39
SHM-768K
The RM110A rack serves a number of different modems. To choose the
appropriate power supply option, a summation of all the card power
consumptions must be made (Table 6-1).
Table 6-1. Power Consumption per Card.
Card Name
Power
Required
Consumption
P.S. Option
Per Unit
ME280C-530
9 VA
(100 VA—10 Cards)
(200 VA—14 Cards)
ME280C-35
7 VA
(100 VA-14 Cards)
6.6.2 T
WO
-T
RANSFORMER
O
PTION
This option provides dual, redundant 100 VA transformers in a single power-
supply module. The PS-1/PS-2 switch selects the power-line transformer to be
used. In the event of a failure of one transformer, it is possible to switch over
to the second transformer. The LEDs indicate which
of the two transformers is being used (Figure 6-2).
