Digital Filter

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
• by
• TCLK 75
• shot data
• event

• - Switch activated
• every 1sec
• Switch deac-tivated on abort 47 or 4B
• -Switch reac-tivated after 1st turn acquisition

• 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