Patent ID: 6941400

Claim:
Data acquisition module for modular data acquisition system, comprising: connecting means on a first side for removably inserting the module in a slot of said modular acquisition system, at least one acquisition channel, each channel comprising at least one analog input and at least one analog-to-digital converter for converting an analog input signal of said analog input into a digital signal, at least one clock generating circuit capable of supplying an internal clock signal, wherein at least one connector, different from said connecting means, makes it possible to plug in a removable connecting element on a second external side of said module different from the first side in order to connect said module to a synchronization bus connecting several modules in said system, said connection being effected independently from the insertion of said module into said slot, and wherein a clock selecting circuit allows the selection of either a slave-clock state, in which said converters are synchronized by said synchronization bus, or of a master-clock state in which these converters are synchronized by said internal clock signal that is also used as external synchronization signal on said synchronization bus.