Key Topic 35: Memory Systems

Question 1

8-35D1: In a digitized RADAR, the 360 degree sweep is divided into how many digitized segments?

A. 16
B. 64
C. 255
D. 4,096

Answer 1

D. 4,096

Question 2

8-35D2: 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?

A. SRAM
B. DRAM
C. ROM
D. PROM

Answer 2

B. DRAM

Question 3

8-35D3: The term DRAM stands for:

A. Digital refresh access memory.
B. Digital recording access memory.
C. Dynamic random access memory.
D. Digital response area motion.

Answer 3

C. Dynamic random access memory.

Question 4

8-35D4: How does the dual memory function reduce sea clutter?

A. Successive sweeps are digitized and compared. Only signals appearing in both sweeps are displayed.
B. The dual memory system makes the desired targets larger.
C. It reduces receiver gain for closer signals.
D. It increases receiver gain for real targets.

Answer 4

A. Successive sweeps are digitized and compared. Only signals appearing in both sweeps are displayed.

Question 5

8-35D5: How many sequential memory cells with target returns are required to display the target?

A. 1
B. 2
C. 4
D. 8

Answer 5

B. 2

Question 6

8-35D6: What is the primary purpose of display system memory?

A. Eliminate fluctuating targets such as sea return.
B. Display stationary targets.
C. Display the last available targets prior to a power dropout.
D. Store target bearings.

Answer 6

A. Eliminate fluctuating targets such as sea return.