Optional Internal 10 Mhz Reference; Optional Lnb Support; Theory Of Operation; Sspa Block Diagrams - Comtech EF Data LPOD PS 1.5 Installation And Operation Manual

LPOD C-, X-, or Ku-Band Outdoor Amplifier / Block Up Converter (BUC)
Introduction
user can quickly gather intelligence not only about the unit itself, but also the
unit's operational environment.

1.3.6 Optional Internal 10 MHz Reference

With the optional high stability, oven-controlled crystal oscillator (OCXO)
installed, one more signal is removed from the TX IF cable. This ensures optimum
RF performance of the BUC by eliminating any reference degradation caused by
IF combiners, interconnections, or rotary joints.

1.3.7 Optional LNB Support

The LPOD was designed with the evolution of L-band systems in mind. L-band IF
topologies are no longer relegated to low power single carrier installations, and
are now found in larger multi-carrier installations. A challenge presented by
multi-carrier L-band systems is the presence of DC and reference components on
the Tx/Rx L-band interfaces. The LPOD design, by default, eliminates the DC
component from the Tx IF and can eliminate the reference requirement with the
optional internal OCXO. The LNB bias/reference option completes the solution by
eliminating DC and reference signal requirements from the Rx L-band interface.

1.4 Theory of Operation

1.4.1 SSPA Block Diagrams

See Figure 1-2 and Figure 1-3 for the LPOD block diagrams.
The major components of an LPOD unit are:
• The SSPA Module
• The Cooling system
• The Power Factor Corrected Power Supply
• Monitor & Control (M&C)
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MN-LPOD
Revision 14