Comtech EF Data LCS-4 - Manual (Page 15)

Chapter 1. INTRODUCTION
1.1 I
NTRODUCTION
The LCS-4 L-Band Combiner Switch (Figure 1-1) is available in the following configurations:
• Single Configuration (C-Band, Ku-Band, or L-Band)
• Redundant Configuration (C-Band, Ku-Band, or L-Band)
IMPORTANT
Procedures provided in this manual are based on utilizing Comtech EF Data
equipment. If other user equipment is utilized, the customer shall obtain the
documentation required to operate with the LCS-4 L-Band Combiner Switch.
The LCS-4 L-Band Combiner Switch has a 4-way transmit (TX) and Receive (RX) path
combiner/splitter.
• Combines four TX L-Band signals from L-Band modulators for delivery to an Outdoor
Unit (ODU) or Block Up Converter (BUC).
• The unit receives an L-Band signal from an LNB and splits it into four outputs for
delivery to four L-Band demodulators.
• The unit provides current monitoring and switch drive capability for a 1:1 BUC/LNB
system
• The unit provides a 10 MHz reference for two ODU/BUCs and two LNBs. This
eliminates the need for a high stability reference in the L-Band modem.
• The 10 MHz reference can be provided to four modems.
• FSK signals from one of the four modulators are passed through to the ODU/BUC.
• The unit supports hot swap redundant power supplies for itself and the ODU/BUC.
• Redundant, but not swappable, LNB power is developed internally.
• Redundant, but not swappable, power is internally generated for the ODU/BUC and LNB
switch drivers.
1–1