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Subelement D
Display & Control Systems
Section 35
Memory Systems
In a digitized RADAR, the 360 degree sweep is divided into how many digitized segments?
  • 16
  • 64
  • 255
  • Correct Answer
    4,096
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While troubleshooting a memory problem in a raster scan RADAR, you discover that the "REFRESH" cycle is not operating correctly. What type of memory circuit are you working on?
  • SRAM
  • Correct Answer
    DRAM
  • ROM
  • PROM
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The term DRAM stands for:
  • Digital refresh access memory.
  • Digital recording access memory.
  • Correct Answer
    Dynamic random access memory.
  • Digital response area motion.
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How does the dual memory function reduce sea clutter?
  • Correct Answer
    Successive sweeps are digitized and compared. Only signals appearing in both sweeps are displayed.
  • The dual memory system makes the desired targets larger.
  • It reduces receiver gain for closer signals.
  • It increases receiver gain for real targets.
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How many sequential memory cells with target returns are required to display the target?
  • 1
  • Correct Answer
    2
  • 4
  • 8
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What is the primary purpose of display system memory?
  • Correct Answer
    Eliminate fluctuating targets such as sea return.
  • Display stationary targets.
  • Display the last available targets prior to a power dropout.
  • Store target bearings.
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