Radar Field Analyser - RFA641 Edition Date: 28-Feb-18
7.3. Software
The Interference Generator software is used to set FRUIT Type, FRUIT Content, and Power and Rate to
select the characteristics of the out of beam FRUIT to be generated by the RFA641. The Interference
Generator window has three tabs (Fruit Type, Fruit Content and Power & Rate) which can be selected.
At start up the controls on the front panels are in their default setting. The default front panel is the FRUIT
Type panel. All controls can be set in randomly order, no hierarchical or chronological order has to be
respected.
Notice that the top row buttons are identical for the three panels. These buttons perform a number of
functions to operate the Interference Tool. When the correct settings are made you can download the
interference scenario to the RFA641 using the Download button. Notice that the Download button is
dimmed during the first three revolutions after the start up of the Interference Tool. Therefore no interference
scenario can be downloaded to the RFA641 during that time. The scenario can then be started using the
Play button and stopped using the Stop button.
The Save button allows the user to save the scenario to disk such that the scenario can be re-loaded in
a later stage using the Load button.
The lock in the right bottom corner must be switched on in case the Interference Generator has to lock onto
the ARP signal coming from the radar under test (which is surely the case when a sector is used).
Once an interference scenario is running on the RFA641, the Interference Tool can be stopped using the
Done button (without hitting the Stop button first), the USB connection can be disconnected and the
workstation can be switched off. The RFA641 keeps playing the scenario as long as it is powered.
7.3.1. FRUIT Type
When selecting a FRUIT composition in the Fruit Type tab, the software will recalculate the Fruit Rate
Limit which is displayed in the left corner of the FRUIT Type window.
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