Motorola DIMETRA MTS 2, Инструкция по установке, настройке и базовому обслуживанию

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MTS 2 and MTS 4 Installation, Con
fi
guration and Basic Service Manual MTS 2 Duplexer
MTS 2 Duplexer
The Duplexer is a Preselector with Integrated Receiver Multicoupler (RMC) and a Post Filter with
a digital power monitor (DPM) combined into one unit. These form the two bandpass
fi
lters that
make up the Duplexer; one is a receive
fi
lter and the other a transmit
fi
lter.
Figure 7-7 MTS 2 Duplexer
The duplex spacing between a transmit frequency and the corresponding receive frequency is
10 MHz, with the transmit frequency highest. This leaves a 5 MHz spacing between the lowest
possible transmit frequency and the highest possible receive frequency.
For 800 MHz, the duplex spacing between a transmit frequency and the corresponding receive
frequency is 45 MHz, and leaves a 19 MHz spacing between the lowest possible transmit
frequency and the highest possible receive frequency.
The MTS 2 Duplexer has 2 RX outputs and can handle a maximum power of 60 watts.
The receiver LNA and splitter provides multiple receive signal ports. An ampli
fi
ed output is
provided for connection to the other cabinet in an expansion con
fi
guration.
The digital power monitor (DPM) is a directional coupler that measures forward and reverse Power.
Power and VSWR information can be read through the CAN bus.
6802800U74-N September 2009
7-9