Comtech EF Data LPOD - Manual (Page 21)

LPOD C-, X-, or Ku-Band Outdoor Amplifier / Block Up Converter (BUC) MN-LPOD
Introduction Revision 10
1–3
1.3.4 “Smart BUC” Functionality
Comtech EF Data’s unique approach to L-Band/RF frequency conversions eliminates DC and 10
MHz from the input coax. This simplifies redundant and multi-carrier operation. Full 13.75 to
14.5 GHz Ku coverage and 5850 to 6725 MHz C band coverage is offered while supporting
industry standard FSK modem/BUC communications, as well as Comtech EF Data proprietary
commands.
Both LPOD models have a self-contained power supply, eliminating the requirement for the
modem to supply the BUC voltage on the center conductor of the RF cable, simplifying multi-
carrier operation and modem spares maintenance.
1.3.5 Data Logging Capability
To greatly enhance system maintainability, the LPOD includes a built-in data logging capability.
By recording critical operational parameters (such as temperature, output power, mute status,
etc.) at time stamped intervals, the 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.