User's Manual

Chapter 2 System Description
2.3.9 High Band Exciter (HBE)
The HBE
functions as both an exciter and controller in the High Band sub-system.
The HBE receives the HB SAT 1 A and SAT 1 B ensembles from the S-Band antenna (via the
DBPF and LNA) and trans-codes the received ensembles into two terrestrial band COFDM
ensembles (waveforms). The terrestrial band ensembles (waveforms) are then up-
converted to the assigned HB terrestrial S-Band frequencies, creating a single RF output
used to drive the HB HPA.
The HBE also performs monitoring and control for a number of HB sub-system components
as well as alarm monitoring for several common DRU cabinet components.
Please refer to the HBE Operating Manual for a more detailed description of the HBE.
Figure 2-20 HBE
SX03-30000-01-M01
2-21