Comtech EF Data DST - Manual (Page 31)

Digital Satellite Terminal System Revision 1
Block Up Converter MN/DST.IOM
3–1
Chapter 3. BLOCK UP
CONVERTER
This chapter provides the description, operation, specification, and installation of a Block
Up Converter (BUC)
3.1 Description of the Block Up Converter
The Block Up Converter (BUC) translates the L-Band carrier output from the IDU (in the
950 to 1750 MHz range) to C- or Ku-Band frequencies typically between:
• C-Band: 5.845 and 6.425 GHz and amplifies the carrier to the desired TX power
level.
• Ku-Band: 14.0 and 14.5 GHz and amplifies the carrier to the desired TX power
level.
The local oscillator of the BUC locks to the 10 MHz reference signal from the IDU in
order to provide an accurate frequency translation. In the event the BUC cannot lock to
the 10 MHz reference, the output carrier is muted to prevent interference with adjacent
carriers.