Which of the following would not normally be...

🔍 Key Concepts

• Marine radar display chain – know what the video amplifier does with echoes before they go to the display (PPI scope, raster screen, etc.) • Difference between video signals (echo information drawn on screen) and control/positioning signals (used to rotate/position the sweep) • What range rings are and how they are superimposed on the display (are they ‘video’ or ‘control’?)

💭 Think About

• Ask yourself: Which of these options actually carries echo strength information that needs to be amplified before display? • Which item is associated with bearing/angle information rather than brightness/echo information? • For each choice, decide: Is this something that would be ‘drawn’ as brightness on the screen, or something that helps the radar know where to draw things?

✅ Before You Answer

• Identify which signals are truly video-type inputs to be amplified (echoes, rings, etc.). • Identify which signal is more related to antenna position / bearing (angle) than to brightness of the trace. • Before picking an answer, be sure you can explain to yourself what a resolver signal does in a radar system and whether it carries echo intensity or positional information.

Which of the following would not normally be an input to the video amplifier?

Fixed range rings.

Variable range rings.

Resolver signal .

Low level video.

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🔍 Key Concepts

💭 Think About

✅ Before You Answer