Cyclic redundancy check

The cyclic redundancy check (CRC) is used to produce and send a small, fixed-size checksum of a larger block of data to the data logger. This checksum detects errors after transmission or storage. The CRC is computed and added before any transmission or storage. The CRC is also authenticated by the recipient, after the transmission, to confirm that no alterations occurred. CRCs are good at identifying errors caused by noise in transmission channels.