Total board counts for electronics
		  in Level 1 calorimeter trigger crates

							27-June-1997
							Peter Wilson
							TGN-93
								

** J3 backplane:  feed thru, and point to point.
** J3 connectors: 220 pin 2mm Hard Metric (with guide pin)



(1) Crate/J3 backplane counts

	subsystem                       #crates(backplanes)

	L1 calorimeter 			  6
	L1 Decision			  1
	---------------------------------------
	total            		  7



(2) module counts 

	Each crate has:	16 DIRAC cards, 16 L1AUX (DIRAC Transition module)
			 and 2 Cratesum cards

	The L1AUX and J3 backplane will also be used in the L1 Decision crate 
	(4), these are listed here.  

(3) J3 connector counts by board type
		
   name		 prototype 	production 	spare	total-counts 
   ---------------------------------------------------------------------
   DIRAC	   10		    96  	  20	    126  (139)
   L1AUX	   12		   100 		  20        132  (145)
   CRATESUM         4		    12 		   4	     20  ( 24)
				--------------------------------------
					GRAND TOTAL		   308



* Note: "spare" is spare board to be built.  
        Total-counts in () includes additional 10% spare connectors.
 	

* Channel counts on each board
	DIRAC 		12
	L1AUX		12 (13 input, 12 out)
	CRATESUM        N/A

=====================================================================

*** TOTAL ORDER ASSOCIATE WITH J3 WILL BE 

		 14 	J3 BACKPLANES (7 installed, 3 in test stands, 4 spare)
		308	J3 CONNECTORS FOR 9U BOARD and TRANSITION MODULE
		

Other counts:    163  front panels (standard)
		 145  plastic front panels (for transition modules), UofC will
				design these.	
		 326  J1/J2 connectors for 9U board
		 308  J0 connectors for 9U board and transition modules
		 145  J2 shell only connectors for transition module