suppose that a synchronous serial data transmision is clocked by two clocks(one
ID: 3630457 • Letter: S
Question
suppose that a synchronous serial data transmision is clocked by two clocks(one at the sender and one at the receiver) that each have a drift of 1 minute in one year. How long a sequence of bits can be sent before possible clock drift could cause a problem? Assume that a bit waveform willbe good if it is sampled within 40% of its center and that sender and receiver are resynchronized at the beginnning of each frame. Note that the transmission rate is not a factor, as both the bit period and the absolute timing error decrease proportionaly at higher transmission rate.Explanation / Answer
Dear User, A synchronous serial data transmision is clocked by two clocks(one at the sender and one at the receiver) that each have a drift of 1 minute in one year so that the percentage of drift for the clocks is 1 min/year(365 days * 24 hours * 60min) = 1.9 * 10^-6. Both clocks have a drift, so that both clocks drift by the maximum amount in opposite directions. and each clock drifts by 1 part in percentage of a drift(i.e., 525960). So that total system drift by 1 part (i.e., 262980). let us consider the transimition rate is R. The maximum drift allowed is D = 40% t = 0.4/R, And maximum drift occur in time T = Nt =N/R. The maximum percentage drift is D/T = 0.4/N = 1/262980 N = 105192 bits. A synchronous serial data transmision is clocked by two clocks(one at the sender and one at the receiver) that each have a drift of 1 minute in one year so that the percentage of drift for the clocks is 1 min/year(365 days * 24 hours * 60min) = 1.9 * 10^-6. Both clocks have a drift, so that both clocks drift by the maximum amount in opposite directions. and each clock drifts by 1 part in percentage of a drift(i.e., 525960). So that total system drift by 1 part (i.e., 262980). let us consider the transimition rate is R. The maximum drift allowed is D = 40% t = 0.4/R, And maximum drift occur in time T = Nt =N/R. The maximum percentage drift is D/T = 0.4/N = 1/262980 N = 105192 bits.Related Questions
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