Bit-synchronous operation is a type of digital communication in which the data circuit-terminating equipment (DCE), data terminal equipment (DTE), and transmitting circuits are all operated in bit synchronism with a clock signal.[1]
In bit-synchronous operation, clock timing is usually delivered at twice the modulation rate, and one bit is transmitted or received during each clock cycle.
Bit-synchronous operation is sometimes erroneously referred to as digital synchronization.
This article incorporates public domain material from the General Services Administration document "Bit synchronous operation" (Federal Standard 1037C in support of MIL-STD-188).