Mounting - Comtech EF Data CRS-280L Installation And Operation Manual

2.2

Mounting

Under no circumstance should the highest internal rack temperature be
allowed to exceed 50°C (122°F)..
The CRS-280/280L 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.
The CRS-280 replaces the CRS-282 (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 70/140 MHz applications.
The CRS-280L replaces the CRS-282 (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-280/280L:
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-280/280L 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.
Installation
CRS-280/280L IF Switch for 1:N Redundancy
2–2
Revision -
MN-CRS-280/280L