4.2 Communication Time

A topic that is often not considered is the time point of communication. Within an application, the best situation is to not have a disturbance present. This disturbance could be another communication interface within the application. Therefore, it can be sufficient to time multiplex communications, if possible. Every unwanted communication must be avoided while another interface is used. A simple example is the use of an RF-based service in combination with a simple high-speed SPI. An adverse SPI speed can lead to harmonics that fall into the RF band and worsen the performance or even lead to spectral pollution.