Communication Components DAB-DAC-1819-1 PCS Band GSM Amplifer User Manual Manual
Communication Components Inc PCS Band GSM Amplifer Manual
Manual
GSM Dual Amplifier Booster/ Combiner
CCI Model Number DAB-1819 & DAC-1819
With
Ericsson RBS-2106/2206 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, each capable of generating a
65-70 Watt GSM signal. 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.
RBS-2106 & RBS-2206 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 RBS-2106 and RBS
2206 designate the outdoor and indoor versions of the BTS respectively. The BTS
contains the radio transceivers and all the digital signal processing equipment. The
BTS contains six double Transceiver Radio Unit’s (dTRU’s) for a total of twelve
transceivers per BTS. The dTRU consists of two synthesized transmitters (TRX)
operating 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 RBS 2106/2206 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.
COMMUNICATION
COMPONENTS INC
Extending Wireless Coverage
89 Leuning Street Phone: 201-342-3338
2nd Floor Fax: 201-342-3339
South Hackensack, NJ 07606 www.cciproducts.com
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COMMUNICATION
COMPONENTS INC
Extending Wireless
Coverage
DUPLXR
TX1+2/RXA
LNA
TX3+4/RXB
TX1 HC1 TX1+ HC2 TX2 RXA RXB
TX 2
dTRU
1
TX1 HC1 TX1+ HC2 TX2 RXA RXB
TX2
dTRU
2
TX1 HC1 TX1+ HC2 TX2 RX A RXB
TX2
dTRU
3
DUPLXR
DUPLXR
LNA
DUPLXR
DUPLXR
TX9+10/RXB
LNA
TX11+12/RXA
DUPLXR
DUPLXR
LNA
DUPLXR
CXU
ddTMA
ddTMA
ddTMA
ddTMA
CXU
RBS 2106 BTS
DAB-1819
CONFIGURATION
CCI Confidential
TX
CDU-G
LNA
LNA
RXA RXB
DUPLEXER DUPLEXER
TXLP
TX
TXLP
48.5dB m
TX
CDU-G
LNA
LNA
RXA RXB
DUPLEXER DUPLEXER
TXLP
TX
TXLP
47.5dB m 47.5dB m
41dBm 41dBm
48.5dBm
TX
CDU-G
LNA
LNA
RXB RXA
DUPLEXER DUPLEXER
TXLP
TX
TXLP
47.5dB m 47.5dB m
41dBm 41dBm
DUPLXR
TX5+6/RXA
LNA
TX7+8/RXB
DUPLXR
DUPLXR
LNA
DUPLXR
ddTMA
ddTMA
CXU
48.5dB m
41dBm 41dBm
47.5dBm 47.5dBm
48.5dB m48.5dBm48.5dBm
DIAGRAM 1
DAB-
1819
DAB-
1819
DAB-
1819
COMMUNICATION
COMPONENTS INC
Extending Wireless
Coverage
DUPLXR
TX1+2/RXA
LNA
TX3+4/RXB
TX1 HC1 TX1+ HC2 TX2 RXA RXB
TX 2
dTRU
1
TX1 HC1 TX1+ HC2 TX2 RXA RXB
TX2
dTRU
3
TX1 HC1 TX1+ HC2 TX2 RXA RXB
TX2
dTRU
2
TX1 HC1 TX1+ HC2 TX2 RXA RXB
TX2
dTRU
4
TX1 HC1 TX1+ HC2 TX2 RX A RXB
TX2
dTRU
5
TX1 HC1 TX1+ HC2 TX2 RXA RXB
TX2
dTRU
6
DUPLXR
DUPLXR
LNA
DUPLXR
DUPLXR
TX9+10/RXB
LNA
TX11+12/RXA
DUPLXR
DUPLXR
LNA
DUPLXR
CXU
ddTMA
ddTMA
ddTMA
ddTMA
CXU
RBS 2106 BTS
DAC-1819
CONFIGURATION
CCI Confidential
TX
CDU-G
LNA
LNA
RXA RXB
DUPLEXER DUPLEXER
TXLP
TX
TXLP
DAC-
1819
45.5dBm 45.5dBm
TX
CDU-G
LNA
LNA
RXA RXB
DUPLEXER DUPLEXER
TXLP
TX
TXLP
44.5dB m 44.5dB m
41dBm 41dBm 41dBm 41dBm
45.5dBm 45.5dBm
TX
CDU-G
LNA
LNA
RXB RXA
DUPLEXER DUPLEXER
TXLP
TX
TXLP
44.5dB m 44.5dB m
41dBm 41dBm 41dBm 41dBm
DUPLXR
TX5+6/RXA
LNA
TX7+8/RXB
DUPLXR
DUPLXR
LNA
DUPLXR
ddTMA
ddTMA
CXU
45.5dB m 45.5dB m
41dBm 41dBm 41dBm 41dBm
44.5dBm 44.5dBm
DIAGRAM 2
DAC-
1819
DAC-
1819
DAC-
1819
DAC-
1819
DAC-
1819
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Although the gain of the Dual Amplifier Booster/ Combiner is fixed, the output can be
adjusted by setting the input power level. The input to the Dual Amplifier Booster/
Combiner is the Transceiver Radio Unit (TRU) whose output can be set at 16 power
levels in 2dB increments. As shown in diagram #1 and #2, setting the output level of
the TRU to 41 dBm will result in a power level at the output of the Dual Amplifier
Booster/ Combiner of 48.5 dBm in the uncombined mode and 45.5 dBm in the
combined mode.
The Dual Amplifier Booster/ Combiner is followed by a CDU-G module which
contains both a low-pass filter and duplex filter. The low-pass filter secures the
required reverse isolation and provides spurious and harmonic suppression of the
output signal. The duplex filter allows a single antenna to be used for both
transmitting and receiving. Due to the insertion loss of the CDU-G, the maximum
output power at the antenna connector of the radio base station is 47.5 dBm in the
uncombined mode and 44.5 dBm in the combined mode.
Operation and Installation Instructions:
The following instructions should be followed when installing the unit in service:
• Apply a 26-28VDC input voltage to the DC Input connector of the Dual
Amplifier-Booster/Combiner Module.
• Insure that the DC Source is capable of delivering up to 15 Amps at 28VDC.
• Apply a GSM signal of up to +41dBm to each RF input port of the Dual
Amplifier-Booster/Combiner Module.
• The Dual Amplifier-Booster/Combiner Module will provide approximately
7.5dB or less of RF Gain.
• Check the RF output to insure the proper output power is present.
{Approximately 65-70 Watts in the uncombined mode (DAB) or 30-35 Watts in
the combined mode (DAC)}.
• Adjust the input power level to insure the output power level is in compliance
with the values indicated in the table on page 2.
• Install the Alarm Connector to the Alarm Output connector of the Dual
Amplifier-Booster/Combiner Module.
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Setting the RF Output Power on the DAB & DAC Booster Amplifier
The RF output power is not adjustable on the DAB & DAC Booster Amplifier. The
user must adjust the RF input power to the Booster Amplifier such that the RF output
power level does not exceed the levels shown below in order for the RF output
spectral emissions to be compliant with the FCC spurious emissions limit of -13 dBm
outside of the assigned frequency block. These levels must not be exceeded.
Channel Center
Frequency (MHz)
Maximum RF
0utput (Watt)*
1930.2-1989.8 70
This equipment complies with Part 24 of the FCC rules. Any changes or
modifications not expressly approved by the manufacturer could void the user's
authority to operate the equipment.
In order to comply with FCC rules for RF exposure, it must be observed that the
antenna connected to this equipment be fixed on an outdoor structure and that it
must have a minimum separation distance of 2 meters between it and any
person."