Comtech EF Data CMR-5970 Manual - Manual (Page 39)

Digicast Media Router S2 Receiver CMR-5970 (MR-S2) & CMR-5990 (MR-S2-ASI) Revision A
Device Management via User Interfaces MN/MRS2ASIDC.IOM
4.2.10 Tuner Configuration
Figure 4-12. Tuner Configuration page
Primary and Backup Tuner Configuration
The MR-S2 can be configured to have a backup (secondary) configuration. The
secondary tuner configuration allows the user to configure a backup configuration
in the event the main carrier is taken down. The MR-S2 will only attempt to use
the secondary configuration in the event the primary carrier is not available.
LNB Frequency
The frequency of the Local Oscillator (LO) that resides in the Low Noise Block
(LNB) amplifier located at the antenna. For Ku-Band operation, the LO is typically
10,750 MHz for Ku-Band operation North America and other common frequencies
are 9,750 MHz and 10,600 MHz. For C-Band operation, 5,150 MHz is a common
LO frequency. Please consult your LNB manufacturer for the LO in the LNB.
Downlink Frequency
The actual receive frequency being down linked from the satellite to the Low
Noise Block (LNB) amplifier located at the antenna. For Ku-Band operation,
this frequency ranges from 10,700 MHz to 12,750 MHz. For C-Band operation,
this frequency ranges from 3,400 MHz to 4,200 MHz.
The combination of the LO and the downlink frequency produce the L-Band
frequency expected by the MR-S2. Some examples are as follows:
4-13