Comtech EF Data CMR-6000 Manual - Manual (Page 95)

Digicast Media Router S2 Receiver CMR-6000 Revision 1
Device Management via User Interfaces MN-CMR6000-IOM
4-65
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-6000 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-6000 are:
• 13 VDC for vertical polarization
• 18 VDC for horizontal polarization
• Off if LNB voltage is not required
The CMR-6000 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.