by TBT mode. Closed Orbit Mode 1024 pts • - Switch activated • every 2ms • Switch deac-tivated on abort $47 or $4B • -Switch reac-tivated after 1st turn acquisition 1024 pts 128 pts - Switch changed by change in Tevatron state device that listens to $4B and $5C events. • - Switch activated • every 1sec • Switch deac-tivated on abort $47 or $4B • -Switch reac-tivated after 1st turn acquisition • Switch • activated • by • TCLK $75 • shot data • event • Switch • activated • by • user • configur- • able event ($78) Switch activated every 2ms Display Frame Buffer Fast Time Plot Buffer TBT Mode Fast Abort Buffer Profile Frame Buffer Slow Abort Buffer Data at end of FIFO is dicarded Data at end of FIFO is dicarded FIFO full generates error. Pointer reset on TCLK $C2. 8192 pts 128 pts - Switch activated by delayed beam synch clock $7C. Switch remains activated for specified number of turns. 8192 pts • Switch • activated • by • user • configur- • able event - Switch activated by delayed beam synch clock $DA. Switch remains activated for specified number of turns. First Turn Buffer User Data Buffer First Turn Closed Orbit Buffer First Turn Turn by Turn Buffer FIFO full generates error Data at end of FIFO is discarded • Value derived as an average of 64 points after 500th turn of injection captured in turn-by-turn buffer FIFO full generates error

2. Closed Orbit State No Beam State Event $4B Closed Orbit Mode Idle Mode Acquisition Complete Enter Diag App Leave Diag App User Config TCLK Acquisition Complete Enter Diag App Event $4D Leave Diag App TBT Mode Diagnostic Mode First Turn Mode Diagnostic Mode Event $5C