User's Manual

COMMUNICATION
COMPONENTS INC
89 Leuning Street Phone: [phone]
2
nd
Floor Fax: [phone]
South Hackensack, NJ 07606 www.cciproducts.com
Extending Wireless Coverage
GSM Dual Amplifier Booster/ Combiner
CCI Model Number DAB-1819 & DAC-1819
With
Nortel S8000 GSM Base Transceiver Station
USER’S GUIDE
Product Description:
DAB-1819 & DAC-1819 Dual Amplifier Booster/ Combiner:
The CCI GSM Dual Amplifier-Booster Module (DAB) consists of two linear power
amplifiers with intermodulation level control circuitry. The Dual Amplifier-Combiner
Module (DAC) is identical to the DAB Module with the exception of a passive hybrid
combiner at the output which combines both signals to provide two 30-35 Watt GSM
signals on a common output.
Nortel S8000 GSM Base Transceiver Station:
The Base Transceiver Station (BTS) is a GSM Base Station which serves one cell
and is controlled by the Base Station Controller (BSC). The S8000 is available in an
outdoor and indoor versions of the BTS respectively. The BTS contains the radio
transceivers and all the digital signal processing equipment. The BTS contains eight
DRX/Power Amplifiers for a total of eight transceivers per BTS. The trancievers
operate in the frequency band of 1930 to 1990 MHz. There are 299 channels
available with a channel spacing of 200 KHz. The transmitter is a constant envelope
using 0.3 GMSK modulation, which is MSK filtered with a Gaussian filter, having a
BT product of 0.3. The transmitter is capable of operating in a Time Division Multiple
Access (TDMA) system. For each channel there are 8 time slots available, each
containing digital speech or data.
Operation Description:
The DAC-1819 and DAB-1819 Dual Amplifier Booster/ Combiner in conjunction with
the S8000 BTS are designed to supply a nominal output power level of 47.5 dBm
when used in the uncombined mode and 44.5 dBm when used in the combined
mode at the antenna connector. A system block diagram is shown on diagram #1
and #2..