ADCP-75-210 • Issue 1 • March 2007

Table 2. RAN Specifications

ITEM

SPECIFICATION

COMMENT

Input IP3

-21 dBm

Two tone tests at -56 dBm

 

 

 

Received signals

 

RDC capability (at cabinet input)

In band

-41 dBm

A/D clip level, single RF channel

Out of band +/- 8.5 MHz

-3 dB

Selectivity (function of SAW filter)

Out of band +11/-13 MHz

-43 dB

Selectivity

Out of band +13/-16 MHz

-83 dB

Selectivity

 

 

 

Automatic gain control

 

Activated if A/D clips, changes

Detector integration time

10 usec

gain of A/D and gain in digits.

Attack time

0 usec

Design ensures analog gain and

Decay time

0 usec

digital gain change will be timed

correctly. 15 dB noise figure at

Gain control range

30 dB

-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

 

 

 

System Bandwidth

 

 

Forward Path

15 MHz block increments

 

Reverse Path

15 MHz block increments

 

 

 

 

Impedance

50 ohm

 

 

 

 

Output Power

 

 

Cellular/SMR 10 Watt MCPA

6.5 Watts (+38 dBm) composite

At antenna port

PCS 20 Watt MCPA

12.5 Watts (+41 dBm) composite

At antenna port

 

 

 

Gain resolution

1 dB

 

 

 

 

Gain measurement

 

Configured at startup using fac-

 

 

tory calibration of modules and

 

 

user data

 

 

 

Note: The Manufacturer’s rated output power of this equipment is for single carrier operation. For situations when multiple carrier signals are present, the rating would have to be reduced by 3.5 dB, especially where the output signal is re-radiated and cause interference to adjacent band users. The power reduction is to be by means of input power or gain reduction and not by an attenuator at the output of the device.

1.6RAN 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

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© 2007, ADC Telecommunications, Inc.