Glossary definition of Bit Error Rate Test

Also known as: BERT

Bit Error Rate Test (BERT) is a device or test used to determine the Bit Error Rate for a particular transmission.

The test is used to discover how many received bits of data were in error, as a ratio of the total number of bits received. The result is usually a very small number, typically one in a billion (or 10 to the power minus 9).