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ASYNC MP LINE DRIVER CARD
4. Installation
This section describes the functions of the Rack Chassis (part number RM216),
tells how to install front and rear cards into the chassis, and provides diagrams for
wiring the interface connections correctly.
4.1 The Rack Chassis
The Rack Chassis (shown in
Figure 4-1
) has sixteen short-range modem card slots,
plus its own power supply. Measuring only 3.5" (8.9 cm) high, each Async MP Line
Driver Card is designed to occupy only 2U in the 19" Rack Chassis. Sturdy front
handles allow the Chassis to be extracted and transported conveniently.
Figure 4-1. Rack Chassis with Power Supply.
T
HE
R
ACK
P
OWER
S
UPPLY
The power supply included in the Rack Chassis uses the same mid-plane
architecture as the modem cards. The front card of the power supply slides in
from the front, and the rear card slides in from the rear. They plug into one
another in the middle of the rack. The front card is then secured by thumb screws
and the rear card by conventional metal screws.
Switching the Power Supply On and Off
The power supply on/off switch is located on the front panel. When plugged in
and switched on, a red front panel LED will glow. Since the Rack Chassis is a “hot-
swappable” rack, you don’t need to install any cards before switching on the power
supply. You may switch the power supply off at any time without harming the
installed cards.
