FCC Commercial Element 8 pool, section 35

Subelement D

Display & Control Systems

Section 35

Memory Systems

835D1

In a digitized RADAR, the 360 degree sweep is divided into how many digitized segments?

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

835D1

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835D2

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
Correct Answer
B.
DRAM
C.
ROM
D.
PROM

835D2

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835D3

The term DRAM stands for:

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

835D3

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835D4

How does the dual memory function reduce sea clutter?

Correct Answer
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.

835D4

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835D5

How many sequential memory cells with target returns are required to display the target?

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

835D5

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835D6

What is the primary purpose of display system memory?

Correct Answer
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.

835D6

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