Comtech EF Data CRS-280L - Manual (Page 30)

CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1
Installation MN/CRS280L.IOM
2–2
2.2 Mounting
The CRS-280L replaces the CRS-280 (used with the Comtech EF Data’s CRS-300 1:10
Redundancy Switch, CRS-500 M:N Redundancy System, or CEFD legacy product CRS-400) and
IFU (CEFD legacy product SMS-7000) for L-Band applications.
The CRS-280L is constructed as a 4RU-high, rack-mounting chassis. Rack handles at the front of
the unit facilitate removal from and placement into a rack. It is compatible with mounting at the
top, back, or front of the rack (refer to the associated controller documentation for additional
details).
To install the CRS-280L: Mount the switch with user-furnished hardware, using the unit’s front
panel mounting holes only. Since the switch itself is relatively passive, no additional clearance is
needed between it and the nearest Modem.
Typically, the CRS-280L is mounted in a rack along with the modems with which it operates;
therefore, it is important to ensure that there is adequate clearance for ventilation, particularly at
the sides. In rack systems where there is high heat dissipation, forced air cooling must be
provided by top or bottom mounted fans or blowers.
CAUTION
Under no circumstance should the highest internal rack temperature be allowed
to exceed 50°C (122°F).
IMPORTANT
The CRS-280L
CANNOT
have rack slides mounted to the side of the chassis.
Comtech EF Data recommends that an alternate method of support, such as rack
shelves, is employed within the rack if front-mounting the unit is not feasible. If there is
any doubt, please consult the Comtech EF Data Customer Support department.
Typical installation and configuration examples are provided on the pages that follow: Figure 2-1
shows the CRS-280L as used with the CRS-300 1:10 Redundancy Switch and CRS-350 ESC
Switch, while Figure 2-2 shows the CRS-280L as used with the CRS-350 and the CRS-500 M:N
Redundancy System. For further details on the CRS-280L’s tandem use with other Comtech EF
Data switching products and systems, refer to those products’ respective installation and
operation manuals.