Note 1: The effective transmission rate is calculated as (a) the measured number of units of data, such as bits, characters, blocks, or frames, transmitted during a significant measurement time interval divided by (b) the measurement time interval.
Note 2: The effective transmission rate is usually expressed as a number of units of data per unit time, such as bits per second or characters per second[?]. Synonyms average rate of transmission, effective speed of transmission.
Source: from Federal Standard 1037C and from MIL-STD-188
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