Black Box MDR210A-485 manual Data Validity Cont, Glossary

Figure 2a – Generation of Data Packets

Data Validity (Cont.)

Header

Data from Buffer

Data

CRC
No Data	To Idle Mode

Figure 2b – Transmit Mode Description

To verify data integrity, a 16-bit cyclic redundancy check (CRC) is computed for the transmitted data and attached to the end of each data packet before transmission. The receiver will then compute the CRC on all incoming data. Any received data that has an invalid CRC is discarded.

Glossary

Data Buffer – Collects incoming serial data prior to over-the-air data transmission. The data buffer can hold up to 132 bytes at a given time.

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