MRC DRS2000HS, Руководство пользователя и техническое руководство

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Introduction 1-5 DRS2000HS/DRS6000HS User and Technical Manual
1.8.2 Antennas
MRC offers several types of antennas. See “Antenna Options”
on page 1-6 for more information.
1.8.3 Low Noise Block Downconverters
The receiver is compatible with several MRC and Link Research
downconverters (BDCs) that transform the incoming RF signal
into UHF for input to the receiver. See
“Block Downconverter
Options” on page 1-6 for more information.
1.9 Firmware Components
The receiver is controlled by software installed on programmable
read-only memory (PROM). You can access this firmware via
the front control screen, and use it to monitor the incoming signal
and control settings such as channel, frequency, and RF band.
The firmware also provides a web server that you can access
from a PC or laptop computer as long as both the receiver and
the computer are connected to the same Local Area Network
(LAN). See
“Routine Operation” on page 2-1 for more
information.
1.10 Frequency Bands
The receiver can operate in one of several factory-set frequency
bands: 2, 3, 4, 5, 6, or 7 GHz. The operating frequencies are
dependent upon the frequency of the block downconverters
used in the receiver system.
MRC offers a range of block downconverters and antennas
designed for each frequency range. The converters transform
the incoming RF signal to a 110 to 860 MHz VHF/UHF signal
while the receiver is capable of accepting a signal in the range of
174 to 860 MHz.
1.11 Standard Definition MPEG
Decoding
The receiver incorporates a Standard Definition (SD) MPEG
decoder. The SD decoder includes the following features:
• 4:2:0 chroma support
• NTSC or PAL color television standard compliance with
two analog audio channels
• Wayside Data Channel
• DVB-ASI Output.
1.12 COFDM Demodulation
The receiver incorporates COFDM demodulators that offer the
following features:
• DVB-T Compliant
• QPSK, 16QAM, or 64QAM modulation
• 6 MHz, 7 MHz, 8 MHz, or Auto bandwidth.
1.13 Applications
The receiver has several applications:
• Public safety
• Government operations
• Homeland security operations.