Comtech EF Data CMR-5975 Manual - Manual (Page 106)

Digicast Media Router S2 Receiver CMR-5975 (MR-S2) Revision 3
Setting Up a Digicast Digital Satellite Receiver MN-CMR5975-IOM
D–8
Polarization The voltage provided to power the LNB:
None
– no power is provided to the LNB
Horizontal
– 18 VDC is provided to the LNB and can be used to switch the
LNB’s polarization if supported by the LNB manufacturer
Vertical
– 13 VDC is provided to the LNB and can be used to switch the LNB’s
polarization if supported by the LNB manufacturer
Receiver Digicast satellite receiver.
Remote Site Where the transmission signal terminates.
RF Radio
Frequency
The carrier frequency used to go from the Earth to the satellite and back.
Satellite A repeater located 22,300 miles above the Earth in geostationary orbit.
Spectral
Inversion Determines whether the spectrum is inverted or normal. For this parameter, it is
recommended that On/Both or Off/Both be selected, since this will ensure the
Digicast satellite receiver will automatically determine the correct spectrum.
Symbol Rate The symbol rate for the downlink carrier in Msps (Mega symbols per second).
The Symbol Rate is equivalent to the effective occupied bandwidth on the
satellite transponder, but does not include the filter roll off. To determine the
total occupied bandwidth on the satellite, the symbol rate is multiplied by (1+α),
where α is the configured filter roll off of the carrier.
Uplink
Frequency The RF frequency transmitted to the satellite from the Earth Station.