Comtech EF Data CMR-5995, Инструкция по установке и эксплуатации

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Digicast Media Router S2 Receiver CMR-5995 (MR-S2-ASI) Revision 1
Device Management via User Interfaces MN-CMR5995-IOM
4-59
L-Band Frequency = 12,010 MHz – 10,600 MHz
L-Band Frequency = 1,410 MHz
Example 3:
LO = 5,150 MHz
C-Band Receive Frequency = 3,920 MHz
L-Band Frequency = 5,150 MHz – 3,920 MHz
L-Band Frequency = 1,230 MHz
Example 4 (Direct L-Band entry):
This would be used if the user desired to not enter in the LO and RX frequencies.
For this example assume the same values as example 1:
LO = 10,750 MHz
Ku-Band Receive Frequency = 11,895 MHz
L-Band Frequency = 11,895 MHz – 10,750 MHz
The user would simply enter:
LO = 0 MHz (this allows the direct entry of the L-Band frequency)
L-Band Frequency = 1,170 MHz as the RX frequency
Modulation
The CMR-5995 supports the following modes of operation:
• DVB-S – QPSK
• DVB-S2 – QPSK
• DVB-S2 – 8PSK
Each mode of operation provides a range of FEC rates that are supported based on the mode and
modulation.
Symbol Rate
Depending on the configured mode of operation, the following symbol rates are supported:
•
DVB-S – QPSK 2 to 45 Msps
•
DVB-S2 – QPSK 2 to 32 Msps
•
DVB-S2 – 8PSK 2 to 32 Msps
Polarity
The configured polarity provides the voltage supplied to the LNB or switch. The valid selections
for the CMR-5995 are:
•
13 VDC for vertical polarization
•
18 VDC for horizontal polarization
•
Off if LNB voltage is not required
The CMR-5995 is capable of providing up to 600mA of current in either mode of operation. It is
recommended, that if the LNB voltage is not required, either polarity be set to ‘Off’ or that a DC
block be installed.