RC4500 Antenna Controller Chapter 4 Software Configuration / Installation
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To test the gain flatness of the satellite receiver, perform the following procedure. The procedure
assumes a single receiver, single frequency band system.
1. Position the antenna well off of any satellite. Tune the receiver to each transponder. Make sure that
the signal strength reading is below the threshold assigned via CONFIG mode.
2. Align the antenna with a strong satellite. Tune the receiver to each active transponder on the satellite.
Make sure that the signal strength is well above the threshold and below 999.
If the system fails either of the tests above, then the user can attempt to correct the problem by correcting
the gain flatness problem. Most gain flatness problems can be traced to a problem with the coaxial cable
connecting the antenna to the receiver (sometimes called a 'suck-out') or to bullet amplifiers. Some bullet
amplifiers have been observed to have terrible gain flatness characteristics.
4.3.3 Operational Presets
This section has been included in the outline because it may simplify the user’s day-to-day operation. The
user cannot make use of preset satellites if they are never entered into the memory. This is a
straightforward procedure, but one which can be overlooked once the system is installed since the
RC4500 functions perfectly well without the presets. However, the presets streamline the operation by
allowing the user to tell the program very quickly what satellite is desired, without entering the data each
time.
If a list of user preferred satellites are available, they may be entered as described in
section 5.1.2.1.
4.3.4 Miscellaneous Adjustments
LCD Contrast. An LCD contrast potentiometer (R26) is located on the RC4500 computing and interface
board. This potentiometer will be set at the factory, but the user may want to adjust its setting for a
particular installation’s lighting conditions.
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