Cisco CSC-C2MEC, Manual

Page: 14 / 32

14 Installing the CSC-MEC and CSC-C2MEC Multiport Ethernet Controller Cards
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).
Table 7 Power Requirements for Individual Components
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).
One CSC-ENVM card 1 x 10 = 10
One CSC/4 processor card 1 x 35 = 35
One CSC-CCTL2 card 1 x 29 = 29
One CSC-FCI card 1 x 50 = 50
One CSC-MCI 2E card 2 x 28 = 28
14 Ethernet transceivers 14 x 4 = 56 (12 additional for the new MEC cards)
Power requirement of present system 208
Available power budget 300 – 208 = 98
Add two CSC-MEC cards 2 x 22 = 44
New cards within power budget 44 < 98 (New CSC-MEC cards can be installed.)
Card/Applique Assemblies Power Requirement (in Watts)
CSC/4 35
CSC/3 31
CSC-ENVM 10
CSC-MC+ 3
CSC-MCI
1
28
CSC-SCI 20
CSC-R16M 34
CSC-1R and -2R 30
CSC-CCTL2 34
CSC-C2FCIT with applique 36
CSC-CSFCI with applique 50
CSC-C2MECx
2
22
CSC-CSHSCI 48
CSC-C2CTR-2 with applique 30
CSC-C2CTR-4 with appliques 42
CSC-CCTL 29
CSC-FCI with applique 50
CSC-MECx
2
22
CSC-HSCI with applique 48