Commutation (telemetry)

A sequence of minor frames (rows) including a subcommutated measurand (word WD2, in blue, sampled at half the frame rate and transmitted in alternating minor frames) and a supercommutated measurand (word WD4, in orange, sampled at twice the frame rate and thus included twice in each minor frame)

In telemetry, commutation is a process whereby multiple data streams ("measurands"), possibly with differing data rates, are combined into a single frame-based stream for transmission, before being separated again (decommutated) upon reception; it is a form of time-division multiplexing. Frame synchronization must be achieved before a data stream can be decommutated.^[1]

^ "Decommutation". L-3 Communications. Archived from the original on 2017-03-19. Retrieved 29 August 2016.

[L3-1] "Decommutation". L-3 Communications. Archived from the original on 2017-03-19. Retrieved 29 August 2016.

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