Manualshelf

Specifications

ManualsBrandsCisco ManualsComputer equipmentEdge Concentrator MGX 8220
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Common Equipment Description 2-11
Optional Cabinet
The Plenum Exhaust Chamber
The Plenum chamber measures:
• 3.5 inches (2u) high
• 17.45 inches wide
• 22 inches deep
The exhaust plenum chamber is used in installations where the top of the unit must be enclosed. The
plenum chamber is mounted in the rack immediately above the shelf (shelves). The chamber delivers
air from the shelf below and out to the rear of the rack. The plenum chamber is preferred.
Spacer Unit
The spacer unit measures:
• 1.75 inches (1 mounting unit) high
• 17.45 inches wide
• 22 inches deep
If used, the spacer unit is mounted in the rack immediately above the shelf (shelves).
The plenum chamber and spacer units are alternative methods for exhausting the cooling air from
the rack. Either method can be used but not both. The spacer does not support the attachment of a
cable management kit.
Optional Cabinet
A cabinet is available from Cisco which can be used to install the MGX 8220 shelf, the BPX switch,
ESP, and the IGX 8400 series wide-area switch. Systems preconfigured in a cabinet can be ordered
from Cisco.
The cabinet is essentially a 19 inch rack with panels on all sides (including top and bottom) except
the front. The rear panel is a louvered hinged door. The cabinet is equipped with casters, brakes and
leveling bolts. (See Figure 2-10.) The cabinet also includes earthquake safety holes so the cabinet
can be secured to the floor using studs.
The vertical height of the cabinet (including casters) is 80.31inches providing 71.81 inches (41 rack
mounting units) of vertical rack space.
The cabinet is 23 inches wide and 36 inches deep. Since MGX 8220 modules are typically 22 inches
deep, the cabinet provides approximately 12 inches of space behind the mounted MGX 8220
modules for cables and cable management hardware.
NoteModules are installed in the cabinet in the same manner as installed in a 19 inch rack.
Modules are installed by inserting them into the front of the cabinet and attaching them to the internal
racks. All cables are connected through the rear door.