The bus-H and bus-L circuits of a dual wire (DW) bus used on a Ford are being viewed on a dual-channel oscilloscope. Technician A says the waveforms should be identical. Technician B says the waveforms should mirror each other. 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 B is correct because in a dual wire bus system, the bus-H and bus-L circuits should mirror each other, not be identical. This mirroring effect is essential for noise cancellation and ensuring signal integrity.

The Bus-H and Bus-L Circuits of a Dual Wire (DW)