Have received a problem at use ADM2484E - the starting bit turns out with "step". The circuit drawing and signal photo in the appendix. In the photo:
- blue signal (3) - transmission enable - pin 5 DE ADM2484E
- green (2) - TxD signal on 6 pin of ADM2484E
- yellow (1) - RS485 line signal (DATA+ pin 14 ADM2485E)
Thanks!
Hi Ivan,
More recent investigation of similar issues shows that this can occur only at initial communication when not only is the bus unterminated, the cable is short, and the other node powered by 5V…