12 Installing and Upgrading the CSC-C2FCIT FDDI Card and Appliques
Installation Prerequisites
Calculating the Chassis Power Budget
In an AGS+ chassis shipped on or after October 1, 1991, the total power drawn by all installed cards
must not exceed 300 watts (W) per chassis. In chassis shipped before this date, the total power
cannot exceed 260W. (The earlier chassis contained a 5-amp [A] circuit breaker, rather than the 7.5A
circuit used in the later chassis configuration.) Table 3 lists the power requirements for each card
available for the AGS+.
Table 3
Interface Card Power Requirements
Before installing new cards, check the power requirements of the existing system and the new
card(s) to avoid exceeding the power budget. Calculate the power requirements of an existing
system by adding the values for each card in the chassis; the sum is the power requirement.
Determine the available power budget, subtract that sum from 300W (260W for chassis shipped
before 10/1/91); the result is the power budget available for new cards.
1. Add 4W for each external Ethernet transceiver.
Card
Power
(Watts)
CSC/3
31
CSC/4
35
CSC-ENVM
10
CSC-MC+
3
CSC-MCI
28
1
CSC-SCI
20
CSC-R16M
34
CSC-1R or CSC-2R
30
CSC-CCTL
29
CSC-CCTL2
34
CSC-(C2)FCI
50
CSC-FCIT
36
CSC-(C2)MEC(2, 4, or 6)
22
1
CSC-(C2)HSCI
48
CSC-C2CTR with 1 applique (2 ports)
30
CSC-C2CTR with 2 appliques (4 ports)
42