Comtech EF Data MetaCarrier MCDD-100, Инструкция по установке и эксплуатации

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MCDD-100 MetaCarrier Detection Device Revision 3
Introduction MN-MCDD100
1–2
1.2 Functional Description
Figure 1-2. MCDD-100 Connection Example
The MCDD-100 supports both L-Band operation (950 MHz to 2150 MHz) and IF operation (50
MHz to 180 MHz). Note that the MCDD-100 does not provide DC power for a Low-Noise Block
Downconverter (LNB) for the L-Band input.
At the monitoring (receive) station, the MCDD-100 may be connected after the downconversion
equipment for detection and decoding of the MetaCarrier – an example of this setup is shown in
Figure 1-2. Once directed to the desired carrier frequency and symbol rate (area of
interference), the MCDD-100 automatically determines whether a MetaCarrier is present.
The carrier’s characteristics may be obtained through the use of a spectrum analyzer or an
interference monitoring system. Upon entry of the approximate center frequency and symbol
rate, the MCDD-100 then begins to search under the assigned spectrum for the presence of a
MetaCarrier. The MetaCarriers, when present, have a power spectral density (PSD) between
27.5 dB and 17.5 dB below the transmission carrier’s spectral density in accordance with the
following table:
Host carrier symbol rate (SR) range
(ksps ≡ kilo symbols/sec)
CID Signal PSD level relative to
host carrier PSD level, dB
128≤ SR < 2048ksps -27.5
2048ksps≤ SR < 4096ksps -24.5
4096ksps≤ SR < 8192ksps -21.5
8192ksps≤ SR < 16384ksps -18.5
SR ≥ 16384 ksps -17.5