What is Noise in Communication? A broad definition of noise in communication is something that keeps a receiver from completely comprehending a message. Distractions can inhibit a person from offering his undivided attention and may keep him from fully grasping what you are trying to say.
Difference Between FDM and FDMA. Frequency Division Multiplexing, or FDM, is a multiplexing technique for the physical layer that allows multiple low bandwidth signals to share the same high bandwidth frequency range. It is achieved by allocating a smaller frequency range to each signal that is using the same channel.
Choosing What You Need: Distributed Control System (DCS) vs Programmable Logic Controller (PLC) One of the questions Iâm frequently asked is âWhat is the difference between a DCS and a PLC?â The answer isnât simple as a PLC/HMI combo can do a lot of the same things a DCS does. The best approach is to list what your process needs, and see if you need enough features to justify a DCS.