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Installation Prerequisites
Chassis Power Budget
The chassis has a total power budget of 300 watts (W). The total power dissipation of the individual
interface and processor cards (see Table 7) must not exceed 300W. In A-type chassis shipped before
October 1, 1991, the total power cannot exceed 260W (these chassis used a 5A circuit breaker, rather
than the 7.5A breaker used in the current chassis). Following is a sample calculation for adding two
CSC-MEC6 cards (all values in watts).
One CSC-ENVM card
One CSC/4 processor card
One CSC-CCTL2 card
One CSC-FCI card
One CSC-MCI 2E card
14 Ethernet transceivers
Power requirement of present system
Available power budget
Add two CSC-MEC cards
New cards within power budget
Table 7
Card/Applique Assemblies
CSC/4
CSC/3
CSC-ENVM
CSC-MC+
CSC-MCI
CSC-SCI
CSC-R16M
CSC-1R and -2R
CSC-CCTL2
CSC-C2FCIT with applique
CSC-CSFCI with applique
CSC-C2MECx
CSC-CSHSCI
CSC-C2CTR-2 with applique
CSC-C2CTR-4 with appliques
CSC-CCTL
CSC-FCI with applique
CSC-MECx
CSC-HSCI with applique
1. Up to a maximum of 2 transceivers is required.
Each transceiver dissipates 4W (8W total).
2. Up to a maximum of 6 transceivers is required.
Each transceiver dissipates 4W (24W total).
14 Installing the CSC-MEC and CSC-C2MEC Multiport Ethernet Controller Cards
Power Requirements for Individual Components
Power Requirement (in Watts)
35
31
10
3
1
28
20
34
30
34
36
50
2
22
48
30
42
29
50
2
22
48
1 x 10 = 10
1 x 35 = 35
1 x 29 = 29
1 x 50 = 50
2 x 28 = 28
14 x 4 = 56 (12 additional for the new MEC cards)
208
300 – 208 = 98
2 x 22 = 44
44 < 98 (New CSC-MEC cards can be installed.)
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