Distribution

Tables 2, 3 and 4 give an overview of the current number of Digital Cards in the CALDAQ-system, as well as their distribution over the different components/subdetectors that are read out by the CALDAQ-system.

Table 2: FCAL Digital Card distribution.

FCAL Digital Cards
Crate	Total	CAL	FPC
1	17	17	-
2	16	16	-
3	16	16	-
4	15	15	-
5	4	-	4
6	16	16	-
7	-	-	-
8	16	16	-
9	16	16	-
10	-	-	-
11	16	16	-
12	-	-	-
13	15	15	-
14	16	16	-
15	16	16	-
16	17	17	-

The Digital Cards in FCAL crates 6, 8, 9 and 11 (with CAL regions around the beampipe) were supposed to be read out in two parts (per crate), the second part being called FCAL 'crates' 5, 7, 10 and 12. In reality this meant two 2TP-modules per 'real' VME-crate. So far this has not been implemented, because of the implementation difficulties of having two readout transputers in one VME-crate, thus as well breaking the (software-)symmetry in the system.

Options:

• implement as initially planned (requires four 2TP-modules), for improved system performance,
• add 4 VME-crates and redistribute Digital Cards (requires four VME-crates and four 2TP-modules), for improved system performance,
• up to 4 extra VME-crates can be added containing hardware for new components/subdetectors, if the readout system requires extensions (BTW: there is room for extensions in the RCAL part as well).

NB: In November 1997 an FCAL crate 5 has been added to the CALDAQ-system, containing Digital Cards of the Forward Plug Calorimeter (FPC).

Table 3: BCAL Digital Card distribution.

BCAL Digital Cards
Crate	Total	CAL	Others
1	16	16	-
2	12	12	-
3	16	16	-
4	12	12	-
5	16	16	-
6	12	12	-
7	16	16	-
8	12	12	-
9	16	16	-
10	12	12	-
11	16	16	-
12	12	12	-
13	16	16	-
14	12	12	-
15	16	16	-
16	12	12	-

Table 4: RCAL Digital Card distribution over components (between brackets the locations in the crate, with crate slots numbered from left to right).

RCAL Digital Cards
Crt	Total	CAL	LED	LAS	SRTD	FNC	PRES	PRT	BPC	BPRES
1	15	15 (1-15)	-	-	-	-	-	-	-	-
2	16	16 (1-16)	-	-	-	-	-	-	-	-
3	14	11 (1-11)	-	-	3 (12-14)	-	-	-	-	-
4	14	11 (1-11)	-	-	3 (12-14)	-	-	-	-	-
5	14	11 (1-11)	-	-	3 (12-14)	-	-	-	-	-
6	14	11 (1-11)	-	-	3 (12-14)	-	-	-	-	-
7	16	16 (1-16)	-	-	-	-	-	-	-	-
8	16	16 (1-16)	-	-	-	-	-	-	-	-
9	8	-	4 (1-4)	1 (5)	-	-	-	-	3 (6-8)	2 (9-10)
102	-	-	-	-	-	-	-	-	-	-
11	14	-	-	-	-	-	14 (1-14)	-	-	-
12	3	-	-	-	-	2 (1-2)	-	1 (3)	-	-
133	0	-	-	-	-	-	-	-	-	-
143	0	-	-	-	-	-	-	-	-	-
153	0	-	-	-	-	-	-	-	-	-
163	0	-	-	-	-	-	-	-	-	-