Updated:  April 25, 2005
Trigger List of Acronyms (TLA :-)
=================================

 TRG  = Trigger

 L1T   = Level 1 trigger (DCT+EMT+GLT+misc)
 L3T   = Level 3 trigger (L3M+L3S+L3D+L3E+other+misc)

 DCT  = Drift Chamber Trigger  (TSF+BLT+PTD+misc)
 DCZ  = Upgraded Drift Chamber Trigger with Z tracking (TSF+BLT+ZPD+misc)
 EMT  = EM Calorimeter Trigger (TPB+misc)
 GLT  = Global Level 1 Trigger (GLT+misc); also 9U Euroboard with GLT algs.
 IFT  = IFR Trigger (IFT+misc)

 ONT  = Trigger Online software
 OFT  = Trigger Offline software

 TSF  = Track Segment Finder (part of DCT), also 9U Euroboard with TSF algs.
 TSFi = TSF Interface board (6U) 
 TSFM = TSF Module (TSF+TSFI)
 BLT  = Binary Link Tracker (part of DCT), also 9U Euroboard with BLT algs.
 BLTi = BLT Interface board (6U)
 BLTM = BLT Module (BLT+BLTI)
 PTD  = PT Discriminator (part of DCT), also 9U Euroboard with PTD algs.
 PTDi = PTD Interface board (6U)
 PTDM = PTD Module (PTD+PTDI)
 ZPD  = Z-Pt-Discriminator Board (part of DCZ upgrade) 
 ZPDi = ZPD Interface Board 
 PDB  = Prototocol Distribution Board (from DIRC system, used in DCT and GLT)
 DCC  = DIRC Crate Controller (used in DCT and GLT)

 TPB  = Trigger Processor Board (part of EMT)
 TCB  = Trigger Carrier Board (part of EMT)
 TRB  = Transition Board (part of EMT TCB)
 EMB  = EM Calorimeter Monitoring Board (part of EMT TCB)

 IFS  = IFT Sync Interface Board (part of IFT)

 GLTM = The GLobal Trigger Module 
 GLTi = GLobal Trigger Interface board (6U) 
 
 L1D  = Level 1 DCT (used in software)
 L1E  = Level 1 EMT (used in software)
 L1F  = Level 1 FCT (used in software)
 L1G  = Level 1 GLT (used in software)
 L1X  = Level 1 eXamples (used in software)

 L3M  = Level 3 Master steering framework
 L3S  = Level 3 SVT algorithms
 L3D  = Level 3 DCH algorithms
 L3E  = Level 3 EMC algorithms


Related abbreviations
---------------------

 ROM  = Readout Module
 TPC  = Triggered Personality Card (used in all ROMs but the EMC ROM)
 UPC  = Untriggered Personality Card (in EMC ROM; makes Trigger data for TPB)
 TIOM = Trigger I/O Module (makes Trigger data for TSF)
 FCT  = Fast Control and Timing system (used in non-clock software)
 FCTS = FCT System (used in hardware)
 FCS  = Fast Control System (used only for clocks in the software)