The start of frame (SOF)bit is being discussed. Technician A says with the J1850 protocol, the SOF bit is pulled from low to high. Technician B says with the CAN 2.0 A protocol, the SOF bit is pulled from high to low. Who is correct?
A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because in the J1850 protocol, the SOF bit transitions from low to high. Technician B is also correct because in the CAN 2.0 A protocol, the SOF bit transitions from high to low.

The Start of Frame (SOF)bit Is Being Discussed