User Manual

28 Part 004071A revision 00b August 6, 2003
Amosphere NPM Installation Procedures (MMDS)
Altitude
Certain components in the NPM basestation are sensitive to altitude. Table 2.6
shows the altitude requirements for the basestation.
Airflow
Each NPM basestation rack requires 0.6 m (2 feet) of open space in front of and
behind it to allow suitable airflow for cooling. Each cooling fan draws
approximately 600 cubic feet per minute (CFM) of air.
Heat Output
Table 2.7 shows the amount of heat produced by the NPM basestation.
Shock and Vibration
The NPM basestation uses network equipment-building system (NEBS2000)
racks designed for use in level 4 seismic zones.
Operational State Altitude Requirement
Operating –60 m to +1800 m (–197 feet to +5904 feet)
Table 2.6 Altitude Requirements
Configuration Heat Output (W) Heat Output (BTU/hour)
6 sectors 6795 23 201
3 sectors 3725 12 719
1 sectors 1680 5 736
Table 2.7 Heat Output
installation.book Page 28 Wednesday, August 6, 2003 6:06 PM