RDO commands:

The following hex trigger words are defined for the readout boards in Trigger/Clock Distribution Tree, (Req. Doc., V1.2, February 29, 1996), by V. Lindenstruth et al.:

• 0: No trigger; following trigger token is 0
• 1: Clear; clears redundancy counters
• 2: Master reset; general reset of whole FEE logic
• 3: Reserved
• 4: Trigger 0; physics readout (normal trigger)
• 5: Reserved; executed as Trigger 0
• 6: Reserved; executed as Trigger 0
• 7: Executed as Trigger 0, but copy event also to local buffer
• 8: Charge-injection pulser
• 9: Laser trigger
• A: Ground-plane pulser
• B: Buffered readout; reproduce event stored by Trigger 3
• C: Config; housekeeping or geometry event
• D: Abort; abort and clear active event
• E: L1 accept; Level 1 accepted the event identified by token
• F: L2 accept; Level 2 accepted the event identified by token

References:

• Front End Electronics for the STAR TPC by S. R. Klein et al. (SN0239).

• The STAR TPC FEE HDLC Link by P. Barale et al. (SN0241).

• Trigger/Clock Distribution Tree, (Req. Doc., V1.2, February 29, 1996), by V. Lindenstruth et al.

• Front-End Electronics -> DAQ Fiber Interface, (Req. Doc., V1.2, April 10, 1996), by V. Lindenstruth et al.