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Power above the minimum required by an optical receiver is called ________

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Power above the minimum required by an optical receiver is called ________

(a) phase margin

(b) system margin

(c) excess gain

(d) gain margin

I got this question in a national level competition.

Query is from PWM topic in portion Phase Locked Loop & Pulse Modulation of Analog Communications

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Best answer
Right choice is (b) system margin

Easiest explanation: System margin is the term used when the applied power is above the minimum required power by an optical receiver.

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