Index of level1 Documents

Level 1 Cable Specification (TGN-94): Specification of the Level 1 Calorimeter cable which is used to transmit trigger tower data from the frontend ADMEM boards to the Level 1 calorimeter trigger. Includes specifcation of electrical characteristics and technique for assembling final cables.

DIRAC Timing (TGN-95): Describes the timing of the DIRAC board at the begining of a run or after a Halt-Recover-Run sequence. Shows timing of input signals from ADMEM, status of trigger pipeline, L1 storage FIFO etc.

DIRAC Interfaces (TGN-96): Describes the connectors, pinouts, protocols, and signal types for connections between the DIRAC board the front end and other trigger components. Interfaces covered are ADMEM to DIRAC (L1AUX), XTRP to DIRAC and DIRAC to DCAS. (Updated 7/3/98)

XTRP Calorimeter Algorithm (TGN-97): Describes the formation of tracking bits in the XTRP for use in the Level 1 calorimeter trigger.

Calorimeter Trigger Error Handling (TGN-98): Describes the hardware and software error handling for the L1 and L2 calorimeter trigger paths. Covers boards from the ADMEM to PreFRED and DCAS to Cluster List.

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