User's Manual

ADCP-75-210 • Issue 1 • November 2006
Page 8
© 2006, ADC Telecommunications, Inc.
1.6 RAN Cabinet
The RAN cabinet is a NEMA-3R enclosure designed to protect its electronic components from
weather and human tampering. The cabinet is weather-tight but contact with salt-air mist should
be avoided as it may decrease the mean time between failure of some components. The cabinet
has ventilation openings to allow entry of cool air and escape of hot air. The cabinet provides
termination points for the coaxial antenna cable, fiber optic cable, ground cable, and AC cable.
The cabinet has inbuilt AC power surge protection and limited storage for fiber optic cables.
1.6.1 Mounting
The RAN cabinet may be mounted on a wood pole or on a concrete pad. Mounting bracket kits
(available from ADC) are required for each type of installation.
Input IP3 -21 dBm Two tone tests at -56 dBm
Received signals
In band
Out of band +/- 8.5 MHz
Out of band +11/-13 MHz
Out of band +13/-16 MHz
-41 dBm
-3 dB
-43 dB
-83 dB
RDC capability (at cabinet input)
A/D clip level, single RF channel
Selectivity
(function of SAW filter)
Selectivity
Selectivity
Automatic gain control
Detector integration time
Attack time
Decay time
Gain control range
10 usec
0 usec
0 usec
30 dB
Activated if A/D clips, changes
gain of A/D and gain in digits.
Design ensures analog gain and
digital gain change will be timed
correctly. 15 dB noise figure at
-14 dB gain
Gain in series with BTS -10 to +10 dB Lower limit for simulcast with a
host tower site, the max reduces
effect of cascaded noise figure
Gain parallel to BTS 0 to +30 dB Allows injection after BTS
amplifiers
Gain stability +/- 2dB Over temperature, frequency, and
aging valid for input signals
below AGC threshold
Gain resolution 1 dB
Gain measurement Configured at startup using fac-
tory calibration of modules and
user data
Table 2. RAN Specifications
ITEM SPECIFICATION COMMENT