Ovrrbu-bts. Pdf

AirLink 8000
1/30/00
BASE TRANSCEIVER STATION
Release 1.00
2 - 30
1.16.4 Cooling for the Base Transceiver Station
The Base Transceiver Station relies on forced convection air cooling i.e. fans, to exchange internally
heated air with room air. A permanent type (may be cleaned and reused) air filer is provided. The air
handlers are redundant, and are hot swappable. Air temperature monitoring indicate a high temperature
condition due to a dirty air filter or other environmental conditions.
1.16.5 Radio Base Unit Enclosure
The Radio Base Unit is packaged in modular sub-racks, which are mounted in a standard 48.3 cm rack.
The sub-racks are mounted in a 31U open rack with front and back doors and sides.
The RBU sub-rack (shelf) depth is no more than 412.24 mm. This sub-rack depth then allows the unit to
fit into an optional cabinet of depth 450 mm. 
Minimum BTS Configuration is a single non-redundant system with 30 user channels.
Maximum BTS Configuration is dual redundant system with 200 user channels
Worst case current values are based on –40.8 VDC (48V –15% worst case)
Unit
Size
Weight
Dissipated Power
Base Transceiver Station
Input voltage range –40 to 
69 VDC.
48.3 cm x 56.8 cm x 
159.1 cm 31 U (castor/lev-
eling feet included in 
height).
From 158.8 kg to 209.6 
kg, depending on config-
uration.
From 30 to 72 Amps 
1224 to 2938 Watts 
See Note for configura-
tion.
BTS sub-racks
Depth < 41.2 cm 
NA
NA
RBU Antenna (Omni 
2.025 to 2.290 GHZ, type 
N female connector)
3.2 cm dia. x 96.5 cm 
long.
686 gm
NA
RBU Antenna (Omni 2.1 
to 2.3 GHZ, type N female 
connector)
3.2 cm dia. x 92.1 cm 
long.
675 gm
NA
RBU Antenna (Omni 
2.484 to 2.688 GHZ, type 
N female connector)
3.2 cm dia. x 92.1 cm 
long.
652 gm
NA
RBU Antenna (Omni 3.4 
to 3.6 GHZ, type N female 
connector) 
3.2 cm dia x 75.9 cm long. 637 gm
NA
RBU 90 Degree Sector 
Antenna (0 –5 Degree 
Adjustment)
98.85 cm x 11.43 cm x 
5.92 cm + Downtilt 
Mounting Kit
2.25 kg
N/A

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