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BER (Bit Error Rate) - an explanation

(1) Measure of transmission quality generally shown as negative exponent, (e.g., 10-7 or 1 in 107 bits in error or 1 in 10,000,000 bits in error). (2) Measure of transmission accuracy as ratio of bits received in error to bits sent (e.g., 10-9 or 1 error in 1,000,000,000 bits) is common in voice and data transmission systems.Short for bit error rate. In a digital transmission, BER is the percentage of bits with errors divided by the total number of bits that have been transmitted, received or processed over a given time period. The rate is typically expressed as 10 to the negative power. For example, four erroneous bits out of 100,000 bits transmitted would be expressed as 4 x 10-5, or the expression 3 x 10-6 would indicate that three bits were in error out of 1,000,000 transmitted. BER is the digital equivalent to signal-to-noise ratio in an analog system.