Comtech EF Data CMR-5975 Manual - Manual (Page 47)

Digicast Media Router S2 Receiver CMR-5975 (MR-S2) Revision 3
Device Management via User Interfaces MN-CMR5975-IOM
4-19
4.2.12 Tuner Configuration
Figure 4-16. 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, and if a switch time of greater than 0 (zero) is set. If the unit is
unable to lock to the backup tuner settings, the unit will continue to switch between backup and
primary frequencies based on the switch time until lock is achieved.
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.