Comtech EF Data CMR-5970 Manual - Manual (Page 40)

Digicast Media Router S2 Receiver CMR-5970 (MR-S2) & CMR-5990 (MR-S2-ASI) Revision A
Device Management via User Interfaces MN/MRS2ASIDC.IOM
Example 1:
LO = 10,750 MHz
Ku-Band Receive Frequency = 11,895 MHz
L-Band Frequency = 11,895 MHz – 10,750 MHz
L-Band Frequency = 1,145 MHz
Example 2:
LO = 10,600 MHz
Ku-Band Receive Frequency = 12,010 MHz
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
Modulation
The MR-S2 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 6 to 32 Msps
•
DVB-S2 – 8PSK 6 to 32 Msps
Polarity
The configured polarity provides the voltage supplied to the LNB or switch. The
valid selections for the MR-S2 are 13 VDC for vertical polarization and 18 VDC
for horizontal polarization. The MR-S2 is capable of providing up to 500mA of
current in either mode of operation. It is recommended, that if the LNB voltage
is not required, then a DC block should be installed.
Spectral Inversion
There are four supported modes of spectral inversion:
• On
– forces the tuner to stay with spectral inversion. The tuner will not
check for spectral inversion automatically
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