3 Major Protocols used in ROV

3 Major Protocols used in ROV 

Now a days when most of rov's are fully fiber optic from surface to vehicle but we still need to use some protocols like RS-232,422,485 as computers still work on electrical signals not on Fiber optics.

We will discuss 3 major protocols used widely in ROV's.

RS-232- RS 232 is used to transfer data for short distance up to 50ft/17mts (in books) and up to 80 feet in practical,As this is a full duplex protocol you can send and receive data at same time.

RS-422 - RS 422 is use to transfer data over long distance up to 4000ft/1300mts,This is also a full duplex protocol.

RS-485- RS485 is same as RS-422 only difference is RS-485 is a half duplex protocol as you can either send or receive data,Practically speaking this type of protocol i have used a lot in SMD systems,It has benefit that you only have to use 1 twisted wire pair(twp) for signal as compare to 2 twp in RS-422 or RS-232.

As the distance specified are bookish numbers,You can double the distance if Data/Baud/Bps rate is half so if your telemetry is working at 19200bps you can use RS-232 for longer distance as compare to when your telemetry is at 38400bps. 

Now when you have learned some basics of these protocols it time to learn some tricks related to these protocols follow the next post to learn some fool proof troubleshooting tricks related to these protocols.