RC4500 Antenna Controller Chapter 4 Software Configuration / Installation
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4.1.2 Define Antenna Size
The CONFIG-SYSTEM DEFINITION screen contains configuration items for the ACU system, including
defining the antenna size.
MODE:2 ANT SIZE: 500 CONFIG-SYSTEM
ANT LOOK:1 DRIVE:3
ANTENNA SIZE <1-9999 CM>
ANT SIZE: ANTENNA SIZE <1-9999 CM>
This item specifies the size of the reflector in centimeters. For example, a 5.9 ft. diameter reflector (1.8m)
would require a value of 180 (cm.) be specified.
The antenna_size_cm is used by inclined orbit tracking algorithms to characterize the antenna’s
beamwidth thus affecting timing of various tracking movements. The value is also used by autopeak
algorithms to determine the size of autopeak step movements.
4.1.3 Define Polarization Equipment
The CONFIG-FEED DEFINITION screen contains configuration items related specifically to the antenna’s
feed.
CONFIG-FEED
TYPE:1 LO:10750
BAND:1 REF:0
<0>CIRCULAR <1>SINGLE <2>DUAL
TYPE: <0>CIRCULAR <1>SINGLE <2>DUAL
The polarization_type configuration item specifies the configuration of the feed drive. This item will be
used by the controller to determine the appropriate automatic movement of the polarization axis.
Circular type specifies that no movement will be needed to align the polarization axis. No Angle
information will be displayed in MANUAL mode.
Single type specifies that the installation has a feed in just one orientation and therefore separate
movements must be made to achieve horizontal and vertical polarization positions.
Dual type specifies that separate feeds exist 90 degrees apart. For this configuration just one movement
to achieve both horizontal and vertical positions is required. If this is not the case the system should be
described as a single feed type so that separate movements will be made.
BAND: <0-C 1-Ku 2-L 3-X 4-Ka 5-S>
Defines the frequency band of the associated feed. This information may be used to determine the
apparent beamwidth of the system.
LO: FEED LNB LO FREQ <0 – 30000 MHz>
This value defines the frequency of the associated LNB's local oscillator. This information may be used
for tuning of integrated receivers.
REF: POLARITY AT ZERO DEG <0>HORZ <1>VERT
The orientation achieved by placing the polarization axis in the reference position.
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