The 10-90% rise times for components used in D-IM analog optical link – McqOptions

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1.	The 10-90% rise times for components used in D-IM analog optical link is given. (LED=10ns, Intermodal=9ns/km, Chromatic=2ns/km, APD = 3ns). Link is of 5km. It has an optical bandwidth of 6MHz. Determine maximum permitted system rise time.
A.	58.3ns
B.	54ns
C.	75ns
D.	43.54ns
Answer» B. 54ns

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