The signal we want to transmit is weak signal, and it is easy to receive external interference in the transmission process. In addition to our overall product needs to overcome interference factors in the design phase, improve anti-interference performance. When wiring, we should also pay attention to the following aspects:
1、 For the transmission speed requirements are higher, the need for immediate response, as far as possible
In order to reduce the use of multi-layer shielded wire, twisted pair is a good choice. Because of the high capacitance of shielded wire, the signal will be delayed; two For long distance, current transmission should be used as far as possible, and it is two-wire current transmission; three Avoid paralleling with large current such as main power line and cross, but electromagnetic isolation is required; four Digital transmission is adopted for ultra long distance.