To correct for drift between the sending and receiving oscillators, asynchronous communication systems _________.
A) require periodic calibration by authorized service personnel
B) coordinate transmissions with a recognized NIST time signal
C) use a third system oscillator to establish a reference frequency
D) use the start bit of each data packet to resynchronize the oscillators

Question

Quizplus · Accepted Answer

Asynchronous communication systems use the start bit of each data packet to resynchronize the oscillators, allowing the receiver to align its clock with the sender's data stream despite any drift that may have occurred since the last packet was received. This method ensures data integrity without the need for continuous calibration or external time references.

To Correct for Drift Between the Sending and Receiving Oscillators